Rud J, Rud V, Munksgaard E C
Department of Dental Materials, School of Dentistry, Faculty of Health Sciences, University of Copenhagen, Denmark.
J Endod. 1997 Aug;23(8):535-41. doi: 10.1016/S0099-2399(97)80317-2.
Healing results were compared among 551 infected roots apically sealed with a dentin-bonded resin composite (Gluma-Retroplast). These roots contained either 1) root filling to apex after resection, 2) insufficient root filling, or 3) empty root canals with necrotic pulp remnants. At 2- to 4-yr follow-up, complete bone healing was found to be 92%, 85%, and 81% in groups 1, 2, and 3, respectively. The results from groups 1 and 3 were significantly different, and the results from group 2 did not differ significantly from that of groups 1 or 3. Reasons for "Failures" were found to be mainly loose filling or uncovered canal. After 21 roots classified as "Failures" were reoperated, 76% of these showed "Complete Healing" after 1 yr.
对551颗用牙本质粘结树脂复合体（Gluma-Retroplast）进行根尖封闭的感染根管的愈合结果进行了比较。这些根管包括：1）切除术后根管充填至根尖；2）根管充填不足；3）根管空虚但有坏死牙髓残留。在2至4年的随访中，第1、2、3组的完全骨愈合率分别为92%、85%和81%。第1组和第3组的结果有显著差异，第2组的结果与第1组或第3组无显著差异。“失败”的原因主要是充填物松动或根管未被覆盖。对21颗被归类为“失败”的根管再次手术后，其中76%在1年后显示“完全愈合”。
