Lundgren D, Laurell L, Falk H, Bergendal T
J Prosthet Dent. 1987 Aug;58(2):197-203. doi: 10.1016/0022-3913(87)90176-4.
The occlusal force pattern during chewing and biting was studied in eight edentulous patients whose dentitions had been restored with mandibular bilateral posterior two-unit cantilever fixed prostheses supported on osseointegrated titanium fixtures and occluding with complete maxillary dentures. The chewing pattern was comparable to that reported for subjects with complete healthy dentitions or with tooth-supported cross-arch fixed partial dentures. However, during chewing and swallowing the voluntary capacity of the jaw-closing muscles was used to a much greater extent. Contrary to reports for cantilevers in tooth-supported cross-arch unilateral posterior two-unit cantilever fixed partial dentures occluding with natural teeth, the posterior cantilever segments in the present fixture-supported cantilever prostheses occluding with complete dentures regularly exhibited the largest local forces. Despite this, material failures of this type of fixed prostheses are rare, as demonstrated in long-term follow-up studies.
对8名无牙患者进行了研究，这些患者的牙列已通过下颌双侧后牙双单位悬臂固定义齿修复，该义齿由骨结合钛种植体支持，并与全口上颌义齿咬合。其咀嚼模式与有完整健康牙列或牙支持式跨牙弓固定局部义齿的受试者的咀嚼模式相当。然而，在咀嚼和吞咽过程中，下颌闭合肌的自主能力被更大程度地利用。与牙支持式跨牙弓单侧后牙双单位悬臂固定局部义齿与天然牙咬合时悬臂的相关报道相反，在本种植体支持的悬臂义齿与全口义齿咬合时，后悬臂段经常表现出最大的局部力。尽管如此，长期随访研究表明，这种类型的固定义齿很少出现材料失败的情况。
