Malmgren B, Cvek M, Lundberg M, Frykholm A
Scand J Dent Res. 1984 Oct;92(5):391-9. doi: 10.1111/j.1600-0722.1984.tb00907.x.
A method for preserving the alveolar ridge of ankylosed and infrapositioned incisors and improving conditions for a subsequent prosthetic therapy is described and evaluated clinically and radiographically. The method involves removal of the crown and root filling from the root, which is retained and covered with a mucoperiosteal flap. Clinically, there were no postoperative complications and after the follow-up a satisfactory prosthetic restoration was performed in all cases, regardless of the degree of infraposition before treatment. Radiographically, no pathologic changes were observed apart from a continuous resorption and replacement of lost root substance by bone. Alveolar bone level shifted only slightly between postoperative and 12-month follow-up radiographs, in a majority of cases in a coronal direction.
本文描述并临床及影像学评估了一种保留强直性和低位切牙牙槽嵴并改善后续修复治疗条件的方法。该方法包括从牙根上去除牙冠和根管充填物，保留牙根并用粘骨膜瓣覆盖。临床上，术后无并发症，随访后所有病例均进行了满意的修复，无论治疗前低位程度如何。影像学上，除了牙根物质持续吸收并被骨替代外，未观察到病理变化。在大多数病例中，术后和12个月随访X线片之间牙槽骨水平仅轻微移位，且多为向冠方移位。
