Evaluation of root resorption in relation to two orthodontic treatment regimes. A clinical experimental study

1994 ◽  
Vol 16 (3) ◽  
pp. 223-228 ◽  
Author(s):  
E. Levander ◽  
O. Malmgren ◽  
S. Eliasson
Keyword(s):  
Experimental Study ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Treatment Regimes

scholarly journals Is Inflammation a Friend or Foe for Orthodontic Treatment?: Inflammation in Orthodontically Induced Inflammatory Root Resorption and Accelerating Tooth Movement

2021 ◽  
Vol 22 (5) ◽  
pp. 2388
Author(s):  
Masaru Yamaguchi ◽  
Shinichi Fukasawa
Keyword(s):  
Inflammatory Mediators ◽  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Root Resorption ◽  
Orthodontic Tooth Movement ◽  
Tnf Α ◽  
Orthodontic Forces ◽  
Necrosis Factor

The aim of this paper is to provide a review on the role of inflammation in orthodontically induced inflammatory root resorption (OIIRR) and accelerating orthodontic tooth movement (AOTM) in orthodontic treatment. Orthodontic tooth movement (OTM) is stimulated by remodeling of the periodontal ligament (PDL) and alveolar bone. These remodeling activities and tooth displacement are involved in the occurrence of an inflammatory process in the periodontium, in response to orthodontic forces. Inflammatory mediators such as prostaglandins (PGs), interleukins (Ils; IL-1, -6, -17), the tumor necrosis factor (TNF)-α superfamily, and receptor activator of nuclear factor (RANK)/RANK ligand (RANKL)/osteoprotegerin (OPG) are increased in the PDL during OTM. OIIRR is one of the accidental symptoms, and inflammatory mediators have been detected in resorbed roots, PDL, and alveolar bone exposed to heavy orthodontic force. Therefore, these inflammatory mediators are involved with the occurrence of OIIRR during orthodontic tooth movement. On the contrary, regional accelerating phenomenon (RAP) occurs after fractures and surgery such as osteotomies or bone grafting, and bone healing is accelerated by increasing osteoclasts and osteoblasts. Recently, tooth movement after surgical procedures such as corticotomy, corticision, piezocision, and micro-osteoperforation might be accelerated by RAP, which increases the bone metabolism. Therefore, inflammation may be involved in accelerated OTM (AOTM). The knowledge of inflammation during orthodontic treatment could be used in preventing OIIRR and AOTM.

scholarly journals Root Resorption in Orthodontic Treatment: Scoping Review

2018 ◽  
Vol 7 (2) ◽  
pp. 47-51
Author(s):  
Neeta Aryal ◽  
Mao Jing
Keyword(s):  
Scoping Review ◽  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Root Resorption ◽  
Orthodontic Tooth Movement ◽  
Conventional Radiography ◽  
Promising Tool ◽  
External Root Resorption ◽  
Long Time ◽  
Orthodontic Patients

Introduction: Root resorption is the loss of apical root tissue leading to the shortness of root which is often evident in orthodontic tooth movement. Proper management during orthodontic treatment however can minimize this undesirable outcome. The present article attempts to review the etiology of root resorption, methods of diagnosis, and strategies for prevention.Materials & Method: A scoping review was done with the purpose to carry out the narrative integration of the relevant evidences on root resorption and orthodontic treatment from the published literatures. The resulting papers were studied and reviewed thoroughly for the key explanation of root resorption in orthodontic patients. A total of 41 published research articles were reviewed.Discussion: According to the literatures root resorption is common iatrogenic outcome in orthodontic treatment. Biological, mechanical, and combined biological and mechanical factors result in external root resorption. Though most clinicians diagnose root resorption by conventional radiography, researches have clearly shown that CBCT is the promising tool. The clinicians need to counsel orthodontic patients and their parents that the root resorption might be a potential consequence of the treatment lasting for long time. In case of severity; it is essential to reassess the patient and minimize the underlying cause. It is necessary to understand the role of orthodontist in preventing root resorption

scholarly journals Predisposing factors to severe external root resorption associated to orthodontic treatment

2013 ◽  
Vol 18 (1) ◽  
pp. 110-120 ◽  
Author(s):  
Gracemia Vasconcelos Picanço ◽  
Karina Maria Salvatore de Freitas ◽  
Rodrigo Hermont Cançado ◽  
Fabricio Pinelli Valarelli ◽  
Paulo Roberto Barroso Picanço ◽  
...  
Keyword(s):  
Root Length ◽  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Root Resorption ◽  
Treatment Time ◽  
Predisposing Factors ◽  
Crown Root ◽  
External Root Resorption ◽  
Lateral Cephalograms ◽  
Maxillary Incisors

OBJECTIVE: The aim of this study was to evaluate predisposing factors among patients who developed moderate or severe external root resorption (Malmgren's grades 3 and 4), on the maxillary incisors, during fixed orthodontic treatment in the permanent dentition. METHODS: Ninety-nine patients who underwent orthodontic treatment with fixed edgewise appliances were selected. Patients were divided into two groups: G1 - 50 patients with no root resorption or presenting only apical irregularities (Malmgren's grades 0 and 1) at the end of the treatment, with mean initial age of 16.79 years and mean treatment time of 3.21 years; G2 - 49 patients presenting moderate or severe root resorption (Malmgren's grades 3 and 4) at the end of treatment on the maxillary incisors, with mean initial age of 19.92 years and mean treatment time of 3.98 years. Periapical radiographs and lateral cephalograms were evaluated. Factors that could influence the occurrence of severe root resorption were also recorded. Statistical analysis included chi-square tests, Fisher's exact test and independent t tests. RESULTS: The results demonstrated significant difference between the groups for the variables: Extractions, initial degree of root resorption, root length and crown/root ratio at the beginning, and cortical thickness of the alveolar bone. CONCLUSION: It can be concluded that: Presence of root resorption before the beginning of treatment, extractions, reduced root length, decreased crown/root ratio and thin alveolar bone represent risk factors for severe root resorption in maxillary incisors during orthodontic treatment.

Orthodontically induced root resorption – a literature review

2019 ◽  
Vol 24 (2) ◽  
Author(s):  
Anna Pogorzelska ◽  
Anna Stróżyńska-Sitkiewicz ◽  
Kazimierz Szopiński
Keyword(s):  
Orthodontic Treatment ◽  
Root Resorption ◽  
Dental Treatment ◽  
Diagnostic Methods ◽  
Cone Beam ◽  
Permanent Teeth ◽  
Therapeutic Measures ◽  
Cervical Area ◽  
Periapical Radiography

Root resorption in moved teeth is a common undesirable side effect of orthodontic treatment. This pathology usually affects permanent teeth. Although any part of the root may be involved, the apical or cervical area is usually affected. The formation and development of these changes are a long-term process and depend on various factors. The etiology of resorptive changes associated with orthodontic treatment has been widely discussed by many authors, who proposed numerous classifications. Particularly noteworthy are the works on techniques for the treatment of malocclusion and their potential adverse effects. Modern diagnostic methods allow for an early detection of this pathology and the implementation of appropriate therapeutic measures. These techniques include periapical radiography (paralleling technique) combined with cone-beam computed tomography. Dentists not only notice the need to achieve a beautiful smile, but they also take into account possible root shortening. This process is not fully understood, but realizing its existence is important for planning and implementing both orthodontic and general dental treatment.

Apical root resorption after orthodontic treatment in patients with unilateral cleft lip and palate

2019 ◽  
Vol 24 (5) ◽  
pp. 1807-1819
Author(s):  
Theodosia N. Bartzela ◽  
Maria R. Mang de la Rosa ◽  
Kristina Wolf ◽  
Anke Schmidt ◽  
Charlotte Opitz
Keyword(s):  
Orthodontic Treatment ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Root Resorption ◽  
Apical Root Resorption

scholarly journals Apical root resorption during orthodontic treatment with aligners? A retrospective radiometric study

2013 ◽  
Vol 9 (1) ◽  
Author(s):  
Elena Krieger ◽  
Thomas Drechsler ◽  
Irene Schmidtmann ◽  
Collin Jacobs ◽  
Simeon Haag ◽  
...  
Keyword(s):  
Root Length ◽  
Orthodontic Treatment ◽  
Influence Factor ◽  
Root Resorption ◽  
Post Treatment ◽  
Anterior Crowding ◽  
Anterior Teeth ◽  
Lateral Cephalograms ◽  
Length Changes ◽  
Pre Treatment

Abstract Introduction Objective of this study was to investigate the incidence and severity of apical root resorptions (ARR) during orthodontic treatment with aligners. Materials and methods The sample comprised 100 patients (17–75 years of age) with a class I occlusion and anterior crowding before treatment, treated exclusively with aligners (Invisalign®, Align Technologies, Santa Clara, CA, USA). The following teeth were assessed: upper and lower anterior teeth and first molars. Root and crown lengths of a total of 1600 teeth were measured twice in pre- and post-treatment panoramic radiographs. Afterwards, relative changes of the root length during treatment were calculated by a root-crown-ratio taking pre- and post-treatment root and crown lengths into consideration. A reduction of this ratio was considered as a shortening of the initial root length. Additionally, tooth movements of the front teeth were assessed by lateral cephalograms and the 3-dimensonal set up of each patient. Results All patients had a reduction of the pre-treatment root length with a minimum of two teeth. On average 7.36 teeth per patient were affected. 54% of 1600 measured teeth showed no measurable root reduction. A reduction of >0%-10% of the pre-treatment root length was found in 27.75%, a distinct reduction of >10%-20% in 11.94%. 6.31% of all teeth were affected with a considerable reduction of >20%. We found no statistically significant correlation between relative root length changes and the individual tooth, gender, age or sagittal and vertical orthodontic tooth movement; except for extrusion of upper front teeth, which was considered as not clinical relevant due to the small amount of mean 4% ARR. Conclusions The present study is the first analyzing ARR in patients with a fully implemented orthodontic treatment with aligners (i.e. resolving anterior crowding). The variety was high and no clinical relevant influence factor could be detected. A minimum of two teeth with a root length reduction was found in every patient. On average, 7.36 teeth per patient were affected.

scholarly journals Comparison of Rate of Canine Retraction and Secondary Outcomes Associated With Conventional Fixed Orthodontic Treatment and Minimally Invasive Techniques (MOPs): A Randomized Control Trial

2020 ◽  
pp. 030157422096350
Author(s):  
Ajit Vikram Parihar ◽  
Shivam Verma ◽  
TP Chaturvedi ◽  
Naresh Kumar ◽  
A Kavin Prasanth ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Tooth Movement ◽  
Root Resorption ◽  
Control Group ◽  
P Value ◽  
Pain Level ◽  
Canine Retraction ◽  
Significant Difference ◽  
Secondary Outcomes ◽  
Anchorage Loss

Introduction: The objective of the study was to assess the rate of canine retraction and secondary outcomes associated with conventional fixed orthodontic treatment (CFO) and CFO with micro-osteoperforation (CFO + MOP), that is, anchorage loss, root resorption, vitality of tooth, pain and discomfort level during the procedure. Methods: A total of 16 patients with Class II Division 1 malocclusion who required upper first premolar extraction with lower non-extraction/single incisor extraction were divided into the test group (MOP) and positive control group (CFO + MOP) for a split-mouth study. Both maxillary canines were retracted with nickel–titanium (NiTi) closed coil springs. Patients were reviewed after 24 hours, 7 days, 28 days, and 4, 8, and 16 weeks to assess the rate of tooth movement, anchorage loss, root resorption, vitality of tooth, pain and discomfort level. Results: There was a statistically significant difference in the rate of tooth movement between the CFO and CFO + MOP groups after the first 4 weeks ( P-value = .026), whereas no statistically significant difference was observed at 8, 12, and 16 weeks ( P-value = .33, .99, and .08, respectively). In the CFO group, there was no statistically significant difference in tooth movement between different time intervals ( P-value > .05). There was no significant difference in root resorption between the groups. The pain level was higher in the MOP group in the first 24 hours ( P-value < .05) after the procedure. Later on, the difference in pain level between the groups was not significant ( P-value > .05). The vitality of retracted canines in both groups was healthy. Conclusion: The study recommends that the CFO + MOP procedure has substantial potential to be used as an adjunct to the routine mechanotherapy for faster tooth movement, as it may reduce the treatment time by half in the first 4 weeks after the MOP procedure. There are no potential differences in anchorage loss, tipping, vitality, and apical and lateral root resorption between the CFO and CFO + MOP groups. This trial was registered at Clinical Trial Registry, India.

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