September 2009

Volume 26, Issue 3

Prevalence of enamel defects related to pre-, peri- and postnatal factors in a Brazilian population.

Authors: A. C. Massoni A. M. Chaves A. Rosenblatt F. C. Sampaio A. F. Oliveira
doi: 10.1922/CDH_2268Massoni07


Objectives The aim of this paper is to evaluate the prevalence of enamel defects in infants from a socially and economically poor population and the possible association of these defects with disturbances occurring in the pre-, peri- and postnatal periods of human development. Participants 117 infants aged between 16 and 18 months old were included in four groups based on gestational age and whether part or full term pregnancy. Method The data were collected in two stages: hospital-based, where gestational and birth records were examined, and home-based, where dental examinations and nutrition were evaluated. The teeth were cleaned and dried with gauze and examined in the open air, avoding direct sunlight in the knee-to-knee position. The enamel defects were coded according to the modified Developmental Defects of Enamel Index. Besides this, body weight and height were considered as anthropometric measures for the evaluation of nutritional status by the National Center for Health Statistics standards. Main outcome measures The data were analyzed using the chi-square and Fisher Exact tests. Besides these tests, logistic regression models were used. Results The prevalence of enamel defects was 49.6%, higher in the group of male infants (p<0.001). The most frequent type of defect and the most affected surface were, respectively, diffuse opacity (9.5%) and the buccal surface (83.3%), located in the gingival half (6.7%). The logistic regression model showed that educational level, gestational age and intrauterine growth retardation (IUGR), besides a lack of breastfeeding, increased the probability of enamel defects up to level of 5%. Conclusions The association between enamel defects and the etiologic factors shown in this study suggest the existence of social influences regarding oral health and teeth development. Key words: Enamel defects; etiology, primary, incisors


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Editorial - The contributions of Edward H. Angle to dental public health 130-131 Download
The fractional urinary fluoride excretion of adults consuming naturally and artificially fluoridated water and the influence of water hardness: A randomized trial. 132-137 Download
The prevalence and severity of dental fluorosis in the high and low altitude parts of Central Plateau, Nigeria 138-142 Download
Prevalence of enamel defects related to pre-, peri- and postnatal factors in a Brazilian population. 143-149 Download
Development of a psychometric scale to assess satisfaction with dental care among Sri Lankans 150-156 Download
Consent of older children participating in BASCD coordinated dental epidemiology surveys in Wales. 157-161 Download
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Hopelessness, depression and oral health concerns reported by community dwelling older Australians 177-182 Download
Higher-order exploratory factor analysis of the Dental Subscale of Children’s Fear Survey Schedule in a Taiwanese population. 183-187 Download
Opportunities and challenges to promoting oral health in primary schools 188-192 Download


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