乳牙根管预备后的牙本质微裂纹：ProTaper Gold和Kedo-S旋转锉系统的评估
Dentinal Microcracks after Root Canal Preparation in Primary Root: An Evaluation of ProTaper Gold and Kedo-S Rotary File Systems.
作者信息
Patil Mamata B, Mandroli Praveenkumar S, Jalannavar Prashant, Patil Bharati B
机构信息
Department of Pediatric and Preventive Dentistry, P.M. Nadagouda Memorial Dental College & Hospital, Bagalkot, Karnataka, India.
Department of Pedodontics and Preventive Dentistry, Maratha Mandal's Nathajirao G. Halgekar Institute of Dental Sciences & Research Centre, Belgaum, Karnataka, India.
出版信息
Int J Clin Pediatr Dent. 2023 Sep-Oct;16(5):692-697. doi: 10.5005/jp-journals-10005-2677.
CONTEXT
There is a possibility of dentinal crack formation in primary teeth after root canal preparation using rotary files.
AIMS
To evaluate and compare the effect of ProTaper-Gold and Kedo-S rotary files on crack formation after root canal preparation in primary molars.
SETTINGS AND DESIGN
A total of 120 freshly extracted mandibular primary molars (6-9 years) were randomly divided into three groups of 40 each: ProTaper-Gold, Kedo-S, and Hand H-files, respectively.
MATERIALS AND METHODS
The roots were covered with a snuggly fitting surgical glove and stabilized in the teeth slot of a silicone mold of mandibular mixed dentition. Dental casts were obtained in a mixture of plaster of paris and sawdust. A screw system was incorporated in the cast for stabilization of the cast into the phantom head. All the root canals were instrumented in a standard operating position till 1 mm short of the radiographic apex. All roots were then stained and sectioned perpendicular to the long axis at the furcation level and 2 mm below the furcation to obtain one section per tooth. Sections were examined under a stereomicroscope at 25× magnification for any crack formations and recorded. Data were analyzed using Wilcoxon signed-rank and Kruskal-Wallis tests ( = 0.05).
RESULTS
The total number of cracks in terms of percentage following the use of ProTaper Gold, Kedo-S, and H-files were 35, 10, and 0%, respectively, on the upper surface and 15, 5, and 0% on the lower surface. Within the group, there was a statistically significant difference in ProTaper-Gold ( = 0.001).
CONCLUSION
The use of ProTaper-Gold resulted in a greater number of dentinal cracks compared to Kedo-S and H-files.
HOW TO CITE THIS ARTICLE
Patil MB, Mandroli PS, Jalannavar P, Dentinal Microcracks after Root Canal Preparation in Primary Root: An Evaluation of ProTaper Gold and Kedo-S Rotary File Systems. Int J Clin Pediatr Dent 2023;16(5):692-697.
背景
使用旋转锉进行乳牙根管预备后，存在牙本质裂纹形成的可能性。
目的
评估和比较ProTaper-Gold锉和Kedo-S旋转锉在乳牙磨牙根管预备后对裂纹形成的影响。
设置与设计
总共120颗新鲜拔除的下颌乳牙磨牙（6 - 9岁）被随机分为三组，每组40颗，分别为ProTaper-Gold组、Kedo-S组和手动H锉组。
材料与方法
用贴合紧密的手术手套覆盖牙根，并固定在下颌混合牙列的硅橡胶模具的牙槽中。用巴黎石膏和锯末的混合物制作牙模。在牙模中加入一个螺丝系统，以便将牙模稳定在模拟头中。所有根管均在标准操作位置进行预备，直至距离影像学根尖1毫米处。然后将所有牙根染色，并在分叉水平及分叉下方2毫米处垂直于长轴进行切片，每颗牙获得一个切片。在体视显微镜下以25倍放大倍数检查切片是否有裂纹形成并记录。使用Wilcoxon符号秩检验和Kruskal-Wallis检验分析数据（α = 0.05）。
结果
使用ProTaper Gold、Kedo-S和H锉后，上表面裂纹的百分比总数分别为35%、10%和0%，下表面分别为15%、5%和0%。在ProTaper-Gold组内，存在统计学显著差异（P = 0.001）。
结论
与Kedo-S锉和H锉相比，使用ProTaper-Gold导致更多的牙本质裂纹。
如何引用本文
帕蒂尔MB，曼德罗利PS，贾兰纳瓦尔P，《乳牙根管预备后的牙本质微裂纹：ProTaper Gold和Kedo-S旋转锉系统的评估》。《国际临床儿科牙科学杂志》2023；16(5)：692 - 697。
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