口腔医学研究 ›› 2022, Vol. 38 ›› Issue (11): 1082-1086.DOI: 10.13701/j.cnki.kqyxyj.2022.11.016

• 龋病牙髓病学研究 • 上一篇    下一篇

光子引导光声流清除乳牙根管累积碎屑的micro-CT研究

孟斯, 黄文燕, 伍岳钧, 杨晶晶, 葛立宏, 曾素娟*   

  1. 广州医科大学附属口腔医院儿童口腔科,广东省口腔组织修复与重建工程技术研究中心,广州市口腔再生医学基础与应用研究重点实验室 广东 广州 510182
  • 收稿日期:2022-05-31 出版日期:2022-11-25 发布日期:2022-11-22
  • 通讯作者: *曾素娟,E-mail:Zengsujuan@foxmail.com
  • 作者简介:孟斯(1995~ ),女,湖南人,硕士,医师,研究方向:儿童口腔医学、激光。
  • 基金资助:
    广东省医学科学技术研究基金项目(编号:A2021034)广州市卫生健康科技项目(编号:202214010064)

A Micro Computed Tomography Study on Removal of Accumulated Hard-tissue Debris in Root Canals of Primary Teeth by Photon Induced Photoacoustic Streaming

MENG Si, HUANG Wenyan, WU Yuejun, YANG Jingjing, GE Lihong, ZENG Sujuan*   

  1. Department of Pedodontics, Affiliated Stomatology Hospital of Guangzhou Medical University, Guangdong Engineering Research Center of Oral Restoration and Reconstruction, Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou 510182, China
  • Received:2022-05-31 Online:2022-11-25 Published:2022-11-22

摘要: 目的: 采用micro-CT分析光子引导光声流(PIPS)技术对乳前牙根管内累积硬组织碎屑(AHTD)的清除效果。方法: 将30颗人乳切牙分成6组(n=5):t1(1% NaOCl)、t2(1% NaOCl+17% EDTA)、t3(UAI)、t4(0.15 W-PIPS)、t5(0.3 W-PIPS)、t6(0.6 W-PIPS),计算根管预备前、后体积和冲洗前、后碎屑体积、AHTD减少百分比。结果: 冲洗后,各组间碎屑体积均有差异(P<0.05),在根管上段、下段和整个根管中,t5组AHTD减少率均为最高,t1组和t2组的AHTD减少率最低。在组内分析中,t1组、t5组、和t6组根管上段的AHTD减少率高于根管下段(P<0.05)。结论: 不同的根管冲洗技术均显著提高了乳牙根管的清洁度,其中,0.3 W功率下PIPS冲洗技术对乳牙根管上段及下段碎屑的清除效果最佳。

关键词: 硬组织碎屑, 光子引导光声流, 超声波, 乳牙

Abstract: Objective: To investigate the cleaning effects of photon induced photoacoustic streaming (PIPS) irrigation in the removal of accumulated hard tissue debris (AHTD) in the root canal of primary teeth by using micro-CT analysis. Methods: Thirty deciduous incisors were divided into six groups with five teeth in each group: t1 (1% NaOCl); t2 (1% NaOCl +17% EDTA); t3 (UAI); t4 (0.15 W-PIPS); t5 (0.3 W-PIPS); and t6 (0.6 W-PIPS). After micro-CT scans, root canal volume, debris volume, and percentage reduction of AHTD in the canals were calculated. Results: The volume of all the root canals altered slightly after preparation. Significant differences between the debris volume of total root canals pre and post irrigation in each group (P<0.05) were obtained. The t5 group had the largest percent reduction of AHTD, with the lowest being t1 and t2 groups in the cervical, apical, and total root canal. In intra-group analysis, t1, t5, and t6 groups displayed significant differences, with the cervical region presenting a greater volume of debris than the apical portion (P<0.05). Conclusion: Primary teeth root canal cleanliness was significantly improved with different activation techniques. The greatest debris reduction of cervical and apical regions of primary teeth was obtained with the PIPS protocol under 0.3-W power.

Key words: hard-tissue debris, irrigation-induced photoacoustic streaming, ultrasonic, primary teeth