关键词: 种植覆盖义齿, 杆卡式附着体, 低平牙槽嵴, 松软牙槽嵴, 开窗印模, 无牙颌

Abstract: Objective: Demonstrate the standardized treatment process and enhance prosthesis quality through a case of edentulous jaw rehabilitation using mandibular dual implant-bar clip-assisted overdenture combined with maxillary fibrous alveolar ridge windowing impression technique. Diagnosis and Treatment: Standardized fabrication of preliminary impressions and models for edentulous patients, followed by preoperative cone beam computed tomography(CBCT) examination. Two implants were placed in regions  and . Customized windowed trays were designed for both arches, and final impressions with precise models were obtained. After recording and transferring jaw relations, a dentition guide and cast bar were fabricated. The prosthesis was finally tried in and adjusted intraorally. Results: Post-restoration, the denture exhibited excellent retention and stability. The patient’s masticatory and speech functions were significantly improved, with self-satisfaction. During follow-up, no significant bone resorption was observed around the implants and the denture remained stable in use. Conclusions: Favorable restorative outcomes can be achieved by selecting suitable restoration methods according to the intraoral conditions of edentulous patients and standardizing the operation.

Key words: implant-retained overdenture, bar-clip attachment, atrophic alveolar ridge, fibrous alveolar ridge, windowed impression, edentulous jaw