口腔医学研究

口腔医学研究 ›› 2024, Vol. 40 ›› Issue (6): 496-500.DOI: 10.13701/j.cnki.kqyxyj.2024.06.005

• 龋病牙髓病学研究 • 上一篇    下一篇

Er:YAG激光、渗透树脂和微研磨治疗釉质脱矿的效果对比

曹璇璇1, 姜丹丹2, 仵楠2, 周政2, 代海涛2*   

  1. 1.石河子大学医学院 新疆 石河子 832000;
    2.石河子大学第一附属医院口腔科 新疆 石河子 832000
  • 收稿日期:2023-12-27 出版日期:2024-06-28 发布日期:2024-06-19
  • 通讯作者: * 代海涛,E-mail:48440045@qq.com
  • 作者简介:曹璇璇(1998~ ),女,新疆吐鲁番市人,住院医师,硕士在读,主要从事正畸相关的研究。
  • 基金资助:
    石河子大学第一附属医院青年基金项目(编号:QN202102)

Comparison of Er:YAG Laser, Resin Infiltrating, and Micro-grinding in Treatment of Enamel Demineralization

CAO Xuanxuan1, JIANG Dandan2, WU Nan2, ZHOU Zheng2, DAI Haitao2*   

  1. 1. Medical College, Shihezi University, Shihezi 832000, China;
    2. Department of Stomatology, The First Affiliated Hospital of Medical College, Shihezi University, Shihezi 832000, China
  • Received:2023-12-27 Online:2024-06-28 Published:2024-06-19

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摘要： 目的:对比分析Er:YAG激光、渗透树脂和微研磨治疗釉质脱矿的效果。方法:按照纳排标准选取临床上拔除的新鲜前磨牙48颗,建立体外釉质脱矿模型后,将其随机分为4组:A组为对照组,不作任何处理;B组为微研磨组,对样本进行微研磨处理后表面涂氟;C组为渗透树脂组,样本使用渗透树脂处理;D组为Er:YAG激光组,对样本进行激光照射后表面涂氟;处理完毕后4组样本均浸泡于人工唾液中(每日更换1次),21 d后对4组样本进行二次脱矿处理。分别测量各组处理前(t0)、脱矿后(t1)、治疗处理后(t2)以及二次脱矿处理后(t3)釉质表面的显微硬度和粗糙度,分别通过肉眼和扫描电镜观察样本的治疗效果及表面结构。结果:(1)t0与t1时,4组之间牙釉质显微硬度比较无显著性差异(P>0.05);t2、t3时,C组显微硬度值最大,其次为D组、B组,A组最小;除C组与D组外,其余组间比较差异均有显著性意义(P<0.01);t3时,A组显微硬度值低于t1(P<0.01),其余3组高于t1(P<0.01);(2)t0与t1时,各组之间牙釉质表面粗糙度比较无显著性差异(P>0.05);t2、t3时,C组粗糙度值最小,其次为D组、B组,A组最大;各组之间比较差异均有显著性意义(P<0.01);(3)样本肉眼观察仅C组色泽基本正常;(4)扫描电镜观察发现B、C、D组较A组牙釉质表面空隙明显减少,平滑度也有不同程度的改善。结论:渗透树脂在改善脱矿釉质表面的粗糙度方面优于激光照射;在提高显微硬度效果和抗脱矿稳定性方面明显优于微研磨。

关键词: 釉质脱矿, 渗透树脂, 微研磨, 激光

Abstract: Objective: To compare and analyze the effects of Er:YAG laser, resin infiltration, and micro-grinding on tooth enamel demineralization. Methods: Forty-eight clinically extracted fresh premolars were collected and randomly divided into four groups after establishing artificial demineralization model. Group A was control group. Group B was micro-grinding group. Group C was permeable resin group. And group D was laser group. After 21 days, the four groups of isolated teeth were subjected to secondary demineralization. The microhardness and roughness of enamel surface was measured before treatment (t0), after demineralization (t1), after treatment (t2), and after secondary demineralization (t3). The treatment effect and surface structure of samples were observed by naked eyes and scanning electron microscope. Results: (1) At t0 and t1, there was no significant difference in enamel microhardness among four groups (P>0.05). At t2 and t3, the microhardness of group C was the largest, followed by group D and group B, and group A was the smallest. Except for group C and group D, there were significant differences among other groups (P<0.01). At t3, the microhardness of group A was lower than that at t1 (P<0.01), while those of groups B, C, and D were higher than that at t1 (P<0.01). (2) There was no significant difference in enamel surface roughness between groups at t0 and t1 (P>0.05). At t2 and t3, the roughness value of group C was the smallest, followed by group D and group B, and group A was the largest. There were significant differences among all groups (P<0.01). (3) Only the color of group C was basically normal observed by naked eye. (4) SEM observation showed that the surface voids of enamel in groups B, C, and D were significantly reduced compared with that in group A, and the smoothness was also improved. Conclusion: Resin infiltrated is superior to laser irradiation in improving the surface roughness of demineralized enamel, and obviously better than micro-grinding in improving the microhardness and anti-demineralization stability.

Key words: demineralization of enamel, resin infiltration, micro-grinding, laser