Wright P S, Watson R M, Heath M R
Department of Prosthetic Dentistry, London Hospital Medical College Dental School, England.
Int J Oral Maxillofac Implants. 1995 Jan-Feb;10(1):79-87.
Two groups of patients were provided with implant-stabilized mandibular overdentures supported by straight ovoid prefabricated bars with a resilient joint or parallel-sided bars with a rigid joint. Measurements of plaque index, mucosal cuff health and height, marginal bone height, pathology of the denture-bearing mucosa, and patient satisfaction were correlated with the different bar designs. Ovoid bars with a resilient joint between the denture and the bar have been shown to give a slightly increased incidence of problems associated with the denture-bearing mucosa. Furthermore, the only significant mean increase in recession of the mucosal cuff was found on the distal surfaces of the distal abutments in this group of patients.
两组患者分别佩戴由带有弹性关节的直卵形预制杆或带有刚性关节的平行边杆支撑的种植体稳定下颌覆盖义齿。对菌斑指数、黏膜袖口健康状况和高度、边缘骨高度、义齿承托黏膜病理学以及患者满意度进行测量，并与不同的杆设计相关联。已表明义齿与杆之间带有弹性关节的卵形杆会使与义齿承托黏膜相关的问题发生率略有增加。此外，在这组患者中，仅在远中基牙的远中表面发现黏膜袖口退缩有显著的平均增加。
