scholarly journals Impact of implant-abutment connection, positioning of the machined collar/microgap, and platform switching on crestal bone level changes. Camlog Foundation Consensus Report.

2013 ◽  
Vol 25 (11) ◽  
pp. 1301-1303 ◽  
Author(s):  
Frank Schwarz ◽  
Gil Alcoforado ◽  
Katja Nelson ◽  
Alex Schaer ◽  
Thomas Taylor ◽  
...  
Keyword(s):  
Implant Abutment ◽  
Bone Level ◽  
Platform Switching ◽  
Consensus Report

The Effect of Different Implant-Abutment Mis-Matches on Stress Distribution: A 3-Dimensional Finite Element Study

2021 ◽  
Author(s):  
Douglas Albert Deporter ◽  
Vahid Esfahanian ◽  
Armin khosravi ◽  
Mohammad Ketabi
Keyword(s):  
Finite Element ◽  
Bone Density ◽  
Marginal Bone Loss ◽  
3 Dimensional ◽  
Posterior Maxilla ◽  
Implant Abutment ◽  
Modeling Software ◽  
Dimensional Finite Element ◽  
Platform Switching ◽  
Element Study

Platform-switching reduces peri-implant marginal bone loss (MBL), and the aim of this study was to compare the effect of platform-switching on stress within crestal bone using different implant-abutment mis-matches (0.65 and 1mm) under two different vertical loads (30 N vs 200 N) for implants placed in posterior jaw sites. 3-D modeling software was used for an implant of 4.5mm diameter and 13mm length. Molars were modeled using CT images of bone density in human maxilla (D3 bone) and mandible (D2 bone). Collected data were analyzed using CATIA software. In posterior mandible, stress of 30 N force with platform mis-matches of 0.65 or 1mm were 2.920 and 2.440 MPa respectively. Using 200 N force, values increased to 19.44 and 16.30 MPa. In posterior maxilla and 30 N force, stresses with mis-matches of 0.65 and 1mm were 3.77 and 3.18 MPa respectively increasing to 25.14 & 20.17 with 200 N force. The effect can be predicted to be greatest as the mis-match increases with implants placed into lower quality bone (posterior maxilla with D3 quality).

Quality Assessment of Systematic Reviews on Platform-Switching vs Platform-Matched Implants: An Overview

2020 ◽  
Vol 46 (2) ◽  
pp. 153-162
Author(s):  
Joel Ferreira Santiago ◽  
Cleidiel Aparecido Araújo Lemos ◽  
Jéssica Marcela de Luna Gomes ◽  
Fellippo Ramos Verri ◽  
Sandra Lucia Dantas Moraes ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Systematic Reviews ◽  
Meta Analysis ◽  
Mean Difference ◽  
Quality Analysis ◽  
Electronic Library ◽  
Implant Abutment ◽  
Bone Preservation ◽  
Platform Switching ◽  
Meta Analyses

The objective of this study was to perform a quality analysis of systematic reviews with meta-analyses that focused on the comparison of platform-switching (implant-abutment mismatching) and platform-matched (PM) implants. The assessment of multiple systematic reviews (AMSTAR) and Glenny (Checklist) Scales were used to qualify the studies. PubMed, Scientific Electronic Library Online (SciELO), Web of Science (formerly ISI Web of Knowledge), and Cochrane databases were searched, by topic, for systematic reviews on dental implants with switching platforms. A total of 8 systematic reviews, including 7 studies with meta-analyses, were selected. The AMSTAR scale indicated a high (n = 6) to moderate (n = 2) score for the included studies. The quantitative analysis indicated that platform-switching implants preserved more bone tissue when compared with platform-matched implants (6 meta-analyses; P < .001, smaller mean difference: −0.29 mm, 95% CI: −0.38, −0.19 and greater mean difference: −0.49 mm, 95% CI: −0.73, −0.26). Quantitative analysis based on 7 systematic reviews with meta-analysis indicated positive peri-implant bone preservation for implants restored with an implant-abutment mismatching (PSW). Further, there is evidence to improve the design of current systematic reviews. Future systematic reviews in this thematic area should consider searches in gray literature and different databases and include only randomized controlled clinical studies.

scholarly journals Does the platform switching implant affect the crestal bone level? A systematic review and meta-analysis

2019 ◽  
Vol 4 (1) ◽  
pp. 20-29
Author(s):  
Asma M. Serag Eldien ◽  
◽  
Enji Ahmed Mahmoud ◽  
Huda Hamed ◽  
Mona Ali Shoeib ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Bone Level ◽  
Platform Switching

scholarly journals Five Degree Internal Conical Connection and Marginal Bone Stability around Subcrestal Implants: A Retrospective Analysis

Materials ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3123
Author(s):  
Diego Lops ◽  
Michele Stocchero ◽  
Jason Motta Jones ◽  
Alessandro Freni ◽  
Antonino Palazzolo ◽  
...  
Keyword(s):  
Clinical Evidence ◽  
Multiple Regression Model ◽  
Vertical Position ◽  
Limited Information ◽  
Conical Connection ◽  
Bone Level ◽  
Platform Switching ◽  
Marginal Bone Level

Background: There is limited information on the effect of the connection between subcrestally placed implants and abutments on marginal bone levels. The aim of the present retrospective study was to evaluate marginal bone levels after definitive prosthesis delivery around implants with an internal 5° conical connection placed in a subcrestal position. Materials and methods: Patients treated with fixed prostheses supported by implants placed at a subcrestal level between 2012 and 2018 were recalled for a follow-up examination. All implants had 5° internal conical connection with platform switching. Radiographic marginal bone level (MBL) was measured. MBL change between prosthetic delivery (t0) and follow-up examination (t1) was calculated. A multiple regression model was performed to identify the most significant predictors on MBL change. Results: Ninety-three patients and 410 implants, with a mean follow-up of 2.72 ± 1.31 years, were examined. Mean MBL was −1.09 ± 0.65 mm and −1.00 ± 0.37 mm at t0 and t1, respectively, with a mean bone remodeling of 0.09 ± 0.68 mm. An implant’s vertical position in relation to the bone crest, the year of follow up and the presence of type-2 controlled diabetes were demonstrated to be influencing factors for MBL modifications. Conclusions: Subcrestally placed implants with platform switching and internal conical connection maintained stable bone levels over a mean follow-up of more than 2 years. How a tight internal conical connection between abutment and implant may contribute to this clinical evidence should be more deeply investigated. MBL variations seem to be mostly influenced by an implant’s vertical position and presence of type-2 controlled diabetes.

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