BMC Oral Health最新文献

{"title":"Enhancing dental porcelain repair strength: the impact of chairside plasma surface treatment-an in vitro study.","authors":"Mehmet Köse, Özlem Çölgeçen","doi":"10.1186/s12903-025-05956-w","DOIUrl":"10.1186/s12903-025-05956-w","url":null,"abstract":"<p><p>The success of intraoral repair for fractured porcelain restorations has been questioned for many years. The longevity of the repaired restoration should be extended with effective methods that provide more sustainable clinical success. This study aimed to evaluate the effect of chairside plasma surface treatment on dental porcelain repair bond strength. Five hundred-fifteen rectangular specimens (12 × 14 × 1 mm) were fabricated from Cr-Co metal alloy (M) by lost wax technique, from zirconia (Z) and feldspathic (F) ceramic using the precision cutting device from CAD-CAM blocks. Specimens were pre-aged with 10,000 thermocycles to simulate intraoral conditions, and then divided into twenty-three subgroups: No treatment (M0, Z0, F0 groups/N = 45, n = 15), only plasma (MP, ZP, FP groups /N = 75, n = 25), only tribochemical silica coating via CoJet (MC, ZC groups/N = 30, n = 15), only hydrofluoric acid for feldspathic ceramic (FA group/n = 15), bonding agent (MB, ZB, FA groups /N = 75, n = 25), and their combinations (MCB, MCP, MPB, MCPB, ZCB, ZCP, ZPB, ZCPB, FPB, FAP, FAPB groups/N = 275, n = 25). Surface roughness (n = 10/per group), contact angle (n = 5/per group), shear bond strength (n = 10/per group), and failure modes (n = 10/per group) were evaluated. Statistical analyses were performed with a two-way analysis of variance at a significance level of α = 0.05. According to the results, plasma surface treatment increased the wettability of the materials without affecting surface roughness. When plasma was applied before the bonding agent, shear bond strength values were significantly improved (p < 0.001). The effectiveness of plasma and tribochemical silica coating was similar for zirconia (p = 0.960) and metal alloy substructures (p = 0.219). The MCPB, ZCPB, and FAPB groups had the highest bonding values within their main material groups (p < 0.001). Conclusively, chairside plasma surface treatment significantly enhances the shear bond strength of the repair material applied to the Cr-Co alloy, zirconia, and feldspathic ceramics without changing the surface roughness. It cannot replace HF acid or bonding agents, but it can serve as a substitute for tribochemical silica coating for dental porcelain repair procedures.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1180"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12269196/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development and evaluation of a deep learning-based system for dental age estimation using the demirjian method on panoramic radiographs.","authors":"Yunus Balel, Kaan Sağtaş, Havva Nur Bülbül","doi":"10.1186/s12903-025-06420-5","DOIUrl":"10.1186/s12903-025-06420-5","url":null,"abstract":"<p><strong>Background: </strong>To develop and evaluate a deep learning-based model for automatic dental age estimation using the Demirjian method on panoramic radiographs, and to compare its performance with the traditional manual approach.</p><p><strong>Materials and methods: </strong>A total of 4,800 panoramic radiographs (mean age: 10.64 years) were used to train, validate, and test a YOLOv11-based deep learning model for tooth development staging. Model performance was evaluated using precision, recall, F1 score, and mAP metrics. In addition, a separate dataset of 650 individuals (325 females, 325 males) was used to compare chronological age, manual Demirjian assessments, and AI-assisted estimations through repeated-measures ANOVA and linear regression analysis.</p><p><strong>Results: </strong>The model achieved its highest performance in the 2nd Molar-H group (Precision: 0.99, Recall: 1.0, F1: 0.995), and its lowest in the 1st Molar-B group (Precision: 0.471, F1: 0.601). Both manual and AI-assisted Demirjian methods significantly overestimated chronological age (p < 0.001), but no significant difference was observed between them (p = 0.433). Regression analysis indicated a weak but statistically significant relationship between age and prediction error, more pronounced in the AI-assisted model (R² = 0.042).</p><p><strong>Conclusion: </strong>The AI-assisted system demonstrated comparable accuracy to the manual Demirjian method and showed higher performance in later stages of tooth development. The developed Python script and graphical interface allow for rapid, scalable, and user-friendly application of the method. While the system shows promise for use in clinical and forensic settings, broader validation with diverse populations and alternative model architectures is recommended before clinical deployment.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1172"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265248/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dietary inflammatory index mediates the association between planetary health diet index and periodontitis.","authors":"Hongyang Gong, Tiantian Li, Shuxian Xie, Shaoqun Huang","doi":"10.1186/s12903-025-06575-1","DOIUrl":"10.1186/s12903-025-06575-1","url":null,"abstract":"<p><strong>Background: </strong>With global shifts in diet and environment, understanding how dietary factors and inflammation affect oral diseases like periodontitis is essential for prevention. The Planetary Health Diet Index (PHDI) promotes a plant-based diet for both health and sustainability, while the Dietary Inflammatory Index (DII) measures a diet's inflammatory potential. This study examines the link between PHDI and periodontitis and assesses DII's moderating role.</p><p><strong>Methods: </strong>This study conducted a cross-sectional analysis of 9,016 participants from the 2009-2014 NHANES database. We used subgroup analysis, restricted cubic splines (RCS), and multivariable logistic regression to investigate the association between PHDI and periodontitis prevalence. Additionally, mediation analysis was performed to explore the potential relationship between DII, PHDI, and periodontitis.</p><p><strong>Results: </strong>This study included 9,016 participants, of whom 4,521 were diagnosed with periodontitis. After adjusting for potential confounders in multivariable logistic regression models, a 10-point increase in PHDI was associated with a 6% lower prevalence of periodontitis (odds ratio [OR] = 0.94, 95% confidence interval [CI]: 0.89-0.99). Conversely, each one-unit increase in DII was associated with a 6% higher prevalence of periodontitis (OR = 1.06, 95% CI: 1.01-1.10). These associations remained robust when PHDI and DII were categorized into tertiles. RCS analysis demonstrated a significant linear relationship between PHDI and periodontitis. Mediation analysis indicated that DII mediated 21.74% of the association between PHDI and periodontitis (P = 0.004).</p><p><strong>Conclusions: </strong>The results of this study show a strong negative correlation between PHDI and the prevalence of periodontitis. Additionally, DII appears to mediate this relationship, suggesting that an anti-inflammatory diet may offer benefits.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1177"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12269193/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the link between screen time and severity of early childhood caries in primary molars: a cross-sectional study.","authors":"Dhanraj Kalaivanan, Meenakshi Lakshmanan, Meghana Das, Sumaiyya Saleem, Santhosh Priya Akr, Vishnu Rekha Chamarthi","doi":"10.1186/s12903-025-06135-7","DOIUrl":"10.1186/s12903-025-06135-7","url":null,"abstract":"<p><strong>Background: </strong>Early Childhood Caries (ECC) is a significant yet often overlooked paediatric health concern, particularly in India. Previous studies have linked excessive screen exposure, known as Problematic Screen Exposure (PSE), with caries in children. However, the association between PSE and the severity of ECC in terms of cavitated and non-cavitated lesions remains unexplored. This study investigates the prevalence of PSE among ECC-affected preschool children and examines its correlation with ECC severity.</p><p><strong>Methods: </strong>A cross-sectional observational study was conducted among 100 children aged 36-71 months diagnosed with ECC. Data on screen exposure were collected using the \"Seven-in-Seven Screen Exposure Questionnaire,\" validated per American Academy of Paediatrics guidelines. Clinical examinations classified caries severity using the International Caries Detection and Assessment System (ICDAS-II). Statistical analyses, including the Mann-Whitney U test and Spearman's correlation, assessed relationships between PSE, sociodemographic factors, and ECC severity.</p><p><strong>Results: </strong>57% of participants exhibited high PSE scores. A majority of children (75%) had cavitated lesions. High PSE was associated with higher mean ICDAS scores for molars (p = 0.025), although the correlation between PSE and ECC severity was very weak and not statistically significant (r = 0.042, p = 0.680). Sociodemographic factors, including family size and parental education, were also analysed, with families having three or more children showing elevated ICDAS scores. Oral hygiene practices and dietary habits partially influenced caries severity, with children using non-fluoridated toothpaste exhibiting higher ICDAS scores.</p><p><strong>Conclusions: </strong>High PSE may contribute to the progression of ECC, as evidenced by a higher prevalence of cavitated lesions among children with elevated PSE scores. Preventive strategies focusing on reducing PSE and promoting healthy oral hygiene practices may mitigate ECC severity. Further longitudinal studies are necessary to establish causality and inform targeted prevention strategies.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1181"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12269225/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Protocol for low-level laser therapy (LLLT) to control post-endodontic treatment pain in patients with apical periodontitis: a randomized controlled trial.","authors":"Gabriela Bonacina, Rafael Chies Hartmann, Maximiliano Schünke Gomes, Daiana Elisabeth Böttcher","doi":"10.1186/s12903-025-06216-7","DOIUrl":"10.1186/s12903-025-06216-7","url":null,"abstract":"<p><strong>Background: </strong>Pain after endodontic therapy affects from 2.5 to 60% of patients and may significantly impacts patient's quality of life and adherence to dental treatment. This blind clinical trial protocol was designed to evaluate the analgesic effect of low-level laser therapy (LLLT) and its impact on post-operative pain and on quality of life (QoL) in patients with apical periodontitis (AP) submitted to root canal treatment (RCT).</p><p><strong>Methods: </strong>116 patients will be selected. RCT will be performed using the ProTaper Next system. Patients will be randomly allocated into 2 groups: control (naproxen prescription) and test (LLLT). Post-operative pain levels will be assessed through numeric raking scale (NRS) before intervention and at 6 h, 12 h, 24 h and 72 h after endodontic procedures. Quality of life will be assessed using the OHIP-14 before intervention, post-preparation, post-obturation and 6 months after RCT. Descriptive statistics and normality tests will be carried out, and comparison between groups will be estimated for each outcome (post-operative pain and QoL) using parametric or non-parametric tests. The significance level will be set to 5%.</p><p><strong>Discussion: </strong>This study has the potential to strengthen the evidence on postoperative pain management in Endodontics by exploring efficient and safer protocols. Additionally, it may improve the QoL of patients affected by AP.</p><p><strong>Trial registration: </strong>Clinicaltrials.gov registration: RBR-5hgcgy4, registered on 31/07/2023, https://ensaiosclinicos.gov.br/rg/RBR-5hgcgy4 . Ethics Reference No: 22706919.0.0000.5336. Trial Sponsor: Pontifical Catholic University of Rio Grande do Sul. The Trial was prospectively registered.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1182"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12269224/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Repeatability of color measurements in multi-shade and single-shade resin composites of different thicknesses at different times: spectrophotometer versus mobile phone color applications.","authors":"İbrahim Elgin Olgar, Özhan Yağcı, Muhammet Fidan","doi":"10.1186/s12903-025-06577-z","DOIUrl":"10.1186/s12903-025-06577-z","url":null,"abstract":"<p><strong>Objective: </strong>The aim of this study was to evaluate the short- and long-term repeatability of a spectrophotometer and three mobile phone color applications (MCAs) on the iPhone Operating System (iOS) platform for color differences of single-shade and multi-shade resin materials of different thicknesses.</p><p><strong>Materials and methods: </strong>A spectrophotometer (Vita Easy Shade V) was used as a reference instrument. Three MCAs were used: ColorMeter RGB, Color Analyzer-Iro Shirabe, and Color Info Cam. Color measurements were performed on 1-mm and 2-mm thick specimens of resin composites: Charisma Smart (CS) / A1-A2-A3; Charisma Diamond One (C); Opallis (OP) / E1-E2-E3; Vittra APS Unique (V); Estelite Sigma Quick (ES) / A1-A2-A3; and Omnichroma (O) (n = 8). The specimens were measured at three time periods: Day 0 (t₀), Day 1 (t₁), and Day 7 (t₂). The color differences were analyzed using the CIEDE2000 formula, with the corresponding color difference (ΔE₀₀) and mean color difference from the mean (MCDM₀₀). Robust analysis of variation (Robust ANOVA) was used for statistical analysis (p < 0.05).</p><p><strong>Results: </strong>The resin composites' main effects were statistically significant for MCDM₀₀ (p < 0.001). The highest MCDM₀₀ was observed in the OP-A3 composite (2.39 ± 0.18). Method effects were also significant (p = 0.001), with the Color Analyzer showing the highest MCDM₀₀ (2.02 ± 0.08) and the spectrophotometer showing the lowest MCDM₀₀ (0.40 ± 0.02). The highest MCDM₀₀ was found in the OP-A3 × 2 mm × Color Analyzer combination (4.18 ± 0.38). At t₀ - t₁, the highest ΔE₀₀ was observed in the Vittra APS Unique composite (1.43 ± 0.10). At t₀ - t₂ and t₁ - t₂, the highest ΔE₀₀ values were found in OP-A3 (2.97 ± 0.22 and 3.37 ± 0.24, respectively). The highest ΔE₀₀ was observed in the OP-A3 × 2 mm × Color Analyzer combination at t₀-t₂ (5.29 ± 0.53) and t₁ - t₂ (5.57 ± 0.57) (p < 0.05).</p><p><strong>Conclusion: </strong>The spectrophotometer showed the highest repeatability over the times tested. The ColorMeter showed the highest repeatability among MCAs. The mobile phone color apps provided accessible and cost-effective color measurements, although their accuracy was inferior to that of spectrophotometers.</p><p><strong>Clinical trial number: </strong>Not applicable.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1175"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12269247/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring disparities in oral health: a comparative study of cochlear implanted and normal-hearing children.","authors":"Serpil Mungan Durankaya, Gülser Kılınç, Hande Evin Eskicioğlu, Enis Alpin Güneri, Yüksel Olgun, Günay Kırkım","doi":"10.1186/s12903-025-06532-y","DOIUrl":"10.1186/s12903-025-06532-y","url":null,"abstract":"","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1170"},"PeriodicalIF":2.6,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265196/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144648489","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Non-surgical periodontal therapy with and without hyaluronic acid gel in type 2 diabetic stage-II periodontitis patients: a randomized clinical trial.","authors":"Reem Al-Abbadi, Nesma Shemais, Alaa Nawwar, Karim M Fawzy El-Sayed","doi":"10.1186/s12903-025-06485-2","DOIUrl":"10.1186/s12903-025-06485-2","url":null,"abstract":"<p><strong>Background: </strong>The present trial evaluated clinically and radiographically the effect of topically applied hyaluronic acid (HA) gel in conjunction with professional mechanical plaque removal (PMPR) in type 2 diabetic stage-II periodontitis patients.</p><p><strong>Methodology: </strong>26 controlled (HbA1c < 7%) type 2 diabetic stage-II grade B periodontitis patients were included in the current trial and randomly assigned to test (n = 13 patients; PMPR + HA) or control (n = 13; PMPR) groups. At baseline, three- and six-months clinical attachment level (CAL; primary outcome), probing pocket depth (PPD), gingival recession depth (GRD), bleeding on probing (BOP), O'Leary plaque index (PI), HbA1c level, radiographic bone density (RBD) and defect depth (DD; all secondary outcomes) were assessed.</p><p><strong>Results: </strong>Although CAL, PPD, BOP, PI, DD and RBD independently significantly improved in the PMPR + HA and the PMPR groups (p < 0.05), no significant differences were notable between both groups. HbA1c significantly decreased solely in the PMPR + HA group (p < 0.05).</p><p><strong>Conclusion: </strong>Type 2 diabetic patients with stage-II periodontitis, benefit clinically from PMPR in the presence or absence of adjunctive HA gel application. Interestingly, HA as an adjunct to PMPR significantly improved HbA1c levels in controlled type 2 diabetic stage-II periodontitis patients.</p><p><strong>Trial registration: </strong>The study was registered in the US National Institutes of Health Clinical Trials Registry (NCT05543434) in September 2022.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1166"},"PeriodicalIF":2.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265118/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mid-facial skeletal and soft tissue changes after maxillary skeletal expander application: a retrospective CBCT study.","authors":"Arzu Alan, Yeşim Kaya, Kevser Sancak","doi":"10.1186/s12903-025-06569-z","DOIUrl":"10.1186/s12903-025-06569-z","url":null,"abstract":"<p><strong>Background: </strong>The increased resistance of midpalatal, zygomaticomaxillary, and pterygopalatine sutures over time reduces the dentofacial orthopedic effect of conventional expanders. To address this, mini-screw-assisted rapid palatal expanders have been developed. The aim of this study was to investigate the mid-facial soft tissue changes along with rotational movements of zygomaticomaxillary complex after maxillary skeletal expander 2 (MSE 2) application.</p><p><strong>Methods: </strong>Pre- and post-expansion CBCT images of 17 patients (10 female, 7 male) with transversal maxillary deficiency and treated with MSE 2, were enrolled in this retrospective study. Eight skeletal angular measurements were performed in the coronal and axial zygomatic sections. Besides, nineteen linear and three angular soft tissue measurements were investigated in the midsagittal plane. All the measurements were performed using OnDemand3D software. Paired t-test was used to compare the pre- and post-expansion outcomes.</p><p><strong>Results: </strong>In the coronal zygomatic section, the decrease in frontoethmoidal angle (-2.39°, p = 0.006) and increases in frontozygomatic (R:3.04° (p = 0.001); L:3.01° (p = 0.001)) and zygomaticomaxillary (R:1.36° (p = 0.001); L:1.22° (p = 0.05)) angles revealed the outward rotation of the zygomaticomaxillary complex. The increase in maxillary inclination (R:2.75° (p = 0.001); L:2.76° (p = 0.003)) showed the downward rotation of zygomaticomaxillary complex. The increases in frontozygomatic, frontoalveolar (R:2.77° (p = 0.001); L:2.64° (p = 0.001)) and frontodental (R:2.49° (p = 0.001); L:2.07° (p = 0.001)) angles represented greater skeletal expansion and minimal alveolar bone bending and dental tipping. Soft tissue measurements revealed significant increase in upper (1.47 mm (p = 0.002)) and lower (1.56 mm (p = 0.009)) face heights, alar nasal width (R: 0.67 mm (p = 0.001); L: 0.95 mm (p = 0.002)), nasal tip protrusion (0.83 mm (p = 0.03)), vertical philtrum height (0.25 mm (p = 0.037)), and nasal width angle (4.60° (p = 0.001)), and a decrease in the facial profile angle (2.49° (p = 0.037)).</p><p><strong>Conclusion: </strong>Downward and outward rotation of the zygomaticomaxillary complex around the fulcrum area above the superior aspect of the frontozygomatic suture resulted in significant soft tissue changes in the paranasal and nasal regions.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1168"},"PeriodicalIF":2.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical efficacy of magnet-assisted removal for dental high-speed dental handpiece broken Burs in mandibular third molar surgery: a retrospective study.","authors":"Dongdong Xu, Yaoguang Zhang, Aijun Jiang, Yayi Cai, Xin Nie, Gu Cheng","doi":"10.1186/s12903-025-06513-1","DOIUrl":"10.1186/s12903-025-06513-1","url":null,"abstract":"<p><strong>Background: </strong>Breakage and displacement of the high-speed dental handpiece bur is one of the intraoperative complications during mandibular third molar extraction. The retained metallic fragments can trigger issues such as pain and infection. Traditional retrieval methods require extensive tissue dissection, increasing the risk of nerve injury and postoperative complications. While emerging technologies are precise, their high cost and technical complexity hinder widespread adoption. Therefore, there is an urgent need for minimally invasive and easy-to-use treatments. This retrospective study aimed to compare the clinical efficacy of magnet-assisted removal and conventional methods for retrieving broken burs during mandibular third molar surgery, as well as to analyze the associated factors and outcomes.</p><p><strong>Methods: </strong>This retrospective study analyzed 15 cases of broken burs removal divided into conventional removal (n = 7) and magnet-assisted removal (n = 8) groups. Primary outcomes included operative time and success rate; secondary outcomes encompassed 24-hour postoperative visual analogue scale (VAS) pain scores, limited mouth opening at 72 h postoperatively, and neurosensory disturbances.</p><p><strong>Results: </strong>Compared to conventional removal, magnet-assisted removal significantly reduced operative time (P = 0.03) and showed a non-significant trend toward lower neurosensory complication rates (P = 0.036). Although the success rate of magnet-assisted removal (100%) exceeded that of conventional removal techniques (71.4%), this difference was not statistically significant. The magnet group demonstrated superior secondary outcomes, lower mean VAS scores and fewer cases of limited mouth opening.</p><p><strong>Conclusions: </strong>Magnet-assisted removal is a technically simple, safe, and effective minimally invasive alternative to conventional removal methods. Its advantages include reduced operative duration and potentially improved postoperative recovery.</p>","PeriodicalId":9072,"journal":{"name":"BMC Oral Health","volume":"25 1","pages":"1161"},"PeriodicalIF":2.6,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12265203/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144641761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}