Proper cement selection in fixed prosthesis plays a determinative role in providing long-term serviceability, retention, caries prevention, and patient satisfaction. This study, reviews different luting agent characteristics and their application based on different clinical situations and different types of full coverage restorations. An electronic search was conducted through PubMed, Medline, and Google scholar using following keywords or combinations: restoration, full coverage, PFM, porcelain fused to metal, all ceramic, zirconia, ceramic, casting, fixed partial denture, cement*, dental cement, cement selection, and retention. The most related articles were selected for review. Choosing a proper luting agent is highly dependent on scientific knowledge regarding the characteristics of restorative materials and luting agents. Conventional cements could be indicated in various situations; however, some restorative materials or clinical situations call for resin-cements to provide predictable retention, support, and durability. Conscious selection of retentive cement for each type of restoration/material is necessary to provide predictable successful treatment and reduce the potential complications. Key words:Adhesive cement, dental bridgework, dental cements, dental crowns, dental porcelain, prostheses and implants.

Ords with different combinations: endodontically treated tooth, root canal therapy, dental posts, post and core, prefabricated posts, custom posts, dental cement, resin cements, cement selection, cement, and adhesive resin cement. Results: Evaluating full texts, 146 articles were selected to review the types of posts and cements, selection criteria of appropriate cement for each type of post, and compare the results obtained by different cements. Conclusion: Dental cements affect the survival rate, durability, and success rate of postbased treatments. Considering special characteristics and application of each type of intracanal post, conscious selection of cement is an important determining factor in long-lasting success. Choosing an appropriate cement has a key role in success and durability of dowel posts-based fixed restorations....

Objectives: This study aimed to evaluate the prevalence of C‐shaped canals and three‐rooted mandibular molars in the Iranian population using cone‐beam computed tomography (CBCT).Materials and Methods: This study evaluated mandibular teeth on 292 CBCT scans of patients referred to the Department of Radiology, Faculty of Dentistry, Islamic Azad University, Isfahan, Iran. All CBCT scans were obtained with the same three‐dimensional CBCT scanner, and sections were reconstructed in all three planes (sagittal, axial, and coronal) with 1 mm slice thickness. A total of 291,402, and 200 first, second, and third molars, respectively, were evaluated. Data were analyzed using SPSS software (version 26.0).Results: Of 291 mandibular first molars, 0.7% were single‐rooted, 96.6% were two‐rooted, and 2.7% were three‐rooted. The prevalence of C‐shaped canals was 1.7% in mandibular first molars. Of 402 mandibular second molars, 8.5% were single‐rooted, 90.5% were two‐rooted, and 1% were three‐rooted. The prevalence of C‐shaped canals was 2% in mandibular second molars. Of 200 mandibular third molars, 21.5% were single‐rooted, 77.5% were two‐rooted, and 1% were three‐rooted. The prevalence of C‐shaped canals was 2% in mandibular third molars.Conclusion: In the present study, the majority of mandibular molars were two‐rooted, and three‐rooted mandibular molars were less common. The third and second mandibular molars both had an increased prevalence of C‐shaped canals. Mandibular first molars had the highest prevalence of three‐rooted molars.

Objective: The main objective of this study was to compare the knowledge and attitude of general dentists, senior dental students, and orthodontic residents toward obstructive sleep apnea (OSA).Materials and Methods: A questionnaire was designed and administered among 73 senior dental students, 84 general dentists, and 50 orthodontic residents. The questionnaire asked for demographic information of the participants and assessed their knowledge and attitude toward OSA. The validity and reliability of the questionnaire were confirmed by experts. Data were analyzed by the Kruskal−Wallis and Bonferroni tests using SPSS (α = 0.05).Results: The mean knowledge scores of general dentists and senior dental students were significantly lower than those of orthodontic residents (p < 0.001). However, there was no significant difference in the knowledge score of senior dental students and general dentists (p = 1). The mean knowledge score was significantly higher in dentists with 1–3 years of professional clinical experience (p = 0.02). The knowledge score was the highest in dentists working in private clinics followed by private offices and public clinics. The mean attitude score was the highest in orthodontic residents followed by general dentists and dental students. There was no significant difference in attitude based on the attended university, age, or time of graduation.Conclusion: According to the results, general dentists had insufficient knowledge about OSA, which could result in under‐diagnosis or misdiagnosis of patients with OSA. This finding highlights the need for further education and training for dentists to properly identify and refer OSA patients to orthodontists or sleep specialists.

Aim: This scoping review aimed to evaluate effectiveness of using tooth graft (TG) mixture with platelet‐rich fibrin (PRF), examining their roles in oral bone reconstruction and preservation, and evaluating the clinical and histopathological outcomes associated with this approach. Material and Methods: Articles were searched in Scopus, Medline, Web of Science, ProQuest, and Google Scholar up to November 2024. The search was guided by the PCC framework: Population: alveolar bone and calvaria bone defects; Concept: the use of a TG mixture with PRF as a bone graft material; Context: clinical and histopathological outcomes of oral bone reconstruction and preservation. Two independent researchers carried out the screening, study selection, and data extraction processes. Results: Use of the PRF and TG mixture for socket preservation is superior to using each of these biomaterials individually. However, in the context of bone reconstruction, although all studies confirm new bone formation, the superiority of this mixture over the separate use of each biomaterial remains uncertain. Additionally, all studies confirm the increase in bone density and new bone formation aimed at implant placement. Conclusion: The majority of studies have reported that the PRF and TG mixture enhances both the quality and quantity of bone.

Background. This review evaluated the efficacy of various suturing techniques in gingival graft stabilization to optimize clinical outcomes and minimize the need for revision surgeries. Methods. This scoping review was conducted across Scopus, PubMed, Cochrane, Web of Science, and ProQuest (through April 2025) using PICO criteria: Population (gingival grafts around teeth), Intervention (different suturing techniques), Comparison (efficacy of various suturing techniques in gingival graft stabilization), and Outcomes (keratinized tissue width [KTW], keratinized tissue height [KTH], and root coverage [RC]). From 838 initial records, 73 studies met the inclusion criteria after dual-reviewer screening with arbitration by a third reviewer. Study quality was assessed using the Joanna Briggs Institute tools. Results. For free gingival grafts (FGGs), primary stabilization methods included interrupted sutures (with/without periosteal fixation), sling sutures, and cyanoacrylate. Connective tissue grafts (CTGs) predominantly use sling sutures, often combined with cross-mattress or interrupted sutures, vertical/double-cross mattress techniques, or continuous sutures with coronally advanced/tunnel flaps. While 72% of FGG studies (23/32) reported significant KTW improvement with interrupted sutures (a mean gain of 2.1±0.8 mm), CTG studies demonstrated 96% RC success (43/45) with sling-based techniques. However, outcomes showed substantial heterogeneity due to variability in the Miller classification (33/67 studies focused on Class I only) and inconsistent reporting of suture material (only 5/67 specified size/type). Conclusion. No single suturing technique demonstrated clear superiority in graft stabilization, likely due to study heterogeneity. While sling/mattress combinations showed optimal RC for CTGs and interrupted sutures/cyanoacrylate performed well for FGGs, standardized RCTs controlling for confounding variables are required to establish definitive protocols.