総義歯破折症例の評価

Assessment of Cases of Complete Denture Fracture.

抄録

背景:

総義歯の破折には様々な原因や理由がある。本研究では、総義歯の破折症例について評価を行った。

Background: There are many causes and reasons associated with fractures of complete dentures. The present study assessed case of complete denture fracture.

材料と方法:

当院補綴科に来院した総義歯破折症例150例を対象とし、精査を行った。その際、保定力、安定性、咬合異常などの要因を記録した。また、義歯破折の原因も記録した。

Materials and Methods: One hundred and fifty complete denture wearers reported to the department of prosthodontics for correction of complete denture fracture were examined carefully. The factors such as retention, stability, and occlusal errors were recorded. Cause of denture fracture was recorded too.

結果:

150名の患者のうち、男性80名、女性70名であった。破折部位は，切歯部25例，犬歯部30例，正中線部50例，臼歯部10例，上顎結節・後臼歯部35例であった．義歯破損の病因は，落下事故42例，適合不良28例，咬合不良40例，材料破損25例，アクリルベース欠損15例であった．その差は統計学的に有意であった（< 0.05）．

Results: Out of 150 patients, males were 80 and females were 70. The site of fracture was incisor area in 25, canine area in 30, midline in 50, molar area in 10, and maxillary tuberosity/retromolar pad area in 35 cases. The etiology of denture fracture was accidental fall in 42, poor fit in 28, poor occlusion in 40, material breakage in 25, and acrylic base defect in 15 cases. The difference was statistically significant ( < 0.05).

結論:

義歯破折の原因は，転倒事故，装着不良，咬合不良，材料破損が上位を占めた．

Conclusion: Most common cause of denture fracture was accidental fall, poor fit, poor occlusion, and material breakage.