Divyansh Sinha, R Sharmila, Subhabrata Maiti, Jessy Paulraj
{"title":"CAD/CAM Surgical Guide for Virtual Implant Planning and Placement: A Review.","authors":"Divyansh Sinha, R Sharmila, Subhabrata Maiti, Jessy Paulraj","doi":"10.1615/JLongTermEffMedImplants.2025038533","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2025038533","url":null,"abstract":"<p><p>A dental implant is a surgical fixture that is placed into the jawbone and allowed to fuse with the bone over the span of a few months. It acts as an alternative for a lacking teeth.The implant surgical guide comprises a teeth formed contour which stimulates natural teeth and prosthesis. Dental implants preserve the bone that results in loss of jaw height and appearance of aging.The prefabricated dental implant can be used to locate single implants or couple of implants in a continuous manner permitting verification of implant site, angulation and rotational positions prior to the implant placement and thereby allowing more esthetic, functional and stable prosthesis. CAD/CAM has been used for decades in restorative dentistry and have improved its software in implant dentistry. Surgical guide plays an important role in optimal positioning and angulation of implants. Surgical guides have not only reduced the chances of damage to anatomic landmarks but also increased the esthetic. Guided surgery is a complete treatment concept for diagnosis, treatment planning and placement of implants with high accuracy. The main aim of this review is to know the importance, accuracy and advantages of CAD/CAM surgical guide for virtual implant placement.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 3","pages":"11-21"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760312","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":"Therapeutic Potential of Thymoquinone in Conjunction with Mechanical Debridement for Peri-Implantitis: A Prospective Clinical Evaluation.","authors":"Arunraaj Thanasekaran, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2025058363","DOIUrl":"10.1615/JLongTermEffMedImplants.2025058363","url":null,"abstract":"<p><p>Dental implants offer a reliable solution for tooth replacement, but peri-implant diseases, especially peri-implantitis, jeopardize long-term success by causing inflammation and bone loss. Mechanical debridement is the primary treatment, though its effectiveness is limited by the complex implant surface. Adjunct therapies, particularly natural bioactive compounds, like thymoquinone from Nigella sativa, have shown promise in improving treatment outcomes due to their antimicrobial, anti-inflammatory, and regenerative properties. The aim of this study was to assess the clinical efficacy of locally applied thymoquinone gel combined with mechanical debridement in treating peri-implantitis. This prospective study included 40 participants with peri-implantitis, randomized into two groups. Group 1 received mechanical debridement alone, while Group 2 received debridement with 0.2% thymoquinone gel. Clinical parameters, including plaque index (PI), gingival index (GI), peri-implant probing depth (PPD), and clinical attachment level (CAL), were measured at baseline and after 3 months. Statistical analysis was performed using paired and independent t-tests. At the 3-month follow-up, Group 2 showed significantly better outcomes in PI (0.50 ± 0.20), GI (0.62 ± 0.11), PPD (3.02 ± 0.14 mm), and CAL (3.17 ± 0.31 mm) compared to Group 1 (p < 0.05). Thymoquinone gel as an adjunct to mechanical debridement significantly improves peri-implantitis management, offering a promising therapeutic option. Further studies with longer follow-up are needed to confirm its long-term effectiveness.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 3","pages":"37-43"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760317","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":"Osteogenic Potential of Sr/Zn-Doped Nano Hydroxyapatite Coated Dental Implants: A Systematic Review.","authors":"Meghan Ranjan Singh, Saravanan Sekaran, Revathi Duraisamy, Suresh Bhat Venugopalan, Dhanraj Ganapathy","doi":"10.1615/JLongTermEffMedImplants.2025057782","DOIUrl":"10.1615/JLongTermEffMedImplants.2025057782","url":null,"abstract":"<p><p>A novel approach to augmenting the osteogenic properties of nano-hydroxyapatite (nHA) is doping it with bioactive ions such as strontium (Sr) and zinc (Zn). The incorporation of Sr and Zn into the nano-hydroxyapatite structure enhances its bioactivity, providing a more favorable environment for osteogenesis. The aim of this review is to evaluate the osteogenic potential of Sr/Zn-doped nano-hydroxyapatite coatings on dental implants, focusing on their effects on osseointegration and bone regeneration. A comprehensive literature search was conducted to identify relevant studies. The following databases were systematically searched: PubMed, Scopus, Web of Science, Embase, and the Cochrane Library through September 2024. The search was designed to capture a wide range of studies from biomedical, clinical, and materials science. This systematic review initially identified 16 studies, with 6 excluded after screening for relevance. Of the 10 remaining, one was further excluded for not meeting criteria. Nine studies were included in the final analysis, out of which 4 were animal studies and 5 were in vitro studies but heterogeneity prevented a meta-analysis. Data extraction focused on study details, mechanisms, in vitro and in vivo results, and conclusions. Results indicated that Sr/ Zn-doped nHA plasma-sprayed coatings on titanium dental implants significantly enhance osteogenic potential. The collective evidence from the relevant studies shows that the benefits of Sr/Zn-doped HA materials for biomedical applications are multifaceted. They have demonstrated significant improvements in bioactivity, osseointegration, osteogenesis, antibacterial properties, and mechanical performance, making them promising candidates for a range of orthopedic, dental, and cranial implants.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 4","pages":"21-35"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145488978","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}
Saeid Saeidyan, Sahithya Sakhamuri, Ashley Tai, Guadalupe Zelaya, Elbert Tom, Andrew Giordano, Shanaya Puri, Ram M Vaderhobli
{"title":"Reusing Impression Copings.","authors":"Saeid Saeidyan, Sahithya Sakhamuri, Ashley Tai, Guadalupe Zelaya, Elbert Tom, Andrew Giordano, Shanaya Puri, Ram M Vaderhobli","doi":"10.1615/JLongTermEffMedImplants.2025057868","DOIUrl":"10.1615/JLongTermEffMedImplants.2025057868","url":null,"abstract":"<p><p>Implant dentistry is a rapidly evolving field where cost efficiency and sustainability are becoming increasingly important considerations. The rising cost of implant components, such as impression copings, healing abutments, and cover screws, has led clinicians to consider their reuse as a means to reduce expenses and minimize material waste in dental practice. These components, traditionally designated for single use, are crucial in ensuring implant accuracy and patient safety. Various systematic reviews evaluate the reuse of dental impression copings, healing abutments, and cover screws in implant dentistry, a practice gaining attention due to the rising costs of implant components. Publications from the last ten years in the PubMed database were analyzed, with a focus on resterilization efficacy, accuracy of reuse, and reported biological or mechanical consequences. Out of 30 articles reviewed, 17 met the criteria for final analysis. Findings suggest mixed evidence on clinical success rates and safety, with notable considerations for cost-effectiveness and sustainability. This review provides an evidence-based assessment of the viability and potential implications of reusing these components in clinical practice. This review also addresses this gap by evaluating the literature on the reuse of these components, focusing on biological safety, mechanical integrity, accuracy, cost-effectiveness, and sustainability.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 4","pages":"37-42"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145489078","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}
Andrew Couture, Karen J Derefinko, Marcus C Ford, John R Crockarell, James L Guyton, James W Harkess, Christian Roberts, William M Mihalko
{"title":"Smoking Cessation and Relapse Effects on Patient-Reported Outcomes after Total Knee Arthroplasty.","authors":"Andrew Couture, Karen J Derefinko, Marcus C Ford, John R Crockarell, James L Guyton, James W Harkess, Christian Roberts, William M Mihalko","doi":"10.1615/JLongTermEffMedImplants.2025055608","DOIUrl":"https://doi.org/10.1615/JLongTermEffMedImplants.2025055608","url":null,"abstract":"<p><p>Smoking is a risk factor for poor outcomes after total knee arthroplasty (TKA). The purpose of this study was to identify factors that could be modified to increase smoking abstinence and prevent relapse in these patients that would hopefully lead to more satisfactory outcomes. It involved a retrospective analysis of medical records and a survey of 200 patients (100 preoperative smokers and 100 preoperative nonsmokers) who underwent TKA at a single institution between 2018 and 2021. Ages ranged from 28 to 86 years old (mean 65.20). Nonsmokers were slightly older than smokers (67.59 vs. 62.82, respectively). Medical records of the preoperative nonsmokers were reviewed to obtain their postoperative Knee Injury and Osteoarthritis Outcome Score for Joint Replacement (KOOSJR) and demographic data. Based on KOOSJR scoring, preoperative nonsmokers had significantly better outcomes compared with preoperative smokers. Nonsmokers had significantly lower overall KOOSJR total scores compared with smokers (P = 0.016). Nonsmokers also demonstrated higher overall knee health than smokers as shown by the KOOSJR converted score and performed better in terms of functional movements. We concluded that nonsmokers have better outcomes than smokers after TKA, as they experienced less pain from movement and better knee health. Smoking-cessation interventions should be implemented both before and after surgery to improve outcomes and prevent smoking relapse.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 3","pages":"71-75"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144760316","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}
Shervin Hejazi, Rahab Ghoveizi, Aziz Goshaderoo, Sara Tavakolizadeh
{"title":"Effect of Different Restorative Materials on Stress Distribution around Dental Implants.","authors":"Shervin Hejazi, Rahab Ghoveizi, Aziz Goshaderoo, Sara Tavakolizadeh","doi":"10.1615/JLongTermEffMedImplants.2024051000","DOIUrl":"10.1615/JLongTermEffMedImplants.2024051000","url":null,"abstract":"<p><p>The purpose of this study was to evaluate the amount and distribution of stress in the implant-supported fixed partial dentures and the surrounding bone in six different models by computer-simulated mastication. Finite element analysis was used to conduct the study. The three-dimensional (3D) model of a 3-unit implant-supported fixed partial denture was created. Six different material combinations were nominated. Full zirconia crown (ZZT), zirconia framework with feldspathic veneer (FZT), full lithium disilicate crown (LLT), lithium disilicate framework and feldspathic veneer (FLT), Ni-Cr framework with feldspathic porcelain veneer (NiCrT), full hybrid ceramic (HHT) and also a type 3 bone was created. The oblique load (534 N) and the horizontal load (76.5 N) were applied on the bridge, and stress values and distribution patterns were examined. The distribution pattern was the same in all the models. The full zirconia crown (ZZT) showed the highest stress values in the bone in both the oblique and the horizontal forces. The highest concentration was around the fixture on the surface of the bone in the cervical area. This study showed that restoration material of the fixed partial dentures does not affect the pattern and the location of maximum and minimum stress concentration. However, as expected, the magnitude of stress values can be changed by switching restoration materials.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"35 2","pages":"61-68"},"PeriodicalIF":0.0,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144025163","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":"Relationship between Impacted Mandibular Third Molars and the Mandibular Canal on CBCT Scans.","authors":"Yaser Safi, Mahkameh Moshfeghi, Mitra Ghazizadeh Ahsaie, Maryam Zameni, Seyed Ahmadreza Sahafi","doi":"10.1615/JLongTermEffMedImplants.2022042569","DOIUrl":"10.1615/JLongTermEffMedImplants.2022042569","url":null,"abstract":"<p><p>This study aimed to assess the relationship of impacted mandibular third molars with the mandibular canal on cone beam computed tomography (CBCT) scans. This cross-sectional study was conducted on CBCT scans of 137 patients with 204 impacted mandibular third molars. The relation of age, gender, class of impaction, anatomical position of canal relative to tooth (buccal, lingual, inferior, inter-radicular), tooth angulation (mesioangular, vertical, distoangular, horizontal), relationship of tooth with the mandibular canal (no contact, in contact, relation), relationship of tooth with the mandibular cortex, anatomical site of contact of tooth with the mandibular cortex (buccal, lingual, inferior), and the impression of canal (grooving, no effect) on impacted teeth were evaluated. Data were analyzed using one-way ANOVA, Chi-square test and Fisher's exact test. Class B of impaction (78.9%), inferior position of canal relative to the impacted tooth (53.9%) and mesioangular angulation (53.4%) had the highest frequency, respectively. The relationship of tooth with the mandibular canal was \"relation\" in most cases (53.4%) followed by no contact (26.9%) and in contact (19.6%). Significant associations were noted between depth of impaction (P < 0.001), tooth angulation (P = 0.024), anatomical position of canal relative to tooth (P < 0.001), relationship of tooth with the mandibular cortex (P = 0.032) and anatomical site of contact of tooth with the mandibular cortex (P = 0.013) with the impacted tooth-mandibular canal relationship. CBCT provides accurate information about the relationship of impacted third molars with the mandibular canal and can decrease the risk of traumatization of inferior alveolar nerve (IAN) during their surgical extraction.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"1 1","pages":"65-74"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67611588","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":"High Survivorship of Hybrid Fixation Technique in Aseptic Condylar Revision Total Knee Arthroplasty with Minimal Metaphyseal Bone Loss: 5-10 years Clinical Outcomes","authors":"H. Matar, R. Bawale, J. Gollish","doi":"10.1615/jlongtermeffmedimplants.2023047031","DOIUrl":"https://doi.org/10.1615/jlongtermeffmedimplants.2023047031","url":null,"abstract":"The aim of this study was to evaluate the outcomes of hybrid fixation technique in aseptic condylar revision total knee arthroplasty (rTKA). A retrospective consecutive study of patients with minimal metaphyseal bone loss who underwent aseptic rTKA with press-fit cementless femoral stems and short cemented tibial stems. Primary outcome measure was mechanical failure. Surgical complications, reoperations and revision for any cause were collected and Knee society score at final follow-up. Kaplan-Meier survival curves were used to estimate implant survivorship. Seventy-three patients were included with minimum 5 years follow-up with a mean age of 74.5 years. At mean follow-up of 8.5 years (range 5-10), only two patients required revision, both for infection. Radiographic evaluation was undertaken for all remaining patients at final follow-up and showed no evidence of mechanical failure. Six patients (8.4%) showed non-progressive radiolucent lines around the cementless femoral stem with only one having a pedestal at the tip of the femoral stem and four patients (5.6%) showed non-progressive radiolucent lines around the cemented tibial stem. Mean KSS score was 80.6 (standard deviation 13.8) indicating satisfactory clinical outcomes. Using \"any cause implant revision\" as an end point, implant survivorship for this construct was 97.3% at mean 8.5 years. In our experience, a hybrid fixation technique with a press-fit cementless femoral stem and a short-cemented tibial stemmed construct achieves excellent medium- to long-term outcomes in aseptic condylar revision cases with minimal metaphyseal bone loss.","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"1 1","pages":"41-47"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67611791","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":"Correlation of C-Reactive Protein and Severity of Peri-Implant Diseases.","authors":"Rajasri Pradeep, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2023047347","DOIUrl":"10.1615/JLongTermEffMedImplants.2023047347","url":null,"abstract":"<p><p>Peri-implant disease pathogenesis is similar to periodontal disease pathogenesis resulting in production of pro-inflammatory mediators. These mediators are released during the inflammation phase, among which C-reactive protein (CRP) is one of the acute phase reactants. The aim of the study was to correlate the levels of CRP with the severity of peri-implant diseases. The present observational study was carried out from June 2022 to December 2022 in the Department of Implantology, Saveetha Dental College and Hospitals, Chennai, India. A total of 60 patients with peri-implant health (n = 20), peri-mucositis (n = 20) and peri-implantitis (n = 20) were enrolled. Unstimulated salivary samples were collected and subjected to latex agglutination assay for CRP analysis. CRP levels were then correlated with severity of peri-implant diseases. The mean CRP level in peri-implant health, peri-implant mucositis, peri-implantitis were 0.25 ± 0.36 mg/dl, 3.56 ± 0.85 mg/dl and 5.07 ± 0.74 mg/dl, respectively. Pearson correlation coefficient analysis revealed a strong positive correlation between CRP and peri-implant parameters suggesting that the CRP level increased as the severity of peri-implant disease increased. CRP level increases with severity of peri-implant diseases and there exists a positive correlation between CRP level and peri-implant parameters. Therefore, CRP can be used as a diagnostic marker for peri-implant diseases.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"1 1","pages":"75-78"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67612287","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 Alveolar Bone Level around Osseointegrated Dental Implants among Premenopausal and Postmenopausal Women: A 2-Year Study.","authors":"J Dhayanithi, Arvina Rajasekar","doi":"10.1615/JLongTermEffMedImplants.2023047432","DOIUrl":"10.1615/JLongTermEffMedImplants.2023047432","url":null,"abstract":"<p><p>The success of dental implants is affected by bone quality and quantity at the dental implant site. The present study was done to assess the changes in alveolar bone level around osseointegrated dental implants over a period of 2 years among the premenopausal and postmenopausal women. This prospective clinical study was conducted among 50 female patients who reported between January 2020-June 2020 and had a single missing molar in maxillary or mandibular arch. Patients were categorized into 2 groups: premenopause patients (Group A; n = 25) and postmenopause patients (Group B; n = 25). Marginal bone loss (MBL) was recorded at baseline, 12 mo and 24 mo follow-up and compared between both the groups using independent t-test. ANOVA was done to compare MBL between different time periods. On intragroup comparison, a statistically significant difference was observed between different time periods in both Group A (P = 0.05) and Group B (P = 0.04). Also, on intergroup comparison, a statistically significant difference was observed in Group B from Group A at 12 mo and 24 mo (P < 0.05). Increase in marginal bone loss was observed among postmenopausal women. Therefore, clinicians should emphasize the need for oral hygiene maintenance among postmenopausal women for peri-implant health.</p>","PeriodicalId":16125,"journal":{"name":"Journal of long-term effects of medical implants","volume":"1 1","pages":"89-92"},"PeriodicalIF":0.0,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67612580","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}