Elite Dental Clinic, Taipei, Taiwan
Oper Dent. 2010 May-Jun;35(3):370-4. doi: 10.2341/09-307-S.
Studies show that human permanent teeth with carious pulpal exposures can result in a high clinical success rate when treated with pulpotomy and direct pulp capping with mineral trioxide aggregate (MTA pulpotomy). In this case report, a 19-year-old female patient with a second premolar with irreversible pulpitis and symptomatic apical periodontitis was treated with MTA pulpotomy. Follow-up electric pulp tests showed viability of the tooth at three and 10 months. Ten months after the initial treatment, the tooth was extracted for orthodontic reasons and processed for histological examination. Microscopically, the pulpal wound treated with MTA was free from inflammation and covered with a thin layer of reparative dentin. The authors conclude that, when caries and bacterial contamination can be removed from the dentin-pulp complex, the inflamed but vital pulp of a permanent tooth may have a chance to return to a healthy, functional status after MTA pulpotomy.
研究表明，对于发生牙髓暴露的人恒磨牙，用活髓切断术联合三氧化矿物凝聚体（MTA 活髓切断术）直接盖髓治疗，具有较高的临床成功率。本病例报告中，对 1 例因不可逆性牙髓炎和症状性根尖周炎而就诊的 19 岁女性患者的第二前磨牙实施了 MTA 活髓切断术。术后 3 个月和 10 个月的电活力测试显示牙齿存活。初次治疗后 10 个月，由于正畸需要将患牙拔出，并进行组织学检查。显微镜下，MTA 处理的牙髓创面上无炎症反应，且被一层薄的修复性牙本质覆盖。作者总结认为，当龋坏和细菌污染能从牙本质牙髓复合体中去除时，感染的有活力的恒牙牙髓可能有机会在 MTA 活髓切断术后恢复到健康、有功能的状态。
