Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2024047947
Vinay Sivaswamy, S D Balaji Anand, Jacob Mathew Philip, C J Venkatakrishnan, M Narasimman, Helen Mary Abraham, B Pavithra
The long-term success of dental implants depends not only upon implant osseointegration, but also on the surrounding soft tissue health and profile. An ideal emergence profile contributes to the aesthetics of an implant restoration. It maintains long-term implant health by preventing potential food accumulation and forming a barrier against bacterial ingress. This article describes a method for obtaining an impression of implants that will capture the custom guided peri-implant soft tissue contours accurately, thus contributing to a final restoration with favorable aesthetics. We also describe a technique for reducing excess cement in a cement retained implant crown, thereby contributing to the health of the peri-implant tissues.
{"title":"Transfer of Guided Emergence Profile Developed Using Customized Provisional Implant Restoration and Cementation Using an Abutment Replica Technique: A Case Report.","authors":"Vinay Sivaswamy, S D Balaji Anand, Jacob Mathew Philip, C J Venkatakrishnan, M Narasimman, Helen Mary Abraham, B Pavithra","doi":"10.1615/JLongTermEffMedImplants.2024047947","DOIUrl":"10.1615/JLongTermEffMedImplants.2024047947","url":null,"abstract":"<p><p>The long-term success of dental implants depends not only upon implant osseointegration, but also on the surrounding soft tissue health and profile. An ideal emergence profile contributes to the aesthetics of an implant restoration. It maintains long-term implant health by preventing potential food accumulation and forming a barrier against bacterial ingress. This article describes a method for obtaining an impression of implants that will capture the custom guided peri-implant soft tissue contours accurately, thus contributing to a final restoration with favorable aesthetics. We also describe a technique for reducing excess cement in a cement retained implant crown, thereby contributing to the health of the peri-implant tissues.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141261078","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2023048802
Khushali K Shah, Vaishnavi Rajaraman, Deepak Nallaswamy Veeraiyan, Subhabrata Maiti
The aim of this systematic review was to identify and analyze the findings of various studies that analyzed the changes in the color stability of maxillofacial prosthetic materials after the addition of various colorants and nanoparticles and assess the change in color after being subjected to either natural or artificial accelerated aging as well as outdoor aging. This systematic review was conducted in accordance with the guidelines of transparent reporting of systematic reviews and meta-analysis (PRISMA Statement). The primary objective of this systematic review was to evaluate the color stability of maxillofacial prosthesis. The secondary objective was to assess the effect of various colorants; pigments; opacifiers; UV absorbers-such as inorganic colorants (dry earth pigments); metal oxides; and organic colorants. The time period of the included studies extended from 2013 to 2023. Electronic database search identified a total of 217 studies. Ten studies were included to meet the research question. All 10 included studies analyzed the effect of various colorants and their exposure to various aging and weathering conditions. It was found that various pigments and nanoparticles had an effect on the color stability. Also weathering and aging conditions had a direct effect on the color stability as well. In terms of disinfection, although there was not much color difference observed, highest change in color stability was observed when rubbing or brushing of the prosthesis was carried out. In conclusion, the color stability of maxillofacial prosthetics is a critical factor that influences both patient satisfaction and the overall cosmetic look. The potential of pigments and nanoparticles to enhance the color stability of silicone-based maxillofacial prosthesis has received much research. By avoiding color fading and discoloration brought on by environmental variables including UV radiation, aging, and chemical exposure, the inclusion of various pigments and nanoparticles has been demonstrated to improve the color stability of silicone maxillofacial prostheses.
{"title":"A Systematic Review on Maxillofacial Prosthesis with Respect to Their Color Stability.","authors":"Khushali K Shah, Vaishnavi Rajaraman, Deepak Nallaswamy Veeraiyan, Subhabrata Maiti","doi":"10.1615/JLongTermEffMedImplants.2023048802","DOIUrl":"10.1615/JLongTermEffMedImplants.2023048802","url":null,"abstract":"<p><p>The aim of this systematic review was to identify and analyze the findings of various studies that analyzed the changes in the color stability of maxillofacial prosthetic materials after the addition of various colorants and nanoparticles and assess the change in color after being subjected to either natural or artificial accelerated aging as well as outdoor aging. This systematic review was conducted in accordance with the guidelines of transparent reporting of systematic reviews and meta-analysis (PRISMA Statement). The primary objective of this systematic review was to evaluate the color stability of maxillofacial prosthesis. The secondary objective was to assess the effect of various colorants; pigments; opacifiers; UV absorbers-such as inorganic colorants (dry earth pigments); metal oxides; and organic colorants. The time period of the included studies extended from 2013 to 2023. Electronic database search identified a total of 217 studies. Ten studies were included to meet the research question. All 10 included studies analyzed the effect of various colorants and their exposure to various aging and weathering conditions. It was found that various pigments and nanoparticles had an effect on the color stability. Also weathering and aging conditions had a direct effect on the color stability as well. In terms of disinfection, although there was not much color difference observed, highest change in color stability was observed when rubbing or brushing of the prosthesis was carried out. In conclusion, the color stability of maxillofacial prosthetics is a critical factor that influences both patient satisfaction and the overall cosmetic look. The potential of pigments and nanoparticles to enhance the color stability of silicone-based maxillofacial prosthesis has received much research. By avoiding color fading and discoloration brought on by environmental variables including UV radiation, aging, and chemical exposure, the inclusion of various pigments and nanoparticles has been demonstrated to improve the color stability of silicone maxillofacial prostheses.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67612506","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}
Robotic arm-assisted total knee arthroplasty (RATKA) represents a haptic assistive robotic arm used for bone preparation. The purpose of this study was to present implant survivorship, complications and evaluate patients' satisfaction, clinical and functional outcome of RATKA with a minimum of 1-year follow-up. The Oxford Knee Score was recorded preoperatively and at last follow-up. Patients' satisfaction rates, as well as complications and re-operations were studied. Anatomical alignment including varus, valgus deformities and flexion, extension, pre-and postoperatively were evaluated. A total of 156 patients with mean age = 71.9 years were included in the study. The mean follow-up was 35.7 months, while one revision was performed due to infection. Statistically significant improvement of the Oxford Knee Score, as well as of the knee alignment deformities were recorded, while 99.4% of patients reported to be "very satisfied" or "satisfied" with the procedure. RATKA seems to be a safe, as well as reproductible procedure at short-and mid-term follow-up, while the accurate implant positioning may lead to favorable long-term outcomes.
{"title":"Robotic Arm-Assisted Total Knee Arthroplasty: Anatomical Alignment and Mid-Term Outcomes from the First Cohort Originating in Greece.","authors":"Konstantinos Dretakis, Vasilios G Igoumenou, Symeon Naoum, Konstantinos Raptis, Christos Koutserimpas","doi":"10.1615/JLongTermEffMedImplants.2023048690","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2023048690","url":null,"abstract":"<p><p>Robotic arm-assisted total knee arthroplasty (RATKA) represents a haptic assistive robotic arm used for bone preparation. The purpose of this study was to present implant survivorship, complications and evaluate patients' satisfaction, clinical and functional outcome of RATKA with a minimum of 1-year follow-up. The Oxford Knee Score was recorded preoperatively and at last follow-up. Patients' satisfaction rates, as well as complications and re-operations were studied. Anatomical alignment including varus, valgus deformities and flexion, extension, pre-and postoperatively were evaluated. A total of 156 patients with mean age = 71.9 years were included in the study. The mean follow-up was 35.7 months, while one revision was performed due to infection. Statistically significant improvement of the Oxford Knee Score, as well as of the knee alignment deformities were recorded, while 99.4% of patients reported to be \"very satisfied\" or \"satisfied\" with the procedure. RATKA seems to be a safe, as well as reproductible procedure at short-and mid-term follow-up, while the accurate implant positioning may lead to favorable long-term outcomes.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140175069","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2023049402
Jennifer Kurowicki, Stuart Changoor, Daniel Coban, Neil Patel, Kumar Sinha, Ki Hwang, Arash Emami
This study was conducted to assess the patient characteristics, types of treatment, and outcomes of patients who are surgically treated for vertebral osteomyelitis (VO) in the United States. VO can be treated with or without surgical intervention. Surgically treated cases of VO are associated with significant morbidity and mortality, and incur major healthcare costs. There are few studies assessing the characteristics and outcomes of patients with VO who are treated surgically, as well as the overall impact of surgically managed VO on the healthcare system of the United States. Utilizing the Nationwide Inpatient Sample (NIS) database, 44,401 patients were identified who underwent surgical treatment for VO over a fifteen year period. Severity of comorbidity burden was calculated using the Deyo Index (DI). Surgical approach and comorbidities were analyzed in regard to their impact on complications, mortality rate, LOS, and hospitalization charges. The incidence of surgical intervention for patients who had VO increased from 0.6 to 1.1 per U.S. persons over the study period. Surgically treated patients had a mean age of 56 years, were 75.8% white, were 54.5% male, 37.9% carried Medicare insurance, and they had a mean DI of 0.88. Anterior/posterior approach (OR: 3.53), thoracolumbar fusion (OR: 2.69), thoracolumbar fusion (OR: 19.94), and anterior/posterior approach (OR: 64.73) were the surgical factors that most significantly predicted any complication, mortality, increased LOS, and increased hospital charges, respectively (P < 0.001). The mean inflation-adjusted total hospital cost increased from $20,355 to $39,991 per patient over the study period. VO has been steadily increasing in the United States. Incidence and inflation-adjusted costs nearly doubled. Anterior/posterior approach and thoracolumbar fusion most significantly predicted negative outcomes. VO is associated with lengthy and expensive hospital stays resulting in a significant burden to patients and the healthcare system.
本研究旨在评估美国接受手术治疗的脊椎骨髓炎(VO)患者的特征、治疗类型和疗效。脊椎骨髓炎可通过或不通过手术干预进行治疗。经手术治疗的椎体骨髓炎病例具有显著的发病率和死亡率,并产生高昂的医疗费用。很少有研究对接受手术治疗的 VO 患者的特征和预后以及手术治疗 VO 对美国医疗系统的总体影响进行评估。利用全国住院病人抽样(NIS)数据库,我们确定了 44,401 名在 15 年间接受过手术治疗的 VO 患者。合并症负担的严重程度采用戴尤指数(Deyo Index,DI)进行计算。分析了手术方法和合并症对并发症、死亡率、住院时间和住院费用的影响。在研究期间,VO 患者的手术干预发生率从每美国人 0.6 例增加到 1.1 例。接受手术治疗的患者平均年龄为56岁,75.8%为白人,54.5%为男性,37.9%有医疗保险,平均DI为0.88。前/后入路(OR:3.53)、胸腰椎融合术(OR:2.69)、胸腰椎融合术(OR:19.94)和前/后入路(OR:64.73)分别是预测并发症、死亡率、住院时间延长和住院费用增加最显著的手术因素(P < 0.001)。在研究期间,每位患者经通货膨胀调整后的平均住院总费用从 20,355 美元增至 39,991 美元。在美国,VO 的发病率一直在稳步上升。发病率和通货膨胀调整后的费用几乎翻了一番。前路/后路方法和胸腰椎融合术对不良预后的影响最大。VO与漫长而昂贵的住院时间有关,给患者和医疗系统造成了巨大负担。
{"title":"The Impact of Patient Characteristics on Outcomes of Surgically Managed Vertebral Osteomyelitis in the United States: Insights from a National Database Study.","authors":"Jennifer Kurowicki, Stuart Changoor, Daniel Coban, Neil Patel, Kumar Sinha, Ki Hwang, Arash Emami","doi":"10.1615/JLongTermEffMedImplants.2023049402","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2023049402","url":null,"abstract":"<p><p>This study was conducted to assess the patient characteristics, types of treatment, and outcomes of patients who are surgically treated for vertebral osteomyelitis (VO) in the United States. VO can be treated with or without surgical intervention. Surgically treated cases of VO are associated with significant morbidity and mortality, and incur major healthcare costs. There are few studies assessing the characteristics and outcomes of patients with VO who are treated surgically, as well as the overall impact of surgically managed VO on the healthcare system of the United States. Utilizing the Nationwide Inpatient Sample (NIS) database, 44,401 patients were identified who underwent surgical treatment for VO over a fifteen year period. Severity of comorbidity burden was calculated using the Deyo Index (DI). Surgical approach and comorbidities were analyzed in regard to their impact on complications, mortality rate, LOS, and hospitalization charges. The incidence of surgical intervention for patients who had VO increased from 0.6 to 1.1 per U.S. persons over the study period. Surgically treated patients had a mean age of 56 years, were 75.8% white, were 54.5% male, 37.9% carried Medicare insurance, and they had a mean DI of 0.88. Anterior/posterior approach (OR: 3.53), thoracolumbar fusion (OR: 2.69), thoracolumbar fusion (OR: 19.94), and anterior/posterior approach (OR: 64.73) were the surgical factors that most significantly predicted any complication, mortality, increased LOS, and increased hospital charges, respectively (P < 0.001). The mean inflation-adjusted total hospital cost increased from $20,355 to $39,991 per patient over the study period. VO has been steadily increasing in the United States. Incidence and inflation-adjusted costs nearly doubled. Anterior/posterior approach and thoracolumbar fusion most significantly predicted negative outcomes. VO is associated with lengthy and expensive hospital stays resulting in a significant burden to patients and the healthcare system.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140175070","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2024049752
Alok Kumar, Abhishek Singh
Powder-mixed electrical discharge machining (PMEDM) enhances the effectiveness of the electric discharge machining process. It has been used on the Mg alloy AZ91D to address biodegradation concerns in implants. By combining nano-conductive powder particles with the dielectric fluid, PMEDM creates a functional surface. Process parameters like pulse on time, pulse off time, peak current, and powder concentration are examined to optimize material removal rate (MRR), surface roughness (SR), and white layer thickness (WLT). The optimization of input parameters was completed using the Taguchi L9 technique and further analyzed using ANOVA technique that illustrates Ton and pulse-off time as more significant process parameters for powder mixed electric discharge machining as compared with electric potential and peak current. The optimal surface roughness value is found to be 2.215 μm at 3A pulse current and 15 μs Toff time which suggest the material to be suitable for implants.
{"title":"Surface Modification of Magnesium Alloy AZ91D Using Nanopowder Mixed Electrical Discharge Machining for Biodegradable Implant.","authors":"Alok Kumar, Abhishek Singh","doi":"10.1615/JLongTermEffMedImplants.2024049752","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024049752","url":null,"abstract":"<p><p>Powder-mixed electrical discharge machining (PMEDM) enhances the effectiveness of the electric discharge machining process. It has been used on the Mg alloy AZ91D to address biodegradation concerns in implants. By combining nano-conductive powder particles with the dielectric fluid, PMEDM creates a functional surface. Process parameters like pulse on time, pulse off time, peak current, and powder concentration are examined to optimize material removal rate (MRR), surface roughness (SR), and white layer thickness (WLT). The optimization of input parameters was completed using the Taguchi L9 technique and further analyzed using ANOVA technique that illustrates Ton and pulse-off time as more significant process parameters for powder mixed electric discharge machining as compared with electric potential and peak current. The optimal surface roughness value is found to be 2.215 μm at 3A pulse current and 15 μs Toff time which suggest the material to be suitable for implants.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260845","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2024050866
Pavlos Altsitzioglou, Ioannis Zafeiris, Fotini Soucacos, Pantelis Limneos, Eleftheria Soulioti, Evanthia Mitsiokapa, Theodosios Saranteas, Andreas F Mavrogenis
A thorough literature search was done in PubMed and Google Scholar as well as in physical books in libraries to summarize the literature on the history and evolution of medicine and orthopedics. The philosophical ideas that emerged in ancient Greece served as a foundation for the development of medicine. In the 5th century BC, the schools of Knidos and Kos emerged as influential centers for the development of medical thinking. The field of orthopedics can be traced back to early human civilizations. Ancient Egyptians perpetuated the tradition of employing splinting techniques. Hippocrates provided insights for the diagnosis, correction and treatment of many musculoskeletal entities. The field of medicine experienced a period of limited advancement during the Middle Ages. The Renaissance provided for the foundation of modern orthopedics and important contributions to the understanding and implementation of antisepsis. The discovery of x-ray and advancements in infection control and anesthesia have shown substantial progress in the domain of orthopedics and have contributed to the development of orthopedic subspecialization. Orthopedic surgery holds a historical lineage deeply entrenched in ancient practices and early human civilizations. Physicians specializing in orthopedics should be aware of the historical origins of their discipline and continue to evolve through further subspecialization and enhanced research.
我们在 PubMed 和 Google Scholar 以及图书馆的实体书中进行了全面的文献检索,以总结有关医学和骨科的历史和演变的文献。古希腊出现的哲学思想是医学发展的基础。公元前 5 世纪,克尼多斯(Knidos)和科斯(Kos)学派成为具有影响力的医学思想发展中心。骨科领域可以追溯到人类早期文明。古埃及人延续了使用夹板技术的传统。希波克拉底为许多肌肉骨骼疾病的诊断、矫正和治疗提供了真知灼见。在中世纪,医学领域经历了一个进步有限的时期。文艺复兴时期奠定了现代骨科的基础,并对防腐的理解和实施做出了重要贡献。X 射线的发现以及在感染控制和麻醉方面的进步显示了骨科领域的巨大进步,并促进了骨科亚专业的发展。骨科手术的历史源远流长,在古代实践和早期人类文明中根深蒂固。骨科专业医生应了解其学科的历史渊源,并通过进一步的亚专业化和加强研究继续发展。
{"title":"The History of Orthopedics in the Long Term: From General Medicine to Medical Specialties.","authors":"Pavlos Altsitzioglou, Ioannis Zafeiris, Fotini Soucacos, Pantelis Limneos, Eleftheria Soulioti, Evanthia Mitsiokapa, Theodosios Saranteas, Andreas F Mavrogenis","doi":"10.1615/JLongTermEffMedImplants.2024050866","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024050866","url":null,"abstract":"<p><p>A thorough literature search was done in PubMed and Google Scholar as well as in physical books in libraries to summarize the literature on the history and evolution of medicine and orthopedics. The philosophical ideas that emerged in ancient Greece served as a foundation for the development of medicine. In the 5th century BC, the schools of Knidos and Kos emerged as influential centers for the development of medical thinking. The field of orthopedics can be traced back to early human civilizations. Ancient Egyptians perpetuated the tradition of employing splinting techniques. Hippocrates provided insights for the diagnosis, correction and treatment of many musculoskeletal entities. The field of medicine experienced a period of limited advancement during the Middle Ages. The Renaissance provided for the foundation of modern orthopedics and important contributions to the understanding and implementation of antisepsis. The discovery of x-ray and advancements in infection control and anesthesia have shown substantial progress in the domain of orthopedics and have contributed to the development of orthopedic subspecialization. Orthopedic surgery holds a historical lineage deeply entrenched in ancient practices and early human civilizations. Physicians specializing in orthopedics should be aware of the historical origins of their discipline and continue to evolve through further subspecialization and enhanced research.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141261076","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}
This study aimed to compare the volume and quality of the newly formed bone following application of two types of xenografts and one synthetic material in bone defects in rabbit calvaria from histological and micro-CT aspects. Four 8-mm defects were created in 12 rabbit calvaria. Three defects were filled with bone substitutes and one was left unfilled as the control group. The newly formed bone was evaluated histologically and also by micro-CT at 8 and 12 weeks after the intervention. The percentage of osteogenesis was comparable in histomor-phometric assessment and micro-CT. Histological analysis showed that the percentage of the newly formed bone was 10.92 ± 5.17%, 14.70 ± 11.02%, 11.47 ± 7.04%, and 9.45 ± 5.18% in groups bovine 1, bovine 2, synthetic, and negative control, respectively after 8 weeks. These values were 33.70 ± 11.48%, 26.30 ± 18.05%, 22.92 ± 6.30%, and 14.82 ± 8.59%, respectively at 12 weeks. The difference in the percentage of the new bone formation at 8 and 12 weeks was not significant in any group (P > 0.05) except for bovine 1 group (P < 0.05). Micro-CT confirmed new bone formation in all groups but according to the micro-CT results, the difference between the control and other groups was significant in this respect (P < 0.05). All bone substitutes enhanced new bone formation compared with the control group. Micro-CT assessment yielded more accurate and different results compared with histological assessment.
{"title":"Comparison of the Volume and Histological Properties of Newly Formed Bone after the Application of Three Types of Bone Substitutes in Critical-Sized Bone Defects.","authors":"Shiva Esfandiari, Reza Amid, Mahdi Kadkhodazadeh, Aida Kheiri","doi":"10.1615/JLongTermEffMedImplants.2023046281","DOIUrl":"10.1615/JLongTermEffMedImplants.2023046281","url":null,"abstract":"<p><p>This study aimed to compare the volume and quality of the newly formed bone following application of two types of xenografts and one synthetic material in bone defects in rabbit calvaria from histological and micro-CT aspects. Four 8-mm defects were created in 12 rabbit calvaria. Three defects were filled with bone substitutes and one was left unfilled as the control group. The newly formed bone was evaluated histologically and also by micro-CT at 8 and 12 weeks after the intervention. The percentage of osteogenesis was comparable in histomor-phometric assessment and micro-CT. Histological analysis showed that the percentage of the newly formed bone was 10.92 ± 5.17%, 14.70 ± 11.02%, 11.47 ± 7.04%, and 9.45 ± 5.18% in groups bovine 1, bovine 2, synthetic, and negative control, respectively after 8 weeks. These values were 33.70 ± 11.48%, 26.30 ± 18.05%, 22.92 ± 6.30%, and 14.82 ± 8.59%, respectively at 12 weeks. The difference in the percentage of the new bone formation at 8 and 12 weeks was not significant in any group (P > 0.05) except for bovine 1 group (P < 0.05). Micro-CT confirmed new bone formation in all groups but according to the micro-CT results, the difference between the control and other groups was significant in this respect (P < 0.05). All bone substitutes enhanced new bone formation compared with the control group. Micro-CT assessment yielded more accurate and different results compared with histological assessment.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67611683","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2023047323
Apurva Choudhary, Arvina Rajasekar
Peri-implant mucosistis is similar to gingivitis, the former affects the mucosa around implants without bone loss. The aim of this study was to determine the effectiveness of ozonated olive oil gel in the management of peri-implant mucositis. A randomized controlled clinical trial was conducted among 50 patients with peri-implant mucositis within the age group of 25-50 years. They were randomly divided into two groups with 25 participants in each group based on the intervention [Group A (Ozonated olive oil gel), Group B (Chlorhexidine gel)]. Silness and Loe plaque index (PI) and Loe and Silness gingival index (GI) were recorded at baseline and after 4 weeks. Paired t-test and independent t-test was used to test the significance. Within the groups, there was a statistically significant reduction in PI and GI from baseline (P < 0.05). However, the difference in PI and GI between both the groups was statistically insignificant (P > 0.05). Ozonated olive oil gel was equally effective to chlorhexidine gel in the management of peri-implant mucositis.
种植体周围粘膜炎与牙龈炎相似,前者会影响种植体周围的粘膜,但不会造成骨质流失。本研究旨在确定臭氧橄榄油凝胶在治疗种植体周围粘膜炎方面的效果。这项随机对照临床试验在 50 名年龄在 25-50 岁之间的种植体周围粘膜炎患者中进行。根据干预措施[A 组(臭氧橄榄油凝胶)、B 组(洗必泰凝胶)],他们被随机分为两组,每组 25 人。在基线和 4 周后记录 Silness 和 Loe 牙菌斑指数(PI)以及 Loe 和 Silness 牙龈指数(GI)。采用配对 t 检验和独立 t 检验进行显著性检验。在各组内,PI 和 GI 与基线相比均有统计学意义上的显著降低(P < 0.05)。然而,两组之间的 PI 和 GI 差异在统计学上不显著(P > 0.05)。在治疗种植体周围粘膜炎方面,臭氧橄榄油凝胶与洗必泰凝胶具有同等疗效。
{"title":"Efficacy of Ozonated Olive Oil Gel in the Management of Peri-Implant Mucositis.","authors":"Apurva Choudhary, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2023047323","DOIUrl":"10.1615/JLongTermEffMedImplants.2023047323","url":null,"abstract":"<p><p>Peri-implant mucosistis is similar to gingivitis, the former affects the mucosa around implants without bone loss. The aim of this study was to determine the effectiveness of ozonated olive oil gel in the management of peri-implant mucositis. A randomized controlled clinical trial was conducted among 50 patients with peri-implant mucositis within the age group of 25-50 years. They were randomly divided into two groups with 25 participants in each group based on the intervention [Group A (Ozonated olive oil gel), Group B (Chlorhexidine gel)]. Silness and Loe plaque index (PI) and Loe and Silness gingival index (GI) were recorded at baseline and after 4 weeks. Paired t-test and independent t-test was used to test the significance. Within the groups, there was a statistically significant reduction in PI and GI from baseline (P < 0.05). However, the difference in PI and GI between both the groups was statistically insignificant (P > 0.05). Ozonated olive oil gel was equally effective to chlorhexidine gel in the management of peri-implant mucositis.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67611889","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}
Pub Date : 2024-01-01DOI: 10.1615/JLongTermEffMedImplants.2023049708
S Padmaja, Arvina Rajasekar
Dental implants have gained popularity in recent years. The most important variable in determining the effectiveness of the implant's primary stability is bone density. The success of the implant depends on proper procedure and implant stability. With this background, the aim of the present study was to study the correlation between primary stability and bone density. The present retrospective study was conducted among 2,440 patients who had undergone implant treatment in the Department of Implantology, Saveetha Dental College and Hospitals, Chennai, from June 2021 to February 2022. Data regarding patient's age, gender, implant location, bone density, and primary stability were taken into consideration. Association between primary stability and bone density was assessed using the Chi-square test. Of the subjects, 33.42% had D2 bone density in the lower posterior region; 13.98% had D3 density in the lower posterior region. Primary stability of 30-40 Ncm was seen in the majority of the subjects; 32.64% who had primary stability of 30-40 Ncm had D2 bone density. There was a statistically significant association between implant site and bone density (p = 0.04) and primary stability and bone density (p = 0.03). Within the limitations of the study, it can be concluded that there is a strong association between implant primary stability and bone density.
{"title":"Correlation between Primary Stability of Dental Implants and Bone Density: A Retrospective Analysis.","authors":"S Padmaja, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2023049708","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2023049708","url":null,"abstract":"<p><p>Dental implants have gained popularity in recent years. The most important variable in determining the effectiveness of the implant's primary stability is bone density. The success of the implant depends on proper procedure and implant stability. With this background, the aim of the present study was to study the correlation between primary stability and bone density. The present retrospective study was conducted among 2,440 patients who had undergone implant treatment in the Department of Implantology, Saveetha Dental College and Hospitals, Chennai, from June 2021 to February 2022. Data regarding patient's age, gender, implant location, bone density, and primary stability were taken into consideration. Association between primary stability and bone density was assessed using the Chi-square test. Of the subjects, 33.42% had D2 bone density in the lower posterior region; 13.98% had D3 density in the lower posterior region. Primary stability of 30-40 Ncm was seen in the majority of the subjects; 32.64% who had primary stability of 30-40 Ncm had D2 bone density. There was a statistically significant association between implant site and bone density (p = 0.04) and primary stability and bone density (p = 0.03). Within the limitations of the study, it can be concluded that there is a strong association between implant primary stability and bone density.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260666","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}
We present the design and stability analysis of an adaptive neuro-fuzzy inference system (ANFIS)-based controller of a pacemaker in MATLAB Simulink. ANFIS uses learning and speed properties of fuzzy and neural networks. Based on body states and preprogrammed situations of patients (age and sex, etc.), heart rate and amplitude of pacing pulse are changed. Output signal that is fed backed from heart is compared to the reference fuzzy bases ANFIS signals. After designing ANFIS based controller, the stability of the proposed system has been tested in both the time (step response) and trequency (Bode diagram and Nichols chart) domains. In our previous study, the step response analyzed and compared with other works. For frequency domain, all the possible frequency analysis methods have been tested but because of nonlinear properties of ANFIS, after linearization, just the Bode diagram achieved good results. The step response results in time domain is compared with previous work's results including optimum heart pulse rate for each particular patient. In the frequency domain, the Bode diagram stability analysis showed gain and phase margin as follows: GM (dB) = 42.1 and PM (deg) = 100.
{"title":"Design and Stability Analysis of an Adaptive Neuro-Fuzzy Inference System (ANFIS)-Based Pacemaker Controller in MATLAB Simulink.","authors":"Asghar Dabiri Aghdam, Nader Jafarnia Dabanloo, Fereidoun Nooshiravan Rahatabad, Keivan Maghooli","doi":"10.1615/JLongTermEffMedImplants.2023043889","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2023043889","url":null,"abstract":"<p><p>We present the design and stability analysis of an adaptive neuro-fuzzy inference system (ANFIS)-based controller of a pacemaker in MATLAB Simulink. ANFIS uses learning and speed properties of fuzzy and neural networks. Based on body states and preprogrammed situations of patients (age and sex, etc.), heart rate and amplitude of pacing pulse are changed. Output signal that is fed backed from heart is compared to the reference fuzzy bases ANFIS signals. After designing ANFIS based controller, the stability of the proposed system has been tested in both the time (step response) and trequency (Bode diagram and Nichols chart) domains. In our previous study, the step response analyzed and compared with other works. For frequency domain, all the possible frequency analysis methods have been tested but because of nonlinear properties of ANFIS, after linearization, just the Bode diagram achieved good results. The step response results in time domain is compared with previous work's results including optimum heart pulse rate for each particular patient. In the frequency domain, the Bode diagram stability analysis showed gain and phase margin as follows: GM (dB) = 42.1 and PM (deg) = 100.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141260730","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}