Comparison Of Dental Age Of Hubli Dharwad Children By Moore's Method With The Skeletal Age And Chronological Age

摘要

The developmental status of a child is usually assessed in relation to physical events that take place during the progress of growth. Although growth events occur in reasonably constant sequences, the ages at which they are reached vary considerably among children. The various biological ages commonly used are dental age, chronological age, skeletal age, secondary sexual characteristics and morphological age but one expression cannot denote the complexity of growth and development. This study is an attempt to compare the dental age with the chronological age and the skeletal age. Introduction The growth of children has long fascinated poets, parents and pediatricians but the diversity in the expressions has left us unsatisfied. The developmental status of a child is usually assessed in relation to physical events that take place during the progress of growth. Although growth events occur in reasonably constant sequences, the ages at which they are reached vary considerably among children.Age determination plays an important role in pediatric medicine, endocrinology, pediatric dentistry and orthodontics Review of Literature Pryor (1907)1 conducted studies on the skeletal development of the hand and wrist by means of X-rays and was the first one to suggest the skeletal precocity of the females as compared to males. Todd (1937) 2 suggested a method of determining the skeletal age based on the appearance of the joint surfaces, the size relationships, and the shape of the bones in the metaphyseal-epiphyseal regions and other centers of ossification in the hand and wrist radiograph Nolla (1960)3 suggested a method for assessment of the age of immature dentitions from radiographs based on a serial study of fifty children. Points were awarded to each tooth on a scale ranging from one point when only the crypt is seen and the calcification has not commenced to ten points when the apex is just completed. The sum of the points of the whole dentition gave the age assessment. Moorees, Fanning and Hunt (1963)4 published charts based on a radiographic survey which gives details of the development of both the deciduous and the permanent dentition. The Moorees, Fanning and Hunt charts provide more information on the individual stages of development for each tooth and have the advantage of providing separate charts for each sex. Ranta N.M. (1988)5 aimed to check if the dental maturity charts made in southern Finland can be used without modifications in other parts of the country. Demirjians method was used to estimate dental maturity. They suggested differences in dental maturity within a fairly homogeneous population, which should be considered when national charts are used. Marks (1992)6 assessed and quantified the differences in two regionally distinct orthodontic series with regard to average tooth mineralization and tooth eruption ages. The scoring was done according to the stages defined by Moorees, Fanning and Hunt. The hand wrist films were scored according to the 11 grade system of Fishman. Statistical comparisons suggested difference in the average tempos of development between midsouth (Tennessee) and Midwest (Ohio) samples of adolescent white orthodontic patients, the midsouth series being comparatively delayed in all formative and eruptive phases tested. . Prabhakar A.R., Panda A.K., Raju O.S. (2002) 7 studied the maturity scores of the 78 males and 73 females and were converted to obtain dental age using the Demirjian's conversion chart. The chronologic age, skeletal age and the obtained dental age were compared using the student's test. .The obtained dental age was found to be overestimated in children of Davangere. An overestimation of 120±1.02 years and 0.90±0.87 years was found in males and females respectively, indicating that Demirjian's method did not give accurate age assessment in the children of Davanagere.. Though various studies have been conducted in Western population to assess the various biological ages individuall