摘要
目的评价E-max铸瓷高嵌体修复磨牙和前磨牙牙体缺损的临床效果。方法使用E-max铸瓷高嵌体修复根管治疗后牙体缺损患牙共173颗,其中磨牙128颗,前磨牙45颗,并于修复后即刻及修复后1年、2年、3年进行临床随访,采用改良美国公共卫生机构评价标准进行临床效果评价。结果修复后1年、2年、3年的累计失访牙数为3颗、3颗、8颗。第3年时,复诊病例中无1颗发生高嵌体脱落;继发龋的发生率仅为0.6%(1/165);牙体完整性也较为理想,除7颗边缘釉质崩裂外,无牙体折断发生;崩瓷或瓷裂发生率为3.0%(5/165);颜色匹配性评级,与邻牙的颜色及半透明性一致、少许不一致的比例分别为90.3%(149/165)和9.7%(16/165);边缘适合性和邻接点正常的比例均为97.0%(160/165)。结论采用E-max铸瓷高嵌体是修复根管治疗后牙体缺损较为可靠的一种方法。
Objective To restore tooth defect of endodontically treated premolars and molars with full-ceramic onlays,and to study the clinical effect of these onlays.Methods One hundred and twenty-eight molars and 45 premolars were restored with E-max onlays after root canal therapy.After 1 year,2 years and 3 years,patients were recalled for clinical study according to the modified USPHS criteria.Results The loss of follow-up after 1 year,2 years and 3 years are 3,3 and 8 restorations.None of their onlays fell out or none of them has severe tooth fracture after 3 years;0.6%(1/165) secondary caries and 3%(5/165) porcelain fracture occurred;90%(149/165) and 10%(16/165) were ascribed to A and B of color match;97%(160/165) had A-level marginal fit and contact.Conclusion It is a reliable method to restore tooth defect after root canal therapy with E-max full-ceramic onlays.However,the long term effect is still to be observed.
出处
《广东牙病防治》
2012年第11期597-600,共4页
Journal of Dental Prevention and Treatment
关键词
铸瓷
高嵌体
前磨牙
磨牙
Castable ceramic
Onlay
Premolar
Molar