| Summary: | 碩士 === 高雄醫學大學 === 牙醫學研究所碩士班 === 94 === Purpose:
The purpose of this study was to investigate the prevalence and distribution of traumatic injuries of primary teeth among preschool children in Kaohsiung, Taiwan.
Material and methods:
711 children (341 boys and 370 girls) aged 3-6 years old participated this study. Clinical examination records clinical evidence of traumatic dental injuries of each subject. Questionnaire about the history of dental trauma were completed by their parents.
Results:
Clinical examination revealed 19.41% of subjects with clinical signs of dental trauma. The most common type of dental injuries was enamel fracture (40.12%), followed by enamel-dentin fracture without pulp involved (28.49%). The maxillary teeth were more often affected than the mandibular teeth. Upper central incisors were mostly affected (81.98%).
The questionnaires indicated that the prevalence of dental injuries was 8.86%. Both enamel-dentin fracture without pulp involved (32.10%) and concussion (20.99%) were more common types of dental injuries. Falls were the major cause of trauma (52.61%). Most of the injuries had occurred at home (59.26%). The maxillary central incisors were the teeth most affected (88.89%).
There were no statistically differences in the susceptibility to traumatic dental injuries between boys and girls. The difference of the prevalence of traumatic dental injuries among different age groups was also statistically insignificant.
Conclusion:
The prevalence of traumatic dental injuries for preschool children in Kaohsiung was 19.41%. However, the questionnaires showed a smaller prevalence rate of 8.86% the difference could be caused by unawareness of the patients to the minor dental injuries of the children. The study reveals that upper incisors were the mostly affected teeth and majority of these cases involved crown fractures.
Key words: dental injury, primary teeth, preschool children
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