Creugers N H, Snoek P A, Van 't Hof M A, Käyser A F
Department of Occlusal Reconstruction, University of Nijmegen, The Netherlands.
J Oral Rehabil. 1990 Mar;17(2):179-86. doi: 10.1111/j.1365-2842.1990.tb01408.x.
A total of 203 resin-bonded bridges were inserted under controlled clinical conditions and evaluated over a period of 5 years. During the evaluation period there were 47 dislodgements and 30 pontic fractures. The majority of the failures were retreated successfully. Dislodgement was in most cases due to fracture at the resin/retainer interface. The small number of fractures at the resin/tooth interface indicate that the clinical procedures, as used in this study, were satisfactory. Dislodged and rebonded resin-bonded bridges had a lower retention than original bonded bridges, indicating that patients with a dislodged bridge are a risk group for the retention of rebonded bridges. However, possible factors that may be responsible for this higher risk could not be demonstrated. The bridges which were removed for repair of the pontics and rebonded showed an acceptable retention. There was no relationship between the failure characteristic and the retainer type or the cementation material used.
在可控的临床条件下共植入了203座树脂粘结桥，并在5年的时间里进行了评估。在评估期间，有47座桥脱位，30座桥体发生骨折。大多数失败病例均成功进行了再治疗。在大多数情况下，脱位是由于树脂/固位体界面处的骨折。树脂/牙界面处少量的骨折表明，本研究中所采用的临床操作是令人满意的。脱位后重新粘结的树脂粘结桥的固位力低于原始粘结桥，这表明桥体脱位的患者是重新粘结桥体固位的风险群体。然而，可能导致这种较高风险的因素尚未得到证实。因桥体修复而拆除并重新粘结的桥显示出可接受的固位力。失败特征与固位体类型或所使用的粘结材料之间没有关系。
