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Effect of Mitophagy on the Tension-Driven Osteogenic Differentiation of Periodontal Ligament Stem Cells During Ageing 衰老过程中有丝分裂对牙周韧带干细胞张力驱动成骨分化的影响。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-09 DOI: 10.1016/j.identj.2026.109408
Chuhan Peng, Yidan Zhang, Linna Bai, Xinyu Zhang, Bowen Xu, Kai Yang

Objectives

Age-related differences in orthodontic tooth movement (OTM) and mechanical force-induced osteogenesis have been reported. Mitophagy plays a crucial role in bone metabolism and various age-related diseases, and BCL2-interacting protein 3 (BNIP3) is a mitophagy-related receptor. This study aimed to elucidate the role of mitophagy associated with BNIP3 on age-related changes in the orthodontic tension-driven osteogenic differentiation of periodontal ligament stem cells.

Materials and methods

Periodontal ligament stem cells (PDLSCs) from adolescent (6-week-old) and adult (8-month-old) rats were cultured and stretched using a Flexcell system. The effects of mitophagy associated with BNIP3 were assessed via real-time quantitative PCR and western blot analyses. Moreover, a rat model of OTM across different ages was established for in vivo analyses. The function of mitophagy in age-related osteogenic differentiation induced by orthodontic force on the tension side was evaluated via microcomputed tomography and immunohistochemistry analyses.

Results

Under tension, the expression of the mitophagy factor BNIP3, the autophagy factor microtubule-associated protein light chain 3 (LC3), and the osteogenic factors Runt-related transcription factor 2 (RUNX2) and Osterix (OSX) significantly increased in rPDLSCs over time. The expression of these factors was also upregulated in the rat OTM model under orthodontic force. Compared with the adolescent group, the adult group exhibited lower levels of mitophagy and osteogenic differentiation after tension both in vivo and in vitro. Enhanced mitophagy induced by carbonyl cyanide m-chlorophenyl hydrazone upregulated the expression of the aforementioned factors in an adult rat OTM model.

Conclusions

Mitophagy is associated with osteogenic activity induced by tension force in PDLSCs and may play a substantial role in regulating age-related changes in the OTM process.
目的:报道了正畸牙齿移动(OTM)和机械力诱导成骨的年龄相关差异。线粒体自噬在骨代谢和各种年龄相关疾病中起着至关重要的作用,bcl2相互作用蛋白3 (BNIP3)是一种线粒体自噬相关受体。本研究旨在阐明与BNIP3相关的线粒体自噬在正畸张力驱动的牙周韧带干细胞成骨分化的年龄相关变化中的作用。材料和方法:采用Flexcell系统培养和拉伸青少年大鼠(6周龄)和成年大鼠(8月龄)的牙周韧带干细胞(PDLSCs)。通过实时定量PCR和western blot分析评估与BNIP3相关的线粒体自噬的影响。此外,我们还建立了不同年龄的大鼠OTM模型进行体内分析。通过显微计算机断层扫描和免疫组织化学分析评估线粒体自噬在张力侧正畸力诱导的年龄相关性成骨分化中的作用。结果:张力作用下,rPDLSCs中自噬因子BNIP3、自噬因子微管相关蛋白轻链3 (LC3)、成骨因子runt相关转录因子2 (RUNX2)和Osterix (OSX)的表达随时间显著升高。在正畸力作用下的大鼠OTM模型中,这些因子的表达也上调。与青少年组相比,在体内和体外张力作用下,成年组的线粒体自噬和成骨分化水平均较低。在成年大鼠OTM模型中,羰基氰化物间氯苯腙诱导的线粒体自噬增强可上调上述因子的表达。结论:线粒体自噬与PDLSCs张力诱导的成骨活性有关,并可能在调节OTM过程中年龄相关的变化中发挥重要作用。
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引用次数: 0
Dual Framework for Classification and Detection of Third Molar Impaction in Panoramic Radiographs 全景x线片第三磨牙嵌塞分类与检测的双重框架。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-09 DOI: 10.1016/j.identj.2026.109430
Zohaib Khurshid, Mousa Haney Alsleem, Fahad Ahmed Aljubairah, Hussain Adel Alghafli, Abdullah Othman Alasafirah, Bassam Abbas Alibrahim, Abdullah Abdulrahman Alshamrani, Abdulelah Nasser Alsuhaymi

Background

The surgical extraction of impacted mandibular third molars present significant clinical challenges, where accurate preoperative assessment is crucial to mitigate risks such as Inferior Alveolar Nerve injury. Although artificial intelligence shows promise in dental radiology, existing approaches are often limited to binary classification, affected by class imbalance, and lack standardized evaluation protocols, thereby restricting their clinical applicability.

Methods

This study proposes two independent deep learning frameworks for comprehensive analysis of third molar impactions. The first framework is an end-to-end object detection pipeline employing modified YOLOv10 and YOLOv11n architectures enhanced with multihead self-attention. The second framework is a feature-based classification approach, where deep features extracted using ResNet50 and InceptionNetV3 are classified using traditional machine learning algorithms.

Results

Validated on a multinational dataset of 5796 expertly annotated orthopantomograms with high inter-rater agreement (κ = 0.92), the proposed frameworks demonstrated competitive performance. The Fine KNN classifier using ResNet50 features achieved the best classification performance, yielding 97.56% accuracy, 96.07% precision, 96.21% recall, and an F1-score of 96.10%, while InceptionNetV3-based classification achieved 97.33% accuracy with an F1-score of 95.30%. For object detection, YOLOv11n attained a mean average precision of 88.9% ([email protected]) and 85.7% ([email protected]:0.95), while maintaining substantially lower computational complexity (19.7 vs 28.4 GFLOPs). Ablation experiments confirmed that the integration of multihead self-attention modules and generative adversarial network-based augmentation improved detection performance by 6.4% mean average precision.

Conclusions

The proposed frameworks enable accurate and automated multiclass assessment of third molar impactions, achieving high diagnostic performance while preserving computational efficiency suitable for clinical deployment. This work advances artificial intelligence-assisted surgical planning by providing reliable F1-score-based evaluation, reliable real-time detection, and enhanced preoperative risk stratification in oral and maxillofacial surgery.
背景:下颌阻生第三磨牙的手术拔除面临着重大的临床挑战,准确的术前评估对于降低下牙槽神经损伤等风险至关重要。尽管人工智能在牙科放射学中显示出前景,但现有的方法往往局限于二元分类,受类别不平衡的影响,缺乏标准化的评估方案,从而限制了其临床应用。方法:本研究提出了两个独立的深度学习框架,用于综合分析第三磨牙嵌塞。第一个框架是端到端目标检测管道,采用改进的YOLOv10和YOLOv11n架构,增强了多头自关注。第二个框架是基于特征的分类方法,其中使用ResNet50和InceptionNetV3提取的深度特征使用传统的机器学习算法进行分类。结果:在5796张具有高一致性(κ = 0.92)的多国数据集上进行验证,所提出的框架表现出竞争性的性能。使用ResNet50特征的Fine KNN分类器的分类性能最好,准确率为97.56%,精密度为96.07%,召回率为96.21%,f1分数为96.10%,而基于inceptionnetv3的分类器准确率为97.33%,f1分数为95.30%。对于目标检测,YOLOv11n达到了88.9% (mAP@0.5)和85.7% (mAP@0.5:0.95)的平均精度,同时保持了较低的计算复杂度(19.7 vs 28.4 GFLOPs)。消融实验证实,多头自注意模块和基于生成对抗网络的增强技术的集成使检测性能平均精度提高了6.4%。结论:所提出的框架能够准确和自动地对第三磨牙嵌塞进行多类别评估,在保持适合临床部署的计算效率的同时实现高诊断性能。这项工作通过提供可靠的基于f1评分的评估、可靠的实时检测和增强的口腔颌面外科术前风险分层,推进了人工智能辅助手术计划。
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引用次数: 0
Artificial Intelligence-assisted Diagnosis of Carotid Artery Calcifications on Panoramic Radiographs: A Meta-analysis 全景x线片上颈动脉钙化的人工智能辅助诊断:meta分析。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-09 DOI: 10.1016/j.identj.2026.109421
Fangfei Ye , Qun Zhou , Siying Zhang
Carotid artery calcifications (CACs), a known risk factor for stroke, can be detected on panoramic radiographs (PRs). However, this clinically significant pathophysiological condition has long been underdiagnosed due to insufficient training and expertise among dentists. Artificial intelligence (AI) may serve as a valuable tool to aid dentists in detecting CACs on PRs. This meta-analysis was conducted to assess the diagnostic accuracy of AI for CACs detection on PRs. A literature search was conducted on PubMed, Embase, Web of Science, Scopus and Cochrane Library up to 4 September 2025 without language limitation. The quality of studies was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool. The performance of AI was assessed via the area under curve (AUC), sensitivity, specificity, positive likelihood ratio (PLR), negative likelihood ratio (NLR), and diagnostic odds ratio (DOR). Meta-analysis was conducted on Stata 14.0. This systematic review identified 8 relevant articles, 7 of which were eligible for meta-analysis. The analysis was conducted from two perspectives: per-side (evaluating the left and right sides of participants separately) and per-person. In the per-side analysis, the summary estimates indicated high diagnostic accuracy: sensitivity was 0.88 (95% CI: 0.84-0.92), specificity was 0.94 (95% CI: 0.91-0.97), the PLR was 15.8 (95% CI: 9.0-27.6), the NLR was 0.12 (95% CI: 0.08-0.18), the DOR was 129 (95% CI: 55-305), and AUC was 0.96. The per-person analysis yielded a pooled sensitivity of 0.90 (95% CI: 0.74-0.97) and specificity of 0.81 (95% CI: 0.73-0.87). The corresponding PLR was 4.6 (95% CI: 3.1-7.0), NLR was 0.12 (95% CI: 0.04-0.36), DOR was 37 (95% CI: 10-144), and the AUC was 0.86. These results indicate that AI may serve as a valuable tool to assist dentists in detecting CACs on PRs. However, large-scale, evidence-based studies are still needed to validate these findings.
颈动脉钙化(CACs)是已知的中风危险因素,可以在全景x线片(pr)上检测到。然而,由于牙医的培训和专业知识不足,这种临床意义重大的病理生理状况长期未得到充分诊断。人工智能(AI)可以作为一个有价值的工具,帮助牙医在pr上检测cac。本荟萃分析旨在评估人工智能对pr患者CACs检测的诊断准确性。在PubMed, Embase, Web of Science, Scopus和Cochrane Library进行了截至2025年9月4日的文献检索,没有语言限制。使用诊断准确性研究质量评估2 (QUADAS-2)工具评估研究质量。通过曲线下面积(AUC)、敏感性、特异性、阳性似然比(PLR)、阴性似然比(NLR)和诊断优势比(DOR)评估人工智能的性能。meta分析采用Stata 14.0。本系统综述确定了8篇相关文章,其中7篇符合meta分析的条件。分析从两个角度进行:每侧(分别评估参与者的左右两侧)和每个人。在单侧分析中,总结估计显示较高的诊断准确性:敏感性为0.88 (95% CI: 0.84-0.92),特异性为0.94 (95% CI: 0.91-0.97), PLR为15.8 (95% CI: 9.0-27.6), NLR为0.12 (95% CI: 0.08-0.18), DOR为129 (95% CI: 55-305), AUC为0.96。人均分析的总敏感性为0.90 (95% CI: 0.74-0.97),特异性为0.81 (95% CI: 0.73-0.87)。相应的PLR为4.6 (95% CI: 3.1-7.0), NLR为0.12 (95% CI: 0.04-0.36), DOR为37 (95% CI: 10-144), AUC为0.86。这些结果表明,人工智能可以作为一种有价值的工具来帮助牙医检测pr上的cac。然而,仍然需要大规模的、基于证据的研究来验证这些发现。
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引用次数: 0
Corrigendum to ‘Endodontic Retreatment Of Mandibular Incisors With Root Canals Variations’ [International Dental Journal Volume 75, Supplement 1, October 2025, 104933]
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-09 DOI: 10.1016/j.identj.2026.109433
Kai Chen , Yuxia Shi , Ni Li
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引用次数: 0
Classifying Delayed Dental Care Using Machine Learning: A National Health Interview Survey Analysis 使用机器学习分类延迟牙科护理:一项全国健康访谈调查分析。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2026.109407
Giang Vu, Atish Chandra, Sanket Salvi, Christian King, Varadraj Gurupur

Background

Delays in dental care worsen oral disease and mirror broader inequities in health care access and use.

Objective

To estimate the 12-month prevalence of delayed dental care among US adults, to characterise disparities across demographic and socioeconomic groups and to evaluate the utility of machine learning models for identifying individuals at elevated risk of delay.

Methods

This study used cross-sectional analysis of the 2023 National Health Interview Survey (NHIS) Sample Adult file (N = 54,927). Survey weights were applied to obtain nationally representative estimates. Descriptive statistics were stratified by age, sex, education, dental insurance coverage and race/ethnicity. In parallel, supervised machine learning classifiers were developed to classify delayed dental care as a binary outcome. Class imbalance was addressed using oversampling applied to training data only. Model performance was evaluated using accuracy, precision, recall, F1-score and area under the receiver operating characteristic curve (AUC), and model interpretability was assessed using SHapley Additive exPlanations (SHAP).

Results

Overall, 14.5% of adults reported delaying dental care in the prior year. Delay was higher among adults aged 35-50 (18.3%) and 51-64 (17.2%) and lower among those 65 or older (11.0%). Racial/ethnic differences were evident: Black/African American adults (19.1%) and individuals reporting multiple races (21.1%) had higher prevalence of delayed care than did White adults (14.2%). Adults without dental insurance were more likely to report delays, underscoring the role of coverage. An educational gradient was observed, with higher delays among those with lower attainment. Among the evaluated classifiers, the Light Gradient Boosting Machine (LightGBM) demonstrated the strongest overall performance (accuracy = 84.87%). The SHAP analysis identified education, income-to-poverty ratio and insurance status as the most influential predictors.

Conclusions

Delayed dental care affects a substantial share of US adults and disproportionately impacts groups defined by age, race/ethnicity, education and insurance status. Interpretable machine learning models can complement traditional survey analyses by supporting population-level risk stratification. Policies that expand dental coverage, reduce financial barriers and target outreach to high-risk populations may mitigate inequities. Given the cross-sectional design, findings should be interpreted as predictive rather than causal. Future research should incorporate contextual determinants (eg, geographic access and provider availability) and longitudinal data to refine population targeting and evaluate intervention impact.
背景:牙科护理的延误使口腔疾病恶化,并反映了卫生保健获取和使用方面更广泛的不平等。目的:估计美国成年人牙科护理延迟12个月的患病率,表征人口统计学和社会经济群体之间的差异,并评估机器学习模型在识别延迟风险高的个体方面的效用。方法:本研究采用横断面分析2023年全国健康访谈调查(NHIS)样本成人文件(N = 54,927)。采用调查权重来获得具有全国代表性的估计数。描述性统计按年龄、性别、教育程度、牙科保险覆盖率和种族/民族进行分层。同时,开发了监督机器学习分类器,将延迟的牙科护理分类为二元结果。类不平衡是通过只应用于训练数据的过采样来解决的。采用准确度、精密度、召回率、f1评分和受试者工作特征曲线下面积(AUC)评价模型性能,采用SHapley加性解释(SHAP)评价模型可解释性。结果:总体而言,14.5%的成年人报告在前一年推迟了牙科护理。35-50岁(18.3%)和51-64岁(17.2%)的延迟发生率较高,65岁及以上的延迟发生率较低(11.0%)。种族/民族差异明显:黑人/非裔美国成年人(19.1%)和报告多种族的个人(21.1%)比白人成年人(14.2%)有更高的延迟护理患病率。没有牙科保险的成年人更有可能报告延误,强调了保险的作用。观察到一个教育梯度,成绩较低的人延迟时间越长。在评估的分类器中,光梯度增强机(LightGBM)表现出最强的整体性能(准确率= 84.87%)。SHAP分析确定教育、收入与贫困比率和保险状况是最具影响力的预测因素。结论:延迟牙科护理影响了很大一部分美国成年人,并且不成比例地影响了年龄、种族/民族、教育和保险状况不同的群体。可解释的机器学习模型可以通过支持人口水平的风险分层来补充传统的调查分析。扩大牙科覆盖范围、减少财务障碍和向高危人群提供服务的政策可能会减轻不公平现象。考虑到横断面设计,研究结果应被解释为预测性而非因果性。未来的研究应纳入环境决定因素(例如,地理可及性和提供者可获得性)和纵向数据,以细化人口目标和评估干预影响。
{"title":"Classifying Delayed Dental Care Using Machine Learning: A National Health Interview Survey Analysis","authors":"Giang Vu,&nbsp;Atish Chandra,&nbsp;Sanket Salvi,&nbsp;Christian King,&nbsp;Varadraj Gurupur","doi":"10.1016/j.identj.2026.109407","DOIUrl":"10.1016/j.identj.2026.109407","url":null,"abstract":"<div><h3>Background</h3><div>Delays in dental care worsen oral disease and mirror broader inequities in health care access and use.</div></div><div><h3>Objective</h3><div>To estimate the 12-month prevalence of delayed dental care among US adults, to characterise disparities across demographic and socioeconomic groups and to evaluate the utility of machine learning models for identifying individuals at elevated risk of delay.</div></div><div><h3>Methods</h3><div>This study used cross-sectional analysis of the 2023 National Health Interview Survey (NHIS) Sample Adult file (<em>N</em> = 54,927). Survey weights were applied to obtain nationally representative estimates. Descriptive statistics were stratified by age, sex, education, dental insurance coverage and race/ethnicity. In parallel, supervised machine learning classifiers were developed to classify delayed dental care as a binary outcome. Class imbalance was addressed using oversampling applied to training data only. Model performance was evaluated using accuracy, precision, recall, F1-score and area under the receiver operating characteristic curve (AUC), and model interpretability was assessed using SHapley Additive exPlanations (SHAP).</div></div><div><h3>Results</h3><div>Overall, 14.5% of adults reported delaying dental care in the prior year. Delay was higher among adults aged 35-50 (18.3%) and 51-64 (17.2%) and lower among those 65 or older (11.0%). Racial/ethnic differences were evident: Black/African American adults (19.1%) and individuals reporting multiple races (21.1%) had higher prevalence of delayed care than did White adults (14.2%). Adults without dental insurance were more likely to report delays, underscoring the role of coverage. An educational gradient was observed, with higher delays among those with lower attainment. Among the evaluated classifiers, the Light Gradient Boosting Machine (LightGBM) demonstrated the strongest overall performance (accuracy = 84.87%). The SHAP analysis identified education, income-to-poverty ratio and insurance status as the most influential predictors.</div></div><div><h3>Conclusions</h3><div>Delayed dental care affects a substantial share of US adults and disproportionately impacts groups defined by age, race/ethnicity, education and insurance status. Interpretable machine learning models can complement traditional survey analyses by supporting population-level risk stratification. Policies that expand dental coverage, reduce financial barriers and target outreach to high-risk populations may mitigate inequities. Given the cross-sectional design, findings should be interpreted as predictive rather than causal. Future research should incorporate contextual determinants (eg, geographic access and provider availability) and longitudinal data to refine population targeting and evaluate intervention impact.</div></div>","PeriodicalId":13785,"journal":{"name":"International dental journal","volume":"76 2","pages":"Article 109407"},"PeriodicalIF":3.7,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146137315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Balancing Demineralisation and Collagen Integrity: A Nanoscale Analysis of Etching Time in Human Dentin 平衡脱矿和胶原完整性:人类牙本质蚀刻时间的纳米级分析。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2026.109413
Wafa Alzubaidi , Emily Ganss , Mina Vaez , Mehrnoosh Neshatian , Sebastian Aguayo , Eszter Somogyi-Ganss , Laurent Bozec

Objectives

To investigate the effect of varying phosphoric acid etching times on dentin demineralisation and collagen fibril morphology and to identify a time-dependent balance between sufficient mineral removal and preservation of collagen nanostructure.

Methods

Dentin specimens from human third molars were etched with 37% phosphoric acid for 6 different durations: 0, 5, 10, 15, 30, and 60 seconds. Demineralisation was assessed using attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy by calculating the phosphate-to-amide I absorbance ratio. Collagen integrity was evaluated using scanning electron microscopy (SEM) and atomic force microscopy (AFM) imaging, with the percentage of visible D-banding serving as a morphometric indicator.

Results

FTIR analysis revealed a progressive reduction in the phosphate signal with increasing etching time, following an exponential decay pattern and approaching a plateau at approximately 10 seconds. AFM imaging revealed that the D-banding periodicity reached its peak at 10 seconds (mean: 71.7%) and subsequently decreased, with notable degradation observed at 30 and 60 seconds. Statistical analysis indicated significant differences in D-banding between the 10-second group and longer etching durations (P < .05).

Clinical significance

This study provides nanoscale evidence that phosphoric acid etching of dentin for approximately 10 seconds achieves effective demineralisation while preserving collagen integrity. Longer etching times compromise fibril structure, underscoring the need for precise, time-controlled protocols to optimise resin–dentin bonding performance.
目的:研究不同的磷酸蚀刻时间对牙本质脱矿和胶原纤维形态的影响,并确定足够的矿物质去除和胶原纳米结构保存之间的时间依赖平衡。方法:将人第三磨牙的牙本质标本用37%磷酸蚀刻0、5、10、15、30、60秒。利用衰减全反射傅立叶变换红外光谱(ATR-FTIR),通过计算磷酸盐-酰胺I吸收比来评估脱矿作用。利用扫描电子显微镜(SEM)和原子力显微镜(AFM)成像评估胶原蛋白的完整性,并以可见d带的百分比作为形态测量指标。结果:FTIR分析显示,随着蚀刻时间的增加,磷酸盐信号逐渐减少,遵循指数衰减模式,并在大约10秒时接近平台。AFM成像显示,d波段周期性在10秒时达到峰值(平均为71.7%),随后下降,在30和60秒时观察到明显的衰减。统计分析显示,10秒组与更长的蚀刻时间组在d波段上有显著差异(P < 0.05)。临床意义:该研究提供了纳米尺度的证据,证明磷酸对牙本质进行约10秒的腐蚀可以有效地脱矿,同时保持胶原蛋白的完整性。较长的蚀刻时间损害了原纤维结构,强调需要精确的、时间控制的协议来优化树脂-牙本质结合性能。
{"title":"Balancing Demineralisation and Collagen Integrity: A Nanoscale Analysis of Etching Time in Human Dentin","authors":"Wafa Alzubaidi ,&nbsp;Emily Ganss ,&nbsp;Mina Vaez ,&nbsp;Mehrnoosh Neshatian ,&nbsp;Sebastian Aguayo ,&nbsp;Eszter Somogyi-Ganss ,&nbsp;Laurent Bozec","doi":"10.1016/j.identj.2026.109413","DOIUrl":"10.1016/j.identj.2026.109413","url":null,"abstract":"<div><h3>Objectives</h3><div>To investigate the effect of varying phosphoric acid etching times on dentin demineralisation and collagen fibril morphology and to identify a time-dependent balance between sufficient mineral removal and preservation of collagen nanostructure.</div></div><div><h3>Methods</h3><div>Dentin specimens from human third molars were etched with 37% phosphoric acid for 6 different durations: 0, 5, 10, 15, 30, and 60 seconds. Demineralisation was assessed using attenuated total reflectance Fourier-transform infrared (ATR-FTIR) spectroscopy by calculating the phosphate-to-amide I absorbance ratio. Collagen integrity was evaluated using scanning electron microscopy (SEM) and atomic force microscopy (AFM) imaging, with the percentage of visible D-banding serving as a morphometric indicator.</div></div><div><h3>Results</h3><div>FTIR analysis revealed a progressive reduction in the phosphate signal with increasing etching time, following an exponential decay pattern and approaching a plateau at approximately 10 seconds. AFM imaging revealed that the D-banding periodicity reached its peak at 10 seconds (mean: 71.7%) and subsequently decreased, with notable degradation observed at 30 and 60 seconds. Statistical analysis indicated significant differences in D-banding between the 10-second group and longer etching durations (<em>P</em> &lt; .05).</div></div><div><h3>Clinical significance</h3><div>This study provides nanoscale evidence that phosphoric acid etching of dentin for approximately 10 seconds achieves effective demineralisation while preserving collagen integrity. Longer etching times compromise fibril structure, underscoring the need for precise, time-controlled protocols to optimise resin–dentin bonding performance.</div></div>","PeriodicalId":13785,"journal":{"name":"International dental journal","volume":"76 2","pages":"Article 109413"},"PeriodicalIF":3.7,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146137237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to ‘Epidemiological Profile of Oral Health Conditions in Ecuador: A Retrospective Study from 2016 to 2022’ [International Dental Journal, Volume 76, Issue 1, February 2026, 109313] “厄瓜多尔口腔健康状况的流行病学概况:2016年至2022年的回顾性研究”的勘误表[国际牙科杂志,76卷,第1期,2026年2月,109313]。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2026.109451
W.B. Willy Bustillos Torrez , C.M. Cecilia Belén Molina Jaramillo , C.H. Christian Patricio Hernández Carrera , A.G. Ana Patricia Gutiérrez , D.L. Darwin Vicente Luna-Chonata
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引用次数: 0
Suzetrigine as a Complementary Analgesic in Dentistry: Evidence, Limitations, and Future Directions for a Novel NaV1.8 Inhibitor 苏泽三嗪作为牙科辅助镇痛药:一种新型NaV1.8抑制剂的证据、局限性和未来发展方向。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2025.109402
William J. Nahm, Tiffany H. Park, Allen J. Job
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引用次数: 0
Fut8-Mediated Core Fucosylation of Toll-Like Receptor 4 Exacerbates Periodontitis Via Hyperactivation of NF-κB Signalling fut8介导的toll样受体4核心聚焦通过NF-κB信号的过度激活加剧牙周炎。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2026.109410
Jiahao Lin , Yongxi Luo , Lu Chen , Cheng Zeng , Lu Wang , Xinmiao Luo , Li Zeng , Huiyong Xu , Zhao Chen

Background

Chronic inflammation in periodontitis is linked to aberrant glycosylation, yet the molecular mechanisms and therapeutic potential of the core fucosyltransferase Fut8 remain undefined.

Methods

Gingival samples from healthy individuals and periodontitis patients were collected. Glycosylation levels were assessed using histological and molecular biological techniques. A mouse periodontitis model was established and injected with the core fucosylation inhibitor 2FF. Integrated transcriptomic and single-cell sequencing data were analysed to screen for key molecules. An in vitro human gingival fibroblast model was utilized. Gene silencing, coimmunoprecipitation, and pathway analysis were employed to elucidate the Fut8-Toll-like receptor 4 (TLR4) regulatory mechanism.

Results

Core fucosylation levels were significantly elevated in periodontitis tissues. Inhibiting this modification alleviated gingival inflammation and bone resorption. Single-cell analysis identified fibroblasts as having the highest glycosylation activity, and Fut8 was pinpointed as the central regulatory molecule. Fut8 enhanced the sensitivity of the NF-κB pathway by mediating glycosylation of TLR4. Silencing Fut8 significantly suppressed inflammatory cytokine secretion. Dual-gene silencing confirmed that Fut8 and TLR4 synergistically drive the inflammatory cascade.

Conclusion

Fut8 amplifies NF-κB signalling through core fucosylation of TLR4. Targeted inhibition of Fut8 blocks periodontal tissue destruction, providing a theoretical basis for glycosylation-targeted therapy.

Clinical relevance

Targeting Fut8-mediated core fucosylation offers a promising therapeutic strategy to suppress inflammation and halt tissue destruction in periodontitis.
背景:牙周炎的慢性炎症与异常糖基化有关,但核心聚焦转移酶Fut8的分子机制和治疗潜力仍不清楚。方法:采集健康人群和牙周炎患者的牙龈标本。使用组织学和分子生物学技术评估糖基化水平。建立小鼠牙周炎模型并注射核心聚焦抑制剂2FF。综合转录组学和单细胞测序数据进行分析,筛选关键分子。采用体外培养人牙龈成纤维细胞模型。采用基因沉默、共免疫沉淀、通路分析等方法阐明了fut8 - toll样受体4 (TLR4)的调控机制。结果:牙周炎组织中核心聚焦化水平显著升高。抑制这种修饰可减轻牙龈炎症和骨吸收。单细胞分析发现成纤维细胞具有最高的糖基化活性,Fut8被确定为中心调控分子。Fut8通过介导TLR4的糖基化,增强NF-κB通路的敏感性。沉默Fut8可显著抑制炎性细胞因子的分泌。双基因沉默证实Fut8和TLR4协同驱动炎症级联反应。结论:Fut8通过核心聚焦TLR4增强NF-κB信号。靶向抑制Fut8阻断牙周组织破坏,为糖基化靶向治疗提供理论依据。临床意义:靶向fut8介导的核心聚焦为抑制炎症和停止牙周炎组织破坏提供了一种有希望的治疗策略。
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引用次数: 0
Comparison of Artificial Intelligence Models for Automatic Segmentation of the Mandibular Canals and Branches 下颌管支自动分割的人工智能模型比较。
IF 3.7 3区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE Pub Date : 2026-02-06 DOI: 10.1016/j.identj.2026.109427
Hanyang Man , Shikun Ma , Huifeng Luo , Bing Wang , Jinlong Shao , Shaohua Ge , Hom-Lay Wang

Objectives

This study aimed to compare and improve the performance of three deep learning models, i.e., U-Net Transformer (UNETR), Swin UNETR, and 3D UX-Net, for the segmentation of the mandibular canal and its branches.

Materials and methods

A dataset of 173 cone beam computed tomography (CBCT) scans was used for training, validation, and testing. The mandibular canals and branches were segmented manually and by the three AI models. A postprocessing module based on anatomical characteristics was then applied to improve model performance. Evaluations were conducted using Dice similarity coefficient (DSC), intersection over union (IoU), 95th Percentile Hausdorff Distance (HD95), average symmetric surface distance (ASSD), precision, and recall.

Results

All models efficiently segmented the mandibular, incisive, and mental canals, operating at least 25 times faster than manual annotation. Both 3D UX-Net and Swin UNETR consistently outperformed the UNETR network across most metrics, with 3D UX-Net demonstrating a slight performance advantage over Swin UNETR in terms of DSC, IoU, and recall. Furthermore, the anatomically-based postprocessing module significantly improved the metrics for all models. Ultimately, the 3D UX-Net with postprocessing achieved the highest accuracy, with mean values of 0.788 (DSC), 0.652 (IoU), 0.23 mm (HD95), 0.083 mm (ASSD), 72.7% (precision), and 87.0% (recall).

Conclusion

3D UX-Net and Swin UNETR are superior to the UNETR for segmenting small dental structures. Between the two, 3D UX-Net demonstrated statistically significant improvements in overlap and recall. Furthermore, the performances of these models can be significantly enhanced by applying postprocessing strategies based on anatomical characteristics.
目的:比较并改进U-Net Transformer (UNETR)、Swin UNETR和3D UX-Net三种深度学习模型在下颌管及其分支分割方面的性能。材料和方法:173个锥束计算机断层扫描(CBCT)数据集用于训练、验证和测试。分别采用人工和三种人工智能模型对下颌管和支进行分割。然后应用基于解剖特征的后处理模块来提高模型的性能。使用Dice相似系数(DSC)、交集/联合(IoU)、第95百分位豪斯多夫距离(HD95)、平均对称表面距离(ASSD)、精度和召回率进行评估。结果:所有模型均能有效分割下颌、下颌和颏管,操作速度比手工标注快至少25倍。3D UX-Net和Swin UNETR在大多数指标上都优于UNETR网络,其中3D UX-Net在DSC、IoU和召回方面比Swin UNETR表现出轻微的性能优势。此外,基于解剖的后处理模块显著提高了所有模型的指标。最终,经过后处理的3D UX-Net获得了最高的精度,平均值为0.788 (DSC), 0.652 (IoU), 0.23 mm (HD95), 0.083 mm (ASSD), 72.7%(精密度)和87.0%(召回率)。结论:3D UX-Net和Swin UNETR在牙体小结构分割方面优于UNETR。在两者之间,3D UX-Net在重叠和回忆方面显示出统计学上显著的改善。此外,采用基于解剖特征的后处理策略可以显著增强这些模型的性能。
{"title":"Comparison of Artificial Intelligence Models for Automatic Segmentation of the Mandibular Canals and Branches","authors":"Hanyang Man ,&nbsp;Shikun Ma ,&nbsp;Huifeng Luo ,&nbsp;Bing Wang ,&nbsp;Jinlong Shao ,&nbsp;Shaohua Ge ,&nbsp;Hom-Lay Wang","doi":"10.1016/j.identj.2026.109427","DOIUrl":"10.1016/j.identj.2026.109427","url":null,"abstract":"<div><h3>Objectives</h3><div>This study aimed to compare and improve the performance of three deep learning models, i.e., U-Net Transformer (UNETR), Swin UNETR, and 3D UX-Net, for the segmentation of the mandibular canal and its branches.</div></div><div><h3>Materials and methods</h3><div>A dataset of 173 cone beam computed tomography (CBCT) scans was used for training, validation, and testing. The mandibular canals and branches were segmented manually and by the three AI models. A postprocessing module based on anatomical characteristics was then applied to improve model performance. Evaluations were conducted using Dice similarity coefficient (DSC), intersection over union (IoU), 95th Percentile Hausdorff Distance (HD95), average symmetric surface distance (ASSD), precision, and recall.</div></div><div><h3>Results</h3><div>All models efficiently segmented the mandibular, incisive, and mental canals, operating at least 25 times faster than manual annotation. Both 3D UX-Net and Swin UNETR consistently outperformed the UNETR network across most metrics, with 3D UX-Net demonstrating a slight performance advantage over Swin UNETR in terms of DSC, IoU, and recall. Furthermore, the anatomically-based postprocessing module significantly improved the metrics for all models. Ultimately, the 3D UX-Net with postprocessing achieved the highest accuracy, with mean values of 0.788 (DSC), 0.652 (IoU), 0.23 mm (HD95), 0.083 mm (ASSD), 72.7% (precision), and 87.0% (recall).</div></div><div><h3>Conclusion</h3><div>3D UX-Net and Swin UNETR are superior to the UNETR for segmenting small dental structures. Between the two, 3D UX-Net demonstrated statistically significant improvements in overlap and recall. Furthermore, the performances of these models can be significantly enhanced by applying postprocessing strategies based on anatomical characteristics.</div></div>","PeriodicalId":13785,"journal":{"name":"International dental journal","volume":"76 2","pages":"Article 109427"},"PeriodicalIF":3.7,"publicationDate":"2026-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146137290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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International dental journal
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