Enamel defects in decodious and permanent dentitions / Defeitos de esmalte nas dentições decidua e permanente

AUTOR(ES)
DATA DE PUBLICAÇÃO

2006

RESUMO

Changes in enamel during development are permanently recorded, and commonly present as demarcated opacity, diffuse opacity or enamel hypoplasia. Developmental enamel defects may provide clues regarding their etiology, resulting in clinical, epidemiological and anthropological implications. Therefore, the aims of the present study based on two manuscripts were: 1) to analyze hypoplasia, demarcated and diffuse opacity prevalence of deciduous and permanent teeth and verify the association of enamel defects and dental caries among preschool and scholars children in lndaiatuba, São Paulo in 2004; and 2) to analyze hypoplasia, demarcated and diffuse opacity prevalence on deciduous teeth and verify the association of enamel defects and dental caries among preschool children in 18 municipalities of Campinas aod Piracicaba region,in 2004. At manuscript 1, the sample consisted of 624 5-year olds from public and private schools and 309 12-year olds from public schools. At manuscript 2, the sample consisted of 4,259 5-year olds from 18 municipalities in Campinas and Piracicaba region. ln both studies the dmft lndex was used to analyze caries prevalence in deciduous teeth. ln the second study the DMFT was used to analyze caries prevalence in permanent teeth. The DDE lndex was used to assess enamel defects. The Chi-square test verified the possible association between enamel defects and dental caries. At manuscript 1, the prevalence of hypoplasia, demarcated and diffuse opacity in the primary dentition was 8.7%, 20.9%, and 11 %, respectively, while in the permanent dentition, such prevalence was 5.5%, 20.1%, and 21.7%, respectively. An association between dental caries and enamel defects (hypoplasia, demarcated opacity and diffuse opacity) was observed among children presenting caries experience (dmft>O) at age 5. However, in 12-year olds only hypoplasia and demarcated opacity were observed to be associated with caries presence. At manuscript 2, lower prevalence of demarcated opacity and hypoplasia among caries free preschool children. There was no difference among individuais presenting dmf=O and dmf>O (p=O.88) for diffuse opacities. At manuscript 2, the association between dental caries and enamel defects was verified according to ethnicity, this association lost its meaning at non white group (p=O.880); however, statistic significance was observed for dental caries associated with enamel defects in the white group (p=O.OOO). Thus, different types of defects should be more emphasized in epidemiological surveys because these defects might indicate a higher risk of dental caries as in both deciduous and permanent dentition; therefore, further studies are needed to investigate this association

ASSUNTO(S)

dental enamel hypoplasia hipoplasia do esmalte dentario

ACESSO AO ARTIGO

Documentos Relacionados