改良铸造金属桩治疗上颌第一磨牙重度牙体缺损44例临床观察

Clinical effect on the 44 patients of the badly damaged maxillary first molar tooth by the improve metal cast post to use on the post core crown

目的研究一种改良铸造金属桩方法治疗上颌第一磨牙重度牙体缺损的，瞄床应用效果。方法临床选取我院口腔修复门诊2011年5月-2013年5月病例44例为观察组，男17例女27例，年龄23-47岁，皆为上颌第一磨牙残根残冠，根管治疗充分，采用舌侧铸造金属桩核与颊侧纤维增强树脂桩核的改良方法联合应用进行修复；对照组选择同期同标准病例42例，男20例女22例，直接用铸造金属桩方法进行修复。结果改良铸造金属桩方法粘接治疗成功率为97．7％，固位强度明显提高、临床效果满意，操作简便。结论临床应用舌侧铸造金属桩核与颊侧纤维增强树脂桩核的改良铸造金属桩方法治疗上颌第一磨牙重度牙体缺损，既节约了成本又达到桩核固位与抗力的要求。

Objective To study the clinical effect of the improve metal cast post core used on the badly damaged maxillary first molar tooth. Methods Prepare the clinical patients 44 members,men 17,women 27,from 23 to 47 years old.elect the residual roots or crowns of the maxillary first molar tooth,the root canal treatment is correct and perfect. The lingual root post is made of the medal cast post core,and leave two small caves in the core;then insert the fiber composite resin posts in the buccal root canals and cling them. Then combine to use as the improve metal post on the post core crown, the control group clinical patients are 42 members,men 20,women 22 .Results The improve metal post can improve the strength of the cling post core,clinical effect is perfect,operation is easy and convenient. Coneluslon The improve metal post to treat the badly damaged maxillary first molar tooth not only spare the materials but also improve the post＇s resistance form and retention form.