摘要
目的：探讨金属烤瓷修复对活髓牙牙髓组织的影响，分析引起牙髓病变的原因和此类牙髓病变的特点。方法：对８２７例１１４６颗活髓基牙烤瓷修复后进行综合性复查。结果：１１４６ 颗活髓基牙中有１４１颗（１２．３％）发生不同程度的牙髓病。２０岁以前的患者活髓牙制作ＰＦＭ时发生牙髓病变的机率较其它年龄组高。下前牙，双尖牙易发生牙髓病变，牙位与牙髓炎的发生有显著性关系。选做固定桥的基牙及因为牙列不齐或轻度错 畸型要求美容修复的牙引起牙髓病变的可能性明显高于单冠牙。牙髓炎的发生与冠边缘的密合性有关，冠边缘与基牙肩台越密台，牙髓炎发生越少。修复前基牙是否曾作龋洞充填与牙髓病变无关。牙髓炎主要集中在修复后１年内表现出症状，以慢性牙髓炎最常见，其次为急性牙髓炎，慢性尖周炎。结论：烤瓷修复后牙髓病变的发生与修复类型，冠边缘密合性，年龄，牙位有关。慢性牙髓炎是牙髓病变最常见类型。
Objective : To observe the effects of porcelain-fused-to-metal (PFM) restorations on dental pulp. Methods : 1146 PFM restorations of 827 cases were investigated . Results : 141(12.3%)tooth pulps were led to dental pulp lesion by PFM restorations .The pathological changes show significant relationship with different kind of tooth .The dental pulp lesions occurred more often in lower incisors ,premolars .abutment tooth of fixed bridge and malocclued tooth .The pulpitis have significant relationship with luation of crown margin and often occurred in one year after PFM restorations maken . The most common disease of pulpitis was chronic pulpitis . Conclusions: Dental pulp lesion by PFM restorations have significant relationship with luation of crown margin, different kind of tooth, age and restoration procedure.
出处
《口腔颌面修复学杂志》
2001年第3期149-151,共3页
Chinese Journal of Prosthodontics
关键词
金属烤瓷修复术
牙髓炎
烤瓷冠
porcelain-fused-to-metal
dental pulp lesion
restorations
