利用数字化技术分析固定多曲方丝弓矫正器治疗后牙带环槽的磨损。

Digital technique to analyze the wear of the slot after orthodontic treatment through fixed multibracket appliances.

机构信息

Department of Orthodontics, Faculty of Medicine and Dentistry, University of Salamanca, Paseo Universidad de Coimbra, 37008, Salamanca, Spain.

Department of Endodontics, Faculty of Health Sciences, Alfonso X El Sabio University, 28691, Madrid, Spain.

出版信息

BMC Oral Health. 2023 Mar 14;23(1):149. doi: 10.1186/s12903-023-02818-1.

DOI:10.1186/s12903-023-02818-1

PMID:36918885

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10012746/

Abstract

INTRODUCTION

To assess the accuracy, repeatability and reproducibility of a measurement digital technique to quantify the wear of the bracket slot walls of the fixed multibracket appliance after orthodontic treatment with the previous measurement traditional technique (scanning electronic microscope (SEM)).

METHODS

A total of 100 fixed multibracket appliances were cemented during the 15 months orthodontic treatment and subsequently removed. The fixed multibracket appliances were submitted preoperatively and postoperatively to a micro-computed tomography (micro-CT) scan to obtain accurate standard tessellation language (STL) digital files of the fixed multibracket appliances and to a preoperatively and postoperatively SEM analysis. Afterwards, pre-operatively and postoperatively STL digital files of each fixed multibracket appliances were aligned using morphometric software with the best fit algorithm. Subsequently, area and volume wear of fixed multibracket appliances was identified, isolated and measured.

RESULTS

The repeatability and reproducibility of the digital measurement method for the area (mm) and volume (mm) were analyzed by Gage R&R statistical analysis. The area wear of the bracket slot walls of the fixed multibracket appliance after orthodontic treatment showed a repeatability of 3.7% and a reproducibility of 0%. The volume of the bracket slot walls of the fixed multibracket appliance after orthodontic treatment showed a repeatability of 0.9% and a reproducibility of 5.6%. However, the traditional measurement technique showed a repeatability of 0.58% and a reproducibility of 33.01%; hence, it was repeatable but not reproducible.

CONCLUSIONS

The digital measurement technique is a reproducible, repeatable, and accurate method for quantifying the wear of the bracket slot walls of the fixed multibracket appliance after orthodontic treatment.

摘要

简介

评估一种测量数字技术的准确性、可重复性和再现性，以量化正畸治疗后固定多托矫治器托槽壁的磨损，该技术之前使用传统测量技术（扫描电子显微镜（SEM））。

方法

在 15 个月的正畸治疗期间，共粘结了 100 个固定多托矫治器，随后将其拆除。在手术前和手术后，将固定多托矫治器进行微计算机断层扫描（micro-CT）扫描，以获得固定多托矫治器的准确标准 tessellation 语言（STL）数字文件，并进行手术前和手术后的 SEM 分析。随后，使用形态计量学软件和最佳拟合算法对每个固定多托矫治器的术前和术后 STL 数字文件进行对齐。随后，确定、隔离和测量固定多托矫治器的面积和体积磨损。

结果

通过 Gage R&R 统计分析，对数字测量方法的面积（mm）和体积（mm）的重复性和再现性进行了分析。正畸治疗后固定多托矫治器托槽壁的面积磨损显示重复性为 3.7%，再现性为 0%。正畸治疗后固定多托矫治器托槽壁的体积磨损显示重复性为 0.9%，再现性为 5.6%。然而，传统测量技术显示重复性为 0.58%，再现性为 33.01%；因此，它是可重复的，但不可再现的。