رابطه سن تقويمي، سن دنداني و سن استخواني در كودكان 7 تا 13 ساله

Relationship between Chronological, Dental and Skeletal Ages Among 7 to 13 year Old Children

Statement of problem: Efforts to find correlation between ossification events in the hand and wrist, developmental conditions of the teeth , and chronological age can lead to assessment of developmental status of an individual as a simple and useful method. Purpose: The aim of this stud y was to investigate the relation ship between chronological, dental and ske letal ages among 7 to 13 year old children referring to Orthodontic Department, Shiraz Dental School. Materials and Method: This cross-sectional stud y was conducted on 40 female and 22 male subjects. Sixty two panoramic and hand wrist radiographs were obtained. Dental ages were assessed according to Dernirjian based on the lower left canines, first and second premolars and second and third molars . Greulich & Pyle standard atla s was used to determine the ske leta l age . The results were anal yzed using Pear son coefficient correlation. Results: A stati stically significant relationship ( p <0.0 I) was found between dental and chronological age s. The relation between dental and skeletal age s was significant too ( p <0.05) . At the same skeletal maturity stage. dental maturation patterns of the male subjects were ahead and the G stage of the canine for both sexes (60 %) coincided with the MP3cap stage. Conclusion: It is suggested that tooth calcification stages in panoramic radiographs might be a valuable indicator to assign timing of growth spurt.