Context: Marginal bone loss around implants still is difficult to avoid and the great influence of the size of the implant/abutment micro-gap on crestal bone level maintenance have been reported in the literature. The internal conical Morse taper connection has been demonstrated to be an effective system for minimizing inflammatory reactions and maximizing peri-implant bone stability. Aims: The primary aim of this study was to evaluate the marginal bone change around dental implants with a platform-switched (PS) Morse taper connection and a medium rough surface over a 4-year follow-up period. Settings and Design: The data for this study were obtained from the clinical records of a private periodontal practice exclusively in Periodontics and Implantology (Vicenza, Italy), treated by one EFP certified periodontist (C.S). The same operator (C.S) performed all the surgeries. Subjects and Methods: Marginal bone loss around PS Morse taper connection implants was retrospectively analysed on standardized radiographs after 1 year and 4 years from the prosthesis connection. Statistical Analysis Used: The statistical unit of observation was the single implant. The influence on MBC of the number of implants for the same patient was tested using the Kruskal Wallis non parametric test. The main effects of the follow-up times (T1 and T4) and of each individual factor on MBC were evaluated using the non-parametric Wilcoxon and Mann-Whitney tests respectively. The interaction effect between follow-up time and each individual factor was graphically tested considering the MBC median values in the time level for each factor. Statistical significance was taken at the ≤0.05 level (two-sided). All analyses were performed using the STATA/IC for Windows, version 14.2. Results: Ninety implants were examined in fifty patients. Mean bone change was −0.06 ± 0.31 mm after 1 year and −0.2 ± 0.45 mm after 4 years. The cumulative survival rate at 4 years was 100%, and a low prevalence of implants with clinical signs of mucositis (12.2%) or peri-implantitis (1.1%) was reported. Conclusions: In implants where the prosthesis is correctly place and the patient are compliers to their maintenance therapy, the contemporary presence of a Morse taper connection and a switching platform seems to offer good results for the maintenance of peri-implant bone in the short and medium term.
背景:种植体周围边缘骨丢失仍然难以避免，文献报道种植体/基牙微间隙的大小对牙冠骨水平维持有很大影响。内部锥形莫尔斯锥连接已被证明是一个有效的系统，以减少炎症反应和最大限度地提高种植体周围的骨稳定性。目的:本研究的主要目的是在4年的随访期间评估平台切换(PS)莫尔斯锥度连接和中等粗糙表面的种植体周围的边缘骨变化。设置和设计:本研究的数据来自意大利维琴察牙周病和种植科的一家私人牙周诊所的临床记录，由一名EFP认证的牙周病医生(C.S)治疗。所有的手术都是由同一位外科医生进行的。对象和方法:回顾性分析PS莫尔斯锥形连接种植体周围1年和4年的标准化x线片骨质流失情况。统计分析方法:观察的统计单位为单颗种植体。采用Kruskal - Wallis非参数检验检测同一患者种植体数量对MBC的影响。采用非参数Wilcoxon和Mann-Whitney检验分别评价随访时间(T1和T4)和各个体因素对MBC的主要影响。考虑各因素在时间水平上的MBC中位数，用图形检验随访时间与各个体因素的交互作用效应。在≤0.05水平(双侧)有统计学意义。所有分析均使用STATA/IC for Windows, version 14.2进行。结果:50例患者共检查种植体90枚。平均骨变化1年后为- 0.06±0.31 mm, 4年后为- 0.2±0.45 mm。4年的累积生存率为100%，有黏膜炎(12.2%)或种植体周围炎(1.1%)临床症状的种植体的发生率较低。结论:在假体放置正确且患者遵守其维持治疗的种植体中，摩斯锥度连接和切换平台的存在似乎在短期和中期对种植体周围骨的维持提供了良好的效果。
{"title":"Marginal bone change, survival and biological complications around dental implants with a platform switched, Morse taper connection, and a medium rough surface in a sample of regular compliers patients","authors":"M. Soldini, Filippo Trentin, Ramon Calabuig","doi":"10.4103/jdi.jdi_29_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_29_21","url":null,"abstract":"Context: Marginal bone loss around implants still is difficult to avoid and the great influence of the size of the implant/abutment micro-gap on crestal bone level maintenance have been reported in the literature. The internal conical Morse taper connection has been demonstrated to be an effective system for minimizing inflammatory reactions and maximizing peri-implant bone stability. Aims: The primary aim of this study was to evaluate the marginal bone change around dental implants with a platform-switched (PS) Morse taper connection and a medium rough surface over a 4-year follow-up period. Settings and Design: The data for this study were obtained from the clinical records of a private periodontal practice exclusively in Periodontics and Implantology (Vicenza, Italy), treated by one EFP certified periodontist (C.S). The same operator (C.S) performed all the surgeries. Subjects and Methods: Marginal bone loss around PS Morse taper connection implants was retrospectively analysed on standardized radiographs after 1 year and 4 years from the prosthesis connection. Statistical Analysis Used: The statistical unit of observation was the single implant. The influence on MBC of the number of implants for the same patient was tested using the Kruskal Wallis non parametric test. The main effects of the follow-up times (T1 and T4) and of each individual factor on MBC were evaluated using the non-parametric Wilcoxon and Mann-Whitney tests respectively. The interaction effect between follow-up time and each individual factor was graphically tested considering the MBC median values in the time level for each factor. Statistical significance was taken at the ≤0.05 level (two-sided). All analyses were performed using the STATA/IC for Windows, version 14.2. Results: Ninety implants were examined in fifty patients. Mean bone change was −0.06 ± 0.31 mm after 1 year and −0.2 ± 0.45 mm after 4 years. The cumulative survival rate at 4 years was 100%, and a low prevalence of implants with clinical signs of mucositis (12.2%) or peri-implantitis (1.1%) was reported. Conclusions: In implants where the prosthesis is correctly place and the patient are compliers to their maintenance therapy, the contemporary presence of a Morse taper connection and a switching platform seems to offer good results for the maintenance of peri-implant bone in the short and medium term.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126403530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. R. Roy Chowdhury, R. Shadamarshan, R. Krishnaprabhu
Context: Implant-retained prosthodontic rehabilitation of the posterior maxilla is challenging owing to the compromised characteristics of the residual alveolar bone which might require several adjunctive surgical procedures to augment the available alveolar bone. Aims: This study aims to evaluate the outcome of rehabilitated maxillary posterior edentulous space with lateral disc implants in subjects with inadequate bone height. Subject and Methods: Forty patients with edentulous span in posterior maxilla with inadequate volume of bone were rehabilitated with lateral disc implant-retained prosthesis. Follow-up was undertaken at the end of 06, 12, 24, and 36 months by allocating the implants into the groups assessed according to the Misch Implant quality scale. A total of 6 Single disc, 22 Double disc, and 12 triple disc implants were placed. Statistical Analysis Used: Descriptive statistics. Results: At the end of 06 months, 96.6% were in Group 1, 3.3% were assessed to be in Group 2. At 12 months, 95% were in Group 1, 1.6% in Group 2, and 3.3% in Group 3. At 24 months, 95% were in Group 1, 3.3% were in Group 2, and 1.6% were in Group 3. At 36 months, 96.6% were assessed in Group 1 while 1.6% each was in Group 2 and 4. Conclusions: A clinical success of 98.4% has been established and is concluded that Lateral disc implants provide a viable alternative to the contemporary management protocol involving a sinus lift.
{"title":"Rehabilitation of edentulous posterior maxilla using lateral disc implants avoiding ridge augmentation in cases with inadequate bone height: A clinical evaluation","authors":"S. R. Roy Chowdhury, R. Shadamarshan, R. Krishnaprabhu","doi":"10.4103/jdi.jdi_19_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_19_21","url":null,"abstract":"Context: Implant-retained prosthodontic rehabilitation of the posterior maxilla is challenging owing to the compromised characteristics of the residual alveolar bone which might require several adjunctive surgical procedures to augment the available alveolar bone. Aims: This study aims to evaluate the outcome of rehabilitated maxillary posterior edentulous space with lateral disc implants in subjects with inadequate bone height. Subject and Methods: Forty patients with edentulous span in posterior maxilla with inadequate volume of bone were rehabilitated with lateral disc implant-retained prosthesis. Follow-up was undertaken at the end of 06, 12, 24, and 36 months by allocating the implants into the groups assessed according to the Misch Implant quality scale. A total of 6 Single disc, 22 Double disc, and 12 triple disc implants were placed. Statistical Analysis Used: Descriptive statistics. Results: At the end of 06 months, 96.6% were in Group 1, 3.3% were assessed to be in Group 2. At 12 months, 95% were in Group 1, 1.6% in Group 2, and 3.3% in Group 3. At 24 months, 95% were in Group 1, 3.3% were in Group 2, and 1.6% were in Group 3. At 36 months, 96.6% were assessed in Group 1 while 1.6% each was in Group 2 and 4. Conclusions: A clinical success of 98.4% has been established and is concluded that Lateral disc implants provide a viable alternative to the contemporary management protocol involving a sinus lift.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131641634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the past few years, the prosthodontic educational and research focus evolved beyond traditional therapeutic approaches. This progress resulted from three major initiatives. First, materials research has simplified impression-making protocol and denture relining technique. Second, improved understanding of the role and particularly the limitations of mechanical analogs for the masticatory system (i.e., articulators). The third initiative, and the major research and educational catalyst, has been the technique of osseointegration, which has had a profound impact on research and education in virtually all our clinical endeavors. As a result, the consequences of an aging edentulous environment or a terminal dentition have been more successfully addressed than ever before and many clinicians even began to forecast the demise of the complete denture technique. Thankfully though, the initial euphoria resulting from the availability of implant-supported solutions has now ablated, and a more realistic assessment has emerged. In this article, emphasis more on correlation of senile osteoporosis and role of Vitamin D in relation to the success of oral implantology.
{"title":"Co-relation of Vitamin D and senile osteoporosis in relation to dental implant","authors":"R. Raheja","doi":"10.4103/jdi.jdi_18_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_18_21","url":null,"abstract":"In the past few years, the prosthodontic educational and research focus evolved beyond traditional therapeutic approaches. This progress resulted from three major initiatives. First, materials research has simplified impression-making protocol and denture relining technique. Second, improved understanding of the role and particularly the limitations of mechanical analogs for the masticatory system (i.e., articulators). The third initiative, and the major research and educational catalyst, has been the technique of osseointegration, which has had a profound impact on research and education in virtually all our clinical endeavors. As a result, the consequences of an aging edentulous environment or a terminal dentition have been more successfully addressed than ever before and many clinicians even began to forecast the demise of the complete denture technique. Thankfully though, the initial euphoria resulting from the availability of implant-supported solutions has now ablated, and a more realistic assessment has emerged. In this article, emphasis more on correlation of senile osteoporosis and role of Vitamin D in relation to the success of oral implantology.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122705945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prema Sukumaran, Dionetta Dionysius, W. Ngeow, C. Tan, Mohd Hussin
Dental implants require healthy bone for successful osseointegration. However, bone health can become compromised by ageing and/or the presence of underlying medical conditions. The severity and complications associated with these medical conditions usually indicate that they require medication for successful management. Some of these medications may undoubtedly exert effects on bone through direct or indirect mechanisms and therefore, may also affect osseointegration. These include antihypertensives, oral hypoglycaemic agents (OHAs)/insulin, hormones (corticosteroid, thyroxin and tamoxifen) and anti-resorptive agents including bisphosphonates and anti-angiogenic agents. Part One of this paper reviews the current knowledge regarding the effects of antihypertensives, OHAs and insulin on the outcome of implant therapy.
{"title":"Systemic medications and implant success: Is there a link? part one: The effects of antihypertensives, oral hypoglycaemic agents and insulin on the outcome of implant therapy","authors":"Prema Sukumaran, Dionetta Dionysius, W. Ngeow, C. Tan, Mohd Hussin","doi":"10.4103/jdi.jdi_22_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_22_21","url":null,"abstract":"Dental implants require healthy bone for successful osseointegration. However, bone health can become compromised by ageing and/or the presence of underlying medical conditions. The severity and complications associated with these medical conditions usually indicate that they require medication for successful management. Some of these medications may undoubtedly exert effects on bone through direct or indirect mechanisms and therefore, may also affect osseointegration. These include antihypertensives, oral hypoglycaemic agents (OHAs)/insulin, hormones (corticosteroid, thyroxin and tamoxifen) and anti-resorptive agents including bisphosphonates and anti-angiogenic agents. Part One of this paper reviews the current knowledge regarding the effects of antihypertensives, OHAs and insulin on the outcome of implant therapy.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123151931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The use of dental implants to treat edentulous maxilla and mandible is a well-accepted concept in modern dentistry. However, it is difficult and challenging in atrophic jaws. All-on-four implant concept is an alternative for resorbed jaws, as it obviates extensive bone grafting and waiting time and often provides immediate function. In our article, we describe the use of narrow platform implants (3.3 mm) for a moderate atrophic complete edentulous case with the above concept. The studies with narrow-diameter implants for complete reconstruction are inadequately reported. We followed our case for 3 years after the delivery of final prosthesis.
{"title":"All-on-four treatment with narrow platform implants in reduced restorative space for moderate atrophic edentulous ridge","authors":"Farhan Durrani, Aishwarya Pandey, Preeti Singh, Samidha Pandey, Rakhshinda Nahid","doi":"10.4103/jdi.jdi_25_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_25_21","url":null,"abstract":"The use of dental implants to treat edentulous maxilla and mandible is a well-accepted concept in modern dentistry. However, it is difficult and challenging in atrophic jaws. All-on-four implant concept is an alternative for resorbed jaws, as it obviates extensive bone grafting and waiting time and often provides immediate function. In our article, we describe the use of narrow platform implants (3.3 mm) for a moderate atrophic complete edentulous case with the above concept. The studies with narrow-diameter implants for complete reconstruction are inadequately reported. We followed our case for 3 years after the delivery of final prosthesis.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127498667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Prema Sukumaran, Dionetta Dionysius, W. Ngeow, C. Tan, Mohd Hussin
Dental implants require healthy bone for successful osseointegration. However, bone health can become compromised by aging and/or the presence of underlying medical conditions. The severity and complications associated with these medical conditions usually indicate that they require medication for successful management. Some of these medications may undoubtedly exert effects on bone through direct or indirect mechanisms and, therefore, may also affect osseointegration. These include antihypertensive drugs, oral hypoglycemic agents/insulin, hormones (corticosteroid, thyroxin, and tamoxifen), and anti-resorptive agents including bisphosphonates and anti-angiogenic agents. Part two of this paper reviews the current knowledge regarding the effects of corticosteroids, thyroxin, and tamoxifen on the outcome of implant therapy.
{"title":"Systemic medications and implant success: Is there a link? Part two: The effects of therapeutic hormones on the outcome of implant therapy","authors":"Prema Sukumaran, Dionetta Dionysius, W. Ngeow, C. Tan, Mohd Hussin","doi":"10.4103/jdi.jdi_23_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_23_21","url":null,"abstract":"Dental implants require healthy bone for successful osseointegration. However, bone health can become compromised by aging and/or the presence of underlying medical conditions. The severity and complications associated with these medical conditions usually indicate that they require medication for successful management. Some of these medications may undoubtedly exert effects on bone through direct or indirect mechanisms and, therefore, may also affect osseointegration. These include antihypertensive drugs, oral hypoglycemic agents/insulin, hormones (corticosteroid, thyroxin, and tamoxifen), and anti-resorptive agents including bisphosphonates and anti-angiogenic agents. Part two of this paper reviews the current knowledge regarding the effects of corticosteroids, thyroxin, and tamoxifen on the outcome of implant therapy.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123695617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Roshan P. Thumati, Prafulla Thumati, Srikar Comandur
Surgical guides (SGs) have been commonly used in full-mouth rehabilitation and numerous advances have been adopted in their development. However, they have been restricted to implant placement and are later rendered useless. They further add to the burden of biological waste management following their limited use. The quantum of technologies and materials used to make us ponder if they can be used further. This article establishes different ways of using SG in different stages of prosthetic phase of treatment by demonstrating the procedures clinically. It gives us an insight into how the guides can be used for implant localization and exposure during the secondary surgical phase and also during impression making, thereby enhancing the treatment outcome.
{"title":"Novel alternative use of surgical guides in full-mouth implant rehabilitation cases: A case series","authors":"Roshan P. Thumati, Prafulla Thumati, Srikar Comandur","doi":"10.4103/jdi.jdi_1_22","DOIUrl":"https://doi.org/10.4103/jdi.jdi_1_22","url":null,"abstract":"Surgical guides (SGs) have been commonly used in full-mouth rehabilitation and numerous advances have been adopted in their development. However, they have been restricted to implant placement and are later rendered useless. They further add to the burden of biological waste management following their limited use. The quantum of technologies and materials used to make us ponder if they can be used further. This article establishes different ways of using SG in different stages of prosthetic phase of treatment by demonstrating the procedures clinically. It gives us an insight into how the guides can be used for implant localization and exposure during the secondary surgical phase and also during impression making, thereby enhancing the treatment outcome.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121916812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
As the practice of dental implantology keeps growing exponentially worldwide, implantologists face an ever-increasing challenge to manage peri-implant diseases and complications. At present, the approaches to diagnose, classify, and treat peri-implant diseases are not uniform, standardized, or systematic. To address these limitations, a classification for peri-implant diseases and conditions was presented in the Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions in 2017 organized by the American Academy of Periodontology and European Federation of Periodontology. Since its inception in 2017, this comprehensive classification system has become the new standard of clinical practice around the world. The article provides an overview and description of peri-implant diseases, their classification criteria, diagnostic techniques, and management approaches based on the 2017 Classification System. The flowcharts and decision trees presented can guide implantologists on how to deal with implant complications, in particular peri-implant diseases, including peri-implant mucositis, peri-implantitis, and implant soft- and hard-tissue deficiencies. Future long-term studies in this area are definitely needed to establish the effectiveness of various treatment approaches.
{"title":"Clinical decision-making in diagnosis and treatment of peri-implant diseases and conditions with 2017 Classification System","authors":"Deepak Sharma","doi":"10.4103/jdi.jdi_16_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_16_21","url":null,"abstract":"As the practice of dental implantology keeps growing exponentially worldwide, implantologists face an ever-increasing challenge to manage peri-implant diseases and complications. At present, the approaches to diagnose, classify, and treat peri-implant diseases are not uniform, standardized, or systematic. To address these limitations, a classification for peri-implant diseases and conditions was presented in the Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions in 2017 organized by the American Academy of Periodontology and European Federation of Periodontology. Since its inception in 2017, this comprehensive classification system has become the new standard of clinical practice around the world. The article provides an overview and description of peri-implant diseases, their classification criteria, diagnostic techniques, and management approaches based on the 2017 Classification System. The flowcharts and decision trees presented can guide implantologists on how to deal with implant complications, in particular peri-implant diseases, including peri-implant mucositis, peri-implantitis, and implant soft- and hard-tissue deficiencies. Future long-term studies in this area are definitely needed to establish the effectiveness of various treatment approaches.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131667544","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Daniela Blanco-Gonzalez, Francisco Villalobos-Ramirez, Ottón Fernández-López, D. Chavarría-Bolaños, Tatiana Vargas-Koudriavtsev
Introduction: Implant restorations should endure a variable range of forces over a long period of time. Some commercial brands offer the implant together with an accessory called “implant mount” or “implant holder,” which might be used as a temporary abutment. However, scientific literature in the use of implant holders as abutments for restorations is scarce. Objectives: The purpose of this in vitro study was to compare the load at which implant holders of Implant Direct® and Zimmer® fail under static compression after being subjected to fatigue, and to compare the gap produced between the implant–holder complexes after dynamic loading. Materials and Methods: The test protocol was based on the recommendation of ISO 14801. Five implant–implant holder assemblies of each brand were subjected to dynamic loading. A load of 250 N was applied at 5 × 106 cycles and at 15 Hz stress frequency (Eden Prairie, MN, USA). The gap (μm) at the interface was measured postfatigue using scanning electron microscopy (S-3700N, HITACHI, Japan), and afterward, static loading was applied and the maximum load (N) after the point of failure was established. Implant–definitive abutment complexes were used as controls. Data were analyzed by means of a central tendency measurement test Mann–Whitney U-test (nonparametric). Results: There was no difference between both the implant holder groups (P ≤ 0.05); however, a slight trend of greater resistance was observed for the Zimmer® group. The gap in the interface was greater for Implant Direct® implants, but the difference was not statistically significant. Conclusion: No significant differences were found in terms of the maximum load under compression or the interface gap after the dynamic loading in the two experimental groups.
{"title":"Resistance to dynamic and static loading of the implant mounts on its respective implant","authors":"Daniela Blanco-Gonzalez, Francisco Villalobos-Ramirez, Ottón Fernández-López, D. Chavarría-Bolaños, Tatiana Vargas-Koudriavtsev","doi":"10.4103/jdi.jdi_4_21","DOIUrl":"https://doi.org/10.4103/jdi.jdi_4_21","url":null,"abstract":"Introduction: Implant restorations should endure a variable range of forces over a long period of time. Some commercial brands offer the implant together with an accessory called “implant mount” or “implant holder,” which might be used as a temporary abutment. However, scientific literature in the use of implant holders as abutments for restorations is scarce. Objectives: The purpose of this in vitro study was to compare the load at which implant holders of Implant Direct® and Zimmer® fail under static compression after being subjected to fatigue, and to compare the gap produced between the implant–holder complexes after dynamic loading. Materials and Methods: The test protocol was based on the recommendation of ISO 14801. Five implant–implant holder assemblies of each brand were subjected to dynamic loading. A load of 250 N was applied at 5 × 106 cycles and at 15 Hz stress frequency (Eden Prairie, MN, USA). The gap (μm) at the interface was measured postfatigue using scanning electron microscopy (S-3700N, HITACHI, Japan), and afterward, static loading was applied and the maximum load (N) after the point of failure was established. Implant–definitive abutment complexes were used as controls. Data were analyzed by means of a central tendency measurement test Mann–Whitney U-test (nonparametric). Results: There was no difference between both the implant holder groups (P ≤ 0.05); however, a slight trend of greater resistance was observed for the Zimmer® group. The gap in the interface was greater for Implant Direct® implants, but the difference was not statistically significant. Conclusion: No significant differences were found in terms of the maximum load under compression or the interface gap after the dynamic loading in the two experimental groups.","PeriodicalId":212982,"journal":{"name":"Journal of Dental Implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124515089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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