IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-8-4-18945 Original Research Paper AN EVALUATION OF SKELETAL AGE USING LATERAL CEPHALOGRAM FOR CERVICAL VERTEBRAE AND INTRAORAL PERIAPICAL X–RAY FOR MP3 : A RADIOGRAPHIC STUDY Poorvasha Dhanare Dr. Dr. Shivanshu Bhardwaj Dr. April 2019 8 4 01 02 ABSTRACT

Objectives: To evaluate skeletal age using lateral cephalogram for cervical vertebrae and intraoral periapical X–ray for MP3 among Kanpur individuals and to correlate the age assessed by stages of ossification of Middle Phalanx of third finger (in IOPAR) with the age assessed by cervical vertebral maturation indicators.. Materials and Methods: A radiographic study consisted of a total 90 subjects 45 boys age from 10–13 years and 45 girls age from 9–12 years which was further divided into subgroups A1, B1, C1 and A2, B2, C2 respectively with 15 subjects in each subgroup. The study included digital radiographs of the MP3 of the right hand and conventional lateral cephalograms. Chronological age was assessed by the date of birth, MP3 maturation by Rajagopal and Kansal‘s criteria, and CVMI development by Lamparski method. Statistical Analysis: Spearman‘s rank–order correlation coefficient was applied to assess the correlation between stages of MP3 and CVMI. Results: Progressive stages of MP3 and CVMI were seen as chronological age advanced. The correlation between MP3 and Cervical Vertebral Maturation method was found to be highly significant for both males and females. Skeletal maturation occurs at an earlier chronological age in females than in males. Chronological age is not a reliable indicator for skeletal age. . MP3 and CVMI stages showed a strong positive correlation rs=0.8723 (p<0.0001)**. Conclusions: It is feasible to record MP3 stages with standard periapical X–ray film as it can be used as simple, practical and economical method for making decisions on treatment timing.