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检查在去髓牙上制作金属烤瓷冠的患者432例,男164例,女268例,年龄34～60岁。共有金属烤瓷冠1980个(单冠412个,作为固定桥的固位体1568个),经过临床和X线检查发现412个(20.88％)发生并发症,其中龈炎218,主要是基牙颈部未形成台肩、人造冠边缘位于龈缘以下者;慢性尖周炎(根尖囊肿和肉芽肿)98,主要是由于根管治疗不完善;牙周组织负荷过重61,由于咬合过高,有早接触和夜磨牙症等;烤瓷脱落18,和操作技术有关;人造冠松脱17,因基牙未形成固位形。 此外,本文作者为226例患者在去髓牙上制作了金属烤瓷冠1581个(单冠365个,作为固定桥的固位体
Check in to the pulp on the production of metal porcelain crown of 432 patients, 164 males and 268 females, aged 34 to 60 years. A total of 1980 metal porcelain crowns (412 single crown, as a fixed bridge retainer 1568), after clinical and X-ray examination found that 412 (20.88%) complications occurred, including gingivitis 218, mainly abutments No shoulders formed on the neck, the edges of artificial crowns were located below the gingival margin; chronic periapical (apical cysts and granulomas) 98 was mainly due to imperfect root canal treatment; periodontal tissue overload 61, High, early exposure and bruxism; porcelain off 18, and the operation of technology; artificial crown loose 17, because the abutment did not form a reunion shape. In addition, the authors of this article produced 1581 porcelain fused metal crowns of 226 patients (365 single crowns, as retainers for fixed bridges