锤造全冠的适合性实验研究（三种缩颈方法的比较）  

AN EXPERIMENTAL STUDY ON THE FIT OF SWAGED METAL FULL CROWN

作　　者：何邕江 陈放 

出　　处：《广西医科大学学报》1994年第2期175-177,共3页Journal of Guangxi Medical University

摘　　要：用实验方法比较三种常用的缩颈方法及评价锤造全冠的边缘适合性。结果表明各组边缘间隙均大于０．１８０ｍｍ，说明锤造全冠边缘适合性较差，临床检查难以确定其间隙大小。各组近胎面轴壁间隙较小，这与冠成形时此处受力较大，冠周径变小有关，提示临氏上应避免用力和反复锤击此处。各组胎面间隙均大于０．１３０ｍｍ，表明面升高，边缘浮出量较大，冠尚未完全就位。当硬铅代型与缩颈器之间未预留冠套间隙时，所得的锤造全冠适合性更差，面间隙最大（０．９４５ｍｍ）。This was a comparative experimental investigation in which three methods wereused for forming the cervical portion of the swaged full crown,that is,①by an extrusionmoulding with hard lead alloy by piecing together three sections,or ② with putty,or ③ withpolyurethane. he results showed that among the above three methods the fit ofthe crown withhard lead alloy swager was the worst.In this investigation the authovs used a medium betweendie and hard lead swager which improved the fit ofthe crowns.

关 键 词：锤造全冠 适合性 HE面 

分 类 号：R783.3[医药卫生—口腔医学]