Enhancement of orthodontic tooth movement and root resorption in ovariectomized mice

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.

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Root Resorption in Orthodontic Treatment: Scoping Review

Orthodontic Journal of Nepal ◽

10.3126/ojn.v7i2.20166 ◽

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

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Effects of calcitonin on orthodontic tooth movement and associated root resorption in rats

Acta Odontologica Scandinavica ◽

10.1080/00016357.2017.1365375 ◽

2017 ◽

Vol 75 (8) ◽

pp. 595-602

Author(s):

Ling Guan ◽

Suai Lin ◽

Weijun Yan ◽

Lei Chen ◽

Xiaofeng Wang

Keyword(s):

Tooth Movement ◽

Root Resorption ◽

Orthodontic Tooth Movement

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Effect of Alveolar Ridge Preservation with PDFDBA on Orthodontic Tooth Movement Rate, Formation of Gingival Invagination and Root Resorption: A Randomized, Controlled Pilot Study

Biomedical & Pharmacology Journal ◽

10.13005/bpj/1072 ◽

2016 ◽

Vol 9 (3) ◽

pp. 1229-1235

Author(s):

ALI SHARIF MOQADAM ◽

VALIOLLAH ARASH ◽

MAYSAM MIRZAIE ◽

MAJID FEREYDOONI ◽

HAMID HAGHANI ◽

...

Keyword(s):

Tooth Movement ◽

Root Resorption ◽

Orthodontic Tooth Movement ◽

Ridge Preservation ◽

Alveolar Ridge ◽

Movement Rate ◽

Randomized Controlled ◽

Alveolar Ridge Preservation ◽

Gingival Invagination ◽

Tooth Movement Rate

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An Analysis of the Stress Induced in the Periodontal Ligament during Extrusion and Rotation Movements: A Finite Element Method Linear Study Part I

The Journal of Contemporary Dental Practice ◽

10.5005/jp-journals-10024-1750 ◽

2015 ◽

Vol 16 (9) ◽

pp. 740-743 ◽

Cited By ~ 1

Author(s):

HP Raghuveer ◽

M Hemanth ◽

MS Rani ◽

Chathura Hegde ◽

B Vedavathi ◽

...

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Compressive Stress ◽

Periodontal Ligament ◽

Tooth Movement ◽

Root Resorption ◽

Orthodontic Tooth Movement ◽

3D Fem ◽

Force System ◽

Element Method

ABSTRACT Background Orthodontic tooth movement occurs due to various biomechanical changes in the periodontium. Forces within the optimal range yield maximum tooth movement with minimum deleterious effects. Among various types of tooth movements, extrusion and rotational movements are seen to be associated with the least amount of root resorption and have not been studied in detail. Therefore in this study, the stress patterns in the periodontal ligament (PDL) were evaluated with extrusion and rotational movements using the finite element method FEM. Materials and methods A three-dimensional (3D) FEM model of the maxillary incisors was generated using SOLIDWORKS modeling software. Stresses in the PDL were evaluated with extrusive and rotational movements by a 3D FEM using ANSYS software with linear material properties. Results It was observed that with the application of extrusive load, the tensile stresses were seen at the apex, whereas the compressive stress was distributed at the cervical margin. With the application of rotational movements, maximum compressive stress was distributed at the apex and cervical third, whereas the tensile stress was distributed on cervical third of the PDL on the lingual surface. Conclusion For extrusive movements, stress values over the periodontal ligament was within the range of optimal stress value as proposed by Lee, with a given force system by Profitt as optimum forces for orthodontic tooth movement using linear properties. During rotation there are stresses concentrated at the apex, hence due to the concentration of the compressive forces at the apex a clinician must avoid placing heavy stresses during tooth movement. How to cite this article Hemanth M, Raghuveer HP, Rani MS, Hegde C, Kabbur KJ, Vedavathi B, Chaithra D. An Analysis of the Stress Induced in the Periodontal Ligament during Extrusion and Rotation Movements: A Finite Element Method Linear Study Part I. J Contemp Dent Pract 2015;16(9):740-743.

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