Techniques in Dental Implantology and Related Surgical Procedures Research Papers

BACKGROUND: Some studies indicated that implant failures are commonly concentrated in few patients. PURPOSE: To identify and analyze cluster behavior of dental implant failures among subjects of a retrospective study. MATERIALS AND METHODS: This retrospective study included patients receiving at least three implants only. Patients presenting at least three implant failures were classified as presenting a cluster behavior. Univariate and multivariate logistic regression models and generalized estimating equations analysis evaluated the effect of explanatory variables on the cluster behavior. RESULTS: There were 1406 patients with three or more implants (8337 implants, 592 failures). Sixty-seven (4.77%) patients presented cluster behavior, with 56.8% of all implant failures. The intake of antidepressants and bruxism were identified as potential negative factors exerting a statistically significant influence on a cluster behavior at the patient-level. The negative factors at the implant-level were turned implants, short implants, poor bone quality, age of the patient, the intake of medicaments to reduce the acid gastric production, smoking, and bruxism. CONCLUSIONS: A cluster pattern among patients with implant failure is highly probable. Factors of interest as predictors for implant failures could be a number of systemic and local factors, although a direct causal relationship cannot be ascertained.

Immediate loading of four implants (BTLock ®) in the maxilla and provisional restoration with guidesurgery (SimPlant, Materialise ®): case report. The severe atrophy of the jaws are a challenging therapeutic problem, since the increase in bone is necessary to allow the placement of a sufficient number of implants. Combining immediate functionalization with the concept of guided surgery they combine the advantages offered by the innovative surgical and prosthetic implant technique (All-on-Four ®) with those of computer-assisted planning in cases of severe bone atrophy. The method used in this case report, combines these two concepts in a surgical and prosthetic protocol safe and effective for the immediate function of 4 implants to support a fixed prosthesis in completely edentulous subjects. The integration of technology with immediate function with the concept of computer-guided surgery for implant placement and rehabilitation of completely edentulous jaws is now a predictable treatment modality with implant survival comparable to the traditional protocols.

This study evaluated the efficacy of replacing single missing teeth in the posterior quadrants of the maxilla and/or mandible with an implant-supported dental prosthesis. Material and methods: Three scientific literature databases-Medline (Pubmed), Ovid Medline and Cochrane Central Register of Controlled Trials (CENTRAL)-were used to perform a search of publications over a period from 1985 to 2014. One hundred and forty one (141) articles were reviewed; 36 articles met the inclusion criteria and were included in the final review. Results: The survival rates, success rates and mean bone loss for immediate implant placement were 96.9%, 100% and 0.85 mm, respectively. The survival rates, success rates and mean bone loss for delayed implant placement were 96.8%, 94.1% and 0.55 mm respectively. The survival rate, success rate and the mean bone loss in studies comparing immediate versus delayed implant placement showed 96.8% and 96.3%, 85.8% and 93.3%, and 0.57 ± 0.57 mm and 0.55 ± 0.37 mm, respectively. Conclusion: The prognosis for single molar implants provides a viable treatment option for replacing a single missing tooth in the posterior quadrants of the maxilla and mandible. There does not appear to be a significant difference in the survival rates of immediately placed implants compared with delayed implant placement. However, the success rates were slightly higher with delayed loading protocols than immediate loading protocols.

Dental school graduates have many options following graduation. Many are pursuing additional education and training by doing a residency program. As more graduates consider this career path, these programs have become more competitive. This study evaluates the competitiveness of match programs in dental residency programs by assessing data over a 9-year period for programs in the National Matching Service. The number of applicants participating in the match, number of positions offered, number of positions filled, and number of positions unfilled were analyzed for General Practice Residency (GPR), Advanced Education in General Dentistry (AEGD), Oral Maxillofacial Surgery (OMS), Pediatric Dentistry (PED), Orthodontics (ORTHO) and Dental Anesthesiology (ANES). The result has been an overall increase in number of applicants for these programs. Based on positions offered, ORTHO, PED, and OMS are the most competitive programs. PED programs were the most competitive due to the increase in applicants and relatively unchanged available positions.

- by Mara Fabiola Mfvb
- •
- Dentistry, Dental Hygiene And Epidemiology, Dental Surgery, Dental Research

Abstract: The growing interest in minimally invasive implant placement and delivery of a prefabricated provisional
prosthesis immediately, thus minimizing “time to teeth,” has led to the development of numerous 3-dimensional
(3D) planning software programs. Given the enhancements associated with fully digital workflows, such as
better 3D soft-tissue visualization and virtual tooth rendering, computer-guided implant surgery and immediate
function has become an effective and reliable procedure. This article describes how modern implant planning
software programs provide a comprehensive digital platform that enables efficient interplay between the surgical
and restorative aspects of implant treatment. These new technologies that streamline the overall digital workflow
allow transformation of the digital wax-up into a personalized, CAD/CAM-milled provisional restoration. Thus,
collaborative digital workflows provide a novel approach for time-efficient delivery of a customized, screw-retained
provisional restoration on the day of implant surgery, resulting in improved predictability for immediate function in
the partially edentate patient.

Background: The goal of this article to is present and evaluate the clinical effectiveness of a new surgical approach using a coronally advanced flap performed during second stage implant surgery for the reconstruction of peri implant... more

- by Britto Falcon
- •
- Periodontics, Implantology, Surgery, Plastic Surgery

Although the best method of prosthetic retention remains a much debated issue in the implant literature, screw-retained implant prostheses are still a viable treatment modality, especially when retrievability is considered of great importance. This article presents a case report involving the restoration of two maxillary implants using custom abutments and transverse screw–retained metal-free zirconia crowns.

- by Yugo Hatai and +1
- •
- Dentistry, Prosthodontics, Dental Implants, Techniques in Dental Implantology and Related Surgical Procedures

RESUMEN Los tratamientos de implantes dentales se han convertido en un tratamiento cotidiano dentro de la práctica diaria, por lo que la presencia de defectos del reborde alveolar que se da por la reabsorción ósea ha conllevado al desarrollo de muchos procedimientos de aumento óseo con la intención de mejorar la cantidad y calidad del hueso, para así lograr un tratamiento de implantes dentales predecible. El objetivo de esta revisión de la literatura es la de presentar los principales procedimientos referidos al manejo de los defectos horizontales del reborde alveolar, que siempre representan un desafío para los clínicos. ABSTRACT Dental implant treatments have become a daily treatment within daily practice, so that the presence of defects of the alveolar ridge that results from bone resorption has led to the development of many bone augmentation procedures with the intention of improving the quantity and quality of the bone to achieve a predictable dental implant treatment. The objective of this review of the literature is to present the main procedures related to the management of horizontal defects of the alveolar ridge, which are always a challenge for clinicians.

- by Britto Falcon
- •
- Periodontics, Implantology, Dental Research, Regeneration

Ingin tampil lebih percaya diri dengan pasang gigi palsu permanen di Jogja? Disini tempatnya untuk pasang gigi tiruan di Yogyakarta. Kami siap melayani implan gigi palsu sesuai kebutuhan Anda dengan ditangani oleh dokter gigi dan perawat gigi terbaik dan kompeten. Kami melayani pemasangan gigi palsu permanen, gigi palsu lepasan, gigi palsu akrilik, gigi palsu valplast, pemasangan crown (mahkota tiruan) dan gigi palsu lain yang aman dan nyaman untuk anak, ibu hamil, orang tua, dan orang dewasa. Siap melayani masyarakat Piyungan, Berbah, Prambanan, Kalasan, Patuk, Dlingo, Banguntapan, Bantul, Sleman, Wonosari, Wates, Jogja, dan sekitarnya. Kami percaya kepuasan dan kesehatan pelanggan adalah prioritas utama kami. Kami siap melayani segala jenis pemasangan gigi palsu permanen dan lepasan dengan berbagai model dan kebutuhan yang terbaru, ternyaman dan paling aman.

El tratamiento de colocación de implantes para la reposición de dientes ausentes es un procedimiento común y aceptable en periodontología, por su alto grado de biocompatibilidad y oseointegración, que lo hace una alternativa predecible, sin embargo la pérdida de implantes dentales a corto o largo plazo es una delas complicaciones posibles. La regeneración ósea guiada es una alternativa para restaurar el volumen de la cresta alveolar deficiente, que aumenta la dimensión horizontal y vertical de las crestas óseas, con el fin de permitir la oseointegración y estabilidad a largo plazo de futuros tratamientos de implantes. Se obtiene mediante el uso de membranas reabsorbibles y no reabsorbibles, con o sin el uso de materiales de injerto óseo.

El bajo costo de los implantes y de sus componentes protésicos puede ser significativo para lograr la aceptación de un plan de tratamiento. Cuando se presenta al paciente un plan alternativo con implantes de calidad y bajo costo puede representar ventajas económicas y emocionales en el momento que se ofrecen las mismas garantías de seguridad y evidencias de confiabilidad cuando presentan los mismos estándares de calidad de una marca líder.

This is the first comprehensive review of the classification, preventative measures, diagnosis, treatment methods, and determination of success criteria of buccal bone plate fenestrations (BPFs) secondary to posterior implant surgeries. The purpose of this review is to present and discuss the current literature from peer-reviewed journals, recent studies, and international implantology guidelines and to provide practitioners with guiding points to identify and understand whether BPFs are complications or accidents of implant surgeries. In addition, this review sets forth a detailed set of criteria for the evaluation and diagnosis of BPFs and for the subsequent classification of BPFs as either complications or accidents of posterior implant surgeries. From the literature analyzed, it is clear that BPFs are disqualified from the class of implant treatment failures because BPFs neither impair nor significantly delay treatment. A comprehensive outline of preventative measures and surgery aids to avoid fenestrating the buccal bone plate during implant placement, and a variety of repair methods are included in this review. Considerations of treatment outcomes and patient sensitivities are also included in this comprehensive review.

- by Liviu Steier
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- Implantology, Dental Research, Dental Implants, Dental Education
- by Dennis Tarnow
- •
- Dentistry, Design, Biomedical Engineering, Dental Implants

Dental transposition is a form of ectopic eruption with change in position of normal adjacent teeth. Its prevalence is very low in general population and could be frequently missed on oral examination. We present a rare case of dental... more

Recent studies have suggested that the insertion of dental implants in patients being diagnosed with bruxism negatively affected the implant failure rates. The aim of the present study was to investigate the association between the bruxism and the risk of dental implant failure. This retrospective study is based on 2670 patients who received 10096 implants at one specialist clinic. Implant- and patient-related data were collected. Descriptive statistics were used to describe the patients and implants. Multilevel mixed effects parametric survival analysis was used to test the association between bruxism and risk of implant failure adjusting for several potential confounders. Criteria from a recent international consensus (Lobbezoo et al., J Oral Rehabil, 40, 2013, 2) and from the International Classification of Sleep Disorders (International classification of sleep disorders, revised: diagnostic and coding manual, American Academy of Sleep Medicine, Chicago, 2014) were used to define and diagnose the condition. The number of implants with information available for all variables totalled 3549, placed in 994 patients, with 179 implants reported as failures. The implant failure rates were 13.0% (24/185) for bruxers and 4.6% (155/3364) for non-bruxers (P < 0.001). The statistical model showed that bruxism was a statistically significantly risk factor to implant failure (HR 3.396; 95% CI 1.314, 8.777; P = 0.012), as well as implant length, implant diameter, implant surface, bone quantity D in relation to quantity A, bone quality 4 in relation to quality 1 (Lekholm and Zarb classification), smoking and the intake of proton pump inhibitors. It is suggested that the bruxism may be associated with an increased risk of dental implant failure.

Purpose: To investigate the association between the intake of proton pump inhibitors (PPIs) and the risk of dental implant failure. Materials and Methods: The present retrospective cohort study is based on patients consecutively treated between 1980 and 2014 with implant-supported/retained prostheses at one specialist clinic. Modern endosseous dental implants with cylindrical or conical design were included, and only complete cases were considered; ie, only those implants with information available for all variables measured were included in the regression model analysis. Zygomatic implants and implants detected in radiographies but without basic information about them in the patients' files were excluded from the study. Implant-and patient-related data were collected. Multilevel mixed-effects parametric survival analysis was used to test the association between PPI exposure (predictor variable) and risk of implant failure (outcome variable), adjusting for several potential confounders. Results: A total of 3,559 implants were placed in 999 patients, with 178 implants reported as failures. The implant failure rates were 12.0% (30/250) for PPI users and 4.5% (148/3,309) for nonusers. A total of 45 out of 178 (25.3%) failed implants were lost up to abutment connection (6 in PPI users, 39 in nonusers), with an early-to-late failure ratio of 0.34:1. The intake of PPIs was shown to have a statistically significant negative effect for implant survival rate (HR 2.811; 95% CI: 1.139 to 6.937; P = .025). Bruxism, smoking, implant length, prophylactic antibiotic regimen, and implant location were also identified as factors with a statistically significant effect on the implant survival rate. Conclusion: This study suggests that the intake of PPIs may be associated with an increased risk of dental implant failure. Int J Oral MaxIllOfac IMplants 2017 (6 pages). doi: 10.11607/jomi.5662 Keywords: dental implant, failure, multilevel mixed effects parametric survival analysis, multivariate analysis, proton pump inhibitors, risk factors

Introduction: Dentistry is one of the most prestigious professions
in India. Among the total dental undergraduate students a very
high proportion is female. The present study was conducted to find
out the attitude of female dental students regarding their further
study and to find out different factors affecting the decision to do
post-graduation and subject of choice.
Methodology: The study was carried out in a dental college in
South India among the undergraduate female dental students from
first year to final year. Data were collected using a pre-designed,
pre-tested semi-structured questionnaire. Collected data was
compiled, tabulated and analyzed using SPSS version 16.0.
Results: 25% students did not want to do post-graduation and
wanted to work as general dentist. Wish to be general dentist was
significantly higher among students of higher age group and
students of final year. Oral and maxillofacial surgery was the most
favorite discipline to do post-graduation for students of all years
except final year. No student wanted to work as oral pathologist,
oral anatomist, public health dentist or period on to logist.
Majority of the students liked to study dentistry. However,
proportion of students who did not like to study dentistry was
significantly higher among third year students.
Conclusion: Attitude of students regarding future career varied
widely according to age of the students and year of study. Practice
of early age of marriage among female as compared to male may
be a reason of change of their attitude regarding future study.
Huge stress involved in studying dentistry can be another reason
for this.

The purpose of this study was to evaluate the effect of cortical bone perforation on angiogenesis and osteogenesis of the augmented ridge in guided bone regeneration. Eighteen patients who had osseous defects in the mandible were selected. In the test group (n = 9), alveolar cortical bone in the area of regeneration was perforated. No decortication was performed in the control group (n = 9). Subsequently, defects were augmented by guided bone regeneration using resorbable membrane and bovine bone. After a healing period of 7 months, trephine cores were harvested for histological and histomorphometric analysis of the grafted areas. Histomorphometry demonstrated that the amount of newly formed bone in the test group (27.8%) was greater than that in the control group (25.3%), but the difference was not statistically significant (P = 0.13). However, the mean number of microvessels in the test group was significantly higher than that in the control group (P = 0.01). This study found that cortical bone perforation favourably affects the amount of new bone formation in the grafted sites after 7 months of healing. Cortical bone perforation significantly increase number of new vessels (angiogenesis) of the regenerated bone. Further randomized clinical trials are required to confirm these results.

- by Seyed Amir Danesh-Sani
- •
- Bone Biology, Dental Implants, Bone Regeneration, Bone graft

Objectives: The aim of this interim analysis of a 5-year prospective multicenter study is to evaluate clinical and radiological performance of immediately provisionalized 3.0-mm-diameter tapered implants. Materials and methods Patients needing implant rehabilitation of maxillary lateral incisors or mandibular lateral and central incisors were treated with 3.0-mm-diameter implants placed in extraction or healed sites and immediately provisionalized. Clinical and radiographic examinations were performed at implant insertion, 6 months thereafter, and are ongoing. Marginal bone levels and changes, complications, the papilla, plaque, and bleeding indices, and the pink esthetic score (PES) were evaluated at each follow-up visit. Results Of 112 enrolled patients, 77 patients (91 implants) met the inclusion criteria. Seventy-one patients with 82 implants completed the 1-year follow-up. Three implants failed yielding a CSR of 96.7%. All failures occurred within the first 3 months after implant insertion. Marginal bone level changes from insertion to 6 months was − 0.57 ± 1.30 mm (n = 75) and from insertion to 12 months − 0.25 ± 1.38 mm (n = 72). Fifteen non-serious complications were recorded. Papilla index score and PES improved at the 1-year followup. Plaque formation and bleeding-on-probing showed no statistically significant differences between the 6-month and the 1-year visit. Conclusions This 1-year analysis demonstrated high survival, stable bone levels, and healthy soft tissue with 3.0-mm-diameter implants. Clinical implications Narrow diameter implants are a safe and predictable treatment option in patients with limited bone volume and/or limited interdental space and eligible for immediate loading protocols.

BACKGROUND: Implant fractures are rare but offer a challenging clinical situation. PURPOSE: To determine the prevalence of implant fracture and the possible risk factors predisposing an implant to a higher fracture risk. MATERIALS AND METHODS: This retrospective study is based on 2670 patients consecutively treated with implant-supported prostheses. Anatomical-, patient-, and implant-related factors were collected. Descriptive statistics and survival analyses were performed. Generalized estimating equations (GEE) evaluated the effect of explanatory variables on implant fracture. RESULTS: Forty-four implants (out of 10 099; 0.44%) fractured. The mean ± standard deviation time for fracture to occur was 95.1 ± 58.5 months (min-max, 3.8-294.7). Half of the occurrences of fracture happened between 2 and 8 years after implantation. Five factors had a statistically significant influence on the fracture of implants (increase/decrease in fracture probability): use of higher grades of titanium (decrease 72.9%), bruxism (increase 1819.5%), direct adjacency to cantilever (increase 247.6%), every 1 mm increase in implant length (increase 22.3%), every 1 mm increase in implant diameter (decrease 96.9%). CONCLUSIONS: It is suggested that 5 factors could influence the incidence of implant fractures: grade of titanium, implant diameter and length, cantilever, bruxism.

Abstract: The "screw shaped" expansion-condenser are hand instruments that were introduced for the first time at the end of the 70' in order to improve bone density before the positioning of a dental implant. Thanks to these hand instruments it is possibile to compact the bone apically and along the walls of the implant bed (Fig. 3) improving a lot the bone density and the primary stability of the implant even in situations where the starting bone quality is low (es. D3-D4 as in the classification y Lekholm and Zarb 1985) or in cases of severe bone atrophy. Allowing a manageable raising of the shnaiderian membrane through trans-alveolar way, this technique avoids in many cases the necessity to have recourse to the realisation of bone vestibular "gates" when it comes to the techniques of the big sinus lift. The knoledge of the bone visco-elastic and hystologic properties together with the maximum respect of the surgical protocol allows us to obtein % of success superior than traditional surgical protocol in D3-D4 bone class.

Background and Aims: The present study was conducted to assess failure rate of dental implant in medically compromised patients. Methods: This study comprised of 68 medically compromised patients of both genders who underwent dental implants 5 years ago (Group I). Equal number of healthy subjects was taken as control (Group II). Amount of bone loss around the implant over 1mm of bone loss in the first year and over 0.3 mm bone loss every subsequent year were considered as failures.
Results: The age group of 30‑40 comprised of 25 patients in group I and 35 in group II, 40‑50 years had 27 in group I and 23 in group II and
50‑60 years had 16 in group I and 10 in group II. Medically compromised patients were diabetes (25) with 30 dental implants followed by osteoporosis (16) with 17 dental implants, hypothyroidism (12) with 14 dental implants, organ transplant (10) with 12 dental implants and CVD (5) with 7 dental implants. Chi‑ square test was applied which revealed significant difference in patients (P < 0.05). In group I, there were 18 (22.5%) and in group II, there were 4 (5.56%) dental implant failures. The difference with chi‑ square test found to be significant P < 0.05). Conclusion: Among medically compromised conditions, higher failure rate was found in diabetes.

Aim: The present study was conducted to determine the prevalence rate of dental implants failure and risk factors affecting dental implant
outcome.
Materials and Methods: The present retrospective study was conducted on 826 patients who received 1420 dental implants in both genders. Length of implant, diameter of implant, location of implant, and bone quality were recorded. Risk factors such as habit of smoking, history of diabetes, hypertension, etc., were recorded.
Results: In 516 males, 832 dental implants and in 310 females, 588 dental implants were placed. Maximum dental implant failure was seen with length <10 mm (16%), with diameter <3.75 mm, and with type IV bone (20.6%). The difference found to be significant(P < 0.05). Maximum dental implant failures were seen with smoking (37%) followed by hypertension (20.8%), diabetes (20.3%), and CVDs (18.7%). Healthy patients had the lowest failure rate (4.37%).
Conclusion: Dental implant failure was high in type IV bone, dental implant with <3.75 mm diameter, dental implant with length <10.0 mm, and among smokers

Ingin tampil lebih percaya diri dengan pasang behel gigi atau kawat gigi di Jogja? Disini tempatnya untuk pasang behel gigi di Yogyakarta. Kami melayani pemasangan behel gigi permanen, gigi lepasan, behel gigi metal, behel gigi damon, behel gigi estetik, behel gigi transparan, behel gigi fashion dan behel gigi lain yang aman dan nyaman untuk anak, ibu hamil, orang tua, dan orang dewasa. Siap melayani masyarakat Piyungan, Berbah, Prambanan, Kalasan, Patuk, Dlingo, Banguntapan, Bantul, Sleman, Wonosari, Wates, Jogja, dan sekitarnya. Kami siap melayani pemasangan behel sesuai kebutuhan Anda dengan ditangani oleh dokter gigi dan perawat gigi terbaik dan kompeten. Kami percaya kepuasan dan kesehatan pelanggan adalah prioritas utama kami. Kami siap melayani segala jenis pemasangan behel gigi baik pasang behel gigi permanen maupun lepasan dengan berbagai model dan kebutuhan yang terbaru, ternyaman dan paling aman.

- by Pasang Behel Gigi Jogja
- •
- Health Promotion, Dental Research, Health Care, Health

Background: Dental implants are associated with failure such as early or late failure. Systemic conditions such as diabetes, hypertension, and bruxism affect the success rate. The present study was conducted to assess complications in dental implants in bruxism patients.
Materials and Methods: This 5‑year retrospective study was conducted on 450 patients (640 dental implants) who received implants during the period and followed up for 5 years from June 2010 to June 2015. Among these patients, 124 had bruxism habit. Dental radiographs or patients’ recalled records were evaluated for the presence of complications such as fracture of implant, fracture of ceramic, screw loosening, screw fracture, and decementation of unit. Results: In 240 males and 210 females, 380 implants and 260 implants were inserted, respectively. The difference was statistically nonsignificant (P = 0.1). A total of 145 screw‑type and 130 cemented‑type fixations had complications. The difference was statistically nonsignificant (P = 0.5). Complications were
seen in single crown (45), partial prostheses (125), and complete prostheses (105). The difference was statistically significant (P = 0.012). The common complication was fracture of ceramic (70) in cemented‑type fixation and fracture of ceramic (85) in screw‑type fixation. The difference was statistically significant (P = 0.01). Forty‑two single crowns showed decementation, 85 partial prostheses had fracture of ceramic/porcelain, and 50 complete prostheses showed fracture of ceramic/porcelain. The failure rate was 42.9%. Survival rate of dental implants in males with bruxism habit was 90% after 1 year, 87% after 2 years, 85% after 3 years, 75% after 4 years, and 72% after 5 years. Survival rate of dental implants in females with bruxism habit was 92% after 1 year, 90%, after 2 years, 85% after 3 years, 75% after 4 years, and 70% after 5 years. The difference among genders was statistically nonsignificant (P = 0.21).
Conclusion: Bruxism is a parafunctional habit which affects the survival rate of dental implants. There is requirement to follow certain specific
protocols in bruxism patients to prevent the developing complications.

- by Dr. Anuj S Parihar
- •
- Prosthodontics, Implantology, Dental Implants, Periodontology

To evaluate the influence of implant scanbody (ISB) material, position and operator on the accuracy of a confocal microscopy intraoral scanning (IOS) for complete-arch implant impression. Methods: An edentulous maxillary model with 6 internal hexagonal connection analogues was scanned with an extraoral optical scanner to achieve a reference file. Three ISBs made of different materials (polyetheretherketone (Pk), titanium (T) and Pk with a titanium base (Pkt)) were scanned with IOS by 3 operators. The resulting 45 test files were aligned to the reference file with a best fit algorithm. Linear (DX, DY and DZ-axis) and angular deviations (DANGLE) were assessed. Absolute values of the linear discrepancies were summed up to obtain a global measure of linear absolute error (DASS). Influence of ISB material, position and operator was statistically assessed using the mixed general linear model. Results: At multivariate analysis, whenDASS was considered as response variable, it was identified a significant influence of material (p < 0.0001) and position (p = 0.0009) while no significant operator effect was detected. When DANGLE was considered as response variable, material and position significantly influenced the expected DANGLE (p = 0.0232 and p < 0.0001) and no operator effect was identified. Conclusions: The investigated IOS for complete-arch digital impression was influenced by the ISB material with peek reporting the best results on both linear and angular measurements followed by titanium, peek-titanium resulting as the less accurate. Implant angulation affected significantly the linear deviations while implant position the angular deviations. Operator did not show any significant effect on the IOS accuracy.

- by Alessandro Pozzi
- •
- Implantology, Dental Research, Dental Health, Dental Public Health

Objective The aim of this report is to present an interdisciplinary treatment involving periodontics, orthodontics, dental implant placement, and prosthodontics with a fully digital dentistry approach. Clinical Considerations The patient presented with an edentulous ridge on the area of the lower left lateral incisor as well as gingival recession on the adjacent teeth. After performing a digital orthodontic setup and indirect bonding bracket placement, a dental implant placement was carried out before orthodontic treatment in combination with guided bone regeneration (GBR), connective tissue graft (CTG) and periodontal accelerated osteogenic orthodontics (PAOO). In a 6‐month period, orthodontic treatment was fully completed and the dental implant was restored at 8 months. Following one‐and‐a‐half years, significant gingival recession reduction was accomplished and soft tissue augmentation around the dental implant appeared stable with a good functional and esthetic result. Conclusio...

- by Gonzalo Blasi
- •
- Dentistry, Restorative Dentistry And Endodontics, Orthodontics, Periodontics

The interdisciplinary collaboration of periodontics and orthodontics has allowed teeth to be moved 2–3 times faster, reducing the time required for traditional orthodontic therapy considerably. Periodontally accelerated osteogenic orthodontics (PAOO), also known as Wilckodontics, is a combination of a selective decortication facilitated orthodontics and alveolar augmentation. With this technique, there is no dependence on the pre-existing alveolar volume. This case report describes the treatment of permanent mandibular molar protraction in a 14-year-old patient undergoing orthodontic therapy using PAOO with piezosurgery.

- by Dr. Anuj S Parihar
- •
- Periodontics, Implantology, Dental Implants, Periodontology
- by Farideh Geramipanah and +1
- •
- Pathology, Dentistry, Restorative Dentistry And Endodontics, Prosthodontics

Abstract
BACKGROUND:
Minimizing crestal bone loss following immediate implant placement is considered the most challenging aspect in implant therapy. Implant surface topography and chemical modifications have been shown to influence the success of Osseointegration. The Straumann Bone Level implant, featuring SLActive surface, has been introduced with the aim of enhancing bone apposition. Similarly, the OsseoSpeed implants from Astra Tech claim to have an enhanced osseointegration. Because of the specific features in the implant design, both companies claim that crestal resorption is minimal with these implants.
OBJECTIVE:
To evaluate the osseointegration and crestal bone level following immediate placement of Straumann Bone Level implant and OsseoSpeed implants in fresh extraction sockets in Beagle dogs.
METHOD:
The distal roots of the second, third and fourth premolars were extracted in both sides of the mandible. The distal roots were removed using a dental elevator. A total of 60 fixtures were installed in 10 Beagle dogs. Two types of implants were used: Straumann Bone-Level implants, which were 8 × 3.3 mm in size, and Astra Tech OsseoSpeed 3.5 S MicroThread implants, which were 8 × 3.5 mm in size. The histomorphometrical evaluation was performed at the end of 4- and 12-week healing. The implant-bone contact and bone volume percentage were assessed.
RESULTS:
The bone-to-implant contact (BIC) and the bone volume did not show any significant changes for both types of implants. The OsseoSpeed™ implants showed 67.4% and 65.3% BIC, respectively, at 4 and 12 weeks compared with 71.7 and 73.1 for the Straumann Bone-Level implants. The bone volume around both types of implants did not differ significantly at both time periods. The crestal bone resorption was observed for both types of implants. The first BIC at buccal side and lingual side of the implants also did not differ significantly for both implant systems.
CONCLUSIONS:
This study showed that Straumann Bone Level and OsseoSpeed implants induced similar bone response after immediate implantation at 4 and 12 weeks. The immediate implant placement resulted in peri-implant crestal bone-level changes for both types of implants.
© 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.
KEYWORDS:
bone level; bone preservation; implant design; microgap
PMID: 24690000 [PubMed - in process]

- by Anil Sukumaran and +2
- •
- Osseointegration, Dental Implants, Techniques in Dental Implantology and Related Surgical Procedures, Bone Level

The commonly used implantation technique involves a 2-stage surgical protocol for load-free and submerged healing to ensure predictable osseointegration. This article presents a new approach that benefits from previous bone and soft tissue protocols. It combines new surgical and insertion techniques to perform immediate loading with delayed implant placement, avoiding the problems of discomfort, inconvenience, and anxiety associated with healing periods. It maintains a similar success rate to the present common technique. After osteotomy, bone healing passes through 3 stages (i.e., inflammation, fibrous tissue, and maturation). In the new approach, implant insertion is performed 2 weeks after drilling (i.e., during the fibrous phase). The insertion timing is so selected because collagen formation and revascularization represent an acceptable implant bed configuration. Flap surgery offers the optimal osteotomy approach, but esthetic outcomes are definitely compromised. Accordingly, adopting the punch technique alleviates several postoperative problems, such as pain, tenderness, and swelling. Moreover, the punch technique avoids the sutures needed to adjust the gingiva around the abutment. It provides both cosmetic and functional properties.

- by Hazem Hassan
- •
- Dentistry, Architecture, Osseointegration, Treatment Outcome

Introduction: This clinical report outlines the surgical and restorative steps involved when a patient presented with an impacted maxillary
canine. The patient was treated with extraction and immediate implant placement. This was a challenge due to the bone resorption frequently
associated with complex tooth extraction that often necessitates bone regeneration in these cases. Case report: A 37-year-old female with an
impacted maxillary canine underwent implant therapy to restore function and esthetics. The surgical phase of treatment included extraction,
immediate implant placement, placement of a bone substitute and platelet-rich fibrin (PRF) membrane. One year follow up is presented. Conclusion: This report suggest that this treatment for maxillary impacted canines with dental implants is viable with a good outcome both functionally and aesthetically, although more work is needed to strengthen an adequate
protocol of this treatment alternative.

- by Britto Falcon
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- Dentistry, Periodontics, Implantology, Dental Research

Keratocysts are considered benign lesions, however, as has been reported in many works by different authors, it has been considered aggressive due to its expansion and high recurrence rate. Currently, numerous articles have been published worldwide on different studies for this type of pathology, which propose different treatment alternatives, ranging from conservative management, for example the use of adjuvants, chelators, cryotherapy, decompression, use of decompressive valves, etc. And surgical treatments among these are those carried out with local anesthesia and / or considered minor surgeries such as enucleations, surgical washes and curettage, of which block or extensive resection with or without reconstruction that can be done at the same time are mentioned Surgical or subsequent, so it was decided to carry out a combination of different treatments with which there is literature reporting their efficacy in order to provide a better prognosis to the patient and to avoid, if possible, achieving wide resections. Therefore, a representative case of a patient diagnosed with Keratocyst, treated in Maxillofacial Service of Specialty Hospital, National Medical Center, XXI Century, IMSS. With multimodal treatment, using different decompressive and reconstruction means is presented, resulting in the eradication of two large-sized lesions and without recurrence two years after their management.

Aims and Objective: Chemically modified and sandblasted acid‑etched (SAE) mechanism leads to wettability of surfaces of dental implants which helps in osseointegration. The present study was conducted to determine the implant stability quotient (ISQ) of SAE and SAE chemically modified dental implants.
Materials and Methods: The present study was conducted on 210 patients with 120 males and 90 females. Dental implants (Adin) with SAE (Group A) and SAE chemically modified (Group B) were inserted in patients. RFA was done immediately after implant insertion and after 1 week, 2 weeks, 6 weeks, 10 weeks, and 14 weeks. Results were statistically evaluated using SPSS Statistics for Windows, Version 21.0, IBM Corp., Armonk, NY, USA.
Results: Maximum patients were in the age group of 25–35 years
(males – 65, females – 48), followed by 35–45 years (males – 40, females – 32) and 45–55 years (males – 15, females – 10). Maximum dental implants were given in the right side (88) in males than females (56). On the left side, maximum implants were given in females (62) than males (56). Maximum RFA value of 86.2 and minimum value of 44.6 were observed in SAE dental implants (A). The maximum mean RFA
value in chemically modified implants SAE (B) was 89.4 and minimum was 32.5.
Conclusion: It was observed that surface treatment of dental implants shows higher implant–bone osseointegration. There is fastest osseointegration in implants with hydrophilic surfaces than those with SAE surfaces. ISQ was higher than 75 in both groups, which indicate higher implant stability.

Es inminente que durante los últimos años en el campo de la odontología se han desarrollado innumerables técnicas, infinidad de materiales, diversos equipos, pero sobre todo, un caudal de conocimientos. El conjunto de saberes que permiten establecer de manera racional un conocimiento objetivo genera principios, y estos a su vez permiten emerger filosofías en cuanto a la interpretación de un suceso en un determinado marco contextual. Zerón Agustín. La primera parte fue: ¿Implantología o Implantomanía? El dilema de la ignorancia. Rev.: Dentista y Paciente. 1999, Vol. 7, No. 84-6, P: 38-45.

- by Anil Sukumaran
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- Dentistry, Osseointegration, Dental Implants, Dogs
- by Dr.Manthan H Desai
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- Periodontics, Implantology, Dental Implants, Implants
- by Dennis Tarnow
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- Dentistry, Design, Biomedical Engineering, Dental Implants

Los implantes subperiósticos (ISP) surgieron como alterna- tiva a procedimientos implantológicos más complejos1, pero fueron relegados en favor de implantes endóseos por su difi- cultad y morbilidad asociadas a la técnica original2. Los ISP consisten en una estructura a medida situada subperióstica- mente3,4 sobre hueso cortical5. El objetivo del presente artículo es exponer una técnica novedosa, que los autores denominan Ranc-Implants, mediante la presentación de un caso clínico.

In today's health care establishments there is a great diversity of information systems. Each with different specificities and capacities, proprietary communication methods, and hardly allow scalability. This set of characteristics hinders the interoperability of all these systems, in the search for the good of the patient. It is vulgar that, when we look at all the databases of each of these information systems, we come across different registers that refer to the same person; records with insufficient data; records with erroneous data due to errors or misunderstandings when inserting patient data; and records with outdated data. These problems cause duplicity, incoherence, discontinuation and dispersion in patient data. With the intention of minimizing these problems that the concept of a Master Patient Index is necessary. A Master Patient Index proposes a centralized repository, which indexes all patient records of a given set of information systems. Which is composed of a set of demographic data sufficient to unambiguously identify a person and a list of identifiers that identify the various records that the patient has in the repositories of each information system. This solution allows for synchronization between all the actors, minimizing incoherence, out datedness, lack of data, and a decrease in duplicate registrations. The Master Patient Index is an asset to patients, the medical staff and health care providers. 1. HISTORY OF MASTER PATIENT INDEX History goes way back to 1950's when Automatic linkage of vital records by Newcombe (1) introduce how to bind the records through and get the unique combine records. There he tries to manage how to pair the surnames by using both father's surname and mother's maiden name. This article he suggested that the extent of efficiency of using surnames is more efficient than using the family group names to which two surnames are more efficient than one for identifying a family group has probably not been generally recognized. Design and implementation of a data base for medical records done in 1980's by Larry & Fleming (2) of the College of Health University and the department of Computer Science of Florida in the United States of America. Larry and Colleen (1) suggested data base for the medical record first time in the history of the human kind. Those days computer systems were not developed as such today by their effort of trying to develop a health record system must be highly appreciated. The medical record has been identified as the source of data for a computerized medical information system. Larry & Colleen (1) suggested a design of a computerized database for structuring some of the data normally recorded in the manual medical record. This design identifies objects of the health record which contain the computerized patient record. A method of transferring the computerized patient record to a low-cost method such as magnetic medium so calls old days large floppy disks and low volume hard disks at the time the patient is transferred from one health care institute to another healthcare institution. Low-cost hardware features were used to implementation of the above-computerized patient record for a health care institutes.

Purpose: To assess the influence of several factors on the prevalence of dental implant failure, with special consideration of the placement of implants by different dental surgeons. Materials and Methods: This retrospective study is based on 2,670 patients who received 10,096 implants at one specialist clinic. Only the data of patients and implants treated by surgeons who had inserted a minimum of 200 implants at the clinic were included. Kaplan-Meier curves were stratified with respect to the individual surgeon. A generalized estimating equation (GEE) method was used to account for the fact that repeated observations (several implants) were placed in a single patient. The factors bone quantity, bone quality, implant location, implant surface, and implant system were analyzed with descriptive statistics separately for each individual surgeon. Results: A total of 10 surgeons were eligible. The differences between the survival curves of each individual were statistically significant. The multivariate GEE model showed the following variables to be statistically significant: surgeon, bruxism, intake of antidepressants, location, implant length, and implant system. The surgeon with the highest absolute number of failures was also the one who inserted the most implants in sites of poor bone and used turned implants in most cases, whereas the surgeon with the lowest absolute number of failures used mainly modern implants. Separate survival analyses of turned and modern implants stratified for the individual surgeon showed statistically significant differences in cumulative survival. Conclusion: Different levels of failure incidence could be observed between the surgeons, occasionally reaching significant levels. Although a direct causal relationship could not be ascertained, the results of the present study suggest that the surgeons' technique, skills, and/or judgment may negatively influence implant survival rates. Int J Prosthodont 2017 (10 pages). doi: 10.11607/ijp.5151

Techniques in Dental Implantology and Related Surgical Procedures Research Papers (original) (raw)