Orthodontically induced external apical root resorption and its predisposing factors
Simona Rakauskaitė1, Aurius Žukovas2
Lithuanian University of Health Sciences, Faculty of Dentistry, 2014m
As an orthodontically induced root resorption is a frequent case, it is necessary to identify its types, what type of root resorption is induced orthodontically, what are the predisposing factors and ways of elimination of resorption. It is important to point out what are the key local and general predisposing factors.
Aim: 1. To analyze a mechanism of external apical root resorption. 2. To identify the key local and general predisposing factorsoforthodontically induced external apical root resorption
Methodology: academic articles, used herein, were found in “PubMed‘‘, “Oxford Journals“, “Science Direct“, “Jscholaronline“ biomedicine systems with publication time limit criteria 2009-2013. The articles were selected using the following key words: ”root resorption“, ”orthodontically induced external apical root resorption“, ,”root resorption in orthodontics“, “predisposing factors associated with orthodontically induced apical root resorption“, ”apical root resorption in root filled teeth“, ”biomechanics of external root resorption“, “mechanism of tooth movement“, “phases of tooth movement“. 28 articles met all criteria.
Results: mechanism of tooth movement during orthodontical treatment induces apical root resorption due to biological and biochemical processes in the tooth cement and periodontal tissues. The predisposing factorsoforthodontically induced external apical root resorption were divided into local and general. The latter are age, sex, systemic factors, etc. The local are mechanism of tooth movement, time period of a treatment procedure, amount and character of orthodontical forces, tooth root’s morphology and tooth vitality.
Conclusions: size of root resorption depends on a group of predisposing factors(local and general). As it’s impossible to eliminate all factors, the time period of a treatment procedure, the used forces and other predisposing factorsoforthodontically induced apical root resorption, could be controlled.