Correspondence between dental and skeletal maturity parameters among patients with different sagittal relationships at the end of puberty period

Abstract

Objective of the research was to evaluate level of correspondence between skeletal and dental maturity parameters and their relation to chronological age among orthodontic patients with different sagittal relationship at the end of puberty period. A sample of 61 patients’ datasets (clinical records, OPG, cephalogram) aged 15-17 years old was divided into 3 subgroups considering specifics of sagittal relationship (I, II and III Class). For each subgroup evaluation of dental age and staging of teeth development were provided with the use of Demirjian’s method. Evaluation of skeletal maturity was provided with the use of cervical vertebral maturation (CVM) method by the analysis of present cephalograms.85.24% persons were registered with H stage of second molars development, 80.32% persons with H stage of canines development, and 95.08% persons with H stage of second premolars development with no statistical differences of developmental stages distribution of above mentioned teeth between I, II and III Class (p >0.05). Correlation values between canine developmental stages and CS5 and CS6 were equal to the range of 0.52-0.64 and 0.60-0.69 respectively; between second premolar developmental stages and CS5 and CS6 – 0.61- 0.67 and 0.60-0.69 respectively; between second molar developmental stages and CS5 and CS6 – 0.51-0.53 and 0.50-0.58 respectively. Obtained results allow to resume that deviations of dental age among persons with different sagittal relationship prior to orthodontic treatment characterized with the analogical tendencies of distribution, thus providing us with primary evidences for theoretical hypothesis that dental maturation patterns used for dental age estimation are not influenced by the fact of different sagittal relationship itself. However, obtained results are not competent to conclude that essential causes of sagittal relationship changes have no effect on dental maturation processes.