The Journal of Indian Prosthodontic Society最新文献

{"title":"Evaluation and comparison of the scanning accuracy of three intraoral scanners for single crown, three-unit, and cross-arch fixed partial denture by three-dimensional digital superimposition technique and measurement of vertical marginal fit of three-dimensional-printed resin retainers: An in vitro study.","authors":"Mansi Dhiran, Ajay Sabane, Abhijit Ashok Patil, Arti Gachake, Darshana Mundhe, Rupali Patil","doi":"10.4103/jips.jips_248_26","DOIUrl":"https://doi.org/10.4103/jips.jips_248_26","url":null,"abstract":"<p><strong>Aim: </strong>This study aims to evaluate and compare the scanning accuracy of three IOSs and measuring the vertical marginal fit of three-dimensional (3D) printed resin retainers for single crown, three-unit, and cross-arch fixed partial denture situations.</p><p><strong>Settings and design: </strong>Comparative In Vitro Study.</p><p><strong>Materials and methods: </strong>A maxillary Nissin typodont with prepared abutments at #13, #23, #25, #27, and #16 served as the master model. A calibrated Shining 3D laboratory scanner provided the reference standard tessellation language (control). Each IOS generated six scans ( n = 6/scanner; 18 test scans). Trueness and precision were derived by best-fit superimposition in Geomagic Design X. Fifty-four single-unit, three-unit, and cross-arch retainers were 3D-printed. Vertical marginal discrepancy was measured at mid-buccal and mid-lingual sites using a digital stereomicroscope (×20).</p><p><strong>Statistical analysis used: </strong>One-way ANOVA with Tukey's post-hoc test was used for comparisons among scanners and prosthesis spans. Pearson's correlation was used to assess the relationship between trueness and marginal fit, and Chi-square test was used to assess clinical acceptability. A P value ≤0.05 was considered statistically significant.</p><p><strong>Results: </strong>3Shape TRIOS 3 showed the highest trueness (28.5 ± 5.2 µm) and precision (18.2 ± 3.1 µm), followed by Medit i700 and Shining 3D Aoralscan 3 ( P < 0.001). Marginal discrepancy was lowest with 3Shape TRIOS 3 (52.4 ± 6.5 µm) and increased with span. A positive correlation was found between trueness and marginal fit ( r = 0.82; P < 0.001). Clinical acceptability was 100%, 94.4%, and 77.8% for 3Shape TRIOS 3, Medit i700, and Shining 3D Aoralscan 3, respectively ( P = 0.041).</p><p><strong>Conclusion: </strong>All three scanners delivered clinically acceptable results; 3Shape TRIOS 3 yielded the highest accuracy and best marginal adaptation. Accuracy and marginal fit deteriorated as prosthesis span increased.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 4","pages":"378-388"},"PeriodicalIF":1.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115282","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":"Marginal and internal adaptation of monolithic computer-aided design and computer-aided manufacturing zirconia crowns and heat-pressed ceramic veneered zirconia crowns: An in vitro study.","authors":"Smruti Nanda, Mirna Garhnayak, Abhijita Mohapatra, Sangram Panda, Abhilash Mohapatra, Gopal Krishna Choudhury","doi":"10.4103/jips.jips_289_26","DOIUrl":"https://doi.org/10.4103/jips.jips_289_26","url":null,"abstract":"<p><strong>Aim: </strong>This study aimed to compare the marginal and internal adaptation of monolithic computer-aided design and computer-aided manufacturing (CAD/CAM) zirconia crowns and heat-pressed ceramic-veneered zirconia crowns fabricated using a standardized digital workflow.</p><p><strong>Settings and design: </strong>An in vitro laboratory study was conducted using standardized epoxy resin dies and zirconia crowns fabricated by two different laboratory workflows.</p><p><strong>Materials and methods: </strong>Twenty zirconia crowns were fabricated from a single STL dataset with a 50-µm cement space and divided into two groups ( n = 10): monolithic CAD/CAM zirconia (MZ) and bilayer heat-pressed ceramic-on-zirconia (PVZ). All crowns were fabricated on epoxy resin dies replicated from a CAD/CAM-milled stainless-steel master die. After cementation with glass ionomer cement under a controlled seating load of 50 N, the specimens were sectioned buccolingually. Marginal and internal gaps were measured using scanning electron microscopy at eight predetermined sites.</p><p><strong>Statistical analysis used: </strong>Data were evaluated for normality using the Shapiro-Wilk test. Intergroup comparisons were performed using the Mann-Whitney U-test, with statistical significance set at P < 0.05. Bonferroni adjustment was applied for exploratory multiple comparisons.</p><p><strong>Results: </strong>For the primary outcome, composite internal adaptation was lower in the monolithic CAD/CAM zirconia crown group than in the heat-pressed ceramic-veneered zirconia crown group (103.07 vs. 111.38 µm; P = 0.019), with a moderate effect size ( r = 0.53). Composite marginal adaptation did not differ significantly between the groups (88.90 vs. 95.73 µm; P = 0.226).</p><p><strong>Conclusion: </strong>Both fabrication workflows produced zirconia crowns with marginal and internal adaptations within clinically acceptable limits. Monolithic CAD/CAM zirconia crowns showed slightly smaller internal discrepancies than heat-pressed ceramic-veneered zirconia crowns; however, the magnitude of this difference is unlikely to affect clinical seating or cementation.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 4","pages":"397-404"},"PeriodicalIF":1.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115310","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":"Interobserver reliability and temporal variability of artificial intelligence chatbots in Kennedy-classified removable partial denture design: A cross-sectional analysis.","authors":"Shady M El Naggar, Ahmed M Esmat, Eman G Helal, Maie F Khalil, Ayman M Gouda","doi":"10.4103/jips.jips_182_26","DOIUrl":"https://doi.org/10.4103/jips.jips_182_26","url":null,"abstract":"<p><strong>Aims: </strong>This study aimed to investigate the consistency of ratings, the quality of chatbot-generated removable partial denture (RPD) designs, and the repeatability of chatbot outputs over time through standardized Kennedy classification-based RPD design prompts.</p><p><strong>Settings and design: </strong>This study used a cross-sectional design to test the consistency of four AI chatbots among raters (ChatGPT; GPT-4; OpenAI, Copilot 1.25062.106.0; Microsoft, AI Chat-AI language model; DeepAI, Claude AI; Claude 3 Opus; Anthropic) on RPD design for 80 virtual Kennedy-classified cases (40 maxillary/40 mandibular).</p><p><strong>Materials and methods: </strong>Eighty partially edentulous virtual cases (Class I, I Mod 2, II, II Mod 1, II Mod 2, III Mod 1, III Mod 2, and IV) were assigned to AI chatbots. Each case was randomly assessed three times daily, resulting in 960 responses evaluated. Four removable prosthodontists scored responses using a modified global quality score based on a five-point Likert scale.</p><p><strong>Statistical analysis used: </strong>Statistical analyses used the intraclass correlation coefficient (ICC) and two-way Analysis of variance ANOVA ( P ≤ 0.05). Interobserver reliability was measured using the ICC, technical quality was compared with an expert consensus reference standard, and repeated-measures ANOVA demonstrated significant temporal variation in chatbot outputs.</p><p><strong>Results: </strong>All chatbots showed excellent interobserver reliability (ICC >0.90), but the resulting RPD designs had lower scores compared with the expert gold reference standards. Repeated-measures analysis indicated significant intra-rater variability across all chatbots ( P < 0.001), suggesting lower repeatability.</p><p><strong>Conclusions: </strong>AI chatbots showed excellent interobserver reliability but limited technical quality and temporal stability in the RPD framework design. ChatGPT (GPT-4; OpenAI) performed best, but all models still need expert supervision and further optimisation before use.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 4","pages":"362-369"},"PeriodicalIF":1.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115226","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":"Digital versus conventional complete dentures: A randomized controlled pilot study of short-term patient satisfaction and quality of life within a mobile dental service setting.","authors":"Chaimongkon Peampring, Phatootip Henprasert","doi":"10.4103/jips.jips_62_26","DOIUrl":"https://doi.org/10.4103/jips.jips_62_26","url":null,"abstract":"<p><strong>Aim: </strong>Conventional complete denture (CD) fabrication requires multiple appointments, posing barriers for remote elderly patients.This study compared oral health-related quality of life (OHRQoL) and patient satisfaction between digitally fabricated dentures (DD) and conventional methods within the Royal Mobile Dental Services in Thailand.</p><p><strong>Settings and designs: </strong>In this prospective randomized trial, 30 edentulous participants (aged 50-80 years) were allocated to CD ( n = 15) or DD ( n = 15) groups; 25 participants (CD: n = 15, DD: n = 10) completed the 1.5-month evaluation.</p><p><strong>Materials and methods: </strong>The CD protocol used a four-visit, heat-polymerized workflow. The DD protocol used a three-visit workflow with mucostatic intraoral scanning and three-dimensional (3D) printing dentures. Participants and outcome assessors were blinded.</p><p><strong>Statistical analysis used: </strong>Outcomes were assessed after the first meal, at 24 h, and at 1.5 months using a Visual Analog Scale (VAS) for satisfaction and the Oral Health Impact Profile-14 for OHRQoL. Data were analyzed using Mann-Whitney U -tests.</p><p><strong>Results: </strong>Overall VAS satisfaction showed no significant intergroup differences ( P > 0.05). At 24 h, the DD group reported significantly higher negative impacts ( P < 0.05) on phonetics, taste perception, and food avoidance. By 1.5 months, most OHRQoL dimensions in the DD group normalized to match the CD group, but phonetic difficulties remained significantly higher ( P < 0.05).</p><p><strong>Conclusion: </strong>3D-printed dentures offer satisfaction comparable to conventional methods while reducing clinical visits. Early functional limitations resolve rapidly, but persistent phonetic issues suggest that standardized computer-aided design protocols may benefit from patient-specific customization to optimize speech outcomes in mobile dental settings.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 4","pages":"323-330"},"PeriodicalIF":1.3,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149115184","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":"Assessment of swallowing and suprahyoid muscle activity in completely edentulous patients before and after rehabilitation with complete dentures.","authors":"Abinaya Saravanan, Kasim Mohamed, Karthigeyan Jeyapalan","doi":"10.4103/jips.jips_69_26","DOIUrl":"10.4103/jips.jips_69_26","url":null,"abstract":"<p><strong>Aim: </strong>To assess swallowing status using jaw opening force (JOF) and the electromyographic (EMG) activity of the suprahyoid muscles during swallowing in complete denture patients before and after rehabilitation.</p><p><strong>Setting and design: </strong>The Study design was a prospective clinical study conducted at Sri Ramachandra Dental College and Hospital, Chennai, Tamilnadu.</p><p><strong>Materials and methods: </strong>The study participants included 30 completely edentulous patients. Removable complete dentures were fabricated for all the participants. JOF and surface EMG activity of the suprahyoid muscles were evaluated. The JOF was evaluated for all participants using an instrument called an extraoral forcemeter. The patients were recalled for review and the investigations were done at three time intervals: before insertion of complete dentures(T1), 1 week after insertion of complete dentures(T2), and 3 months after insertion of complete dentures (T3). During the postinsertion evaluation period (T2 and T3), the patients were evaluated with and without the complete dentures.</p><p><strong>Statistical analysis used: </strong>The JOF and EMG activity at 1 week and 3 months (with and without dentures) were analyzed using a paired t test and independent t test, respectively. The JOF and EMG activity at baseline, 1 week, and 3 months (with and without dentures) considering gender were analyzed using mixed design repeated measures ANOVA followed by adjustment for multiple pairwise comparisons using Bonferroni test. Bivariate correlation was performed between JOF and EMG activity using Pearson's correlation.</p><p><strong>Results: </strong>Multiple pairwise comparisons of JOF and EMG between various intervals (T1, T2, and T3) with or without wearing the denture revealed that the mean difference was found to be statistically significant ( P < 0.05) for JOF and EMG values. The mean difference between genders at various time points was statistically insignificant for JOF both with ( P = 0.182) and without dentures ( P = 0.082) but was statistically significant ( P < 0.05) for EMG values with and without dentures. Pearson's correlation coefficient analysis revealed a positive linear correlation.</p><p><strong>Conclusion: </strong>Rehabilitation of completely edentulous patients with complete dentures will have a significant effect on the suprahyoid muscle activity thus improving their swallowing function. JOF measurements may serve as a useful adjunctive parameter for evaluating swallowing function in the clinical settings, further studies with dedicated diagnostic validation are required.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"260-266"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436894/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369891","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Assessment of psychosocial reintegration following prosthetic rehabilitation using Psychosocial Impact of Assistive Devices Scale: A case series.","authors":"Unnati Gedam, Uday Kiran Uppada","doi":"10.4103/jips.jips_27_26","DOIUrl":"10.4103/jips.jips_27_26","url":null,"abstract":"<p><strong>Background: </strong>Loss of facial structures due to trauma, congenital anomalies, or ablative surgery induces profound psychosocial consequences that impact beyond functional impairment. While rehabilitation with advanced prosthetic materials have improved esthetics and comfort, standardized measurement of psychosocial outcomes remains limited.</p><p><strong>Aim: </strong>To assess psychosocial reintegration following maxillofacial prosthetic rehabilitation using a modified Psychosocial Impact of Assistive Devices Scale (PIADS-10) and to support the findings through a focused review of the literature.</p><p><strong>Materials and methods: </strong>A case series of five patients who reported with maxillofacial defects as a result of trauma and ablative surgery rehabilitated with customized orbital and ocular prosthesis were evaluated. A PIADS-10, adaptation tailored to maxillofacial prosthesis was recorded pre rehabilitation and 4 weeks postrehabilitation. The changes across competence, adaptability, and self-esteem domains were analyzed.</p><p><strong>Results: </strong>The prerehabilitation PIADS scores showed substantial negative psychosocial impact particularly in self-confidence, perceived appearance, social participation, and ease of daily activities. It was observed that following prosthetic rehabilitation all the domains showed a positive shift, with greatest scores in social participation (+3), satisfaction with facial expression (+3), and overall quality of life (+3).</p><p><strong>Conclusion and clinical relevance: </strong>Customized maxillofacial prosthetic rehabilitation yields significant benefits as evident with the PIADS-10 noted in this study. Incorporating structured PROMs supports patient-centered care and strengthens the evidence for prosthetic interventions.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"308-313"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436906/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Association of menopausal status and genetic polymorphisms with early crestal bone loss around dental implants: A prospective observational study.","authors":"Kaushal Kishor Agrawal, Prachi Goel, Husbana Bakrolwala","doi":"10.4103/jips.jips_588_25","DOIUrl":"10.4103/jips.jips_588_25","url":null,"abstract":"<p><strong>Aim: </strong>Menopause associated estrogen deficiency affects bone metabolism and may increase peri implant bone resorption. Genetic polymorphisms in inflammatory and bone related genes may further influence implant outcomes. This study evaluated the association between gene polymorphisms and peri implant early crestal bone loss (ECBL) in premenopausal and postmenopausal females.</p><p><strong>Setting and design: </strong>This was a prospective observational clinical study conducted at a tertiary care government institution.</p><p><strong>Materials and methods: </strong>The study included 146 female patients (73 premenopausal and 73 postmenopausal), each receiving a single mandibular posterior dental implant. Menopausal status was confirmed using medical history and serum estradiol quantification. A standardized two stage protocol was followed for implant placement. Cone beam computed tomography based measurements of ECBL were performed at baseline and 6 months. Genotyping of interleukin 1 alpha (IL1A 889), interleukin 1 beta (IL1B 3954) and IL1B 511, IL6 572, collagen type I alpha 1 (COL1A1), and bone gamma carboxyglutamate protein (BGP) (osteocalcin) polymorphisms was performed using real time PCR.</p><p><strong>Statistical analysis used: </strong>Data were analyzed using IBM SPSS Statistics software (version 26.0). Chi-square test, unpaired t-test, Mann-Whitney U test, and univariate binary logistic regression analysis were applied.</p><p><strong>Results: </strong>Final analysis included 141 women (69 premenopausal and 72 postmenopausal). Postmenopausal females had significantly higher body mass index and lower bone mineral density ( P < 0.05). Mean ECBL was significantly greater in postmenopausal females (1.20 ± 0.78 mm) than in premenopausal females (0.65 ± 0.51 mm; P < 0.001), with critical ECBL (>0.5 mm) observed in 84.7% and 44.9% of participants, respectively. No genetic associations were identified in premenopausal females. In postmenopausal females, IL1A 889 AG (odds ratio (OR) = 7.75; P = 0.044) and IL6 572 CC genotypes (OR = 8.96; P = 0.045) were significantly associated with critical ECBL.</p><p><strong>Conclusion: </strong>Postmenopausal females exhibited significantly greater ECBL around dental implants, and IL1A 889 and IL6 572 polymorphisms showed a significant association with increased ECBL. These findings highlighted the influence of IL1A 889 and IL6 572 gene polymorphisms on early peri implant bone remodeling in postmenopausal females.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"252-259"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436876/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impact of biomaterials on intra-sinus bone changes around dental implants following indirect sinus augmentation: A randomized clinical trial.","authors":"Mallikarjuna Ragher, Sanath Kumar Shetty, Rajesh Shetty, M Hasan Sarfaraz, M Sunaina, Nafiya Abdul Aziz","doi":"10.4103/jips.jips_25_26","DOIUrl":"10.4103/jips.jips_25_26","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Aim: &lt;/strong&gt;This study aimed to evaluate and compare the effect of different biomaterials - without graft, venous blood, injectable platelet-rich fibrin (i-PRF), and synthetic graft on peri-implant intra-sinus bone changes around dental implants following indirect sinus lift using the Crestal Approach Sinus Kit (CAS Kit), assessed three-dimensionally using cone-beam computed tomography (CBCT) at baseline and after 6 months.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Settings and design: &lt;/strong&gt;A randomized clinical trial was conducted at the Department of Prosthodontics, involving 64 patients aged 18-60 years with residual crestal bone height of 4-6 mm.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Materials and methods: &lt;/strong&gt;Sixty-four participants were randomly allocated into four groups ( n = 16 each): without graft, venous blood, i-PRF, and synthetic graft using a computer-generated randomization sequence prepared by an independent investigator. Allocation was concealed by sequentially numbered, opaque, sealed envelopes. Indirect sinus lift was performed using the CAS kit, and implants were placed simultaneously via a crestal approach. Intra-sinus peri-implant bone changes at the implant apex and at the buccal and palatal aspects (apex, middle, and sinus floor levels) were assessed using CBCT at baseline and after 6 months. Implant survival was evaluated as a secondary outcome. Descriptive statistics (mean ± standard deviation) were calculated, and intergroup comparisons were performed using the one-way analysis of variance. Statistical significance was set at P &lt; 0.05.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Statistical analysis used: &lt;/strong&gt;Descriptive statistics (mean±SD) were calculated, and intergroup comparisons were performed using one-way ANOVA. Statistical significance was set at P &lt; 0.05.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;In coronal sections, Groups 1 and 2 (without graft, venous blood) showed minimal and comparable bone gain. Group 3 (i-PRF) demonstrated moderate improvement, while Group 4 (synthetic graft) achieved the highest bone values, particularly at the apex, buccal-apical, and palatal-apical sites. Analysis confirmed that Group 4 significantly outperformed all others, and i-PRF consistently exceeded without graft and venous blood. Sagittal analysis showed a similar pattern: Groups 1 and 2 displayed negligible change, Group 3 had intermediate gains, and Group 4 demonstrated substantial bone formation, especially at mesial and distal apical sites. No implants were lost during the 6-month follow-up.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;Synthetic grafts demonstrated the greatest intra-sinus bone gain at 6 months. This increased bone formation may enhance apical bone support and potentially improve implant stability in cases with limited residual bone height. I-PRF showed moderate bone gain, which, although statistically inferior to synthetic grafts, may still be clinically beneficial as a cost-effective and autologous adjunct. Thus, while synthetic grafts provided the highest statistical and cli","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"215-222"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436873/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148370117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparative evaluation of 2-step and 3-step polishing systems on the surface roughness and flexural strength of lithium disilicate: An in vitro study.","authors":"Rawan Abdullah Suliman Alrethia, Meshal Mohamed Suliman Alghofaili, Moataz Mohamed Amin Barakat, Vaibhav Awinashe, Ashwini Komalan, Abdullah Abdulaziz Alhablen","doi":"10.4103/jips.jips_608_25","DOIUrl":"10.4103/jips.jips_608_25","url":null,"abstract":"<p><strong>Aim: </strong>The aim of this in vitro study was to investigate the effects of 2-step and 3-step polishing systems on the surface roughness and biaxial flexural strength of lithium disilicate ceramics after grinding.</p><p><strong>Settings and design: </strong>Thirty-two 14 x 1.25 mm lithium disilicate (IPS e.max CAD) discs were divided into four groups ( n = 8): control (unmodified), ground-unpolished, ground-3-step polished (Shofu Zil Master), and ground-2-step polished (Toboom). A profilometer was used to quantify the surface roughness (Ra, µm), and ISO 6872 was followed to calculate the biaxial flexural strength (MPa).</p><p><strong>Materials and methods: </strong>A profilometer was used to quantify the surface roughness (Ra, µm), and ISO 6872 was followed to calculate the biaxial flexural strength (MPa) of all the samples.</p><p><strong>Statistical analysis used: </strong>The data were analyzed through the IBM SPSS Statistics software package (Version 25.0). One-way Analysis of Variance (ANOVA) was used to check variations among the groups followed by the Tukey's post hoc test (α=.05).</p><p><strong>Results: </strong>There were significant differences between the groups in both flexural strength and surface roughness ( P <.001). As compared to the control, the 3-step system (0.43 ± 0.21 µm) provided smoother surfaces than the 2-step system (0.78 ± 0.34 µm). The control group (1696.8 ± 486.9 MPa) and the 3-step group (1500.0 ± 306.2 MPa) had the highest flexural strength, whereas the 2-step group (951.3 ± 121.2 MPa) had the lowest values.</p><p><strong>Conclusions: </strong>The flexural strength and surface roughness of ground lithium disilicate were enhanced by both polishing systems; however, the 3-step system performed better and produced outcomes that were on par with unaltered ceramics.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"238-244"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436890/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148369877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Longitudinal assessment of cytotoxicity and cytomorphological changes in buccal mucosa exposed to dental laboratory chemicals.","authors":"Savita Dandekeri, Kriti Shankar, Mallikarjuna Ragher, Rajesh Shetty, Ashwini Prabhu, Sanath Shetty","doi":"10.4103/jips.jips_23_26","DOIUrl":"10.4103/jips.jips_23_26","url":null,"abstract":"<p><strong>Aim: </strong>To assess the cytotoxicity and cytomorphological changes in the buccal mucosa cells of 1st year dental students (DS) and dental technicians (DTs) upon exposure to laboratory chemicals.</p><p><strong>Settings and design: </strong>This observational longitudinal cohort and cross-sectional study was conducted at the Department of Prosthodontics, Yenepoya Dental College, Mangaluru, Karnataka, India.</p><p><strong>Materials and methods: </strong>The study involved a total of 45 participants: DT Group (n=15), DS Group (n=15), and Control Group (CG) (n=15). Cytotoxicity and cytomorphological alterations were assessed using the buccal mucosa cytome assay among all three groups. The 1st year DSs were followed up longitudinally for 18 months at three time intervals (T0, T1, and T2).</p><p><strong>Statistical analysis used: </strong>Kruskal-Wallis H-test and Mann-Whitney U-test were used for intergroup comparisons. Friedman ANOVA was used for longitudinal comparison within the DS group. Statistical significance was set at P < 0.05.</p><p><strong>Results: </strong>Kruskal-Wallis H-test showed a statistically significant difference in micronuclei frequency among the DT group, DS group, and CG. The DT group showed the highest micronuclei and karyolytic cell frequency, followed by the DS group and CG. Friedman analysis of variance test showed a statistically significant increase in micronuclei frequency in DSs when followed up at T0 (beginning of the course), T1 (after 12 months), and T2 (after 18 months).</p><p><strong>Conclusion: </strong>Cytotoxicity was highest in the buccal mucosa of DTs, followed by DSs and CG. First-year DSs showed a progressive increase in cytotoxicity with increasing duration of exposure. Dental laboratories should have effective ventilation systems and dental personnel should strictly follow personal protective equipment guidelines to minimize exposure to laboratory chemicals.</p>","PeriodicalId":22669,"journal":{"name":"The Journal of Indian Prosthodontic Society","volume":"26 3","pages":"267-274"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13436871/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148370114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}