Authors : Dr. C. Roopa kunthavai, † Dr. Balashanmugam Baskaranarayanan, †† Dr. Usha rao golla †
Volume : 4
Issue : 11
Year : 2015
Page No : 13-19
Abstract: Recently, CBCT has been used in root resorption detection associated with impacted canines. This retrospective study was aimed to use the assessment of degree of treatment difficulty of impacted maxillary canine using modified KPG index,its reliability compared with 2D analyses and relating the severity of Lateral incisor root resorption [LIRR]with this score. Materials & Methods: The sample consisted of 28 CBCT images of 13-28 years aged patients with maxillary canine impactions from the TamilNadu Government Dental College and Hospital, Chennai. Among them, 14 had bilateral and unilateral maxillary canine impactions and one had missing lateral incisors. The degree of treatment difficulty was assessed using modified KPG index and its reliability was statistically proved significant (p value < 0.05). Result: The reliability of this KPG index with 2D measures was also found statistically significant. The KPG index with Steward Analysis had 89% of sensitivity, whereas KPG index with Ericson and Kurol analysis and Steward Analysis with Ericson and Kurol had 100% sensitivity. In this study the association between KPG and Ericson and Kurol’s analysis was stronger. Conclusion: The severity LIRR and KPG index score was analyzed by one way ANOVA analysis. This showed statistically significant result that the mean KPG increases LIRR increased in their severity grade. This helps in prediction of the lateral incisor root resorption from the difficulty score of KPG index.