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Knowledge, attitudes, and practices of dentists toward geriatric health and nutrition: A pan-India cross-sectional questionnaire-based study 牙医对老年健康和营养的知识、态度和实践:一项泛印度横断面调查问卷研究
Q1 Medicine Pub Date : 2025-11-19 DOI: 10.1016/j.jobcr.2025.11.009
B.T. Pradeep Raja , P.S. Manoharan , E. Rajkumar , G. Ezhumalai

Background

India's rapidly growing geriatric population faces significant oral health and nutritional challenges. Although prosthodontic care can improve dietary intake, dental practitioners' awareness and integration of geriatric nutrition into routine practice remain unclear. Limited data exist on how Indian dentists address these needs in clinical and educational settings.

Objective

This study evaluated the knowledge, attitudes, and practices (KAP) of dental practitioners across India regarding geriatric health and nutrition and identified gaps to inform education, policy, and clinical interventions.

Methods

A cross-sectional survey was conducted among 462 dental practitioners providing prosthodontic care across 21 states. A validated 28-item questionnaire, including three open-ended questions, assessed KAP. Data were analyzed using descriptives, one-way ANOVA, and Post Hoc Bonferroni tests (p ≤ 0.05).

Results

Respondents were aware of nutritional assessment methods (72.1 %) and recognized the importance of dietary counselling (97.8 %). Attitudes were highly positive, with 98.1 % supporting inclusion of geriatric nutrition in curriculum. However, only 52 % routinely assessed nutrition, and 63 % provided diet counselling. Prosthodontists had significantly higher knowledge (77.87 %) and practice scores (65.64 %), while institutional practitioners showed the most positive attitudes (74.12 %). Notably, 70 % reported insufficient training during dental education.

Conclusion

This first pan-India study highlights a substantial gap between knowledge and practice in geriatric nutrition. Despite positive attitudes, routine implementation is limited. Structured curriculum reforms, continuing education, and chairside intervention models are urgently needed to enhance oral and systemic health outcomes in the elderly.

Novelty

This nationwide assessment uniquely identifies educational and practice gaps, offering evidence to guide policy and clinical interventions to improve geriatric dental care in India.
印度快速增长的老年人口面临着重大的口腔健康和营养挑战。虽然修复保健可以改善饮食摄入,但牙科医生的意识和将老年营养纳入日常实践仍不清楚。关于印度牙医如何在临床和教育环境中解决这些需求的数据有限。目的本研究评估了全印度牙科医生在老年健康和营养方面的知识、态度和实践(KAP),并确定了教育、政策和临床干预方面的差距。方法对21个州的462名提供修复护理的牙科医生进行了横断面调查。一个有效的28项问卷,包括三个开放式问题,评估KAP。数据分析采用描述性、单因素方差分析和事后Bonferroni检验(p≤0.05)。结果受访者了解营养评估方法(72.1%),认识到饮食咨询的重要性(97.8%)。态度非常积极,98.1%的人支持将老年营养学纳入课程。然而,只有52%的人定期评估营养状况,63%的人提供饮食咨询。义齿医师的知识水平(77.87%)和实践水平(65.64%)显著高于义齿医师,而机构医师的态度最为积极(74.12%)。值得注意的是,70%的人报告在牙科教育期间培训不足。结论:这项首次泛印度研究突出了老年营养知识与实践之间的巨大差距。尽管态度积极,但常规实施是有限的。迫切需要结构化的课程改革、继续教育和主席干预模式,以提高老年人的口腔和全身健康结果。这项全国性评估独特地确定了教育和实践差距,为指导政策和临床干预措施提供了证据,以改善印度的老年牙科保健。
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引用次数: 0
Evaluation of postoperative pain in patients using 8.25 % sodium hypochlorite compared with 5.25 % sodium hypochlorite using sonic and ultrasonic activation methods after single visit root canal treatment: an in-vivo study 使用8.25%次氯酸钠与使用5.25%次氯酸钠超声和超声激活法进行单次根管治疗后患者术后疼痛的评估:一项体内研究
Q1 Medicine Pub Date : 2025-11-15 DOI: 10.1016/j.jobcr.2025.11.004
Kabir Bulchandani, Shahina Parvez, Lalit Kumar Likhyani, Manoj Kumar Agarwal, Rohit Kumar Khatri, Deepak Goel

Introduction

The aim of this study was to evaluate the postoperative pain in patients using 8.25 % sodium hypochlorite compared to 5.25 % Sodium Hypochlorite concentration without activation and using sonic and ultrasonic activation methods after single visit root canal treatment.

Methods

In this double blind randomized trial, a total of 120 participants mandibular premolar with symptomatic irreversible pulpitis were included and randomly divided into 6 groups based on the different concentration of sodium hypochlorite and activation methods (sonic & ultrasonic activation) i.e. Group 1: 5.25 % NaOCl with no activation method, Group 2: 8.25 % NaOCl with no activation method, Group 3: 5.25 % NaOCl with sonic activation, Group 4: 5.25 % NaOCl with Ultrasonic activation, Group 5: 8.25 % NaOCl with sonic activation, Group 6: 8.25 % NaOCl with ultrasonic activation. The presence of postoperative pain was assessed 24, 48, and 72 h after treatment and recorded using the visual analogue scale (VAS).

Results

Intragroup postoperative pain in all six groups reduced after 24 h, 48 h and 72 h, showing statistically significant differences. At all-time intervals, postoperative pain was higher in the groups that used ultrasonic stimulation.

Conclusion

At all-time intervals, there was no significant difference in the presence of postoperative pain between the 8.25 % NaOCl and 5.25 % NaOCl irrigation solutions with no activation method and sonic activation compared to ultrasonic activation.
本研究的目的是评价使用8.25%次氯酸钠与使用5.25%次氯酸钠无激活、超声和超声激活方法的患者在单次根管治疗后的术后疼痛。方法采用双盲随机试验方法,选取120例有症状的不可逆性牙髓炎的下颌前磨牙患者,根据次氯酸钠浓度和激活方式(超声和超声激活)的不同,随机分为6组:1组:5.25% NaOCl无激活,2组:8.25% NaOCl无激活,3组:5.25% NaOCl有声音激活,4组:5.25% NaOCl有声音激活。5.25% NaOCl超声活化,第5组:8.25% NaOCl超声活化,第6组:8.25% NaOCl超声活化。分别在治疗后24、48、72 h评估患者的术后疼痛情况,并采用视觉模拟评分(VAS)进行记录。结果各组术后24 h、48 h、72 h疼痛均减轻,差异有统计学意义。在所有时间间隔内,使用超声刺激组的术后疼痛更高。结论8.25% NaOCl冲洗液与5.25% NaOCl冲洗液无激活、超声激活与超声激活在术后疼痛发生率上无显著性差异。
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引用次数: 0
Biogenic synthesis of copper oxide nanoparticles using Alpinia calcarata extract promotes osteoblasts differentiation: An In vitro study 利用calcalata提取物生物合成氧化铜纳米颗粒促进成骨细胞分化:一项体外研究
Q1 Medicine Pub Date : 2025-11-14 DOI: 10.1016/j.jobcr.2025.11.007
Rathika Ravi , Deepavalli Arumuganainar

Background

Copper-based biomaterials are increasingly investigated for bone tissue engineering due to their osteogenic and angiogenic properties. Green synthesis using plant extracts offers an eco-friendly route for producing biocompatible nanoparticles. This study aimed to synthesize copper oxide nanoparticles (CuO NPs) using Alpinia calcarata leaf extract and evaluate their cytocompatibility and osteogenic potential in vitro.

Methods

CuO NPs were synthesized by reacting copper nitrate trihydrate with A. calcarata leaf extract under alkaline conditions, followed by calcination. The nanoparticles were characterized using SEM, TEM, XRD, and FTIR to confirm morphology, crystallinity, and functional group interactions. C3H10T1/2 murine mesenchymal stem cells were used to assess cytocompatibility (MTT assay, FDA staining), osteogenic differentiation (Alizarin Red S staining and quantification), and gene expression (qRT-PCR for Runx2, Col-I, and ALP).

Results

SEM and TEM revealed aggregated, spherical nanoparticles of <100 nm, while XRD confirmed crystalline monoclinic CuO and FTIR indicated phytochemical capping. MTT and FDA assays showed CuO NPs were cytocompatible up to 50 μg/mL, with dose-dependent cytotoxicity observed at higher concentrations. Under osteogenic conditions, cells treated with 50 μg/mL CuO NPs displayed significantly enhanced mineral deposition compared to controls. Gene expression analysis demonstrated upregulation of Runx2, Col-I, and ALP, confirming promotion of osteogenic differentiation.

Conclusion

Biogenically synthesized CuO NPs using A. calcarata extract are structurally pure, biocompatible at defined concentrations, and capable of enhancing osteoblast differentiation by stimulating matrix mineralization and osteogenic gene expression. These findings position A. calcarata–mediated CuO NPs as sustainable, multifunctional nanomaterials with promising applications in bone tissue engineering.
铜基生物材料由于其成骨和血管生成的特性,在骨组织工程中受到越来越多的研究。利用植物提取物的绿色合成为生产生物相容性纳米颗粒提供了一条环保的途径。本研究旨在利用calcarata叶片提取物合成氧化铜纳米颗粒(CuO NPs),并评价其体外细胞相容性和成骨潜能。方法用三水合硝酸铜与牛角蒿叶提取物在碱性条件下反应,煅烧后合成硫酸氢氧化酶NPs。采用SEM、TEM、XRD和FTIR对纳米颗粒进行了表征,以确定其形貌、结晶度和官能团相互作用。使用C3H10T1/2小鼠间充质干细胞评估细胞相容性(MTT法,FDA染色)、成骨分化(茜素红S染色和定量)和基因表达(qRT-PCR检测Runx2、col - 1和ALP)。结果扫描电镜(sem)和透射电镜(TEM)检测到100 nm大小的球状CuO颗粒,XRD检测到CuO呈单斜晶状,FTIR检测到CuO呈植物化学盖层。MTT和FDA检测表明,CuO NPs在50 μg/mL浓度下具有细胞相容性,且在较高浓度下呈剂量依赖性细胞毒性。在成骨条件下,与对照组相比,50 μg/mL CuO NPs处理的细胞显示出明显增强的矿物质沉积。基因表达分析显示Runx2、col - 1和ALP上调,证实促进成骨分化。结论用牛角草提取物生物合成的CuO NPs结构纯净,在一定浓度下具有生物相容性,并能通过刺激基质矿化和成骨基因表达促进成骨细胞分化。这些发现表明,鹿角藻介导的CuO纳米粒子是一种可持续的、多功能的纳米材料,在骨组织工程中具有广阔的应用前景。
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引用次数: 0
Functional recovery of demineralized dentin using a glutamic acid-modified electrospun scaffold: A multimodal in vitro characterization 谷氨酸修饰的电纺丝支架用于脱矿牙本质的功能恢复:多模态体外表征
Q1 Medicine Pub Date : 2025-11-14 DOI: 10.1016/j.jobcr.2025.11.005
Aruna Krishnan , Sandhya Raghu , Govindaraj Perumal , Jayalakshmi Somasundaram , Nishitha Arun

Background

Dentin remineralization poses a significant challenge in restorative dentistry due to the complex structure and mineral-organic composition of dentin. Electrospun nanofibrous scaffolds present a biomimetic platform to facilitate mineral deposition. Functionalization of the scaffold, achieved through the incorporation of biomolecules like glutamic acid, which mimics non-collagenous proteins, may improve remineralization.

Objective

To assess the remineralization potential of a glutamic acid-loaded polycaprolactone/nanohydroxyapatite (PCL/nHA/Glu) scaffold on acid-demineralized dentin, through surface and mechanical characterization.

Methods

Nanofibrous scaffolds of PCL/nHA and PCL/nHA/Glu were fabricated and applied to demineralized human dentin discs. The samples were immersed in simulated body fluid for 7, 14, and 28 days. Changes in morphology and composition were analyzed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). Surface topography was assessed by atomic force microscopy (AFM), and mechanical properties were evaluated via nanoindentation, with statistical analysis conducted using one-way ANOVA.

Results

SEM imaging showed progressive mineral deposition in both scaffold groups, with the PCL/nHA/Glu group demonstrating organized crystallite formation and almost complete tubule occlusion by Day 28. EDS indicated earlier and higher Ca and P incorporation in the PCL/nHA/Glu group. AFM showed significant reductions in surface roughness later, while nanoindentation revealed increased elastic modulus and hardness in the PCL/nHA/Glu group by Day 14, indicating mechanical recovery.

Conclusion

Glutamic acid-functionalized scaffolds significantly enhanced the remineralization of demineralized dentin, promoting organized mineral deposition and restoration of mechanical properties. These findings support using amino acid-modified scaffolds in dentin tissue engineering.

Clinical significance

Functionalization with amino acids is crucial for mimicking the activity of non-collagenous proteins, transforming passive ion delivery systems into bioactive platforms for dentin regeneration. These scaffolds could serve as alternatives to traditional materials in restorative dentistry, aiding in the treatment of dental caries, dentin hypersensitivity, and enhancing pulp vitality and regeneration.
由于牙本质复杂的结构和矿物质有机组成,牙本质再矿化是修复性牙科的一个重大挑战。静电纺丝纳米纤维支架提供了一种促进矿物沉积的仿生平台。支架的功能化,通过加入生物分子如谷氨酸来实现,它可以模拟非胶原蛋白,可以改善再矿化。目的通过表面和力学表征,评价谷氨酸负载聚己内酯/纳米羟基磷灰石(PCL/nHA/Glu)支架在酸脱矿牙本质上的再矿化潜力。方法制备PCL/nHA和PCL/nHA/Glu纳米纤维支架,应用于脱矿人牙本质盘。将样品浸泡在模拟体液中7、14和28天。利用扫描电镜(SEM)和能量色散x射线能谱(EDS)分析了形貌和成分的变化。通过原子力显微镜(AFM)评估表面形貌,通过纳米压痕评估力学性能,并使用单因素方差分析进行统计分析。结果扫描电镜成像显示两组支架均有进行性矿物沉积,PCL/nHA/Glu组在第28天显示有组织的晶体形成和几乎完全的小管闭塞。EDS显示PCL/nHA/Glu组Ca、P的掺入时间早、含量高。AFM显示表面粗糙度显著降低,而纳米压痕显示PCL/nHA/Glu组的弹性模量和硬度在第14天增加,表明机械恢复。结论谷氨酸功能化支架能显著增强脱矿牙本质的再矿化,促进牙本质有组织的矿物质沉积,恢复牙本质的力学性能。这些发现支持了氨基酸修饰支架在牙本质组织工程中的应用。氨基酸功能化对于模拟非胶原蛋白的活性,将被动离子传递系统转化为牙本质再生的生物活性平台至关重要。这些支架可以作为传统牙科修复材料的替代品,有助于治疗龋齿,牙本质过敏,增强牙髓活力和再生。
{"title":"Functional recovery of demineralized dentin using a glutamic acid-modified electrospun scaffold: A multimodal in vitro characterization","authors":"Aruna Krishnan ,&nbsp;Sandhya Raghu ,&nbsp;Govindaraj Perumal ,&nbsp;Jayalakshmi Somasundaram ,&nbsp;Nishitha Arun","doi":"10.1016/j.jobcr.2025.11.005","DOIUrl":"10.1016/j.jobcr.2025.11.005","url":null,"abstract":"<div><h3>Background</h3><div>Dentin remineralization poses a significant challenge in restorative dentistry due to the complex structure and mineral-organic composition of dentin. Electrospun nanofibrous scaffolds present a biomimetic platform to facilitate mineral deposition. Functionalization of the scaffold, achieved through the incorporation of biomolecules like glutamic acid, which mimics non-collagenous proteins, may improve remineralization.</div></div><div><h3>Objective</h3><div>To assess the remineralization potential of a glutamic acid-loaded polycaprolactone/nanohydroxyapatite (PCL/nHA/Glu) scaffold on acid-demineralized dentin, through surface and mechanical characterization.</div></div><div><h3>Methods</h3><div>Nanofibrous scaffolds of PCL/nHA and PCL/nHA/Glu were fabricated and applied to demineralized human dentin discs. The samples were immersed in simulated body fluid for 7, 14, and 28 days. Changes in morphology and composition were analyzed using scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS). Surface topography was assessed by atomic force microscopy (AFM), and mechanical properties were evaluated via nanoindentation, with statistical analysis conducted using one-way ANOVA.</div></div><div><h3>Results</h3><div>SEM imaging showed progressive mineral deposition in both scaffold groups, with the PCL/nHA/Glu group demonstrating organized crystallite formation and almost complete tubule occlusion by Day 28. EDS indicated earlier and higher Ca and P incorporation in the PCL/nHA/Glu group. AFM showed significant reductions in surface roughness later, while nanoindentation revealed increased elastic modulus and hardness in the PCL/nHA/Glu group by Day 14, indicating mechanical recovery.</div></div><div><h3>Conclusion</h3><div>Glutamic acid-functionalized scaffolds significantly enhanced the remineralization of demineralized dentin, promoting organized mineral deposition and restoration of mechanical properties. These findings support using amino acid-modified scaffolds in dentin tissue engineering.</div></div><div><h3>Clinical significance</h3><div>Functionalization with amino acids is crucial for mimicking the activity of non-collagenous proteins, transforming passive ion delivery systems into bioactive platforms for dentin regeneration. These scaffolds could serve as alternatives to traditional materials in restorative dentistry, aiding in the treatment of dental caries, dentin hypersensitivity, and enhancing pulp vitality and regeneration.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"16 1","pages":"Pages 73-82"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development and validation of a machine learning model to predict mandibular third molar impaction and associated complications: A retrospective observational study 预测下颌第三磨牙嵌塞及相关并发症的机器学习模型的开发和验证:一项回顾性观察研究
Q1 Medicine Pub Date : 2025-11-14 DOI: 10.1016/j.jobcr.2025.10.026
Nancy Jidiya , Parth Rathi , Sravanthi Ennala , Anulatha Manne , C.P. Muhammed Faiz , T.H. Farzhana , Shikhar Daniel

Background

Impacted mandibular third molars are common worldwide and may cause complications such as pericoronitis, cysts, and second molar caries. Conventional prediction methods rely on subjective radiographic interpretations and clinical judgment, which can vary among practitioners. Recent advances in machine learning (ML) provide opportunities to develop objective, data-driven models for clinical decision-making in third molar management.

Aim

To develop and validate a machine learning–based model for predicting mandibular third molar impaction and associated complications using demographic and radiographic variables.

Methods

This retrospective observational study evaluated 220 panoramic radiographs of patients aged 16–40 years. Collected variables included age, sex, tooth angulation, Pell and Gregory classification, depth of impaction, root development, ramus relationship, and proximity to the mandibular canal. Logistic regression, random forest, and XGBoost were trained on 70 % of the dataset and validated on 30 %. Model performance was assessed using AUC-ROC, accuracy, sensitivity, specificity, calibration, and Cohen's Kappa for agreement with expert judgment.

Results

Impaction prevalence was 67.3 %. Significant predictors included mesioangular angulation, Pell and Gregory Class II, and incomplete root development (p < 0.001). XGBoost outperformed other models, achieving an AUC-ROC of 0.92, accuracy of 90.5 %, and Kappa of 0.82. Pericoronitis (26 %) and distal second molar caries (18 %) were the most common complications.

Conclusion

XGBoost demonstrated high predictive accuracy for mandibular third molar impaction and complications. As a probability-based decision-support tool, it can provide individualized risk estimates or binary classifications to assist clinicians in counseling, surveillance, and surgical decision-making.
背景:下颌第三磨牙的磨蚀在世界范围内是很常见的,并且可能引起诸如冠周炎、囊肿和第二磨牙龋齿等并发症。传统的预测方法依赖于主观的放射学解释和临床判断,这可能因从业者而异。机器学习(ML)的最新进展为第三磨牙管理的临床决策提供了开发客观、数据驱动模型的机会。目的开发并验证基于机器学习的模型,利用人口统计学和放射学变量预测下颌第三磨牙嵌塞和相关并发症。方法回顾性观察220例16 ~ 40岁患者的全景x线片。收集的变量包括年龄、性别、牙齿角度、Pell和Gregory分类、嵌塞深度、牙根发育、支的关系以及与下颌管的接近程度。逻辑回归、随机森林和XGBoost在70%的数据集上进行训练,并在30%的数据集上进行验证。采用AUC-ROC、准确性、敏感性、特异性、校准和Cohen’s Kappa来评估模型的性能是否与专家判断一致。结果压实率为67.3%。显著的预测因子包括中角角度、Pell和Gregory II类和不完全根发育(p < 0.001)。XGBoost优于其他模型,AUC-ROC为0.92,准确率为90.5%,Kappa为0.82。冠周炎(26%)和远端第二磨牙龋(18%)是最常见的并发症。结论xgboost对下颌第三磨牙嵌塞及其并发症具有较高的预测准确性。作为一种基于概率的决策支持工具,它可以提供个性化的风险估计或二元分类,以协助临床医生进行咨询、监测和手术决策。
{"title":"Development and validation of a machine learning model to predict mandibular third molar impaction and associated complications: A retrospective observational study","authors":"Nancy Jidiya ,&nbsp;Parth Rathi ,&nbsp;Sravanthi Ennala ,&nbsp;Anulatha Manne ,&nbsp;C.P. Muhammed Faiz ,&nbsp;T.H. Farzhana ,&nbsp;Shikhar Daniel","doi":"10.1016/j.jobcr.2025.10.026","DOIUrl":"10.1016/j.jobcr.2025.10.026","url":null,"abstract":"<div><h3>Background</h3><div>Impacted mandibular third molars are common worldwide and may cause complications such as pericoronitis, cysts, and second molar caries. Conventional prediction methods rely on subjective radiographic interpretations and clinical judgment, which can vary among practitioners. Recent advances in machine learning (ML) provide opportunities to develop objective, data-driven models for clinical decision-making in third molar management.</div></div><div><h3>Aim</h3><div>To develop and validate a machine learning–based model for predicting mandibular third molar impaction and associated complications using demographic and radiographic variables.</div></div><div><h3>Methods</h3><div>This retrospective observational study evaluated 220 panoramic radiographs of patients aged 16–40 years. Collected variables included age, sex, tooth angulation, Pell and Gregory classification, depth of impaction, root development, ramus relationship, and proximity to the mandibular canal. Logistic regression, random forest, and XGBoost were trained on 70 % of the dataset and validated on 30 %. Model performance was assessed using AUC-ROC, accuracy, sensitivity, specificity, calibration, and Cohen's Kappa for agreement with expert judgment.</div></div><div><h3>Results</h3><div>Impaction prevalence was 67.3 %. Significant predictors included mesioangular angulation, Pell and Gregory Class II, and incomplete root development (p &lt; 0.001). XGBoost outperformed other models, achieving an AUC-ROC of 0.92, accuracy of 90.5 %, and Kappa of 0.82. Pericoronitis (26 %) and distal second molar caries (18 %) were the most common complications.</div></div><div><h3>Conclusion</h3><div>XGBoost demonstrated high predictive accuracy for mandibular third molar impaction and complications. As a probability-based decision-support tool, it can provide individualized risk estimates or binary classifications to assist clinicians in counseling, surveillance, and surgical decision-making.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"16 1","pages":"Pages 83-92"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of chlorogenic acids and melanoidin interactions with salivary proteins and their effect on tooth discoloration 评价绿原酸和类黑素与唾液蛋白的相互作用及其对牙齿变色的影响
Q1 Medicine Pub Date : 2025-11-14 DOI: 10.1016/j.jobcr.2025.11.006
Trianna Wahyu Utami , Muhammad Raka Aqila Zaky , Margareta Rinastiti , Diatri Nari Ratih , Sri Budi Barunawati , Nunuk Purwanti , Yosi Bayu Murti

Background

Tooth discoloration is a multifactorial process that is significantly influenced by the interaction between dietary polyphenols and salivary proteins. This study investigates coffee-induced discoloration using in vitro staining models and in silico simulations.

Materials and methods

For 14 days, human premolar teeth were soaked in coffee solution (27 g/450 mL) with daily replacement. Lab and ΔE measurements were used to quantify color changes before and after immersion using ultraviolet–visible spectroscopy. Melanoidin compounds docked with salivary proteins (statherin, histatin, and proline-rich protein [PRP]). Hex 8.0 was used for molecular docking, whereas Discovery Studio Visualizer and UCSF Chimera were used for molecular dynamics analysis.

Results

Molecular docking revealed the strong binding affinity of chlorogenic acid with PRP (−251.66 kJ/mol), histatin (−245.4 kJ/mol), and statherin (−240.5 kJ/mol), stabilized by hydrogen bonds with glycine/arginine/tyrosine residues. The molecular dynamics simulations confirmed complex stability with statherin (RMSD 4.2–4.6 Å) and histatin (RMSD 4.4–4.6 Å). Chromameter analysis showed significant color changes after coffee exposure (ΔEab = 12.286 ± 3.645), with a decrease in lightness (L: 83.569 → 71.873) and an increase in redness (a*: 1.375 → 2.992) and yellowness (b*: 15.848 → 18.585). Paired samples correlation analysis revealed statistically significant changes in the a* and b* values (p < 0.001), while the L* value showed no significant change (p = 0.257).

Conclusion

Chlorogenic acid drives discoloration through stable protein interactions and measurable color shifts, suggesting that targeted inhibition of these molecular pathways could prevent coffee-induced discoloration.
背景:牙齿变色是一个多因素的过程,主要受膳食多酚和唾液蛋白相互作用的影响。本研究使用体外染色模型和计算机模拟来研究咖啡诱导的变色。材料与方法将人前磨牙用咖啡溶液(27 g/450 mL)浸泡14 d,每天更换一次。实验室和ΔE测量使用紫外可见光谱学来量化浸泡前后的颜色变化。类黑素化合物与唾液蛋白(脂肪蛋白、组蛋白和富含脯氨酸的蛋白[PRP])对接。使用Hex 8.0进行分子对接,使用Discovery Studio Visualizer和UCSF Chimera进行分子动力学分析。结果分子对接显示绿原酸与PRP(−251.66 kJ/mol)、组蛋白(−245.4 kJ/mol)和石脂蛋白(−240.5 kJ/mol)具有较强的结合亲和力,并通过与甘氨酸/精氨酸/酪氨酸残基的氢键稳定。分子动力学模拟证实了与startherin (RMSD 4.2-4.6 Å)和组蛋白(RMSD 4.4-4.6 Å)的复合物稳定性。色度分析显示,咖啡暴露后颜色变化显著(ΔEab = 12.286±3.645),亮度降低(L: 83.569→71.873),红度增加(a*: 1.375→2.992),黄度增加(b*: 15.848→18.585)。配对样本相关分析显示,a*和b*值变化有统计学意义(p < 0.001), L*值变化无统计学意义(p = 0.257)。结论绿原酸通过稳定的蛋白质相互作用和可测量的颜色变化来驱动变色,表明有针对性地抑制这些分子途径可以预防咖啡诱导的变色。
{"title":"Evaluation of chlorogenic acids and melanoidin interactions with salivary proteins and their effect on tooth discoloration","authors":"Trianna Wahyu Utami ,&nbsp;Muhammad Raka Aqila Zaky ,&nbsp;Margareta Rinastiti ,&nbsp;Diatri Nari Ratih ,&nbsp;Sri Budi Barunawati ,&nbsp;Nunuk Purwanti ,&nbsp;Yosi Bayu Murti","doi":"10.1016/j.jobcr.2025.11.006","DOIUrl":"10.1016/j.jobcr.2025.11.006","url":null,"abstract":"<div><h3>Background</h3><div>Tooth discoloration is a multifactorial process that is significantly influenced by the interaction between dietary polyphenols and salivary proteins. This study investigates coffee-induced discoloration using in vitro staining models and in silico simulations.</div></div><div><h3>Materials and methods</h3><div>For 14 days, human premolar teeth were soaked in coffee solution (27 g/450 mL) with daily replacement. Lab and ΔE measurements were used to quantify color changes before and after immersion using ultraviolet–visible spectroscopy. Melanoidin compounds docked with salivary proteins (statherin, histatin, and proline-rich protein [PRP]). Hex 8.0 was used for molecular docking, whereas Discovery Studio Visualizer and UCSF Chimera were used for molecular dynamics analysis.</div></div><div><h3>Results</h3><div>Molecular docking revealed the strong binding affinity of chlorogenic acid with PRP (−251.66 kJ/mol), histatin (−245.4 kJ/mol), and statherin (−240.5 kJ/mol), stabilized by hydrogen bonds with glycine/arginine/tyrosine residues. The molecular dynamics simulations confirmed complex stability with statherin (RMSD 4.2–4.6 Å) and histatin (RMSD 4.4–4.6 Å). Chromameter analysis showed significant color changes after coffee exposure (ΔEab = 12.286 ± 3.645), with a decrease in lightness (L: 83.569 → 71.873) and an increase in redness (a*: 1.375 → 2.992) and yellowness (b*: 15.848 → 18.585). Paired samples correlation analysis revealed statistically significant changes in the a* and b* values (p &lt; 0.001), while the L* value showed no significant change (p = 0.257).</div></div><div><h3>Conclusion</h3><div>Chlorogenic acid drives discoloration through stable protein interactions and measurable color shifts, suggesting that targeted inhibition of these molecular pathways could prevent coffee-induced discoloration.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"16 1","pages":"Pages 93-100"},"PeriodicalIF":0.0,"publicationDate":"2025-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Lateral stress distribution analysis on hafnium metal bar for implant superstructure- A finite element analysis 种植体上部结构金属铪棒横向应力分布分析-有限元分析
Q1 Medicine Pub Date : 2025-11-11 DOI: 10.1016/j.jobcr.2025.11.003
Budati Meghna , Vaishnavi Rajaraman , Padma Ariga , Saravanan Sekaran , K Lokesh sai

Background

The mechanical behavior of implant-supported prostheses is strongly influenced by the material properties of the bar framework, particularly under lateral masticatory loading. While titanium and cobalt–chromium are established materials, alternatives such as polyetheretherketone (PEEK) and hafnium may offer distinct biomechanical advantages. The aim of this study was to compare the lateral stress distribution in implant-supported prostheses fabricated with four different bar materials using finite element analysis.

Method

ology: A three-dimensional finite element analysis (FEA) was conducted on a mandibular edentulous model with four endosseous implants arranged in an All-on-4 configuration. Four groups were evaluated based on bar material: titanium (Ti), cobalt–chromium (CoCr), polyetheretherketone (PEEK), and hafnium (Hf). A total of four simulation models were created, each subjected to a 100 N anterior and 300 N posterior lateral load. Von Mises stresses were analyzed in the bar, abutments, screws, and peri-implant bone.

Results

PEEK recorded the lowest stress in the bar (∼25 MPa) and peri-implant bone but induced elevated stresses in the abutment (348 MPa) and screw (288 MPa). CoCr showed the highest stress within the bar (∼114 MPa) with lower values in other components. Titanium and hafnium presented a balanced stress profile, with no region exceeding 300 MPa. Hafnium closely mirrored titanium's biomechanical response, demonstrating efficient load distribution without critical stress concentrations.

Conclusion

Bar material significantly affects lateral stress distribution in implant-supported prostheses. Hafnium displayed biomechanical behavior comparable to titanium, indicating its promise as a potential alternative framework material. Further in vitro and clinical validation is warranted.
种植体支撑的假体的力学行为受到棒骨架材料特性的强烈影响,特别是在侧咀嚼载荷下。虽然钛和钴铬是公认的材料,但聚醚醚酮(PEEK)和铪等替代品可能具有独特的生物力学优势。本研究的目的是利用有限元分析比较四种不同棒体材料制作的种植体支撑假体的侧向应力分布。方法:对下颌无牙模型进行了三维有限元分析(FEA),该模型采用4个种植体以All-on-4形态排列。根据棒材材料分为四组:钛(Ti)、钴铬(CoCr)、聚醚醚酮(PEEK)和铪(Hf)。共创建了4个模拟模型,每个模型均承受100 N的前侧向载荷和300 N的后侧向载荷。对支棒、基台、螺钉和种植体周围骨进行Von Mises应力分析。结果speek检测到的应力在牙棒和种植周骨中最低(~ 25 MPa),但在基牙(348 MPa)和螺钉(288 MPa)中引起应力升高。CoCr在棒材内的应力最高(~ 114 MPa),其他部位的应力较低。钛和铪的应力分布较为均匀,没有超过300 MPa的区域。铪紧密反映了钛的生物力学响应,在没有临界应力集中的情况下显示出有效的负载分布。结论bar材料对种植体修复体的侧应力分布有显著影响。铪表现出与钛相当的生物力学行为,表明它有望成为潜在的替代框架材料。进一步的体外和临床验证是必要的。
{"title":"Lateral stress distribution analysis on hafnium metal bar for implant superstructure- A finite element analysis","authors":"Budati Meghna ,&nbsp;Vaishnavi Rajaraman ,&nbsp;Padma Ariga ,&nbsp;Saravanan Sekaran ,&nbsp;K Lokesh sai","doi":"10.1016/j.jobcr.2025.11.003","DOIUrl":"10.1016/j.jobcr.2025.11.003","url":null,"abstract":"<div><h3>Background</h3><div>The mechanical behavior of implant-supported prostheses is strongly influenced by the material properties of the bar framework, particularly under lateral masticatory loading. While titanium and cobalt–chromium are established materials, alternatives such as polyetheretherketone (PEEK) and hafnium may offer distinct biomechanical advantages. The aim of this study was to compare the lateral stress distribution in implant-supported prostheses fabricated with four different bar materials using finite element analysis.</div></div><div><h3>Method</h3><div>ology: A three-dimensional finite element analysis (FEA) was conducted on a mandibular edentulous model with four endosseous implants arranged in an All-on-4 configuration. Four groups were evaluated based on bar material: titanium (Ti), cobalt–chromium (CoCr), polyetheretherketone (PEEK), and hafnium (Hf). A total of four simulation models were created, each subjected to a 100 N anterior and 300 N posterior lateral load. Von Mises stresses were analyzed in the bar, abutments, screws, and peri-implant bone.</div></div><div><h3>Results</h3><div>PEEK recorded the lowest stress in the bar (∼25 MPa) and peri-implant bone but induced elevated stresses in the abutment (348 MPa) and screw (288 MPa). CoCr showed the highest stress within the bar (∼114 MPa) with lower values in other components. Titanium and hafnium presented a balanced stress profile, with no region exceeding 300 MPa. Hafnium closely mirrored titanium's biomechanical response, demonstrating efficient load distribution without critical stress concentrations.</div></div><div><h3>Conclusion</h3><div>Bar material significantly affects lateral stress distribution in implant-supported prostheses. Hafnium displayed biomechanical behavior comparable to titanium, indicating its promise as a potential alternative framework material. Further in vitro and clinical validation is warranted.</div></div>","PeriodicalId":16609,"journal":{"name":"Journal of oral biology and craniofacial research","volume":"16 1","pages":"Pages 52-58"},"PeriodicalIF":0.0,"publicationDate":"2025-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145527672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dual pathway activation in wound repair: An in vitro study of betanin and theaflavin on periodontal ligament fibroblasts 伤口修复的双通路激活:甜菜素和茶黄素对牙周韧带成纤维细胞的体外研究
Q1 Medicine Pub Date : 2025-11-11 DOI: 10.1016/j.jobcr.2025.10.020
Arwa Alihusain Kapasi , Taniya Mary Martin , Meenakshi Sundaram Kishore Kumar , Jayalakshmi Somasundaram , Kommireddy Vaishnavi

Background

Wound healing is a highly coordinated biological process involving inflammation resolution and neovascularization. Dysregulation of these processes can result in chronic wounds, especially in inflammatory or oxidative stress–rich environments. There is growing interest in natural compounds that can simultaneously promote angiogenesis and suppress inflammation to enhance wound healing outcomes.

Objective

This study aims to evaluate the synergistic wound-healing effects of betanin and theaflavin in vitro by assessing their ability to enhance cell viability, migration, and gene expression related to inflammation and angiogenesis in human periodontal ligament (PDL) fibroblasts.

Methods

PDL fibroblasts were treated with betanin, theaflavin, and their combinations at two concentrations (viz., 1, 5, 10, 25, 50, 75, 100, 125 μg/mL) were preliminary screened by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay and based on the IC50 values, further tested with two concentrations (10 μg/mL and 25 μg/mL, individually and in combination). The scratch assay was employed to evaluate fibroblast migration. To assess molecular changes, qRT-PCR was performed to quantify expression levels of VEGF-A, HIF-1α, NF-κB, IκBα, and IL-10.

Results

Combination treatment significantly enhanced cell viability and wound closure compared to individual treatments and controls. Gene expression analysis showed increased expression of VEGF-A and HIF-1α, indicating improved angiogenic potential. Concurrently, NF-κB expression was reduced, while IκBα and IL-10 were upregulated, indicating anti-inflammatory activity.

Conclusion

The combined use of betanin and theaflavin enhances in vitro wound healing by promoting angiogenesis and modulating inflammatory responses. This integrative strategy may offer a promising natural therapeutic approach for managing tissue repair in oral and dermal wounds.
伤口愈合是一个高度协调的生物过程,涉及炎症消退和新生血管。这些过程的失调可导致慢性伤口,特别是在炎症或氧化应激丰富的环境中。人们对能够同时促进血管生成和抑制炎症以提高伤口愈合效果的天然化合物越来越感兴趣。目的通过观察甜菜素和茶黄素对人牙周韧带成纤维细胞的细胞活力、迁移以及炎症和血管生成相关基因表达的影响,探讨其体外创面愈合的协同作用。方法采用3-(4,5-二甲基噻唑-2-基)-2,5-二苯基溴化四氮唑(MTT)法初步筛选甜菜素、茶黄素及其联用两种浓度(1、5、10、25、50、75、100、125 μg/mL)对spdl成纤维细胞的影响,并根据IC50值,分别以10 μg/mL和25 μg/mL单独和联合使用两种浓度进行检测。采用划痕法评价成纤维细胞的迁移。为了评估分子变化,采用qRT-PCR方法量化VEGF-A、HIF-1α、NF-κB、i -κB α和IL-10的表达水平。结果与单独治疗和对照组相比,联合治疗显著提高了细胞活力和伤口愈合。基因表达分析显示VEGF-A和HIF-1α表达增加,表明血管生成潜力增强。同时,NF-κB表达降低,而i -κB α和IL-10表达上调,显示抗炎活性。结论甜菜素与茶黄素联合应用通过促进血管生成和调节炎症反应促进体外创面愈合。这种综合策略可能为口腔和皮肤伤口的组织修复提供一种有前途的自然治疗方法。
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引用次数: 0
Comparative efficacy of autologous platelet-rich fibrin and collagen membrane on clinical outcomes following vestibuloplasty: A randomized controlled trial 自体富血小板纤维蛋白和胶原膜对前庭成形术后临床结果的比较疗效:一项随机对照试验
Q1 Medicine Pub Date : 2025-11-11 DOI: 10.1016/j.jobcr.2025.10.021
Udita Sharma , Prajakta Rao , Sneh Agrawal , Ruhi Mohta , Rachel R. Changrani , Ritika Kriplani

Background

Adequate vestibular depth and attached gingiva are essential for successful periodontal and prosthetic rehabilitation. Vestibuloplasty is frequently performed to correct shallow vestibules; however, relapse due to scar formation remains a concern. Autologous platelet-rich fibrin (PRF) and collagen membranes are increasingly explored as biological wound dressing materials to improve healing outcomes. This randomized controlled trial compared the clinical efficacy of PRF and collagen membrane following vestibuloplasty.

Materials and methods

Thirty-four systemically healthy patients requiring mandibular anterior vestibuloplasty were randomly allocated into two groups: Group A (PRF, n = 17) and Group B (collagen membrane, n = 17). A standardized surgical protocol and postoperative regimen were followed. Clinical parameters assessed included postoperative pain (Visual Analog Scale), wound healing (Landry Healing Index), vestibular depth (VD), and width of attached gingiva (WAG) at baseline, Day 7, Day 15, 1 month, and 3 months. Statistical analysis was performed using Mann–Whitney U test for intergroup comparisons, and Friedman's test with Wilcoxon signed-rank test for intragroup comparisons. Significance was set at p < 0.05.

Results

PRF significantly reduced postoperative pain at all evaluated time points compared to collagen membrane (p < 0.05). Collagen membrane demonstrated superior wound healing scores on Day 15 and at 3 months (p < 0.05), with comparable outcomes between groups at 1 month. WAG increased significantly in both groups, with no intergroup differences. However, Group B exhibited significantly greater gains in VD at both 1 month (p = 0.002) and 3 months (p = 0.001).

Conclusion

PRF is advantageous in controlling immediate postoperative pain, while collagen membrane provides superior long-term wound healing and vestibular depth augmentation. Both materials are equally effective in maintaining attached gingiva width. The selection of dressing material should be guided by the clinician's primary objective—whether prioritizing postoperative comfort or enhancing regenerative outcomes.
背景:足够的前庭深度和附着的牙龈是成功的牙周修复和修复必不可少的。前庭成形术常用于矫正浅前庭;然而,由于疤痕形成而复发仍然是一个问题。自体富血小板纤维蛋白(PRF)和胶原膜越来越多地被探索作为生物伤口敷料材料,以提高愈合效果。这项随机对照试验比较了前庭成形术后PRF和胶原膜的临床疗效。材料与方法34例全身性健康的下颌前庭成形术患者随机分为两组:A组(PRF, n = 17)和B组(胶原膜,n = 17)。遵循标准化的手术方案和术后治疗方案。临床参数评估包括术后疼痛(视觉模拟量表)、伤口愈合(Landry愈合指数)、前庭深度(VD)和附着龈宽度(WAG)在基线、第7天、第15天、第1个月和第3个月。组间比较采用Mann-Whitney U检验,组内比较采用Friedman检验,组内比较采用Wilcoxon符号秩检验。p <; 0.05为显著性。结果与胶原膜相比,sprf在所有评估时间点均显著减轻了术后疼痛(p < 0.05)。胶原膜在第15天和第3个月表现出更好的伤口愈合评分(p < 0.05), 1个月时两组之间的结果具有可比性。两组WAG均显著升高,组间差异无统计学意义。然而,B组在1个月(p = 0.002)和3个月(p = 0.001)时VD均有显著增加。结论prf在控制术后即刻疼痛方面具有优势,而胶原膜在创面长期愈合和前庭深度增加方面具有优势。两种材料在维持附着牙龈宽度方面同样有效。敷料的选择应以临床医生的主要目标为指导-是否优先考虑术后舒适度或提高再生结果。
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引用次数: 0
Qualitative research in oral health in India: A bibliometric analysis 印度口腔健康的定性研究:文献计量学分析
Q1 Medicine Pub Date : 2025-11-10 DOI: 10.1016/j.jobcr.2025.11.001
Abhishek Mehta , Barsha Priya Deka , Manu Raj Mathur

Background

A qualitative research approach is necessary to understand the complexities of social, behavioral, and systemic factors influencing oral health. Despite having a large dental education infrastructure and workforce, a limited number of studies have been published by Indian dental researchers utilizing a qualitative methodology.

Objective

Map the existing literature to understand the current landscape of qualitative research in oral health in India.

Method

A comprehensive search of prominent databases, along with handsearching, was conducted to shortlist studies based on a predefined criterion. Eligible studies underwent thematic categorization and bibliometric assessment. Keyword co-occurrence and network analysis were performed using VOSviewer software to identify conceptual linkages and emerging research themes.

Results

Sixty-four studies met the inclusion criteria. Of these, 56 % were pure qualitative and 43 % were mixed-methods studies, with most published in the last five years. Key focus areas include tobacco cessation, pediatric oral health, and barriers to accessing dental services. Methodologically, the studies relied heavily on interviews and focus group discussions, with limited theoretical integration. Thematic clusters showed dominance of behavior-focused research and regional disparities in study distribution.

Conclusion

This is the first review to comprehensively chart the evolution of qualitative research in oral health in India. While momentum is growing, significant gaps remain in methodological depth and thematic diversity. Strengthening training, institutional support, and theoretical engagement is essential for advancing qualitative dental research in India.
为了了解影响口腔健康的社会、行为和系统因素的复杂性,定性研究方法是必要的。尽管拥有庞大的牙科教育基础设施和劳动力,印度牙科研究人员利用定性方法发表的研究数量有限。目的绘制现有文献,了解印度口腔健康定性研究的现状。方法根据预先确定的标准,对知名数据库进行全面检索,并进行手工检索,以获得候选研究名单。对符合条件的研究进行专题分类和文献计量学评估。使用VOSviewer软件进行关键词共现和网络分析,以识别概念联系和新兴研究主题。结果64项研究符合纳入标准。其中,56%是纯定性研究,43%是混合方法研究,其中大多数是在最近五年内发表的。重点领域包括戒烟、儿童口腔健康和获得牙科服务的障碍。在方法上,这些研究严重依赖于访谈和焦点小组讨论,理论整合有限。主题聚类显示以行为为中心的研究占主导地位,研究分布存在区域差异。结论本文首次全面回顾了印度口腔健康定性研究的发展历程。虽然势头不断增强,但在方法深度和专题多样性方面仍存在重大差距。加强培训、机构支持和理论参与对于促进印度的定性牙科研究至关重要。
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引用次数: 0
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Journal of oral biology and craniofacial research
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