Bedrossian Edmond, Bedrossian Edmond Armand
Professor, Department of Oral and Maxillofacial Surgery, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California; Diplomate, American Board of Oral and Maxillofacial Surgery; Honorary Member, American College of Prosthodontists.
Private Practice, Prosthodontist, San Francisco, California.
Compend Contin Educ Dent. 2019 Jan;40(1):20-25; quiz 26.
Patients who are candidates for implant restoration of a completely edentulous maxilla may benefit from a fixed prosthesis rather than a removable tissue-supported overdenture prosthesis. Multiple surgical approaches are available to provide this type of care. Graftless strategies, such as those that utilize tilted implants, including zygomatic implants, allow the surgeon to establish adequate support for a fixed prosthesis without bone grafting by establishing sufficient anterior-posterior distribution of implants, thereby reducing or eliminating the use of distal cantilevers. For surgeons who may prefer to use a grafting approach for bone reconstruction in this group of patients, adjunctive procedures such as sinus grafting, maxillary osteotomies, and horizontal augmentations also are available. Being able to determine early in the consultation process the type of final prosthesis and surgical approach needed to provide the optimal functional and esthetic results is advantageous. Therefore, a systematic treatment planning protocol is essential for the evaluation of edentulous patients and those with terminal dentitions.
对于全上颌无牙颌患者,如果是种植修复的候选人,使用固定义齿可能比使用可摘组织支持覆盖义齿更有益。有多种手术方法可用于提供此类治疗。无植骨策略,例如那些利用倾斜种植体(包括颧骨种植体)的策略,可使外科医生在不进行骨移植的情况下,通过建立足够的种植体前后分布,为固定义齿建立足够的支撑,从而减少或消除远端悬臂的使用。对于可能更倾向于在这类患者中采用植骨方法进行骨重建的外科医生,也可采用诸如鼻窦植骨、上颌骨截骨术和水平骨增量等辅助手术。在咨询过程早期就能确定提供最佳功能和美学效果所需的最终义齿类型和手术方法是很有好处的。因此,系统的治疗计划方案对于无牙颌患者和晚期牙列患者的评估至关重要。