Association between Body Mass Index and Dental Development in 7-15 Year Old Children in the City of Isfahan-Iran in the Year 2008

JavadiNejad, Shahrzad and Karami, Maryam and Hashemnia, Najme (2010) Association between Body Mass Index and Dental Development in 7-15 Year Old Children in the City of Isfahan-Iran in the Year 2008. Journal of Mashhad Dental School, 34 (2). pp. 109-116.

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Introduction: Due to increasing body mass index (BMI) in children, it is necessary to study the effect of the obesity on dental development. If dental development accelerates in obese children, it can affect some orthodontic and pedodontic treatment plans. The purpose of this study was to determine the relationship between dental development and BMI, gender and sex in 7-15 year old children. Materials & Methods: In this descriptive cross-sectional study, 146 subjects including 89 females and 57 males (29 obese, 35 overweight and 82 normal weight) were studied. Dental age of subjects was determined using the Demirjian method. Weight and height of the subjects was measured and BMI status was determined for each subjects. Chronological age was calculated by subtracting the birth date from the date on which the radiographs were done for every individual. The BMI was used to distinguish the individuals who were overweight and obese. The difference between chronological and dental age was analyzed regarding BMI, age and gender. T-test and 3-way ANOVA were used to data analysis. To determine intraexaminer reliability, 10 panoramic radiographs were reassessed after 2 weeks and dental age was compared using crombach's alpha (0.99). Results: The mean difference between chronologic age and dental age was 0.78 years. Mean difference was 1.3 years for obese, 0.6 years for overweight and 0.67 years for normal weight subjects. Dental development was significantly accelerated in obese subjects (P=0.014). When evaluating the age groups, obese 7-10 year old children showed a statistically significant difference in dental development (P=0.018). There was no statistically significant difference between females and males. Conclusions: Children who were obese had accelerated dental development. In fact when incorporating orthodontic therapies such as growth modification and serial extractions, the timing of intervention may require recalculation to consider body mass index.

Item Type: Article
Subjects: WU Dentistry. Oral surgery
Divisions: Journals > Journal of Mashhad Dental School
Depositing User: jmds jmds
Date Deposited: 23 Sep 2017 15:04
Last Modified: 23 Sep 2017 15:04

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