Aim: This retrospective study investigated the survival rate and clinical performance of space maintainers fitted in 50 patients aged from 6-11years in the Department of Pediatric Dentistry at Selcuk University between 2016 and 2019. Methodology: Sixty-one subjects were included in the study. The clinical examination included performing the gingival index (GI) and the plaque index. The values of the indexes were determined and compared, and the failures of retainers were recorded and analyzed in terms of survival. Results: Follow-up loss occurred in 18% of 61 space maintainers. A total of 10% of the evaluated 50 space maintainers had failed due to breakage. By using the Kaplan–Meier method, the estimated mean survival time for space maintainers was 13 months. Lingual arches had the lowest mean survival time of 12 months. Band and loops and removable partial dentures had a similar probability of survival. A significant decrease was observed in the time-dependent evaluation of the means of plaque and gingival indexes; however, no significant difference was found between space maintainer types. Conclusion: The successful use of space maintainers for the premature loss of primary tooth space is achieved by regular follow-ups with the patient’s parents, patient cooperation, and proper space maintainers and choice of material. How to cite this article: Özüdoğru S, Tosun G. Survival and clinical evaluation of various space maintainers used for early primary tooth loss. Int Dent Res 2021;11(Suppl.1):222-7. https://doi.org/10.5577/intdentres.2021.vol11.suppl1.32 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.

This study aimed to assess the fracture resistance and fracture patterns of endodontically treated permanent mandibular molars restored with either preheated or nonpreheated conventional composite resin or short fiber-reinforced composite resin (SFRC). One hundred and twenty mandibular molars with prepared mesio-occluso-distal (MOD) cavities were allocated to six groups: positive control (intact teeth, no restoration, n = 20), negative control (endodontically treated but unrestored, n = 20), and four experimental groups restored with conventional composite, preheated composite, SFRC, or preheated SFRC (n = 20 each). After thermocycling, fracture resistance was tested using a universal testing machine at 0.5 mm/min. Data were analyzed using Jamovi software (Version 2.4.8; The Jamovi Project, Sydney, Australia). Normality was assessed with the Kolmogorov–Smirnov test. Group differences were evaluated using the Kruskal–Wallis test followed by the Dwass–Steel–Critchlow–Fligner post hoc test. The association between fracture modes and fracture strength categories was examined using the chi-square test of independence. A p-value < 0.05 was considered statistically significant. The positive control showed significantly greater fracture strength than all restored groups (p < 0.05). All restored groups had significantly higher fracture resistance than the negative control (p < 0.05), with no significant differences among the restored groups (p > 0.05). A significant association was found between fracture mode and fracture strength (χ²(1) = 6.97, p = 0.008). The preheated SFRC group showed a higher rate of restorable fractures compared to others, suggesting improved clinical reparability with preheating.

This study aims to compare the responses provided by commonly used artificial intelligence-based chatbots such as ChatGPT-3.5, ChatGPT-4o, Gemini 2.0 Flash

This study aimed to assess the effect of heat-generated root canal filling techniques-warm vertical compaction (WVC) and core-carrier (CC)-on the bond strength of bioceramic sealers (NeoSealer Flo BC, AH Plus BC, BioRoot RCS) compared with the resin-based sealer AH Plus. A total of 168 single-rooted mandibular premolars were prepared and randomly assigned to 12 groups according to sealer type and filling technique: hydraulic condensation (HC), WVC, or CC. Push-out bond strength was tested using a universal testing machine, and failure modes were analyzed. Two-way ANOVA was used for statistical comparisons (P = 0.05). The results revealed that AH Plus BC and NeoSealer Flo BC exhibited the highest mean bond strengths across techniques. Both AH Plus and BioRoot RCS showed significantly lower bond strengths (P ≤ 0.05) when used with WVC and CC. However, no significant difference (P > 0.05) was observed for AH Plus BC and NeoSealer Flo BC between WVC and CC. These findings indicate that bioceramic sealers, AH Plus BC and NeoSealer Flo BC, maintain their bonding performance under heat stress, suggesting potential clinical advantages when heat-based obturation techniques are used.

To evaluate the 24-month clinical performance of composite resin restorations with and without polyethylene fiber in the first permanent molars of pediatric patients with extensive caries.