口腔自然牙釉质面与牙合牙釉质面龋蚀的比较分析。

IF 4.8 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of dentistry Pub Date : 2025-06-01 DOI:10.1016/j.jdent.2025.105864

Abdullah Almansour , Owen Addison , Aaron LeBlanc , David Bartlett

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引用次数: 0

摘要

目的：通过评估台阶高度的变化，比较口腔和咬合表面天然牙釉质对侵蚀的敏感性。方法：采集无龋、未出牙的人磨牙牙釉质标本20份。从相同的牙齿制备成对的颊和咬合标本（各10个），安装在定制设计的钴铬模具中，随机分配到各组。样品使用0.3 wt.%柠檬酸（pH值2.7）进行酸挑战，累积持续时间为10、20、40和60分钟。使用白光轮廓术和扫描电子显微镜（SEM）测量表面变化，扫描电子显微镜用于检查配对表面之间的超微结构差异。结果：10、20、40、60分钟颊面平均步高损失分别为5.36±4.80µm、8.67±6.05µm、18.69±10.19µm、25.50±11.72µm。相应时间点的咬合面损失分别为6.30±2.58µm、9.18±4.17µm、25.92±6.38µm和33.84±11.48µm。尽管咬合面平均步高损失持续较高，但差异无统计学意义（p = 0.055）。线性回归分析显示，两种牙釉质表面均具有显著的正斜坡(p结论：尽管超微结构存在差异，但天然牙釉质和咬合牙釉质表面对侵蚀的易感性相似，表明临床侵蚀模式可能更多地由环境因素而非表面固有特性引起。意义：本研究介绍了一种新的方法来分析天然牙釉质表面的牙齿磨损，使用定制的模具作为参考。研究结果表明，尽管口腔和咬合表面的超微结构特征不同，但它们在体外表现出相似的侵蚀敏感性。这意味着观察到的侵蚀模式的临床差异可能更多地受到环境因素的影响，而不是固有的表面特性。

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Comparative analysis of dental erosion on natural buccal and occlusal enamel surfaces

Objectives

To compare the susceptibility of natural enamel on buccal and occlusal surfaces to erosion by assessing step-height changes.

Methods

Twenty enamel samples were obtained from caries-free, unerupted human molars. Paired buccal and occlusal specimens (n = 10 each) were prepared from the same teeth and mounted in custom-designed cobalt-chrome moulds and randomly assigned to the groups. Samples underwent acid challenges using 0.3 wt. % citric acid (pH 2.7) for cumulative durations of 10, 20, 40, and 60 min. Surface changes were measured using white light profilometry and scanning electron microscopy (SEM) used to examine the ultrastructural differences between paired surfaces.

Results

Mean step-height loss for buccal surfaces at 10, 20, 40, and 60 min was 5.36 ± 4.80 µm, 8.67 ± 6.05 µm, 18.69 ± 10.19 µm, and 25.50 ± 11.72 µm respectively. Occlusal surfaces showed losses of 6.30 ± 2.58 µm, 9.18 ± 4.17 µm, 25.92 ± 6.38 µm, and 33.84 ± 11.48 µm at corresponding timepoints. Despite consistently higher mean step-height loss in occlusal surfaces, differences were not statistically significant (p = 0.055). Linear regression analysis revealed significant positive slopes for both surfaces (p < 0.0001) with no significant difference between slopes (p = 0.06).

Conclusion

Natural buccal and occlusal enamel surfaces showed similar susceptibility to erosion despite ultrastructural differences, indicating clinical erosion patterns may result more from environmental factors than inherent surface properties.

Significance

This study introduces a novel methodology for analysing tooth wear on natural enamel surfaces using a custom-built mould as a reference. The findings suggest that buccal and occlusal surfaces exhibit similar erosion susceptibility in vitro, despite their varying ultrastructural characteristics. This implies that observed clinical differences in erosion patterns may be influenced more by environmental factors than inherent surface properties.

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来源期刊

Journal of dentistry 医学-牙科与口腔外科

CiteScore

7.30

自引率

11.40%

发文量

349

审稿时长

35 days

期刊介绍： The Journal of Dentistry has an open access mirror journal The Journal of Dentistry: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The Journal of Dentistry is the leading international dental journal within the field of Restorative Dentistry. Placing an emphasis on publishing novel and high-quality research papers, the Journal aims to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. Topics covered include the management of dental disease, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research. The Journal of Dentistry will publish original scientific research papers including short communications. It is also interested in publishing review articles and leaders in themed areas which will be linked to new scientific research. Conference proceedings are also welcome and expressions of interest should be communicated to the Editor.