利用低剂量 CBCT 进行牙齿分割以制定正畸治疗计划:探索性活体验证。

IF 1.3 4区 医学 Q3 DENTISTRY, ORAL SURGERY & MEDICINE
Maurice Ruetters, Holger Gehrig, Sinclair Awounvo, Ti-Sun Kim, Sara Doll, Korallia Alexandrou, Anna Felten, Christopher Lux, Sinan Sen
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引用次数: 0

摘要

目的:三维成像已成为正畸学中越来越重要的组成部分。然而,与之相关的是,患者会受到更高的辐射照射。新开发的锥束计算机断层扫描(CBCT)设备可以提供低剂量 CBCT(LD-CBCT)。我们假设 LD-CBCT 在分割牙根和牙冠以及测量牙齿长度方面与标准高剂量 CBCT(HD-CBCT)一样精确且具有可重复性。一名研究人员对 30 颗单根牙齿进行了两次分段。同时还测量了每颗牙齿的长度。计算了林氏一致性相关系数(CCC)以评估 HD-CBCT 和 LD-CBCT 测量的一致性,并计算了类内相关系数(ICC)以评估研究者内部的可靠性。分析结果由Bland-Altman图支持:结果:使用 HD-CBCT 获得的容积测量值明显高于使用 LD-CBCT 获得的容积测量值(p 结论:HD-CBCT 的容积测量值明显高于 LD-CBCT 的容积测量值:在这种实验环境的限制下,LD-CBCT 与 HD-CBCT 在测量牙齿长度方面同样有效。至于体积差异,还需要进行活体研究来确定其临床意义。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Tooth segmentation by low-dose CBCT for orthodontic treatment planning : Explorative ex vivo validation.

Purpose: Three-dimensional imaging has become an increasingly important component of orthodontics. Associated with this, however, is a higher radiation exposure for patients. New cone-beam computed tomography (CBCT) devices have been developed that can provide low-dose CBCT (LD-CBCT). We hypothesized that LD-CBCT is as precise and reproducible as standard high-dose CBCT (HD-CBCT) in segmenting roots and crowns as well as measuring tooth length.

Methods: HD-CBCT and LD-CBCT scans were taken of four human cadaveric heads. Thirty single-rooted teeth were segmented twice by one investigator. The length of each tooth was also measured. Lin's concordance correlation coefficient (CCC) was calculated to assess the agreement of HD-CBCT and LD-CBCT measurements and the intraclass correlation coefficient (ICC) was calculated to assess intrarater reliability. Analyses were supported by Bland-Altman plots.

Results: Volume measurements obtained using HD-CBCT were significantly higher than those obtained using LD-CBCT (p < 0.001). CCC was 0.975 (95% confidence interval [CI] = 0.956-0.986) indicating excellent agreement between the two modalities. Intrarater reliability between the two sets of LD-CBCT and HD-CBCT volume measurements was excellent (ICC = 0.998, 95%CI = 0.995-0.999 [HD-CBCT], ICC = 0.997, 95%CI = 0.992-0.998 [LD-CBCT]). CCC for tooth length measurements was 0.991 (95% CI = 0.983-0.995), indicating excellent agreement between HD-CBCT and LD-CBCT. Intrarater reliabilities between the two sets of tooth length measurements were also excellent for both methods (ICC = 0.998, 95%CI = 0.995-0.999 [HD-CBCT], ICC = 0.997, 95%CI = 0.992-0.998 [LD-CBCT]).

Conclusions: Within the limitations of this experimental setting, LD-CBCT is as valid as HD-CBCT for measuring tooth length. Regarding the volume differences, in vivo studies are required to determine their clinical relevance.

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来源期刊
CiteScore
3.90
自引率
0.00%
发文量
64
审稿时长
>12 weeks
期刊介绍: The Journal of Orofacial Orthopedics provides orthodontists and dentists who are also actively interested in orthodontics, whether in university clinics or private practice, with highly authoritative and up-to-date information based on experimental and clinical research. The journal is one of the leading publications for the promulgation of the results of original work both in the areas of scientific and clinical orthodontics and related areas. All articles undergo peer review before publication. The German Society of Orthodontics (DGKFO) also publishes in the journal important communications, statements and announcements.
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