IADR Abstract Archives

Craniofacial Growth Changes in Children with Severe Tooth Wear

Objectives: Presence of pronounced incisal and occlusal wear in primary dentition is fairly common in children. Several studies were conducted in order to elucidate the possible etiologic factors associated with the condition, however, very little information is available that would explain possible link between growth changes in the craniofacial structures and the occurrence of tooth wear in children. Thus, this study was aimed to find any relationships between craniofacial growth changes and the occurrence of incisal wear in children. Materials and methods: 27 sets of series of dental casts and corresponding lateral cephalograms were selected from the archive of Pediatric Dentistry Department of Tokyo Medical and Dental University Hospital, collected from 1960 until 1980. All the cases are with normal dentition without any missing teeth or irregularities in occlusion. Samples were divided into two groups based on the degree of incisal wear observed on the maxillary incisor teeth in the late deciduous dentition stage: Slight attrition(Group I) and severe attrition groups(Group II).Lateral cephalograms at early deciduous dentition (T1) and late deciduous dentition (T2) stages were manually traced and 17 linear and 22 angular measurements were measured with analyzing software (WinCeph ver.9). Growth rate for each sample was calculated. Two-independent-sample t-test was applied to determine any significant difference in the growth rate of samples between two groups. Discriminant analysis was further applied to determine any significant variables that could define classification of cases. Results: Significant decrease in ∠U1-FH and Is-Is' was observed in severe attrition group whereas Mo-Ms and Is-Mo were significantly increased in slight attrition group.Discriminant analysis results showed that with ∠U1-FH and ∠occlusal plane-FH, 77.8% of cases were classified accordingly. Conclusions: Some craniofacial changes were associated with the incisal tooth wear in primary teeth.∠U1-FH and ∠occlusal plane-FH are significant determinants of classification between the two groups.
Japanese Division Meeting
2011 Japanese Division Meeting (Hiroshima, Japan)
Hiroshima, Japan
2011

Scientific Groups
  • Isidro, Sharon  ( Tokyo Medical & Dental University, Tokyo, N/A, Japan )
  • Ono, Yoshiaki  ( Tokyo Medical & Dental University, Tokyo, N/A, Japan )
  • Takagi, Yuzo  ( Tokyo Medical & Dental University, Tokyo, N/A, Japan )
  • Craniofacial Biology