Dentistry Journal最新文献

{"title":"Skeletal and Dentoalveolar Effects of the SOCIA III Appliance in Patients with Pseudo-Class III Malocclusion.","authors":"Mauro Lorusso, Giovanna Jie Wang, Michele Tepedino, Angela Pia Cazzolla, Fariba Esperouz, Lucio Lo Russo, Domenico Ciavarella","doi":"10.3390/dj13090427","DOIUrl":"10.3390/dj13090427","url":null,"abstract":"<p><p><b>Objective:</b> This study aimed to assess the dentoskeletal and postural modifications induced by treatment with the Swallowing Occlusal Contact Intercept Appliance (SOCIA III) in patients with pseudo-Class III malocclusion. The main hypothesis was that treatment with the SOCIA appliance induces significant skeletal and dentoalveolar changes in growing patients with pseudo-Class III malocclusion. <b>Methods:</b> Fifty-two pseudo-Class III malocclusion patients with a mean age of 8.5 were analyzed and compared with fifty-two untreated patients. Cephalometric evaluations were carried out at baseline (T0) and at the end of treatment. The cephalometric analysis comprised sagittal measurements (SNA, ANB, WITS, CB, ACB), dental variables (UI-PP, LI-MP, OVERJET, OVERBITE), and postural parameters (SNBa and cranio-cervical angle of the maxilla). Within-group comparisons at baseline (T0) and post-treatment (T1) were performed using the paired <i>t</i>-test or the Wilcoxon signed-rank test. Inter-group comparisons were based on the differences in variables between the two time points (ΔT1-T0), using the independent samples <i>t</i>-test or the Mann-Whitney U test. <b>Results:</b> At the end of treatment with the SOCIA appliance, significant improvements were observed in the ANB angle (0.61° to 2.06°, <i>p</i> = 0.001), SNA (81.56° to 83.26°, <i>p</i> = 0.006), WITS appraisal (-0.75 mm to 1.24 mm, <i>p</i> = 0.001), ACB angle (9.35 mm to 11.45 mm, <i>p</i> = 0.05), CB (64.78 mm to 65.51 mm, <i>p</i> = 0.03), and SNBa angle (127.57° to 129.14°, <i>p</i> = 0.01), as well as in overjet (0.62 mm to 3.60 mm, <i>p</i> = 0.001) and overbite (0.29 mm to 1.82 mm, <i>p</i> = 0.001). <b>Conclusions:</b> The SOCIA III appliance is effective in correcting pseudo-Class III malocclusion in growing patients by improving skeletal and dentoalveolar relationships.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468626/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145147983","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":"Emerging Metal Additive Manufacturing for Individualized Dental Therapies: A Narrative Review.","authors":"Peng Chen, Taishi Yokoi, Ying-Sui Sun, Huiyong Yang, Hiroyasu Kanetaka","doi":"10.3390/dj13090424","DOIUrl":"10.3390/dj13090424","url":null,"abstract":"<p><p>Metal additive manufacturing (AM) techniques, particularly laser powder bed fusion, are being increasingly recognized not as brand-new technologies, but as emerging technologies with their recent advancements-such as the development of optimized alloys, seamless digital workflow integration, and applications in patient-specific prostheses. With the rise in patient-specific approaches in dentistry, clinicians are seeking customized devices that precisely match individual anatomical and functional needs. AM offers various advantages, such as the fabrication of complex geometries directly from digital designs, enhanced clinical precision, reduced material waste, and simplified manufacturing workflow, and hence can uniquely address these demands. Recent advancements in AM techniques have led to the development of titanium and cobalt-chromium alloys with improved mechanical properties, corrosion resistance, and biological compatibility. These alloys show great potential for clinical applications. Additionally, AM enables precise control over the microstructures and surface topographies of these alloys during fabrication, facilitating their optimized integration with biological tissues. This mini review summarizes recent advancements in metal AM technologies relevant to personalized dentistry, highlights key material developments, discusses current clinical applications, and identifies key challenges such as high cost, materials limitations, and regulatory hurdles, and highlights future opportunities including multi-materials AM, smart implants, and AI-driven optimization for fully integrated, digitally driven personalized dental care.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468053/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148298","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":"Effectiveness of Silica Coatings in Enhancing Resin Cement Adhesion to Zirconia: A Systematic Review.","authors":"Laura C Lara-Hernández, Luis C Jiménez-Borrego, Nelly S Roa","doi":"10.3390/dj13090426","DOIUrl":"10.3390/dj13090426","url":null,"abstract":"<p><p><b>Background:</b> The use of zirconia-based restorations has increased in dentistry due to their aesthetics, high strength, and biocompatibility. However, achieving durable adhesion between resin cements and zirconia remains a challenge in restorative dentistry. Adhesive failures can lead to complications ranging from dentin hypersensitivity to the loss of the restored tooth. This review evaluates the impact of surface treatments based on silica coatings as a strategy to improve the adhesion of resin cements to zirconia. <b>Methods</b>: A systematic review was conducted following PRISMA guidelines. Searches were performed in Scopus, Web of Science, PubMed, EBSCO, and ScienceDirect. In vitro studies were included if they (1) evaluated silica-based coatings on zirconia surfaces; (2) measured bond strength at the zirconia-cement interface through shear tests (MPa) and reported failure type (adhesive, cohesive, mixed); (3) used ≥8 specimens per group; and (4) included an untreated zirconia control group. Data were extracted and compared for conditions before and after thermocycling in the studies that reported this procedure. <b>Results</b>: The average bond strength for silica-coated zirconia was 15 MPa without thermocycling and 11.97 MPa after thermocycling, regardless of the coating technique. These values were significantly higher than those of untreated zirconia (8.45 MPa and 6.41 MPa, respectively). Cohesive and mixed failures predominated in silica-treated groups, suggesting more effective adhesion compared to controls, which presented mainly adhesive failures. <b>Conclusions</b>: Silica coatings, especially when combined with adhesion promoters, MDP-based primers, significantly enhance the bond strength of resin cements to zirconia. This reduces the risk of secondary caries, sensitivity, restoration debonding, and potential tooth fractures. However, the effectiveness of these coatings varies depending on the technique used, suggesting the need to standardize protocols to optimize clinical outcomes.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468174/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148276","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":"Oral Health-Related Quality of Life, Behaviours and Oral Manifestations in a Paediatric Population with Type I Diabetes Mellitus: A Comparative Cross-Sectional Study.","authors":"Patrícia João, Ana Coelho Canta, Sónia Mendes","doi":"10.3390/dj13090425","DOIUrl":"10.3390/dj13090425","url":null,"abstract":"<p><p><b>Introduction:</b> Type 1 diabetes mellitus (DM1) can influence oral health, increasing susceptibility to various oral manifestations. <b>Objectives:</b> This study aimed to characterise oral health-related quality of life (OHRQoL), reported oral symptoms, and oral health behaviours in paediatric individuals with DM1, and compare them with those without DM1; as well as to identify factors associated with OHRQoL in both groups. <b>Methods:</b> A cross-sectional study was conducted using an online questionnaire completed by caregivers of Portuguese children with or without DM1. The questionnaire collected information on sociodemographic, oral health behaviours, perceived oral health, reported oral manifestations, and OHRQoL using the Early Childhood Oral Health Impact Scale (ECOHIS). Descriptive statistics were calculated, along with chi-square tests and negative binomial regression analyses (α = 0.05). <b>Results:</b> The sample included 235 individuals (115 with DM1 and 120 without). No significant differences were observed in overall OHRQoL between the groups, although children with DM1 had slightly higher ECOHIS total scores (4.38 vs. 4.02). Oral health behaviours were comparable in both groups. Children with DM1 reported significantly more xerostomia (<i>p</i> < 0.001). Within the DM1 group, better OHRQoL was significantly related to the following variables: female sex, absence of caries, absence of gingivitis, and no taste changes. In contrast, in the non-DM1 group, OHRQoL was associated with different conditions: the caregiver perception, frequent sugar intake, recurrent aphthous stomatitis, burning mouth sensations, and age. <b>Conclusion:</b> Although OHRQoL levels and oral health behaviours were similar between children with and without DM1, the factors influencing these outcomes varied considerably, emphasising the need for targeted oral health strategies tailored to the specific context of this chronic condition.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468200/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148264","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":"Dental Staff Members' Perception Regarding Objective Structured Clinical Examination (OSCE): An Experience from Saudi Arabia.","authors":"Ahmad A Alnazzawi","doi":"10.3390/dj13090423","DOIUrl":"10.3390/dj13090423","url":null,"abstract":"<p><p><b>Background:</b> The Objective Structured Clinical Examination (OSCE) is a widely used assessment tool in education in the health profession. Understanding faculty perceptions of the OSCE regarding fairness, validity, reliability, and effectiveness is essential to enhancing its implementation in dental education in Saudi Arabia. <b>Objective:</b> To assess dental faculty members' perceptions of the OSCE as an assessment method in Saudi Arabia, focusing on its fairness, reliability, validity, and effectiveness compared to other assessment formats. <b>Methods:</b> A cross-sectional analytical survey-based study was conducted among dental faculty members across 11 dental colleges in Saudi Arabia. A modified validated questionnaire was distributed electronically through the college deans to faculty members. Responses were analyzed using SPSS v25, applying descriptive and inferential statistics (chi-square test, significance set at <i>p</i> ≤ 0.05). <b>Results:</b> A total of 181 faculty responses from 11 Saudi dental colleges indicated broad support for the OSCE as a fair (78.3%), well-structured (71.1%), and comprehensive assessment of clinical skills (70%). While nearly half found it less stressful than other formats, 30% still perceived it as intimidating. Faculty agreed that OSCE tasks reflected taught content (65.9%), instructions were clear (75.7%), and scores were largely standardized and unbiased (63.9-72.9%). Compared with other assessment methods, essays/ short-answer questions (SAQs) were viewed as most effective for learning, but the OSCE was most favored for continued use in clinical training (52.8%). <b>Conclusions:</b> Faculty members in Saudi dental schools generally view the OSCE as a fair, valid, and effective assessment method. Despite concerns about student preparedness and perceived difficulty, the OSCE is endorsed as a key tool for evaluating clinical competencies. Addressing these concerns may further enhance its educational value and implementation.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468690/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148256","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":"Breaking Barriers: Evaluating Challenges in Advancing Periodontal Ligament Cell-Derived Organoids.","authors":"Luiza de Oliveira Matos, Mariane Beatriz Sordi, Anahid Ahmadi Birjandi, Paul Thomas Sharpe, Ariadne Cristiane Cabral Cruz","doi":"10.3390/dj13090422","DOIUrl":"10.3390/dj13090422","url":null,"abstract":"<p><p>The objective of this review was to critically evaluate the available literature on the development of periodontal ligament organoids. Articles concerning periodontal ligament organoids were considered eligible. References were selected in a two-phased process. Electronic databases PubMed and Scopus were screened up to June 2024, yielding 1101 studies. After removing duplicates, titles, and abstracts were screened, resulting in 44 articles being included in this review. A detailed analysis of the included articles was organized into four categories: (1) the cell lineages used, including the simultaneous use of two or more cell types, (2) the extracellular matrix composition, (3) the organoid preparation methods, and (4) the characterization techniques employed. The main findings show that collagen combined with biodegradable polymers-such as poly(caprolactone), poly(glycolic acid), and poly(lactic acid)-is the most used material. Periodontal ligament cells and periodontal fibroblasts were the most used cell types, due to their role in extracellular matrix remodeling. The most frequent analyses performed included alkaline phosphatase, extracellular matrix mineralization, and gene expression, providing insights into differentiation and periodontal regeneration. Cementogenic differentiation was the most studied, followed by osteogenic, chondrogenic, adipogenic, and epithelial differentiation. However, challenges remain, including methodological inconsistencies and the need for scaffold optimization. Future research should focus on standardizing protocols, improving biomaterials, and integrating bioprinting techniques to improve clinical translation.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12469206/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148208","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 Usability Evaluation of Three Digital Smile Design Software Tools Using the System Usability Scale.","authors":"Andrei Macris, Sergiu Drafta, Ștefania Martiniuc, Alexandru E Petre","doi":"10.3390/dj13090418","DOIUrl":"10.3390/dj13090418","url":null,"abstract":"<p><p><b>Background/Objectives:</b> Digital Smile Design software tools facilitates aesthetic planning and improves communication between clinicians, patients, and dental laboratories. These software tools have been developed to support facial and dental analysis and to assist users in creating an ideal smile integrated with the patient's appearance. This study aimed to compare the usability of three DSD software tools-Preteeth AI Pro (version 6.0.0), SmileCloud, and Medit Link (version 3.4.3)-using the System Usability Scale. <b>Methods:</b> Twenty-three prosthodontists and prosthodontics residents evaluated each tool following a standardized usage protocol. After completing Digital Smile Designs in each application, participants filled out a 10-item System Usability Scale questionnaire (score 0-100). Descriptive statistics were calculated, and intergroup comparisons were performed using one-way ANOVA (<i>p</i> < 0.05). <b>Results:</b> Mean System Usability Scale scores were 74.24 (Preteeth AI Pro), 80.33 (SmileCloud), and 73.15 (Medit Link). SmileCloud obtained the highest score (A-grade, Curved Grading Scale), indicating \"good to very good\" usability. No statistical significances were found between the three software tools (F = 1.04, <i>p</i> = 0.36). <b>Conclusions:</b> All three Digital Smile Design software tools achieved System Usability Scale scores above the usability benchmark of 68, with SmileCloud demonstrating the most favorable user experience. These findings may assist clinicians in selecting intuitive and efficient Digital Smile Design platforms to optimize aesthetic treatment workflows.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468294/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148302","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":"Comparison of Narrow (<3.75 mm) and Standard (≥3.75 mm) Diameter Implants Supporting the Same Multiple Fixed Prostheses and Mirroring Real-World Clinical Scenarios: Non-Randomized Clinical Trial.","authors":"Eduardo Anitua, Ander Alcaine, Mohammad Hamdan Alkhraisat","doi":"10.3390/dj13090420","DOIUrl":"10.3390/dj13090420","url":null,"abstract":"<p><p><b>Objective:</b> To compare the survival of narrow (<3.75 mm) implants and standard diameter (≥3.75 mm) implants supporting the same multiple fixed prostheses and mirroring real-world clinical scenarios. <b>Methods:</b> This is a controlled clinical trial where both test (diameter < 3.75 mm) and control (diameter ≥ 3.75 mm) implants supported the same prosthesis. The principal variable was implant survival and the secondary variables included demographic, surgical and prosthetic variables. Statistical analyses were conducted to compare these variables between the study groups. <b>Results:</b> A total of 42 patients participated in this study, with an age range of 39 to 92 years. The follow-up period was 36 months. Narrow diameter implants (NDIs) were predominantly placed in the premolar region and more frequently in bone types I and II compared to wider diameter implants. No implant failures were recorded during the study period. Marginal bone level remodeling showed statistically significant differences between the study groups at 12-month follow-up. However, these differences were no longer significant after 3 years of follow-up (Test: median -0.2 mm, range -1.5 to 0.8 mm; Control: median 0.0 mm, range -1.3 to 0.8 mm; <i>p</i> = 0.119). None of the prostheses failed, and all remained free of technical complications throughout the study. <b>Conclusions:</b> Within the limitations of this study, narrow-diameter implants demonstrated comparable clinical outcomes to standard-diameter implants when supporting the same prostheses.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468807/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148288","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":"Digital Accuracy of Closed-Tray Implant Impressions: Influence of Polyvinyl Siloxane Viscosity and Subgingival Posterior Implant Angulation.","authors":"Yousra Ahmed, Shereen Moselhy Abdul Hameed, Zainab Refaey El Sharkawy, Faris A Alshahrani, Tarek AbdAllah Mahmoud, Inas M Mohamed, Noha Taymour","doi":"10.3390/dj13090421","DOIUrl":"10.3390/dj13090421","url":null,"abstract":"<p><p><b>Objectives:</b> To assess the impact of PVS impression material viscosity and implant angulation on the three-dimensional accuracy of implant casts in a partially edentulous situation using the closed-tray technique. <b>Materials and Methods</b>: Three epoxy resin mandibular partially edentulous models (Kennedy Class I) were fabricated, each with four implant analogues placed at teeth positions 35, 37, 45, and 47. The anterior analogues were positioned parallel (0), while the posterior analogues were placed at different angulations: Group 1, 30° mesiodistal; Group 2, 20° mesiodistal; Group 3, 20° buccolingual. All analogues were placed 2 mm subgingivally. Closed-tray impressions (n = 8 per subgroup) were made using either heavy + light body PVS or monophase PVS. Resulting stone casts were scanned, and STL files were processed and analyzed using reverse engineering software (Geomagic Control X). Three-dimensional deviations (root mean square, RMS) between reference and test models were calculated by superimposition and best-fit algorithm. <b>Results:</b> With monophase PVS, implant angulation significantly influenced cast accuracy (<i>p</i> < 0.001). The 30° MD group exhibited the highest deviation (96 ± 7 µm), followed by the 20° BL group (81 ± 6 µm), then the 20° MD group (75 ± 6 µm). In contrast, no statistically significant difference in accuracy was observed among angulation groups when using heavy + light body PVS (77 ± 3 µm, 82 ± 13 µm, and 79 ± 8 µm for 30° MD, 20° BL, and 20° MD, respectively; <i>p</i> = 0.550). <b>Conclusions:</b> Both monophase and heavy + light body PVS impression materials produced clinically acceptable accuracy for closed-tray implant impressions. However, the heavy + light body PVS demonstrated greater consistency across various implant angulations and is recommended for multiple angulated subgingival posterior implants when using the closed-tray technique.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468653/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148240","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":"Crown-Root Ratio as a Predictive Morphometric Indicator in Mandibular First Molars with Occlusal Trauma and Periodontitis: A Radiographic and Clinical Modeling Study.","authors":"Lidya Irani Nainggolan, Bramma Kiswanjaya, Menik Priaminiarti, Sri Lelyati Chaidar Masulili, Hanna H Bachtiar-Iskandar, Yuniarti Soeroso, Pitu Wulandari, Eha Renwi Astuti, Akihiro Yoshihara","doi":"10.3390/dj13090419","DOIUrl":"10.3390/dj13090419","url":null,"abstract":"<p><p><b>Background/Objectives:</b> Trauma from occlusion (TFO) is a modifying factor in periodontal disease progression, yet its morphometric impact on mandibular molars remains underexplored. The crown-root ratio (CRR), traditionally used in prosthodontic prognosis, may also serve as a diagnostic marker for structural changes in periodontally compromised teeth. This study evaluated the relationship between crown and root dimensions and clinical/radiographic parameters in mandibular first molars with TFO and developed predictive models emphasizing the role of CRR. <b>Methods:</b> This retrospective cross-sectional study included 99 periodontitis patients clinically and radiographically diagnosed with TFO. Digitized periapical radiographs of mandibular first molars (tooth 36 or 46) were analyzed to measure clinical and radiographic CRR, crown and root length, tooth inclination, alveolar bone loss, and root morphology. Correlation and stepwise multiple regression analyses identified predictors of crown and root length. <b>Results:</b> Males had significantly greater crown length (7.6 vs. 7.2 mm), root length (13.3 vs. 12.3 mm), and radiographic CRR (1.2 vs. 1.0) (<i>p</i> = 0.008). Clinical CRR showed a moderate positive correlation with crown length (<i>r</i> = 0.526) and a strong inverse correlation with root length (<i>r</i> = -0.735) (<i>p</i> < 0.001). Regression models revealed that clinical CRR, root length, and sex significantly predicted crown length (R² = 0.955), while CRR and crown length predicted root length (R² = 0.958). <b>Conclusions:</b> This study demonstrated that the clinical crown-root ratio (CRR) is a strong predictor of both crown and root lengths in mandibular first molars affected by trauma from occlusion (TFO) in periodontitis patients.</p>","PeriodicalId":11269,"journal":{"name":"Dentistry Journal","volume":"13 9","pages":""},"PeriodicalIF":3.1,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12468253/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145148242","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}