Nesreen El Mekawy | Mansoura University (original) (raw)

Papers by Nesreen El Mekawy

article, Jan 10, 2019

Background: This study was aimed to evaluate the influence of inter-implant distance on the wear ... more Background: This study was aimed to evaluate the influence of inter-implant distance on the wear characteristics of low-profile stud attachments used in mandibular implant retained overdentures. Material and Methods: Forty Completely edentulous participants aged between 50-70 years were enrolled in this study. Each patient received 2-implants by 2-stage submerged surgical protocol. Participants categorized into 4-groups. Group I: 19 mm inter-implant distance with Locator retained overdentures; Group II: 19 mm interim plant distance with OT Equator retained overdentures; Group III: 25 mm inter-implant distance with Locator retained overdentures; Group IV: 25 mm inter-implant distance with OT Equator retained overdentures. The female housings of each attachment were picked up to the mandibular overdenture. 12 month later the male inserts were replaced by new one. The used retentive male inserts were examined by Stereomicroscopic. Results: Stereomicroscopic examination revealed wear were detected on both inner surface and, the core of male inserts. Comparison between the unused and the used Locator and OT equator retentive male inserts at various inter-implant distance revealed highly significant wear changes between them at either 19 mm, or 25 mm interim plant distance P1= .000, P2=.000 respectively. Conclusions: After one year of implant overdenture clinical use; both locator and OT equator retentive male inserts revealed significant surface deformities and wear. Wear were more notable on both locator and OT equator retentive male inserts with 25 mm interimplant distance than with 19 mm interimplant distance.

Indian Journal of Dental Research, May 31, 2020

Abstract Objectives: To evaluate the impact of implants number and attachments type on the peri‑i... more Abstract
Objectives: To evaluate the impact of implants number and attachments type on the
peri‑implant stresses and retention of maxillary palateless implant‑supported overdenture.
Materials and Methods: Four edentulous maxillary educational acrylic resin models were used.
According to the implants number and type of attachment used, four groups were compared: Group I,
2‑locator attachments in the canine area; Group II, 2‑ OT equator attachments in the canine area;
Group III, 4‑locator attachments in the canine, second premolar area and Group IV, 4‑OT equator
attachments in the canine, second premolar area. Implants retained palateless overdenture was
constructed on each model. Four self‑protected linear strain gauges were cemented on each implant.
A digital loading device was used to apply compressive loads to measure the resulting peri‑implant
stresses. Forcemeter and Universal testing machines were used to test the retention of palateless
overdenture. Results: A significant difference between the same implant number and distribution
with different attachments was found (P = 0.003, P = 0.020), respectively. Least stresses amount
was found around the 4‑implant locator palateless overdenture, while the highest was found around
the 2‑implant OT equator palateless overdenture. Nevertheless; the result was that 2‑implant locator
palateless overdenture recorded insignificant higher retentive forces than the 4‑implant OT equator
one. Conclusions: It can be concluded that the implant-retained palateless overdenture with four
locator attachments is considered a promising treatment option regarding stress distribution. Using
locator attachments, for implant-retained palateless overdenture with either two or four implants
considering their superior retentive properties, is advantageous when compared to OT equator
attachments.

IP innovative publication pvt. ltd, 2019

Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK... more Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK removable partial dentures fabricated with various techniques.
Materials and Methods: Six patients were selected for this study with maxillary completely edentulous arch against mandibular distal extension ridges posterior to canine teeth. each patient was randomly given the following frameworks in a crossover design; Group I: All patients were received PEEK frameworks fabricated by milling via CAD-CAM technique (PEEK disc were used). Group II: All patients were received PEEK frameworks fabricated by injection molding technique (Granular form of medical grade PEEK). For each framework (milled & injected), the fitness evaluation were done by measuring the gap between the framework and oral structures by evaluation the thickness of light body poly vinyl- siloxane impression material.
Results: The mean overall and site specific values of Gap distance beneath frameworks fabricated by CAD-CAM technique was significantly higher than the mean values of Gap distance in frameworks fabricated by injection technique.
Conclusion: Within the limitations of this short-term clinical study it was concluded that: 1) The fitness of both techniques of the RPD PEEK BioHPP frameworks manufacture were clinically accepted by the participants. 2) The RPD PEEK BioHPP frameworks manufactured by CAD / CAM was less fitness values than BioHPP frameworks constructed by Injection molding technique.
Keywords: Kennedy class I, Polyetheretherketone, CAD/CAM technique, Injection mold technique, Removable partial denture fitness.

Purpose: Evaluation of implant overdenture retention at 23mm standard inter-implant distance usin... more Purpose: Evaluation of implant overdenture retention at 23mm standard inter-implant distance using OT Equator and locator attachments. Materials and methods: Twelve completely edentulous patients were selected for this study. For all patients, conventional complete dentures were constructed. Mandibular dentures were replicated into stereolithographic implant placement guide using CBCT. Every participant received 2-implants in the anterior mandibular area with inter-implant distance of 23 mm. After the osseointegration period, the mandibular conventional dentures were converted into implant retained overdentures attached with Locator attachment for (group I) (six patients) and OT Equator attachments for (group II) (six patients). Retention was evaluated for conventional mandibular complete dentures (T0), 3-months (T3) and, 6-months (T6) after overdenture insertion using digital force-meter. Results: Results revealed that there was a statistically significant difference between the study groups representing mean retention force (P<0.05) except at T0 (baseline evaluation with conventional dentures) with higher mean values for group I (Locator attachment) than group II (OT Equator attachment). Conclusion: Regarding the limitations of this study:-Inter-implant distance of 23 mm for 2-implant overdentures could be considered a reliable modality for edentulous mandible.-Locator attachment may be preferable than OT Equator attachment regarding 2-implant overdenture retention at 23 mm inter-implant distance.

Background: For implant overdenture therapy, implant positions are diverse and seemingly arbitrar... more Background: For implant overdenture therapy, implant positions are diverse and seemingly arbitrary; many based their evidence upon empirical information without evidence-based dental theory.

Fitness evaluation of mandibular kennedy class I BioHPP Poly-Ether-Ether ketone removable partial denture fabricated by various techniques, 2019

Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK... more Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK removable partial dentures fabricated with various techniques. Materials and Methods: Six patients were selected for this study with maxillary completely edentulous arch against mandibular distal extension ridges posterior to canine teeth. each patient was randomly given the following frameworks in a crossover design; Group I: All patients were received PEEK frameworks fabricated by milling via CAD-CAM technique (PEEK disc were used). Group II: All patients were received PEEK frameworks fabricated by injection molding technique (Granular form of medical grade PEEK). For each framework (milled & injected), the fitness evaluation were done by measuring the gap between the framework and oral structures by evaluation the thickness of light body poly vinyl-siloxane impression material. Results: The mean overall and site specific values of Gap distance beneath frameworks fabricated by CAD-CAM technique was significantly higher than the mean values of Gap distance in frameworks fabricated by injection technique. Conclusion: Within the limitations of this short-term clinical study it was concluded that: 1) The fitness of both techniques of the RPD PEEK BioHPP frameworks manufacture were clinically accepted by the participants. 2) The RPD PEEK BioHPP frameworks manufactured by CAD / CAM was less fitness values than BioHPP frameworks constructed by Injection molding technique.

Clin. Oral Impl. Res., 2012

Objectives: The aim of this study was to evaluate and compare marginal bone loss and clinical out... more Objectives: The aim of this study was to evaluate and compare marginal bone loss and clinical
outcomes of conventionally and immediately loaded two implants supporting a ball-retained
mandibular overdenture.
Materials and methods: Thirty six completely edentulous patients (22 males and 14 females) were
randomly assigned into two groups. Each patient received two implants in the canine area of the
mandible after a minimal flap reflection. Implants were loaded by mandibular overdentures either
3 months (conventional loading group) or the same day (immediate loading group) after implant
placement. Ball attachments were used to retain all overdentures to the implants. Vertical and
horizontal alveolar bone losses were evaluated in both groups 1 and 3 years after implant placement
using multislice computed tomography, which allow evaluation of peri-implant buccal and lingual
alveolar bone. Plaque scores, gingival scores, probing depths and periotest values (PTVs) were
evaluated at 4 months (baseline), 1 and 3 years after implant placement. Clinical and radiographic
evaluations were performed at distal, labial, mesial and lingual peri-implant sites.
Results: After 3 years of follow-up period, the immediate loading group recorded significant vertical bone
loss at distal and labial sites than the conventional loading group and no significant differences in
horizontal bone loss between groups were observed. Probing depth at distal and labial sites in the
immediate loading group were higher than the conventional loading group, while plaque scores, gingival
scores and PTVs showed no significant differences between the two groups. A low level of positive
correlation between plaque scores, gingival scores, probing depths and vertical bone loss was noted.
Conclusion: Immediately loaded two implants supporting a ball-retained mandibular overdenture are
associated with more marginal bone resorption and increased probing depths when compared with
conventionally loaded implants after 3 years. The bone resorption and probing depths at distal and labial
sites are significantly higher than those at mesial and lingual sites. Clinical outcomes do not differ
significantly between loading protocols.

Abstract Purpose: to compare the effect of different locator abutments height on peri-implant tis... more Abstract
Purpose: to compare the effect of different locator abutments height on peri-implant tissue health in retained mandibular overdenture.
Material and method: Twelve completely edentulous patient were selected to this study. Each patient will received two implant in the canine area of the mandibular arch using early loading protocol. patients were grouped as follow: Group I: the locator abutment height is 1mm. Group II: the locator abutment height is 2mm. Group III: the locator abutment height is 3mm.clinical evaluation were carried out at the time of insertion(T0),3 months(T3),6 monthes (T6) after insertion.
Results: there was statistically significant increase in plaque index and probing depth between group 1mm, 2 mm and 3 mm in different period 3and 6 monhts except mesial side after 3months.there was statistically insignificant decrease in bleeding on probing.
Conclusin: locator abutment showed favorable perimplant tissue health especially group Ⅰ better than group Ⅱ and group Ⅱ is better than group IⅡ.

article, Jul 2019

Abstract Background: Clasp materials play a critical role in overall aesthetic outcomes of remova... more Abstract
Background: Clasp materials play a critical role in overall aesthetic outcomes of removable partial dentures. The long-term maintenance of these outcomes depends on color stability of these materials. Staining of prosthodontics materials may result in patient dissatisfaction and additional expense for replacement.
Purpose: The purpose of this in vitro study was to evaluate the effect of various commonly consumed beverages on the color stability of Acetal resin clasps when being polished or left non-polished.
Materials and methods: A normative class IV Kennedy partially edentulous maxillary heat cure acrylic resin model was chosen, duplicated to obtain the stone master casts .10 Acetal resin RPDs were constructed and finished. A mechanical polishing was performed for the ten left clasps of Acetal resin RPDs while leaving the right ones to be non-polished. Before immersion, Acetal resin RPDs were analyzed for color characteristics against a gray background with A3 using a spectrophotometer. They were immersed in four beverages media (tea, coffee, cola, and orange juice).The Specimens were removed at 1, 7, and 28 days respectively, desiccated, and analyzed by the spectrophotometer.

Results: The results reported statistically significant differences between polished and non-polished clasps for both tea and orange juice solutions (0.03* and 0.006* respectively).
With respect to (L) parameter (lightness), higher mean values were revealed for non-polished Acetal resin clasps when being immersed in tea and orange juice solutions (71.1±2 2.7 and 72.5 ±1.28 respectively).Whilst this significant difference is also for coffee solutions only (P=0.004*) concerning (A) parameter (red/ green value). No significant difference was revealed for (B) parameter (yellow/ blue value) and (W) (whiteness) when immersing Acetal clasps (polished and non -polished) in all solutions under investigation.

Conclusion: Color changes were exhibited by non-polished clasps specimens immersed in tea, coffee and orange juice solutions. Polishing procedures significantly improve the color stability of Acetal resins clasps when being immersed in commonly consumed beverages.

article, Mar 2019

Aim of study: this finite element study aimed to analyze stress distribution within the number of... more Aim of study: this finite element study aimed to analyze stress distribution within the number of implants used to retained implant palatelessoverdenture by ball attachment. Material and Methods: This study was carried out on maxillary completely edentulous clear acrylic resin model with four dummy implants inserted, two in canines' area and two in second premolars region. The ridge was covered by auto-polymerized soft-liner material to simulate the mucosa. The model was duplicated with dental stone and the palatelessoverdenture was prepared over the implants and retained by ball attachment. Model was scanned using a 3D scanner and geometry information was recorded in IGES format. Finite element modeling was carried out using ANSYS version 16.0. Result:The lowest stresses (Von Mises) were induced on spongy bone of ball attachments in vertical unilateral loading which value was (0.66 MPa). With ball attachments the stresses in spongy bone were nearly the same with unilateral and bilateral vertical loading. The simulated mucosa was higher stresses induced with ball attachment in bilateral vertical loading if compared to attachments with unilateral vertical loading. Conclusion: within the limitations of the study it was observed that in compact bone and spongy bone the highest Von Mises stresses were observed ball attachments with vertical bilateral loading while lowest stresses were induced in ball attachments with vertical unilateral loading.

IOSR Journal of Dental and Medical Sciences (IOSR-JDMS), Feb 2019

Abstract Purpose: This in vitro scanning electron microscope study was performed to evaluate the ... more Abstract
Purpose: This in vitro scanning electron microscope study was performed to evaluate the influence of various polishing protocols on polyether-ether-ketone removable partial frameworks surface topography that fabricated by CAD / CAM.
Materials and Methods: an epoxy resin model represent maxillary class I Kennedy classification with remaining natural teeth extending from the first premolar on one side to the first premolar teeth on the other side were used in the study. First premolars and canines of epoxy resin model were prepared to receive full ceramo-metal crowns with mesial occlusal and cinglum rest seat, distal guiding planes, and first premolars mesio-buccal retentive undercuts of 0.50 mm depth. 3 specimens of the modified polyetheretherketone RDP frameworks were fabricated by CAD/CAM techniques. According to polishing protocols the themodified polyetheretherketone RDP frameworks were divided into three groups: Group I (control group): modified polyetheretherketone RDP frameworks without polishing, Group II: modified polyetheretherketone RDP frameworks was polished by using Abraso-Starglanz polishing system and Group III: modified polyetheretherketone RDP frameworks was polished by using Acrypol polishing system. Surface changes between groups before and after polishing by different polishing protocols were evaluated by scanning electron micro-scope (SEM).
Results: It was noted that (group I) showed the highest surface roughness while the lowest surface roughness and highly smooth surface was showed in (group II). By using Student’s t-test for comparing between groups, group II showed significance decrease in surface roughness compared to that in (group I) and group III where (p<0.001). Conclusions: Within the limitations of this study, it was concluded that: Polishing PEEK RPD framework with abraso-starglaz paste was the most effective and promising polishing technique in production of highly smooth surface than acrypol polishing paste. For the laboratory-based protocols, both abraso-starglaz and acrypol polishing pastes produce a significantly smoother PEEK surface than that of the non-polished PEEK.

ABSTRACT BACKGROUND: Several patients notice the value of completely edentulous mandibular ridge ... more ABSTRACT
BACKGROUND: Several patients notice the value of completely edentulous mandibular ridge
therapy through complete overdenture implants to be on the far side their money scope, mandibular
overdentures reatined by one implant are reported to be more leisurely and function better than
conventional complete dentures. The goal of the current study were to analyze the clinical outcomes
in comparison between two types of attachments, the locator attachment versus the equator
attachment used with immediately loaded single implant retained mandibular overdenture opposing
conventional complete denture.
METHODS: Ten completely edentulous patients were managed with a single implant inserted
into the midline of the mandible, followed by rehabilitation with complete dentures and divided
into two equal groups: Group I patients receive locator attachment, while Group II receive equator
attachment. Immediately after implant placement the implant stability quotient (ISQ) reading of a
minimum of 60 was measured before considering connection of the attachment. Then the denture
was relieved in the midline providing adequate space for female housing of the attachment and then
the denture was picked up directly in the mouth. The clinical outcome evaluated two weeks, three
months and six months after implant insertion.
RESULTS: The peri-implant soft tissues assessment results showed no statistically significant
difference within each group and between two groups at different evaluation period, but the result
of the probe depth in the present study showed statistically significant increase within the pair
groups, but there is no significant variation between the pair groups.
CONCLUSION: Immediately loaded single midline implant retained mandibular overdenture
treatment with locator attachment could be an alternative and cost effective treatment option and
relatively simply treatment.

Aim: The aim was to evaluate the efficacy of attachment placement on initial stability and bone h... more Aim: The aim was to evaluate the efficacy of attachment placement on initial stability and bone height changes for immediately loaded single-implants retaining mandibular overdentures. Methodology: Twenty edentulous patients were recruited for this study; 9 females (45.0%) and, 11 males (55.0%) (age ranged from 59.0 to 70.0 year). Single endosseous implant was inserted in the mandibular midline region. Immediately after surgery; Locator abutment was secured on the implant, and the male housing was connected intraorally using direct pickup procedure. Marginal bone height measurements and implant stability values were assessed at the time of implant placement (baseline), 2, 4, 6, 8, 12, 24 weeks then every 6-month interval up to 18 months post-implant placement. Results: The implant stability values decreased markedly from the baseline, during 4 weeks and, then increased gradually until reaching the initial values after 12 weeks followed by continuous increase to study's end (p<0.05). The peri-implant marginal bone level revealed an acceptable range of bone loss with a statistically significant differences between different follow-up times, and it continued to the end of the study (p<0.05). Conclusions: Retaining an overdenture by immediately loaded single implant could be a successful treatment option for mandibular edentulous arches, especially in people with limited financial resources. The use of Locator attachment seemed to have a favorable effect on implant stability and marginal bone around immediately loaded single implant mandibular overdenture after 18-months of function. How to cite this article: Abdel-Khalek EA, El Mekawy N. Implant stability and bone height changes for immediately loaded single implant-retained mandibular overdentures with locator attachments. Int Dent Res 2018;8(3):96-104.

EGYPTIAN DENTAL JOURNAL, 2019

objectives: This research highlights on the effect of polyamide clasp on the bone height changes ... more objectives: This research highlights on the effect of polyamide clasp on the bone height changes of the abutment teeth and the bite force change comparing to conventional wrought wire clasp in a split mouth study. materials and methods: This split mouth research was carried out on 14 partially edentulous participants with mean age (61.14) year. For every participant, a resin bilateral distal extension removable partial denture was constructed to be retained by a wrought wire clasp on one side and a polyamide clasp on the other. Standardized digital periapical radiograph was used to evaluate the abutment alveolar bone height change after 12 and, 18 months from denture insertion. Bite force transducer was used to measure the bite force for both clasp types sides at insertion and after 18 month of follow up. results: At comparing bone height change after insertion with the baseline, there was a significant increase in the bone resorption with the polyamide clasp after 18 month in mesial and distal aspect (p= 0.01 and 0.04 respectively); and after 12 month at mesial side (p=0.01). There is also a significant difference in bone height change around abutments carry both clasp types at 12 and 18 months in distal side (p= 0.03 and 0.001 respectively); and in the mesial side (p= 0.02 and 0.01 respectively). The evaluation of the bite force revealed significant difference between measurements at time of insertion and 18 months of for polyamide and wrought clasp sides (p= 0.02 and 0.043 respectively). conclusion: This study results illustrated that both types of clasps were appropriate to be used with the acrylic removable partial denture as their influence on the abutment alveolar bone resorption is within the acceptable range of bone resorption. While there is a nonrelated-clasp type improvement in bite force. (52)

Journal of Dental Implants, 2018

Objectives: The goal of this study was to evaluate the effect of using prefabricated stress-free ... more Objectives: The goal of this study was to evaluate the effect of using prefabricated stress-free implant bar (SFI-Bar) on marginal bone loss around tilted or axially placed and immediately loaded two implants for retaining mandibular overdentures. Materials and Methods: Thirty patients with a mean age of 56.5 years were chosen. Patients were divided into two groups as follows: Group (AB) (n = 15): Patients received two axially implants connected by SFI-Bars for retaining mandibular overdentures. Group (TB) (n = 15): Patients received two mesially tilted implants connected by SFI-Bars for retaining mandibular overdentures. For each patient, two dental implants (3.8 mm × 12 mm) were bilaterally inserted in the canine regions. Implants were immediately loaded with SFI-Bar system overdentures. Digital periapical radiographs were scheduled at implant placement (baseline) and subsequently after every 12 months up to 36 months to measure peri-implant bone loss (PiBL). The recorded data were subjected to statistical analysis. Results: Both groups showed insignificant PiBL at 12 and 24 months, while at 36 months, patients in Group TB showed significantly higher marginal PiBL than that with Group AB. Conclusions: Prefabricated SFI-Bar retained mandibular overdentures could offer an alternative attachment for two angulated, immediately loaded implants with predictable radiographic outcomes.

Purpose: The aim of this study was to compare surface changes of the locator attachment nylon ret... more Purpose: The aim of this study was to compare surface changes of the locator attachment nylon retentive male inserts after immersion in three different cleansing solutions by using Scanning Electron Microscope (SEM). Material and Methods: 18 mandibular overdentures were constructed to fit over a mandibular clear acrylic resin test model. 36 specimens of clear, and blue Locator attachment retentive male inserts (n=36) were soaked into three different denture-cleansing solutions. Group I: water; Group II: Corega cleansing solution, and Group III: Protefix cleansing solution. The retentive male inserts wear evaluated by using Scanning Electron Microscope, after, insertion/removal test for 120, 360, and 720 continuous cycles corresponding to one month, three months, and six months clinical simulation. The surface changes of retentive male inserts was compared between different time periods using repeated measures ANOVA followed by Bonferroni; and, among different groups using One way ANOVA followed by post-hoc tukey. Results: Denture-cleaning solutions significantly induced surface changes of different retentive male inserts of locator attachments after one month clinical simulation. Water induced wear of blue male insert significantly higher than corega and protefix solutions after six months clinical simulation (p=0.027). Blue retentive male insert revealed significant increased surface changes after soaking in water in comparison to clear male inserts after six months clinical simulation. Conclusions: Locator attachment retentive male inserts in various colors are affected differently by varied cleansing agents. The surface changes of clear retentive male inserts were insignificant with water, corega, and protefix at six months clinical simulation. While; the surface changes of blue attachments increased significantly with water possibly requiring more frequent replacements of these types of attachments.

purpose: the palateless denture is the favorable to restore the edentulous maxilla. The compromis... more purpose: the palateless denture is the favorable to restore the edentulous maxilla. The compromised retention and support are compensated with implants. While there is different material for the denture base, the aim of this in vitro study was to evaluate stresses transmitted from the denture base of thermoplastic nylon resin and the rigid acrylic denture base lined by silicone-based soft-liner four implants. materials and methods: One acrylic model with silicon mucosal simulation was fabricated with four dummy in both canines and second bi-cuspid. According to material the denture bases were divided into two groups (group i) palataless denture with acrylic denture base relined with soft liner (group ii) palateless denture with thermoplastic nylon material denture base. Two dentures were fabricated and connected to implants with ball attachments. Four strain gauges were bonded to the acrylic resin model at mesial, distal, buccal, lingual surfaces of each implant. 60 N static loads were applied bilaterally over mesial cusp of the first molar and unilaterally over central occlusal fossa of the first molar, stresses were measured at mesial, distal, buccal, lingual peri-implant sites. result: The highest strain recorded at thermoplastic nylon denture, followed by Acrylic denture with soft liner. The highest strain recorded at distal surface followed by mesial, palatal buccal surface. Anterior implants recorded higher strain than posterior implants. conclusion: using of acrylic palateless overdenture lined with soft liner with four implants possible to minimize stress transmitted to implants over than the thermoplastic nylon material.

ABSTRACT Purpose: assessment of the influence of attachment types and standard inter-implant dist... more ABSTRACT
Purpose: assessment of the influence of attachment types and standard inter-implant distance
on retention of mandibular implant overdentures
Material and methods: Twelve fully edentulous patients were enrolled for this study.
Conventional complete dentures were made and duplicated into stereolithographic surgical guide
using CBCT. According to implant planning, each patient received two anterior mandibular
implants placed at the anterior region bilaterally with inter implant-distance 19 mm . After 3-4
months osseointegration period, OTEquator attachments were screwed to the implants for group A
and Locator attachment were screwed to implants for group B, and matrices were picked-up into
the mandibular overdenture. The retention of the mandibular overdenture was evaluated before
insertion (T0),at time of insertion of mandibular over-denture (T1), three months after insertion (T3
Results: Comparing the retentive forces of the prosthesis at different periods of study, there
was statistically significant decrease in retention measurements before over denture insertion,
significant increase in retention at time of insertion of overdenture Also a significant increase of
retention after 3 months from denture insertion was observed
Conclusion: Two implant overdenture with OTEquator and Locator attachments could be a
reliable treatment option for edentulous mandible in this short term study .

purpose: The study aimed to compare progression of masticatory efficiency associated with mandibu... more purpose: The study aimed to compare progression of masticatory efficiency associated with mandibular bar-supported overdentures either retained by immediately or delayed loaded two implants. material and methods: A total 12 completely edentulous patients with persistent complaints from their complete mandibular dentures were chosen. Each participant received two dental implants of (3.8 mm x 12 mm) bilaterally using computer-guided flapless surgery. The participants were grouped according to the bar attachment design into two equal groups. group sb: six participants received mandibular overdenture supported by immediately loaded two implants connected with prefabricated SFI-Bar system. group Cb: six participants received mandibular overdentures supported by delayed loaded two implants splinted with conventional cast Co-Cr bar attachment. Glucose extraction method was performed to objectively measure the masticatory efficiency for each patient at different time points including; including; one week after implant-bar connections connections (T0), six months after implant-bar connections (T6), and 12 months after implant-bar connections (T12). results: There were statistically significant difference of masticatory efficiency between the (SB) and, (CB) (P=.004 and P=.001 respectively). Starting from T0, the findings showed highly statistical significance (P=0.000) in improving the masticatory efficiency at (T6) and (T12) respectively. Conclusion Regardless the limitations of this clinical study, it can be conclude that restoring edentulous patient with mandibular overdenture assisted with bar improves the masticatory efficiency with a noticeable statistical improvement of masticatory efficiency for immediate versus delayed loading protocol.

article, Jan 10, 2019

Indian Journal of Dental Research, May 31, 2020

IP innovative publication pvt. ltd, 2019

Fitness evaluation of mandibular kennedy class I BioHPP Poly-Ether-Ether ketone removable partial denture fabricated by various techniques, 2019

Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK... more Purpose: The purpose of this study was to evaluate the fitness of mandibular Kennedy class I PEEK removable partial dentures fabricated with various techniques. Materials and Methods: Six patients were selected for this study with maxillary completely edentulous arch against mandibular distal extension ridges posterior to canine teeth. each patient was randomly given the following frameworks in a crossover design; Group I: All patients were received PEEK frameworks fabricated by milling via CAD-CAM technique (PEEK disc were used). Group II: All patients were received PEEK frameworks fabricated by injection molding technique (Granular form of medical grade PEEK). For each framework (milled & injected), the fitness evaluation were done by measuring the gap between the framework and oral structures by evaluation the thickness of light body poly vinyl-siloxane impression material. Results: The mean overall and site specific values of Gap distance beneath frameworks fabricated by CAD-CAM technique was significantly higher than the mean values of Gap distance in frameworks fabricated by injection technique. Conclusion: Within the limitations of this short-term clinical study it was concluded that: 1) The fitness of both techniques of the RPD PEEK BioHPP frameworks manufacture were clinically accepted by the participants. 2) The RPD PEEK BioHPP frameworks manufactured by CAD / CAM was less fitness values than BioHPP frameworks constructed by Injection molding technique.

Clin. Oral Impl. Res., 2012

article, Jul 2019

article, Mar 2019

IOSR Journal of Dental and Medical Sciences (IOSR-JDMS), Feb 2019

EGYPTIAN DENTAL JOURNAL, 2019

Journal of Dental Implants, 2018

Narrow dental implants can provide support for stabilization of a removable full and partial dent... more Narrow dental implants can provide support for stabilization of a
removable full and partial dentures and can be installed with a minimally
invasive surgery thus it is a recommended for the patients who are
compromised condition. In addition narrow dental implants can be used in
cases where there may be anatomical, medical or financial constraints.