Root Resorption Associated with Rapid Molar Intruder (RMI)
Journal Title: IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) - Year 2017, Vol 16, Issue 3
Abstract
Introduction: Treatment of anterior open bite is based upon either intrusion of posterior teeth or extrusion of anterior teeth.Intrusion of posterior teeth might carry the risk of External root resorption (ERR). ERR is one of the worst and least predictable side effects of the orthodontic tooth movement. Currently, cone beam computed tomography (CBCT) is considered the most accurate tool to evaluate the extent of ERR without extraction of the teeth. Aim of the study: is to evaluate the effect of molar intrusion on the extent of external root resorption using CBCT. Material and methods:Fifteen growing patients suffering from anterior open bite were treated by molar intrusion using rapid molar intruder (RMI) attached to a trans-palatal and lingual arches. CBCT was taken before treatment and after 6 months of active treatment.The length of the roots were compared prior to and after intrusion and statistically analyzed usingdescriptive tests and samples t test to evaluate the extent of ERR. Results: the mean amount of root resorption was less than 1 mm and was considered clinically insignificant. Conclusion:The root resorption following molar intrusion using RMI in growing patients was not significant statistically and clinically.
Authors and Affiliations
Omar Y. Mostafa, Amr R. El- Beialy, Mohamed A. Bushnak
Keywords
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- EP ID EP595479
- DOI 10.9790/0853-1603049599
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