The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Ignace Naert - One of the best experts on this subject based on the ideXlab platform.
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Impact of implant number, distribution and Prosthesis Material on loading on implants supporting fixed prostheses
Journal of oral rehabilitation, 2010Co-Authors: Toru Ogawa, S Dhaliwal, Ignace Naert, Atsushi Mine, M Kronstrom, Keiichi Sasaki, Joke DuyckAbstract:The purpose of this study is to evaluate axial forces and bending moments (BMs) on implants supporting a complete arch fixed implant supported Prosthesis with respect to number and distribution of the implants and type of Prosthesis Material. Seven oral Branemark implants with a diameter of 3.75 mm and a length of 13 and 7 mm (short distal implant) were placed in an edentulous composite mandible used as the experimental model. One all-acrylic, one fibre-reinforced acrylic, and one milled titanium framework Prosthesis were made. A 50 N vertical load was applied on the extension 10 mm distal from the most posterior implant. Axial forces and BMs were measured by calculating signals from three strain gauges attached to each of the abutments. The load was measured using three different models with varying numbers of supporting implants (3, 4 and 5), three models with different implant distribution conditions (small, medium and large) and three models with different Prosthesis Materials (titanium, acrylic and fibre-reinforced acrylic). Maximum BMs were highest when prostheses were supported by three implants compared to four and five implants (P < 0.001). The BMs were significantly influenced by the implant distribution, in that the smallest distribution induced the highest BMs (P < 0.001). Maximum BMs were lowest with the titanium Prosthesis (P < 0.01). The resultant forces on implants were significantly associated with the implant number and distribution and the Prosthesis Material.
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influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis in vivo study
Clinical Implant Dentistry and Related Research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Background: Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. Purpose: The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Methods: Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. Results: A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. Conclusion: The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
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Influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis: in vivo study.
Clinical implant dentistry and related research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
Joke Duyck - One of the best experts on this subject based on the ideXlab platform.
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Impact of implant number, distribution and Prosthesis Material on loading on implants supporting fixed prostheses
Journal of oral rehabilitation, 2010Co-Authors: Toru Ogawa, S Dhaliwal, Ignace Naert, Atsushi Mine, M Kronstrom, Keiichi Sasaki, Joke DuyckAbstract:The purpose of this study is to evaluate axial forces and bending moments (BMs) on implants supporting a complete arch fixed implant supported Prosthesis with respect to number and distribution of the implants and type of Prosthesis Material. Seven oral Branemark implants with a diameter of 3.75 mm and a length of 13 and 7 mm (short distal implant) were placed in an edentulous composite mandible used as the experimental model. One all-acrylic, one fibre-reinforced acrylic, and one milled titanium framework Prosthesis were made. A 50 N vertical load was applied on the extension 10 mm distal from the most posterior implant. Axial forces and BMs were measured by calculating signals from three strain gauges attached to each of the abutments. The load was measured using three different models with varying numbers of supporting implants (3, 4 and 5), three models with different implant distribution conditions (small, medium and large) and three models with different Prosthesis Materials (titanium, acrylic and fibre-reinforced acrylic). Maximum BMs were highest when prostheses were supported by three implants compared to four and five implants (P < 0.001). The BMs were significantly influenced by the implant distribution, in that the smallest distribution induced the highest BMs (P < 0.001). Maximum BMs were lowest with the titanium Prosthesis (P < 0.01). The resultant forces on implants were significantly associated with the implant number and distribution and the Prosthesis Material.
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influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis in vivo study
Clinical Implant Dentistry and Related Research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Background: Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. Purpose: The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Methods: Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. Results: A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. Conclusion: The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
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Influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis: in vivo study.
Clinical implant dentistry and related research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
Alexandra Tsigarida - One of the best experts on this subject based on the ideXlab platform.
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Implant and Peri-implant Tissue Maintenance: Protocols to Prevent Peri-implantitis
Current Oral Health Reports, 2020Co-Authors: Sophie Bernard, Elli Anna Kotsailidi, Konstantinos Chochlidakis, Carlo Ercoli, Alexandra TsigaridaAbstract:Purpose of Review In the absence of prevention protocols, early diagnosis and predictable treatment options for peri-implant diseases, the long-term survival of dental implants may be compromised. The purpose of the present review is to outline risk factors/indicators for peri-implantitis and propose current protocols (2015–present) for their control and disease prevention. Recent Findings Recent evidence suggests that factors including use of proton-pump and selective serotonin-reuptake inhibitors, titanium-particle release, disruption of the implant-abutment connection, and Prosthesis Material/dimensions may increase peri-implantitis prevalence. Although the literature is still scarce, identifying these factors and developing appropriate maintenance protocols is imperative to prevent disease development. Summary Peri-implantitis can be influenced by several risk factors/indicators that can be classified as patient related, clinical, and/or implant related. To facilitate the individualized patient risk profile assessment and guide clinical decisions, this review describes the impact of identified risk factors/indicators on peri-implant health and proposes preventive protocols based on the latest evidence.
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Implant and Peri-implant Tissue Maintenance: Protocols to Prevent Peri-implantitis
Current Oral Health Reports, 2020Co-Authors: Sophie Bernard, Elli Anna Kotsailidi, Konstantinos Chochlidakis, Carlo Ercoli, Alexandra TsigaridaAbstract:In the absence of prevention protocols, early diagnosis and predictable treatment options for peri-implant diseases, the long-term survival of dental implants may be compromised. The purpose of the present review is to outline risk factors/indicators for peri-implantitis and propose current protocols (2015–present) for their control and disease prevention. Recent evidence suggests that factors including use of proton-pump and selective serotonin-reuptake inhibitors, titanium-particle release, disruption of the implant-abutment connection, and Prosthesis Material/dimensions may increase peri-implantitis prevalence. Although the literature is still scarce, identifying these factors and developing appropriate maintenance protocols is imperative to prevent disease development. Peri-implantitis can be influenced by several risk factors/indicators that can be classified as patient related, clinical, and/or implant related. To facilitate the individualized patient risk profile assessment and guide clinical decisions, this review describes the impact of identified risk factors/indicators on peri-implant health and proposes preventive protocols based on the latest evidence.
Barrie Vernon-roberts - One of the best experts on this subject based on the ideXlab platform.
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The biologic response to particles from a potential disc Prosthesis Material.
Spine, 2008Co-Authors: Yoshio Shimamura, C.a. Holding, David R. Haynes, Barrie Vernon-roberts, Peter C. Blumbergs, Robert D. Fraser, Robert J. MooreAbstract:An in vivo study of Material from a potential disc Prosthesis. To examine the histopathologic effect of particulate debris on the dura and neural tissue in sheep. Disc prostheses are emerging as alternatives to spinal fusion for the treatment of symptomatic degenerative lumbar disc disease. Preclinical biocompatibility trials must be conducted before any device is considered for general use. Artificially generated wear particles of a Material known as Sinux (DePuy Spine, Raynham, MA) were implanted directly onto the lumbosacral dura and nerve roots of 18 sheep that were randomly allocated to 3 groups to survive between 1 and 6 months. Tissue sections from T12 to the sacrum were examined for histopathological evidence of inflammation and wound healing in response to the particles and for the effects on the neural elements. There was no significant evidence of inflammation, macrophage accumulation, or other tissue response. Other observations included some minor tissue pigmentation due to microhemorrhage, occasional but minimal lymphocyte infiltration, and crystalline Sinux in the fibroadipose connective tissue external to the dura. Artificially generated particles of Sinux placed directly onto the dura and nerve roots did not induce any significant biologic response in a sheep model.
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The synovial response to intraarticular injection in rats of polyethylene wear particles
Clinical orthopaedics and related research, 1993Co-Authors: Donald W. Howie, Beverley A. Manthey, Hay S, Barrie Vernon-robertsAbstract:To study the effect on tissues of wear particles commonly released from the articulating surfaces of joint prostheses, ultra-high-molecular-weight polyethylene particles were prepared in a joint simulator and injected into rat knees. The particles caused synovial proliferation and induced a macrophage and multinucleate giant-cell response in the subsynovium. Of particular interest was the macrophage response to particles ranging from 5 microns in maximum dimension to the limits of resolution of the light microscope; the multinucleate giant-cell response occurred in response to larger particles and aggregates of small particles. These findings emphasize the importance of wear particles in causing an adverse tissue response around joint replacements having a polyethylene component. The difference in cellular response to wear particles of different size suggests that not only the Prosthesis Material but also the pattern of wear and size of wear particles produced at the articulating surfaces of a Prosthesis will determine the type of cellular response.
Hans Van Oostenvyck - One of the best experts on this subject based on the ideXlab platform.
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influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis in vivo study
Clinical Implant Dentistry and Related Research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Background: Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. Purpose: The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Methods: Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. Results: A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. Conclusion: The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
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Influence of Prosthesis Material on the loading of implants that support a fixed partial Prosthesis: in vivo study.
Clinical implant dentistry and related research, 2000Co-Authors: Joke Duyck, Hans Van Oostenvyck, Jos Vander Sloten, Michel De Cooman, Robert Puers, Ignace NaertAbstract:Since loading is increasingly believed to be a determining factor in the treatment outcome with oral implants, there is a need to expand the knowledge related to the biomechanics of oral implants and its influencing factors. The aim of this study was to investigate the influence of Prosthesis Material on the distribution and magnitude of load on oral implants carrying a fixed partial Prosthesis by in vivo quantification and qualification of this load. Eight patients with in total nine three-unit fixed partial prostheses on three implants and three patients with in total four two-unit fixed partial prostheses on two implants were selected. Both metal and acrylic resin prostheses were made. Strain gauged abutments were used to measure the load on the supporting implants during controlled load application of 50 N on several positions along the occlusal surface of the prostheses and during maximal biting in maximal occlusion. Additional tests were conducted when the three-unit prostheses were supported only by two implants, thereby creating an extension pontic. A significantly better distribution of bending moments with the metal prostheses in comparison to the acrylic resin prostheses was observed in the case of the three-unit prostheses on two implants. No other difference in load or load distribution with the different Prosthesis Materials was noted. The clinical significance of the study reveals an increased risk for bending overload of the implants that are closest to the point of load application only in the case of acrylic resin long span prostheses or acrylic resin prostheses with extensions.
