An Insight into Risk Factors for Root Resorption During Orthodontic Treatment

2016 ◽  
Vol 17 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Rohaya Megat Abdul Wahab ◽  
Noor Ayuni Ahmad Shafiai ◽  
Shahrul Hisham Zaina Ariffin
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Insight Into

Root resorption in orthodontic treatment with application of aligners. A retrospective study using cone-beam computed tomography

2019 ◽  
pp. 46-50
Author(s):  
N.D. Pilipenko ◽  
S.Yu. Maksyukov
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Cone Beam ◽  
Cortical Plate ◽  
Average Value ◽  
Absolute Reduction ◽  
Potential Risk Factors ◽  
Maxillary Incisors ◽  
The Difference

he aim of this work is to study the coverage and severity of the inflammatory resorption of the root of the maxillary incisors caused by orthodontic treatment with aligners using CBCT to determine possible risk factors. Measurement of the length of the root of the maxillary incisors was carried out on orthodontic images of CBCT in the pre- and post-therapeutic periods in 80 patients who received complex orthodontic treatment with aligners The average value of the absolute reduction of the root length varied between 0.47±.061 mm and 0.55±0.70 mm, and the difference between the central and lateral upper incisors was not significant. The defeat of the root reduction of more than 25%, amounted to 1.25% of cases. Potential risk factors included gender, malocclusion, crowding of teeth, and the approach of the tops of the roots of the teeth to the cortical plate in the post-therapeutic period. Complex treatment with aligners gives minimal root resorption. Sex, malocclusion, crowding of teeth, and the approach of the tops of the roots of the teeth to the cortical plate in the post-therapeutic period significantly affect the likelihood of changes in the length of the root.

scholarly journals Apical root displacement is a critical risk factor for apical root resorption after orthodontic treatment

2018 ◽  
Vol 88 (6) ◽  
pp. 740-747 ◽  
Author(s):  
Kyoung-Won Kim ◽  
Sung-Jin Kim ◽  
Ji-Yeon Lee ◽  
Yoon-Jeong Choi ◽  
Chooryung J. Chung ◽  
...  
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Critical Factor ◽  
Mixed Effects ◽  
Mixed Effects Model ◽  
Linear Mixed Effects ◽  
Apical Root Resorption ◽  
Lateral Cephalograms ◽  
Mandibular Incisors

ABSTRACT Objectives: To identify risk factors for apical root resorption (ARR) of maxillary and mandibular incisors using mathematical quantification of apical root displacement (ARD) and multiple linear mixed-effects modeling. Materials and Methods: Periapical radiographs of maxillary and mandibular incisors and lateral cephalograms of 135 adults were taken before and after orthodontic treatment. ARR was measured on the periapical radiographs, and movement of central incisors was evaluated on the superimposed pre- and posttreatment lateral cephalograms. ARD was mathematically calculated from pretreatment tooth length, inclination change, and movement of the incisal edge. Linear mixed-effects model analysis was performed to identify risk factors for ARR, and standardized coefficients (SCs) were calculated to investigate the relative contribution of the risk factors to ARR. Results: Vertical ARD showed the highest SCs for both maxillary and mandibular incisors. Horizontal ARD showed the second highest SC for mandibular incisors but was not significantly correlated with the ARR of maxillary incisors. When horizontal and vertical ARDs were included in the mixed-effects model, the use of self-ligating brackets was significantly correlated with increased ARR of mandibular incisors. Conclusions: ARD is a critical factor for ARR after orthodontic treatment. Careful monitoring of ARR is recommended for patients requiring significant ARD of incisors.

Effects of root–cortex relationship, root shape, and impaction side on treatment duration and root resorption of impacted canines

2021 ◽  
Author(s):  
Mehmet Amuk ◽  
Nisa Gul Amuk ◽  
Taner Ozturk
Keyword(s):  
Risk Factors ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Positive Root ◽  
Alpha Angle ◽  
Root Cortex ◽  
Impacted Canines ◽  
Computed Tomography Images ◽  
Categorical Groups

Summary Objectives This retrospective longitudinal study aimed to evaluate the factors that affect the orthodontic treatment duration (OTD) and external apical root resorption (EARR) of maxillary impacted canines (MIC) as root–cortex relationship, root shape, impaction side, and gender. Material and method Thirty-eight patients (mean age 15.28 ± 1.48 years) who had unilateral MIC and undergone orthodontic treatment were included in this study. Root–cortex relationship, root–cortex intersection amount, root shape, impaction side, height, alpha angle, impaction zone, and length of the MIC were evaluated on cone-beam computed tomography images at the beginning of the treatment. Final assessments were performed on ortopantograms at the end of the treatment as canine angulation and tooth length. The sample was characterized by descriptive statistics; t-tests, Mann–Whitney U-test, ANOVA, and Kruskal–Wallis tests were used for the comparison of EARR and OTD values between the categorical groups. Results Root shape affected OTD, and the longest value was detected in MIC with bent root (P < 0.000). The presence of root–cortex relationship also prolonged OTD for approximately 3 months (P = 0.006). MIC with risk factors like positive root–cortex relationship and bent roots had higher EARR values than those with negative root–cortex relationship and normal roots (P = 0.042, P = 0.021, respectively). EARR of the palatal MIC was also higher than the buccal MIC (P = 0.009). OTD was significantly influenced by root–cortex intersection amount (P = 0.004). Conclusion The presence of root–cortex relationship and abnormal root shape were risk factors for greater EARR of MIC along OTD, which was also significantly influenced by root shape and root–cortex relationship.

scholarly journals External Root Resorption (ERR) after orthodontic treatment: Review article

2021 ◽  
Vol 12 (3) ◽  
pp. 158-163
Author(s):  
Fernando Mauricio Villalta Mendoza ◽  
Viviana Carolina Cordero Morales ◽  
Christian Daniel Piedra Arpi ◽  
Jorge Antonio Reinoso Ortiz
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Genetic Alterations ◽  
Review Article ◽  
Negative Consequences ◽  
External Root Resorption ◽  
Treatment Review

External root resorption (ERR) after orthodontic treatment represents one of its associated negative consequences. For several years, the existence of risk factors that contribute to the establishment of this alteration has been described, where we find genetic alterations related to the orthodontic treatment performed.

scholarly journals Severe root resorption resulting from orthodontic treatment: Prevalence and risk factors

2015 ◽  
Vol 20 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Caroline Pelagio Raick Maués ◽  
Rizomar Ramos do Nascimento ◽  
Oswaldo de Vasconcellos Vilella
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Root Apex ◽  
Dental Arch ◽  
Chi Square ◽  
Prolonged Therapy ◽  
Treatment Prevalence ◽  
External Root Resorption ◽  
Treatment Onset

OBJECTIVE: To assess the prevalence of severe external root resorption and its potential risk factors resulting from orthodontic treatment. METHODS: A randomly selected sample was used. It comprised conventional periapical radiographs taken in the same radiology center for maxillary and mandibular incisors before and after active orthodontic treatment of 129 patients, males and females, treated by means of the Standard Edgewise technique. Two examiners measured and defined root resorption according to the index proposed by Levander et al. The degree of external apical root resorption was registered defining resorption in four degrees of severity. To assess intra and inter-rater reproducibility, kappa coefficient was used. Chi-square test was used to assess the relationship between the amount of root resorption and patient's sex, dental arch (maxillary or mandibular), treatment with or without extractions, treatment duration, root apex stage (open or closed), root shape, as well as overjet and overbite at treatment onset. RESULTS: Maxillary central incisors had the highest percentage of severe root resorption, followed by maxillary lateral incisors and mandibular lateral incisors. Out of 959 teeth, 28 (2.9%) presented severe root resorption. The following risk factors were observed: anterior maxillary teeth, overjet greater than or equal to 5 mm at treatment onset, treatment with extractions, prolonged therapy, and degree of apex formation at treatment onset. CONCLUSION: This study showed that care must be taken in orthodontic treatment involving extractions, great retraction of maxillary incisors, prolonged therapy, and/or completely formed apex at orthodontic treatment onset.

scholarly journals Multidimensional Scaling for Orthodontic Root Resorption

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Cristina Teodora Preoteasa ◽  
Ecaterina Ionescu ◽  
Elena Preoteasa ◽  
J. A. Tenreiro Machado ◽  
Mihaela Cristina Baleanu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Experimental Data ◽  
Multidimensional Scaling ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Visualization Method ◽  
Statistical Tools ◽  
Dentofacial Orthopedics

The paper investigates the risk factors for the severity of orthodontic root resorption. The multidimensional scaling (MDS) visualization method is used to investigate the experimental data from patients who received orthodontic treatment at the Department of Orthodontics and Dentofacial Orthopedics, Faculty of Dentistry, “Carol Davila” University of Medicine and Pharmacy, during a period of 4 years. The clusters emerging in the MDS plots reveal features and properties not easily captured by classical statistical tools. The results support the adoption of MDS for tackling the dentistry information and overcoming noise embedded into the data. The method introduced in this paper is rapid, efficient, and very useful for treating the risk factors for the severity of orthodontic root resorption.

scholarly journals Orthodontically Induced Root Resorption-An Updated Review

2020 ◽  
Vol 24 (1) ◽  
pp. 1-7
Author(s):  
Frantzeska Karkazi ◽  
Juraj Lysy ◽  
Elias Bitsanis ◽  
Apostolis Tsolakis
Keyword(s):  
Risk Factors ◽  
Orthodontic Treatment ◽  
Literature Search ◽  
Genetic Factors ◽  
Root Resorption ◽  
Diagnostic Methods ◽  
Molecular Signaling ◽  
Careful Planning ◽  
Related Factors ◽  
Root Repair

SummaryBackground/Aim: Root resorption is one of the most common consequences of orthodontic treatment. However, its mechanism, etiology factors, diagnostic methods and the possibility of root repair remain controversial topics. The aim of this paper is to provide an updated review of the current literature concerning the orthodontically induced root resorption.Material and Methods: A literature search was performed using Google Scholar, PubMed and Scopus search engines covering the period January 1930 until June 2019 corresponding to articles investigating the mechanism, etiology, methods of interpretation of root resorption and the stages of root repair.Results: The mechanism of orthodontically induced root resorption involves an interaction between several molecular signaling pathways, which result in the resorption of both cementum and dentin by odontoclasts/cementoclasts. Root resorption can be the result of both treatment and patient-related factors. The main risk factors include prolonged orthodontic treatments, heavy forces, specific tooth movements, method of force application, systemic/genetic factors and aberrant root morphology. Nevertheless, root resorption is repaired to some extend by cellular cementum.Conclusions: Orthodontically root resorption is an unavoidable complication mainly due to its multifactorial etiology. However, its severity can be minimized with careful planning and radiographic monitoring.

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