根管治療後之牙體復形：覆蓋式嵌體及髓腔固位冠

10.6666/ClinMed.2017.79.6.059

陳佩琪；葉聖威

覆蓋式嵌體(onlay) ； 髓腔固位冠(endocrown)

臨床醫學月刊

79卷6期（2017 / 06 / 30）

321 - 326

繁體中文

根管治療後的牙齒贗復方式包含以下幾種：樹脂填補、全覆蓋型牙冠、嵌體、髓腔固位冠等等。覆蓋式嵌體依材質分為鑄造嵌體及陶瓷嵌體，鑄造嵌體需精細的修磨，不論是機械強度或贗復物存活率，皆有很好的表現。陶瓷嵌體則需將齒質較圓潤且平滑的修磨，機械性質及存活率亦有不錯的表現。然而當牙冠部位齒質破壞程度更嚴重，同時牙根又較為彎曲脆弱，不適合進行牙根柱的放置，或者咬合空間不足，則可使用髓腔固位冠進行復形。髓腔固位冠條件上需要足夠深度的牙髓腔，及一定厚度的剩餘齒壁，機械性質的部分，若是使用陶瓷材料的髓腔固位冠，不論是承受垂直或側向力皆有好的表現，唯長期存活率仍有待觀察。

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