구개측 굴곡파절이 있는 상악 구치의 교합면 마모 양상에 대한 연구
A study on the occlusal wear patterns in maxillary posterior teeth with palatal side abfractions
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목적: 구개측 굴곡파절이 있는 상악 구치의 교합면 마모 양상을 분석하여, 교합력과 굴곡파절의 연관성에 대해 연구해보고자 한다. 연구 재료 및 방법: 상악 구치에서 구개측 굴곡파절을 가지고 있는 148명의 환자, 총 308개의 치아를 대상으로 조사를 진행하였다. 구개측 굴곡파절을 가지고 있는 상악 소구치와 대구치의 교합면 마모를 분류 및 기록하였다. 치아별, 연령별, 성별에 따라 분류를 진행하였고, 그룹간의 통계적 유의성을 평가하기 위해 Chi-square test를 시행하였다(α = 0.05). 결과: 상악 구치에서 구개측 굴곡파절은 제1대구치에서 가장 높은 빈도로 관찰되었고, 구개측 굴곡파절이 있는 모든 치아에서 하나 이상의 교합면 마모가 관찰되었다. 치아별, 연령별, 성별 모두에서 구개측 굴곡파절이 있는 치아의 교합면마모는 교두 내사면과 중심와 및 변연융선에서 높은 빈도로 관찰되었으며 통계적으로 유의성이 있었다(P < 0.05). 결론: 구개측 굴곡파절은 상악 제1대구치에서 가장 많은 빈도로 관찰되었고, 구개측 굴곡파절이 관찰된 상악 구치 모두에서 교합면 마모가 관찰되었다. 그리고 교합면 마모는 교두 내사면과 중심와 및 변연융선에서 많은 빈도로 관찰되었다. 이와 같은 결과는 굴곡파절이 교합력과 연관이 있음을 보여준다.
Abstract
Purpose: Aims to analyze the occlusal wear patterns in maxillary posterior teeth with palatal side abfractions and study the association between occlusal force and abfractions. Materials and Methods: This study was conducted in a total of 308 teeth from 148 patients with palatal side abfractions in maxillary posterior teeth. The occlusal wears in maxillary premolars and molars with palatal side abfractions were classified and recorded. The classification was done by type of teeth, age, and gender, and in order to evaluate the statistical significance between groups, chi-square test was conducted (α = 0.05). Results: Palatal side abfractions in maxillary posterior teeth were observed at the highest frequency in the 1st molars, and in all teeth with palatal side abfractions, more than one occlusal wear was observed. In classification by type of teeth, by age, and by gender, the occlusal wears in teeth with palatal side abfractions were observed at high frequency in cuspal inclined plane, central fossa, and marginal ridge, and there was a statistical significance (P < 0.05). Conclusion: Palatal side abfractions were observed at the highest frequency in maxillary 1st molars, and in all maxillary posterior teeth where palatal side abfractions were found, the occlusal wears were observed. And the occlusal wears were observed at high frequency in cuspal inclined plane, central fossa and marginal ridge. Such results show that abfraction is associated with occlusal force.
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