Comin Chiaramonti L, Cavalleri G
Dental School, Section of Endodontics, University of Verona, Verona, Italy.
Minerva Stomatol. 2011 Apr;60(4):217-22.
This case report describes the effect of unintentionally extruded mineral trioxide aggregate (MTA) into periradicular lesions on the prognosis of periradicular healing in maxillary right molar with periradicular lesion. A 39-year-old male patient with a periradicular lesion from the root perforation of his maxillary right first molar was referred to our Department. A root canal retreatment was performed and the root perforation was filled with MTA. During this procedure, an unintentionally extrusion of MTA into the periradicular lesion occurred. At follow-up, the tooth was asymptomatic and at radiography a repair of the lesion was evident. No endodontic surgical treatment was necessary. In this case the healing was possible despite the extrusion of the MTA. This might be due to the biologic properties of the MTA.
本病例报告描述了意外挤出的三氧化矿物凝聚体（MTA）进入根尖周病变对上颌右磨牙根尖周病变愈合预后的影响。一名39岁男性患者，上颌右第一磨牙根穿孔导致根尖周病变，转诊至我科。进行了根管再治疗，并用MTA填充根穿孔。在此过程中，MTA意外挤出进入根尖周病变。随访时，患牙无症状，影像学检查显示病变明显修复。无需进行牙髓外科治疗。在本病例中，尽管MTA挤出，但仍有可能愈合。这可能归因于MTA的生物学特性。
