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Assessment of Orthodontic Treatment Need in Mixed Dentition Period (11- 12 Years) Among School Children in Marathahalli, Bangalore

Tulika Wakhloo

Background: The demand for orthodontic treatment is increasing because of the high perception rates of malocclusions and greater attention to aesthetics. This stresses the need of epidemiological studies using malocclusion indices for objectively prioritizing orthodontic treatment need. Aim: This study was undertaken to evaluate the orthodontic treatment need in mixed dentition (11-12 years) among school children of Marathahalli, located in Bangalore, India. Material and methods: A representative sample of 447 school children aged 11-12 years was evaluated. The examination was carried out by a single trained calibrated examiner. The orthodontic treatment need was assessed using DHC of the IOTN and modified AC. Angles molar relationship for permanent molars was also assessed. The study followed WHO recommendations. Results: The prevalence of children showing definitive orthodontic treatment need in the studied population according to DHC of IOTN and modified Aesthetic Component (AC) was 14.18% and 8.47% respectively with no gender predilection. Increased overjet was found to be the most prevalent occlusal trait (69.8%). Angle’s Class I Molar Relation was found in 63.63% of the studied population. Conclusion: The percentage of population with borderline treatment need according to modified aesthetic component was high (20.82%) indicating the increased sensitivity of the modified scale. The combined use of DHC of IOTN and modified AC can be effectively used for prioritizing orthodontic treatment needs in mixed dentition period for early institution of preventive and interceptive measures.