摘要
目的：髓室底较大穿孔在临床上常常导致牙齿丧失。为了保存和恢复受损牙的功能，采用MTA修复髓室底较大穿孔以观察其临床疗效。方法：选取7例临床上髓室底较大穿孔（〉2mm）的病例，第一次就诊：清理髓腔和根管，髓腔内和根管内封人氢氧化钙类药物（Vitapex），1周后，常规根管充填，髓室底穿孔处置MTA，厚度约1～4mm，上置一湿棉球，暂封5—7d后常规充填窝洞，拍摄术前、术中、术后X线片。术后0．5、1、2年后根据临床症状和X线片观察疗效。结果：7个髓室底较大穿孔的患牙1年后5个获得成功，无临床症状，能正常行使咀嚼功能。X线检查骨破坏面积缩小。2个患牙失败。结论：MTA具有良好的生物相容性，边缘密封好，微渗漏小，可以用于髓室底较大穿孔的修复，但它的远期疗效尚需进一步观察。
AIM： The large perforation of pulp cavity floor often causes tooth loss. In order to preserve the function of damaged tooth, MTA （ mineral trioxide aggregate） was used to repair the large perforation of pulp cavity floor. METHODS： Seven molars perforated in pulp cavity floor （ diameter 〉 2mm） caused by accident or carieas were selected and repaired with MTA. The bacteria from infected root canal and the perforation site were removed and medicated with calcium hydroxide for 1 week. The root canals were obturated conventionally with a canal sealer and guttapercha. MTA mixture was placed in the perforation site with a small amalgam carrier without pressure. A wet cotton pellet with sterile water was then placed in the pulp chamber and access cavity was closed with temporary filling material ZOE. After a week, the ZOE and the cotton pellet were removed and the tooth was filled with amalgam or resin. The clinical follow - up at 6 months, 1 and 2 years was evaluated according to clinical symptoms and X - ray examinations. RESULTS：At 6 -month to 2 -year follow -up period,5 cases revealed an adequate clinical function and an absence of clinical symptom. The radiographic follow - up revealed decrease of destroyed bone. The other two cases failed. CONCLUTION：MTA appears to be a valid option for repairing large perforation in pulp cavity floor but the long - term -outcome studies should be performed.
出处
《牙体牙髓牙周病学杂志》
CAS
2008年第7期386-389,共4页
Chinese Journal of Conservative Dentistry
关键词
髓室底穿孔
修补
MTA
perforation of pulp cavity floor
repair
mineral trioxide aggregate（MTA）
