Evaluation of External Apical Root Resorption and the Relevance of Intermediate Radiography in Non-Extraction Treatment With Fixed Appliances for Adolescents With Crowding: A Multicenter Randomised Controlled Trial Using CBCT

IF 2.4 3区医学 Q2 DENTISTRY, ORAL SURGERY & MEDICINE

Orthodontics & Craniofacial Research Pub Date : 2025-02-03 DOI:10.1111/ocr.12903

Kristina Johansson, Helena Christell, Anna Brechter, Liselotte Paulsson

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引用次数: 0

Abstract

Objectives

The objectives are to assess the severity and frequency of clinically relevant external apical root resorption (EARR) ≥ 2 mm during orthodontic treatment with Damon passive self-ligating and Victory conventional standardised fixed appliance systems and to evaluate the relevance of intermediate radiographic examinations for early detection and prevention of severe EARR.

Materials and Methods

Adolescents aged 12–17 years with crowded and displaced teeth planned for non-extraction treatment were recruited from three orthodontic clinics. Participants were randomly allocated in a 1:1 ratio to treatment with either Damon Q (n = 35) or Victory (n = 40) using stratified blocks, with allocation concealed. EARR was assessed for all roots from incisors to molars using multiplanar reconstruction in cone beam computed tomography (CBCT) images acquired from various CBCT machines before, during and after treatment.

Results

Sixty-two patients were included in the EARR analysis. The upper incisors were the most affected tooth group, with mean EARR values of 0.20 mm for Damon and 0.51 mm for Victory (NS, alpha 1%). The frequency of clinically relevant EARR in this tooth group was 5.0% for Damon and 7.2% for Victory (NS, alpha 5%). Only one case with clinically relevant EARR after treatment was identified in the intermediate radiographic examinations.

Conclusions

The overall severity and frequency of EARR were below clinically relevant levels in both treatment groups. The results strengthen the evidence that routine intermediate radiography appears to be of limited relevance for early detection and prevention of severe EARR in non-extraction treatments for adolescents with crowded teeth.

Trial Registration

ClinicalTrials.gov: NCT05664282

Abstract Image

查看原文本刊更多论文

评估外根尖吸收和中间x线摄影在固定矫治器非拔牙治疗青少年拥挤中的相关性：一项使用CBCT的多中心随机对照试验。

目的：目的是评估Damon被动自结扎和Victory常规标准化固定矫治系统正畸治疗中临床相关外根尖吸收(EARR)≥2mm的严重程度和频率，并评估中期影像学检查对早期发现和预防严重EARR的相关性。材料与方法：从3家正畸诊所招募年龄在12-17岁、牙齿拥挤移位、拟行非拔牙治疗的青少年。参与者以1:1的比例随机分配到使用分层块的Damon Q （n = 35）或Victory （n = 40）治疗，分配隐藏。在治疗前、治疗中和治疗后，采用锥形束计算机断层扫描（CBCT）多平面重建图像评估从门牙到磨牙的所有牙根的EARR。结果：62例患者纳入EARR分析。上切牙是受影响最严重的牙组，Damon的平均EARR值为0.20 mm， Victory的平均EARR值为0.51 mm （NS, alpha 1%）。该牙组临床相关EARR发生率Damon为5.0%，Victory为7.2% （NS, alpha 5%）。在中期影像学检查中仅发现1例治疗后出现临床相关的EARR。结论：两组患者EARR的总体严重程度和发生频率均低于临床相关水平。结果加强了常规中间x线摄影对于早期发现和预防严重EARR在非拔牙治疗中对牙齿拥挤的青少年的相关性有限。试验注册：ClinicalTrials.gov: NCT05664282。

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

Orthodontics & Craniofacial Research 医学-牙科与口腔外科

CiteScore

5.30

自引率

3.20%

发文量

审稿时长

>12 weeks

期刊介绍： Orthodontics & Craniofacial Research - Genes, Growth and Development is published to serve its readers as an international forum for the presentation and critical discussion of issues pertinent to the advancement of the specialty of orthodontics and the evidence-based knowledge of craniofacial growth and development. This forum is based on scientifically supported information, but also includes minority and conflicting opinions. The objective of the journal is to facilitate effective communication between the research community and practicing clinicians. Original papers of high scientific quality that report the findings of clinical trials, clinical epidemiology, and novel therapeutic or diagnostic approaches are appropriate submissions. Similarly, we welcome papers in genetics, developmental biology, syndromology, surgery, speech and hearing, and other biomedical disciplines related to clinical orthodontics and normal and abnormal craniofacial growth and development. In addition to original and basic research, the journal publishes concise reviews, case reports of substantial value, invited essays, letters, and announcements. The journal is published quarterly. The review of submitted papers will be coordinated by the editor and members of the editorial board. It is policy to review manuscripts within 3 to 4 weeks of receipt and to publish within 3 to 6 months of acceptance.