Evaluation of the long-term structural change caused by root canal treatment in the bone around the tooth by fractal analysis.

IF 1.6 3区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Gulsun Akay, Umut Pamukcu, Ozge Karadag Atas
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引用次数: 0

Abstract

Objective: To evaluate the microarchitecture changes in the trabecular bone around (mesial and distal) the tooth after root canal treatment on panoramic radiographs by measuring the fractal dimension (FD) value change with fractal analysis (FA).

Methods: One hundred two patients (69 females, 33 males) with a mean age of 33.12 (18-69) years were included. These patients had a clinically healthy, radiologically successful root canal-treated mandibular premolar/molar tooth treated at least 1 year ago. A healthy, untreated contralateral tooth with the same tooth number had to be present (control tooth). Patients were divided into four groups according to their ages (18-24, 25-34, 35-44, and 45 +), teeth into three groups according to treatment time (1-3 years, 4-6 years, and 7-8 years), and three groups according to tooth number (35-45, 36-46, 37-47). FD measurements were made at two rectangular Region of Interest (ROI) with 20 × 60 pixels selected on the mesial and distal of the root with the Image J version 1.3 software program on panoramic radiographs. The comparison of the FD values of the treated and control teeth was performed via the Wilcoxon signed ranks test.

Results: The FD values of mesial and distal regions of root canal-treated molars were statistically significantly higher than the control teeth (p < 0.05). The treatment time, tooth number, and sex and age of the patients did not have a statistically significant effect on the increase in FD value (p > 0.05). There was a correlation between the mesial FD value changing and treatment year (r =  - 0.21, p = 0.035).

Conclusion: After the first year of root canal treatment, quantitatively measurable structural changes were observed in the trabecular bone in both the mesial and distal regions of the tooth in all age groups and sexes in the posterior teeth of the mandible.

用分形分析评价根管治疗引起的牙周骨长期结构变化。
目的:应用分形分析(FA)测量根管治疗后牙周围(中、远端)骨小梁的显微结构变化,评价其在全景x线片上的变化。方法:纳入102例患者,其中女性69例,男性33例,平均年龄33.12(18-69)岁。这些患者临床健康,放射学上成功的根管治疗下颌前磨牙/磨牙治疗至少1年前。必须有一个健康的、未经治疗且牙号相同的对侧牙齿(对照牙齿)。患者按年龄(18-24岁、25-34岁、35-44岁、45 +)分为4组,按治疗时间(1-3年、4-6年、7-8年)分为3组,按牙数(35-45岁、36-46岁、37-47岁)分为3组。在全景x线片上使用Image J version 1.3软件程序在根的中、远端选择20 × 60像素的两个矩形感兴趣区域(ROI)进行FD测量。治疗组与对照组的FD值比较采用Wilcoxon符号秩检验。结果:根管治疗后磨牙中、远端FD值明显高于对照组(p < 0.05)。中间FD值变化与治疗年份有相关性(r = - 0.21, p = 0.035)。结论:在根管治疗一年后,在所有年龄组和性别的下颌骨后牙中,均可定量测量到牙齿中、远端小梁骨的结构变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Oral Radiology
Oral Radiology DENTISTRY, ORAL SURGERY & MEDICINE-
CiteScore
4.20
自引率
13.60%
发文量
87
审稿时长
>12 weeks
期刊介绍: As the official English-language journal of the Japanese Society for Oral and Maxillofacial Radiology and the Asian Academy of Oral and Maxillofacial Radiology, Oral Radiology is intended to be a forum for international collaboration in head and neck diagnostic imaging and all related fields. Oral Radiology features cutting-edge research papers, review articles, case reports, and technical notes from both the clinical and experimental fields. As membership in the Society is not a prerequisite, contributions are welcome from researchers and clinicians worldwide.
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