Vamsi Krishna Dommeti, Mohadese Rajaeirad, Nima Jamshidi, Sandipan Roy
{"title":"The Effect of Dimple-Based TMJ Design and Its Biomechanical Effect on Reducing Stress.","authors":"Vamsi Krishna Dommeti, Mohadese Rajaeirad, Nima Jamshidi, Sandipan Roy","doi":"10.1615/JLongTermEffMedImplants.2024052501","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024052501","url":null,"abstract":"<p><p>Temporomandibular joint (TMJ) disorders significantly impact orofacial health and quality of life, necessitating effective interventions. This study presents a comprehensive finite element analysis (FEA) focusing on the design and material modifications of temporomandibular joint implants, with the aim of improving their long-term stability and performance. Accurate mandible models extracted from Computational Tomography (CT) scans were used to create three variations of implants, each attached using varying screw configurations ranging from 2 to 5 for each analysis. The variations included implants without dimples, implants with 10% dimples, and implants with 20% dimples. The FEA considered material properties of Titanium and Ti-Nb-Zr alloy for the implants. The FEA results revealed that for 10% dimples models, equivalent stress was reduced by 6.25% with two screws fixation and further decreased by 14.28% with three screws, irrespective of the implant volume, reaffirming the significance of screw fixation. The model secured with three screws exhibited the least amount of stress for both titanium and zirconium alloys and dimple implants showed promise in reducing stress levels, particularly in low bone density conditions. These findings not only underscore the potential advantages of dimple implants in facilitating bone in growth and stability at the bone-implant interface but also highlight the pivotal role of implant dimples in modulating stress levels. The study contributes valuable insights for future advancements in TMJ implantology, offering potential optimizations for implant design and clinical outcomes.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"33-39"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144013805","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}
{"title":"Inflammatory and Antioxidant Status in Peri-Implant Health and Diseases: A Biochemical Analysis.","authors":"Poulami Chakraborty, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2025052691","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2025052691","url":null,"abstract":"<p><strong>Background: </strong>Peri-implant disease pathogenesis results in production of pro-inflammatory mediators. These mediators alter the redox balance leading to decrease in antioxidants. The aim of the study was to compare the levels of interleukin-6 (IL-6) and superoxide dismutase (SOD) in peri-implant health and diseases.</p><p><strong>Materials and methods: </strong>The present observational study was carried out from March 2023 to September 2023 in the Department of Implantology, Saveetha Dental College and Hospitals, Chennai, India. A total of 60 patients with peri-implant health (n = 20), peri-implant mucositis (n = 20) and peri-implantitis (n = 20) were enrolled. Unstimulated salivary samples were collected and subjected to ELISA for IL-6 and SOD analysis. IL-6 and SOD levels were then compared between the groups using ANOVA.</p><p><strong>Results: </strong>There was a statistically significant difference in IL-6 and SOD levels between the three groups with p value of 0.003 and 0.000 respectively.</p><p><strong>Conclusion: </strong>The present study suggests that IL-6 level increases and SOD level decreases with severity of peri-implant diseases.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"77-81"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996040","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}
Kalliopi Alpantaki, Alexandros Tsioupros, Christos Koutserimpas, Constantinos Chaniotakis, Alexander Hadjipavlou
{"title":"Surgical Site Infections Following Spinal Instrumentation: A Review of Risk Factors and Treatment Options.","authors":"Kalliopi Alpantaki, Alexandros Tsioupros, Christos Koutserimpas, Constantinos Chaniotakis, Alexander Hadjipavlou","doi":"10.1615/JLongTermEffMedImplants.2024051157","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024051157","url":null,"abstract":"<p><p>Postoperative infection of the instrumented spine carries serious morbidity, great cost, and even failure of the original objective. In the present review, we discuss the predisposing risk factors, analyze the effectiveness of preventive measures, and evaluate evidence-based treatment options for surgical site infections (SSIs) in spinal instrumentation procedures. Several risk factors are identified. Preoperative factors include concomitant infections, immunocompromised host conditions, advanced age, obesity, malnutrition, uncontrolled diabetes mellitus, tobacco use, and previous spinal surgery with instrumentation. Intraoperative factors include perioperative hypothermia, prolonged duration of surgery, posterior spinal approach, and violation of sterile conditions. Postoperative factors include paralytic patient and prolonged hospital bed rest. Distinct treatment options have been devised for the management of postoperative infection without the need of removing the instrumentation. Debridement is the initial approach and antibiotic therapy is an adjunctive step. Closure of the wound after infection may be accomplished by delayed primary, secondary intention closure or by other surgical methods such as continuing suction irrigation,VAC, and hyperbaric oxygen treatment. Infections with extensive soft tissue destruction and myonecrosis are best dealt with using muscle flaps after extensive debridement. Specific measures should be taken to minimize or eliminate the risk factors and optimize the patient's condition before spinal surgery with implants. However, if infection occurs despite prophylaxis, treatment should be instituted quickly and aggressively to prevent or reduce its consequences.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"47-60"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144039992","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}
{"title":"Evaluation of the Metallurgical Composition of Commercially Available Dental Implant Drills and Its Influence on Corrosion Resistance: An In Vitro Study.","authors":"Ramakrishna Harigopal, Ramesh Chowdhary","doi":"10.1615/JLongTermEffMedImplants.2024047254","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024047254","url":null,"abstract":"<p><p>The objective of this in vitro study was to evaluate the elemental composition of commercially available dental implant drills using the positive material identification testing (PMI), its influence on corrosion resistance and longevity. Three implant drills each from 5 different implant systems (Groups I to V) were included in the study. Positive material identification testing, a technique of non-destructive testing using X-ray diffraction was carried out to evaluate the elemental composition of each drill system in percentage and grade testing of the alloy used for manufacturing the drills. Groups I and II had the maximum Chromium content of 17.09%Cr and 16.09%Cr. Group IV had a minimum of 11.67%Cr. Nickel content was maximum in Group III. Groups I and II belonged to Ferritic stainless steel alloys while Groups III, IV, and V were Martensitic stainless steel alloys. Ferritic stainless steel alloy drills (Groups I and II) were vulnerable to corrosion and wear compared to Martensitic stainless steel alloy drills (Groups III, IV, and V) with repeated surgical use. Incorporation of newer elements in stainless steel alloys is essential to promote corrosion resistance and drill longevity.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"41-45"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143997590","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}
{"title":"Unveiling the Impact of Surface Treatments: A Prospective Analysis of Clinical and Radiographic Outcomes in Dental Implant Patients.","authors":"Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2024051955","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024051955","url":null,"abstract":"<p><p>Implant dentistry is a widely utilized treatment approach for fully or partially edentulous patients. To enhance the success rates of dental implants, various surface modifications have been developed. This study aimed to compare clinical and radiographic parameters in patients with sandblasted acid-etched versus anodized surface dental implants. In this prospective clinical study, 78 patients who had undergone implant placement for missing single posterior tooth in mandible using sandblasted acid-etched and anodized surface dental implants during August 2019-December 2019 were enrolled according to strict inclusion and exclusion criteria and were categorized into Group 1: SLA (n = 27), Group 2: SLActive (n = 26), Group 3: TiUnite (n = 25) based on the surface modification of the implants. Peri-implant probing depth (PPD) and crestal bone loss (CBL) measurements were carried out at 3 months and 1-year intervals. For intergroup comparison, one-way ANOVA and Tukey's HSD post hoc test were used. For intragroup comparison, paired t test was used. PPD and CBL in Group 3 implants was significantly higher than Groups 1 and 2 (P ≤ 0.05). On pairwise comparison, there was a statistically significant difference in PPD and CBL between the groups at baseline (P ≤ 0.05) and 1-year follow-up (P ≤ 0.05) except for Group 1 vs. Group 2 at 1-year follow-up (P > 0.05). Intragroup comparison of PPD and CBL showed that there was a statistically significant difference from baseline in all the three groups in terms of PPD (P ≤ 0.05) and CBL (P ≤ 0.05). Patients with anodized dental implants exhibited greater PPD and CBL compared with those with sandblasted acid-etched implants.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"7-14"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144021397","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}
{"title":"Preparation of a Carrageenan and Fucoidan Silica Nanoparticle-Based Membrane for Guided Bone Regeneration in Dental Implant Sites.","authors":"L Akshayaa, Balaji S Ganesh","doi":"10.1615/JLongTermEffMedImplants.2024049789","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024049789","url":null,"abstract":"<p><p>Carrageenans are the sulfated polysaccharides, extracted from the extracellular matrix of red seaweeds. Peri-implantitis is a pathological condition occurring in tissues around dental implants. Management of peri-implantitis should be concerned with control of infection, detoxification of the implant site and regeneration of alveolar bone. The goal of our study was to develop a membrane infused with carrageenan and fucoidan silica nanoparticles for guided bone regeneration around implant sites. Carrageenan (2%) was boiled for 2 min and 5% of fucoidan were added and boiled at 60°C and further 4000 μL of PEG was added, then film casting of membrane was done. 10 ml of silica nanoparticles were mixed in 0.1 g of SiO2 nanoparticles and were added to prepared carrageenan and fucoidan solution. Then film casting was done and air dried for 24 h. Antimicrobial assay, antioxidant activity, swelling and degradation analysis, FTIR test, tensile strength testing and SEM analysis were performed. The antimicrobial effect of carrageenan membrane showed better inhibitory effect against Streptococcus mutans. Antioxidant activity of the membrane infused with carrageenan and fucoidan silica nanoparticles shows 52.93 ± 0.35 SC effect percentage. The maximum force of tensile stress at break for carrageenan fucoidan incorporated with silica nanoparticles was about 5.76 MPa and for control sample membrane was 4.34 Mpa. Carrageenan and fucoidan based silica nanoparticles developed membrane showed good tensile strength and proven to have better antimicrobial, antioxidant activity with water absorption capacity which can be effectively used for guided bone regeneration around implant sites.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"25-32"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144007572","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}
{"title":"Comparison of Psychophysical and Neurophysiological Activities in Complete Denture Wearers and Implant Retained Overdenture Wearers: An In Vivo Study.","authors":"Ritu Saneja, Bappaditya Bhattacharjee, Ashish Verma, Romesh Soni, Ankita Singh, Pavan Kumar Dubey, Atul Bhatnagar","doi":"10.1615/JLongTermEffMedImplants.2025051715","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2025051715","url":null,"abstract":"<p><p>The present study aimed to evaluate degree of functional and physiological integration of dental implant used for implant retained overdenture and comparing these adaptive change with conventional complete denture in edentulous participants. The psychophysical method evaluated active tactile sensibility (ATS) threshold of sensory receptors of oral cavity and neurophysiological method assessed neurological changes with help of functional magnetic resonance imaging (fMRI) during mastication in participants of both the groups. Mann-Whitney U test was done to compare ATS threshold and activity of sensory cortex in fMRI before and after implant installation in completely edentulous participants. Statistical result showed significant increase (P < 0.001) in activation of sensory cortex, motor cortex, prefrontal cortex, temporal lobe in participants after wearing implant retained overdenture compared with complete denture. For 200, 100, and 80 μm articulating papers non-significant change found between two test groups. The 40 and 12 μm articulating papers showed statistically significant change in ATS threshold (P < 0.05) between two test groups in 12-14 weeks. ATS threshold decreased more in participants with Implant retained overdenture prosthesis as compared with conventional complete denture prosthesis. Most of the activation was seen in prefrontal cortex and bilateral somato-sensory cortex with implant retained prosthesis compared with conventional complete denture prosthesis.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"83-91"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143975599","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}
{"title":"Impact of Material and Design on the Mechanical Behavior of Implant-Supported Hybrid Fixed Prostheses.","authors":"Maha Al-Ghotmi, Elie E Daou","doi":"10.1615/JLongTermEffMedImplants.2024051394","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024051394","url":null,"abstract":"<p><p>Despite the favorable long-term outcomes reported with implants-prosthetic rehabilitations, biological and technical complications may be frequent. This review aimed to describe the different implant-supported hybrid prostheses, assessing the frameworks designs, materials, mechanical behavior, and prosthetic complications. A search was done using Medline/PubMed and Scopus databases from January 1985 to December 2022. The most relevant papers were selected for the review from the retrieved papers. Manual search for list of references was also added. Mechanical complications are not unique to metal-acrylic resin HPs and have been documented with other metal-based implant-supported reconstructions and zirconia frameworks. Prosthetic complications including ceramic veneer chipping and framework failures have been reported with ceramic veneered zirconia complete arch frameworks. The design, fabrication method, material and misfit of implant-supported frameworks significantly influence the rate of prosthetic complications associated with full-arch HPs.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"15-23"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996258","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}
{"title":"Influence of Microgeometry of Dental Implants on Inflammatory Mediators.","authors":"Pavithran Janagarathinam, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2025053252","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2025053252","url":null,"abstract":"<p><strong>Background: </strong>After implant installation, there is an immediate inflammatory reaction. Therefore, exploring the inflammatory mediators around different surface treated dental implants is essential for long term survival of implants. The goal of this study was to compare the levels of Tumor necrosis factor-α (TNF-α) and Interleukin-10 (IL-10) in patients with sandblasted acid-etched (SLA, SLActive) and anodized (TiUnite) dental implants.</p><p><strong>Materials and methods: </strong>In this prospective clinical study, 78 patients who had undergone implant placement for missing single posterior tooth in mandible using sandblasted acid-etched and anodized surface dental implants from September 2020 to January 2021 were enrolled according to strict inclusion and exclusion criteria and were categorized into Group 1: SLA (n = 27), Group 2: SLActive (n = 26), Group 3: TiUnite (n = 25) based on the surface modification of the implants. Utilizing an ELISA kit, the levels of TNF-α and IL-10 were measured in the peri-implant crevicular fluid (PICF) at 3 months and 1-year intervals and then subjected to statistical analysis.</p><p><strong>Results: </strong>Compared to groups 1 and 2, TNF-α was high and IL-10 level was less in implants from group 3 (p < 0.05). At baseline (p < 0.05) and the 1-year follow-up (p < 0.05), there was a statistically significant difference in TNF-α and IL-10 levels between the groups on pairwise comparison. Also, an intragroup comparison revealed that in all three groups, there was a statistically significant difference from the baseline (p < 0.05).</p><p><strong>Conclusion: </strong>Higher TNF-α and lower IL-10 levels in the peri-implant crevicular fluid was observed among patients with anodized dental implants as compared to sandblasted acid-etched dental implants.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"69-75"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996280","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}
{"title":"Intrusion of a Non-Splinted Tooth Surrounded by Free-Standing Dental Implants: A New Phenomenon.","authors":"Gauri Shahi, Gayathri Krishnamoorthy","doi":"10.1615/JLongTermEffMedImplants.2024051823","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2024051823","url":null,"abstract":"<p><strong>Purpose: </strong>The popularity of dental implants as a solution for missing teeth continues to grow, and so do the challenges associated with them. The intrusion of a natural tooth adjacent to a non-splinted dental implant is one such challenge recently observed in implant prostheses. In this comprehensive review, we delve into several potential theories that could elucidate the reasons behind tooth intrusion adjacent to a lone-standing dental implant.</p><p><strong>Materials and method: </strong>The following search terms were used for the data search: (dental implant) AND (intrusion of natural tooth). Articles written only in the English language in PubMed, Scopus, and Embase databases ranging from 1987-2023 were scrutinized and only 6 articles were included in the review.</p><p><strong>Results: </strong>Freestanding implants surrounding the intruded teeth are an uncommon occurrence that can be caused by extremely tight proximal contacts that are below the height of the contour of adjacent implants. Given the absence of a periodontal ligament in implants, their response to pressure is limited, resulting in minimal movement. However, the tooth in between them could still undergo apical intrusion. The achievement of proper proximal contact of prostheses is crucial when a natural tooth is located between implant-supported prostheses. To restore the tooth's proper contours and proximal contacts, it's suggested that the proximal contacts first be relieved. This will allow the tooth to erupt again. Clinicians need to be aware of this phenomenon and should be ready to treat it if it occurs.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144005806","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}