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Gerry M Raghoebar - One of the best experts on this subject based on the ideXlab platform.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:Objective To assess the performance of short nanorough implants (8.5 mm in length) provided with either a platform-matched or a platform-switched implant–abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and Methods A total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant–abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1 month and 1 year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. Results One year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P = 0.33). Radiographic bone loss around test implants (0.50 ± 0.53 mm) was significantly less than around control implants (0.74 ± 0.61 mm; P < 0.005). With regard to implant survival, clinical parameters, and patient's satisfaction, no significant differences were observed between test and control group. Conclusions For teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant–abutment Connection showed significantly less peri-implant bone loss after 1 year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant–abutment Connection Design.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:ObjectiveTo assess the performance of short nanorough implants (8.5mm in length) provided with either a platform-matched or a platform-switched implant-abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and MethodsA total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant-abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1month and 1year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. ResultsOne year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P=0.33). Radiographic bone loss around test implants (0.500.53mm) was significantly less than around control implants (0.74 +/- 0.61mm; P ConclusionsFor teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant-abutment Connection showed significantly less peri-implant bone loss after 1year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant-abutment Connection Design.
Gerdien Telleman - One of the best experts on this subject based on the ideXlab platform.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:Objective To assess the performance of short nanorough implants (8.5 mm in length) provided with either a platform-matched or a platform-switched implant–abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and Methods A total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant–abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1 month and 1 year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. Results One year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P = 0.33). Radiographic bone loss around test implants (0.50 ± 0.53 mm) was significantly less than around control implants (0.74 ± 0.61 mm; P < 0.005). With regard to implant survival, clinical parameters, and patient's satisfaction, no significant differences were observed between test and control group. Conclusions For teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant–abutment Connection showed significantly less peri-implant bone loss after 1 year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant–abutment Connection Design.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:ObjectiveTo assess the performance of short nanorough implants (8.5mm in length) provided with either a platform-matched or a platform-switched implant-abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and MethodsA total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant-abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1month and 1year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. ResultsOne year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P=0.33). Radiographic bone loss around test implants (0.500.53mm) was significantly less than around control implants (0.74 +/- 0.61mm; P ConclusionsFor teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant-abutment Connection showed significantly less peri-implant bone loss after 1year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant-abutment Connection Design.
Arjan Vissink - One of the best experts on this subject based on the ideXlab platform.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:Objective To assess the performance of short nanorough implants (8.5 mm in length) provided with either a platform-matched or a platform-switched implant–abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and Methods A total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant–abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1 month and 1 year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. Results One year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P = 0.33). Radiographic bone loss around test implants (0.50 ± 0.53 mm) was significantly less than around control implants (0.74 ± 0.61 mm; P < 0.005). With regard to implant survival, clinical parameters, and patient's satisfaction, no significant differences were observed between test and control group. Conclusions For teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant–abutment Connection showed significantly less peri-implant bone loss after 1 year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant–abutment Connection Design.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:ObjectiveTo assess the performance of short nanorough implants (8.5mm in length) provided with either a platform-matched or a platform-switched implant-abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and MethodsA total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant-abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1month and 1year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. ResultsOne year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P=0.33). Radiographic bone loss around test implants (0.500.53mm) was significantly less than around control implants (0.74 +/- 0.61mm; P ConclusionsFor teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant-abutment Connection showed significantly less peri-implant bone loss after 1year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant-abutment Connection Design.
Hendrikus Meijer - One of the best experts on this subject based on the ideXlab platform.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:Objective To assess the performance of short nanorough implants (8.5 mm in length) provided with either a platform-matched or a platform-switched implant–abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and Methods A total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant–abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1 month and 1 year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. Results One year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P = 0.33). Radiographic bone loss around test implants (0.50 ± 0.53 mm) was significantly less than around control implants (0.74 ± 0.61 mm; P < 0.005). With regard to implant survival, clinical parameters, and patient's satisfaction, no significant differences were observed between test and control group. Conclusions For teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant–abutment Connection showed significantly less peri-implant bone loss after 1 year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant–abutment Connection Design.
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short implants with a nanometer sized cap surface provided with either a platform switched or platform matched abutment Connection in the posterior region a randomized clinical trial
Clinical Oral Implants Research, 2013Co-Authors: Gerdien Telleman, Hendrikus Meijer, Arjan Vissink, Gerry M RaghoebarAbstract:ObjectiveTo assess the performance of short nanorough implants (8.5mm in length) provided with either a platform-matched or a platform-switched implant-abutment Connection, placed in the resorbed posterior region of partially dentate patients. Materials and MethodsA total of 149 implants with a dual-acid surface and a discrete crystalline deposition of nanometer-sized CaP particles, with either a platform-matched (control) or a platform-switched implant-abutment Connection (test) were placed (randomly assigned) in 92 patients. Follow-up visits were conducted 1month and 1year after placing the implant crown. Outcome measures were implant survival, radiographic peri-implant bone loss, clinical parameters, and patient's satisfaction. ResultsOne year after loading, 6 of 76 implants in the control group (survival 92.1%) and 3 of 73 implants in the test group (survival 95.9%) were lost (P=0.33). Radiographic bone loss around test implants (0.500.53mm) was significantly less than around control implants (0.74 +/- 0.61mm; P ConclusionsFor teeth replacements in the resorbed posterior region of partially dentate patients, short implants with a platform-switched implant-abutment Connection showed significantly less peri-implant bone loss after 1year in function, while implant survival, clinical parameters, and patient's satisfaction were independent of the implant-abutment Connection Design.
Paulo G Coelho - One of the best experts on this subject based on the ideXlab platform.
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fatigue failure of narrow implants with different implant abutment Connection Designs
Journal of Prosthodontics, 2018Co-Authors: Estevam A Bonfante, Dimorvan Bordin, Lukasz Witek, Vinicius P Fardin, Paulo G CoelhoAbstract:Purpose To evaluate the reliability of narrow diameter dental implants (NDIs) with similar macrogeometry and 3 implant-abutment Connection Designs. Materials and Methods Eighty-four NDIs (3.5 × 10 mm) were selected and divided into 4 groups (n = 21/group) according to implant-abutment Connection Design, as follows: EH – external hexagon, IH – internal hexagon, IC – internal conical, and IC-M – internal conical connected to a monolithic titanium abutment. Identical abutments were torqued to the implants, and standardized maxillary incisor crowns were cemented and subjected to step-stress accelerated life testing (SSALT) in water. Use of level probability Weibull curves, and reliability for a mission of 50,000 cycles at 75 N and 200 N were calculated. Results The beta (β) values were: 1.48 for IC, 1.40 for IC-M, 8.54 for EH, and 1.98 for IH, indicating that damage accumulation was an acceleration factor for failure of all groups. At 75 N the probability of survival was not significantly different between groups. A decrease in reliability was observed for all groups at 200 N with no significant differences between IC (81.71%) and IC-M (94.28%), or between EH and IH (0%) which presented the lowest values. EH failures were primarily restricted to the screw, while IH involved screw and implant fracture. IC and IC-M were restricted to prosthetic failures (fracture and bending). Conclusions Narrow implants with external or internal hexagon Connections presented the lowest reliability at high loads compared to internal conical Connections. Failure modes differed among Connections.
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effect of implant abutment Connection Design on reliability of crowns regular vs horizontal mismatched platform
Clinical Oral Implants Research, 2012Co-Authors: Amilcar Chagas Freitas, Estevam A Bonfante, Nelson R F A Silva, Leonard Marotta, Paulo G CoelhoAbstract:Objectives: To evaluate the reliability and failure modes of regular and horizontal mismatched platforms for implant–abutment Connection varying the implant diameter. Material and methods: Regular (REG, n = 21, 4.0-mm-diameter implant) and horizontal mismatched (HM, n = 21, 4.6-mm-diameter implant) platform Ti-6Al-4V implants were restored with proprietary identical Ti-6Al-4V abutments and metal crowns (cobalt-chrome, Wirobond ® 280, BEGO, Bremen, Germany) cemented. Mechanical testing comprised step-stress accelerated-life testing, where crowns were distributed in three loading profiles for fatigue in water, producing timely and clinically relevant fractures. The probability of failure vs. cycles (95% two-sided confidence intervals) was calculated and plotted using a powerlaw relationship for damage accumulation, Weibull modulus (95% two-sided confidence intervals) and then the reliability for a mission of 50,000 cycles at 125 N load (95% two-sided confidence interval) were calculated. Fractography was performed in the scanning electron microscope. Results: The b-value for group REG (b = 1.37) indicated that fatigue was a factor accelerating the failure, whereas load alone dictated the failure for group HM (b = 0.71). The Weibull parameter contour plot showed no significantly different Weibull modulus for REG (10.24) compared to HM (10.20) and characteristic strength of 162.6 and 166.8 N, respectively (P > 0.91). The calculated reliability for a mission of 50,000 cycles at 125 N load was not significantly different (0.71 for REG and 0.73 for HM). Abutment screw failure was the chief failure mode. Conclusions: Reliability was not significantly different between groups and failure modes were similar.
