[A factors study of root resorption after orthodontic treatment].

Zhonghua Kou Qiang Yi Xue Za Zhi

Department of Orthodontics, Peking University School of Stomatology, Beijing 100081, China.

Published: November 2003

Objective: To investigate the factors relating to root resorption after orthodontic treatment.

Methods: 96 cases treated with fixed appliances were selected. The panoramic radiographs before and after treatment were examined. The relationship between root resorption after treatment (RRAT) and the variables including sex, age, extraction or nonextraction approach, tooth location, treatment duration and the root resorption before treatment (RRBT) were analyzed by multiple variance analysis and stepwise multivariate linear regression analyses.

Results: (1) There were statistically significant differences in root resorption in relation to gender (estimate of RRAT for female: 0.41, that for male: 0.34), extraction (estimate of RRAT for the extraction group: 0.43, that for non-extraction: 0.31), anterior or posterior teeth (estimate of RRAT for the anterior teeth: 0.59, that for the posterior teeth: 0.12). (2) The estimate of RRAT for the upper teeth was 0.40, and that for the lower teeth was 0.37. There were no statistically significant differences. (3) Using multiple regression analysis, age, duration and RRBT were associated with RRAT (R = 0.59, R(2) = 0.35).

Conclusions: (1) Factors including gender, extraction or not and anterior or posterior teeth have influences on the RRAT. More root resorption was found in female or extraction cases. Anterior teeth were more susceptible to root resorption relative to posterior teeth. (2) Age, treatment duration and RRBT can explain approximately 35% of the RRAT. Root resorption aggregated when it was present before treatment. The age and treatment duration were lightly related to the root resorption.

Download full-text PDF

Source

Publication Analysis

Top Keywords

root resorption
36
estimate rrat
16
posterior teeth
16
treatment duration
12
root
9
resorption
9
resorption orthodontic
8
resorption treatment
8
rrat
8
statistically differences
8

Similar Publications

Evaluation of Long-Term Clinical and Radiographic Prognosis of Avulsed Teeth: A Retrospective Study.

Dent Traumatol

January 2025

Department of Pediatric Dentistry, Faculty of Dentistry, Ataturk University, Erzurum, Turkey.

Background/aim: Avulsion injuries have an uncertain prognosis. This study aims to evaluate periodontal ligament healing patterns and factors affecting the survival of replanted avulsed teeth.

Materials And Methods: In this retrospective study, data from 204 avulsed teeth in 143 children (mean age: 9.

View Article and Find Full Text PDF

Methylphenidate-effects on orthodontic tooth movement, orthodontically induced and nonorthodontic root resorption? : A micro-computed tomography and immunohistochemical analysis.

J Orofac Orthop

January 2025

Department of Molecular Medicine, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Topkapı, Gureba Hastanesi Cd, No. 69, 34093, Istanbul, Turkey.

Purpose: The aim of this study was to examine the effect of methylphenidate, prescribed for individuals with attention deficit hyperactivity disorder (ADHD), on orthodontic tooth movement (OTM) and root resorption.

Methods: In all, 30 rats were divided into (1) control (C), (2) constant (MCD), and (3) increasing dose of methylphenidate (MID) groups and 2 subgroups for each of them (nonorthodontic (30 days)/orthodontic (44 days)). After receiving saline or methylphenidate for 30 days, rats in the nonorthodontic groups were euthanized (n = 5/group).

View Article and Find Full Text PDF

Objective: This retrospective study aimed to assess the presence and amount of external apical root resorption (EARR) in endodontically treated teeth (ETT) and contralateral teeth with vital pulp (VPT) following orthodontic treatment.

Methods: The study sample included panoramic radiographs of 503 patients (314 females and 189 males; 16.29 years±3.

View Article and Find Full Text PDF

Background: This systematic review and meta-analysis aimed to assess the efficacy of autologous platelet concentrate (APCs) in comparison with coronally-advanced flap alone or in combination with connective tissue graft or other biomaterials or bioactive agents for root coverage (RC) of Miller's Class I and II gingival recession defects by measuring the keratinized mucosa width (KMW).

Materials And Methods: This systematic review and meta-analysis was conducted in accordance with the preferred reporting items for systematic reviews and meta-analysis guidelines. An electronic search of the literature was conducted in PubMed, EMBASE, Scopus, Cochrane, Web of Science, Magiran, Scientific Information Database, and Irandoc for randomized clinical trials (RCTs) that used APCs for RC in their intervention group.

View Article and Find Full Text PDF

Pre-extraction alveolar buccal bone overbuilding: a preclinical investigation.

Oral Maxillofac Surg

December 2024

Department of Oral Implantology, Osaka Dental University, 8-1 Kuzuhahanazonocho, Hirakata, 573-1121, Osaka, Japan.

Background: The pre-extraction overbuilding procedure was designed aiming to mitigate buccal bone resorption following tooth extraction. The objective of this study was to compare the efficacy of pre-extraction and juxta-extraction buccal overbuilding treatments in preserving buccal bone volume following tooth extraction.

Material And Methods: At the test sites (pre-extraction sites), an alveolar crest overbuilding was performed on the buccal aspect of the distal root of the fourth premolar using a xenograft covered with a collagen membrane.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!