The influence of implant-abutment connection to peri-implant bone loss: A systematic review and meta-analysis (original) (raw)
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Implant – Abutment Connections : A Review on Marginal Bone Loss
The Journal of Prosthetic and Implant Dentistry
Dental implants have been used for replacement of missing teeth. Various factors are considered to determine the success rate of dental implants. One of the important factors determining the success rate is peri-implant bone loss that occurs subsequently after implant placement . A variety of etiological factors have been listed responsible for peri-implant bone loss. One among the etiological factors for bone loss pertaining to implant geometry is implant-abutment connection type. Implant abutment connection type should be designed to minimize the bone loss around implants. Hence it is important to analyze and compare the bone changes that occur around implants with different connection types to choose an appropriate type for achieving maximum success rates.
The International Journal of Oral & Maxillofacial Implants, 2019
Background: The interpretation of the results of randomized clinical trials is often questioned in relation with daily circumstances in practices. This prospective observational multicenter study was instigated to reflect the need for information in real-life situations with dental implants with internal conical implant-abutment connection (Conelog implant system). The implants were followed up at least 5-year post-loading; survival analysis (Kaplan-Meier), changes of soft tissue, and bone level over time, as well as patient satisfaction were evaluated. Results: In total, 130 dental implants were placed in 94 patients (64 female, 30 male). Mean age of patients was 50.4 ± 13.7. At 5-year post-loading, 104 implants in 76 patients were available for evaluation. The cumulative implant survival rate was 96.6%. After an initial bone remodeling process post-surgery (bone loss of − 0.52 ± 0.55 mm), the bone level change remained clinically stable from loading to 5-year post-loading (− 0.09 ± 0.43 mm). Patient satisfaction surveyed by questionnaire (comfort, ability to chew and taste, esthetics, general satisfaction) steadily increased towards the end. At the last study follow-up, all the patients rated their general satisfaction as either very satisfied (87.5%) or satisfied (12.5%). Conclusion: The study implants have shown to be highly effective with reliable peri-implant tissue stability over the 5 to 7 years of observation for both single tooth restorations and fixed partial dentures while used in standard conditions in daily dental practice. The results obtained are comparable with those obtained in controlled clinical trials.
Journal of Pre-Clinical and Clinical Research
Introduction. One of the criteria of implant therapy success is marginal bone loss. The objective of the study was to assess the correlation between peri-implant marginal bone loss and implant-abutment connection systems used in the same patient, as well as other specific characteristics of implant treatment. The initial research hypothesis assumed that there was no difference in marginal bone loss around implants with different implant-abutment connection systems placed in the same patient. Materials and method. Marginal bone loss was assessed around implants with two different types of implant-abutment connection: with conical (Type I) and with internal hexagonal (Type II) in the same patient. The study included 28 patients aged 37-66 years. Results. Marginal bone loss around Type I implants was 0.112 mm/month before loading with prosthetic restorations, and 0.010 mm/month after loading, while for Type II implants it reached, respectively, 0.123 mm/month and 0.030 mm/month. Marginal bone loss after loading with prosthetic restorations was 11 times lower for Type I implants and 4 times lower for Type II implants. Evaluation of marginal bone loss in the studied patient groups was made on the basis of orthopantomographic radiographs. Conclusions. Implants with conical implant-abutment connection are significantly more favourable to osseointegration than those with internal hexagonal connection. As marginal bone loss is faster before loading implants with prosthetic restorations than after loading, it is advisable to consider early loading if the necessary clinical conditions are met.
The Journal of Advanced Prosthodontics
PURPOSE. The design of the implant-abutment complex is thought to be responsible for marginal bone loss (MBL) and might affect the condition of the peri-implant tissues. This the present study aimed to evaluate the influence of the implant-abutment complex on MBL and the peri-implant tissues in partially edentulous patients treated with dental implants and determine the most advantageous design. MATERIALS AND METHODS. A total of ninety-one endosseous implants with different designs of implant-abutment complex [tissue level-TL (n = 30), platform switch-PS (n = 18), and platform match-PM (n = 43)] were reviewed for MBL, Probing Pocket Depth (PPD) and Bleeding on Probing (BoP). MBL was calculated for first year of the insertion and the following years. RESULTS. The median MBL for the PM implants (2.66 ± 1.67 mm; n = 43) in the first year was significantly higher than those for the other types (P=.033). The lowest rate of MBL (0.61 ± 0.44 mm; n = 18) was observed with PS implants (P=.000). The position of the crown-abutment border showed a statistically significant influence (P=.019) and a negative correlation (r=-0.395) on MBL. BoP was found significantly higher in PM implants (P=.006). The lowest BoP scores were detected in PS implants, but the difference was not significant (P=.523). The relation between PPD and connection type revealed no statistically significant influence (P>.05). CONCLUSION. Within the limitations of the present study, it may be concluded that PS implants seem to show better peri-implant soft tissue conditions and cause less MBL. [
Factors Influencing Marginal Bone Loss around Dental Implants: A Narrative Review
Coatings, 2021
Implant supported dental prostheses are increasingly used in dental practice. The aim of this narrative review is to present the influence of transmucosal surface of prosthetic abutment and implant on peri-implant tissue. The article describes causes of bone loss around the dental implant. Moreover, properties of different materials are compared and discussed. The advantages, disadvantages, and biomechanical concept of different implant-abutment connections are presented. The location of connections in relation to the bone level and the influence of microgap between the abutment and implant are described. Additionally, the implant abutments for cemented and screwed prosthetic restorations are compared. The influence of implant and abutment surface at the transmucosal level on peri-implant soft tissue is discussed. Finally, the biological aspect of abutment-implant connection is analyzed.
Biomedicines
The aim of this study was to assess and compare the marginal bone loss between two different categories of implants (Winsix, Biosafin, Ancona, Italy) having the same diameter and belonging to the Torque Type® (TT®) line, in the internal hexagon version (TTi, Group A) and in the external hexagon configuration (TTx, Group B). Patients with one or more straight implants (insertion parallel to the occlusal plane) in the molar and premolar regions in association with tooth extraction at least 4 months prior to implant insertion, who have a fixture diameter of 3.8 mm, who followed up for at least 6 years, and whose radiographic records were available were enrolled in this study. Depending on implant connections (externally or internally), the sample was divided into groups A and B. For externally connected implants (66), the marginal resorption was 1.1 ± 0.17 mm. The subgroup of single and bridge implants showed no statistically significant differences with a marginal bone resorption of 1...
Frontiers of Oral and Maxillofacial Medicine
The crestal bone stability and the long-term presence of bone crest at the level of the implant platform to achieve implant success and esthetic outcomes is of paramount importance. The paper presents and academic and clinical evaluation of the literature on the characteristic features of the implantabutment connection, the main characteristic of an implant collar and platform to control the microgap and bacteria proliferation leading to prevention of crestal bone loss. In addition, the role of the abutmentdisconnection, the size of the horizontal mismatch, and last but not least the importance of the Morsetapered connection has been discussed as fundamental requirements for improvement of implant success and long-term successful esthetic outcomes. The author presents also clinical and histological information on the implant abutment connection, which is beneficial for the bone stability. All this scientific information must be critically analyzed in the modern implant dentistry when new implant surfaces and implant-abutment connections are developed to improve strategies for better osseointegration and sustainable crestal bone stability.
The International journal of oral & maxillofacial implants
The objective of this systematic review was to compare the loss of marginal bone between implants with internal and external connections by analyzing results reported in studies published after 2010. A literature search in MEDLINE with the keywords "dental implant connections, external internal implant connection, bone loss implant designs, internal and external connection implant studies in humans" was conducted. Clinical trials on human beings, comparing both connections and published in English, from 2010 to 2016 were selected. Their methodologic quality was assessed using the Jadad scale. From the initial search, 415 articles were obtained; 32 were chosen as potentially relevant based on their titles and abstracts. Among them, only 10 finally met the inclusion criteria. A total of 1,523 patients with 3,965 implants were analyzed. Six out of 10 studies observed that internal connections showed significantly less bone loss compared with external connections. The remainin...