严重上颌萎缩伴倾斜、腭向植入物时最大限度地利用上颌前壁支撑:初步研究。

Maximum use of the anterior maxillary buttress in severe maxillary atrophy with tilted, palatally positioned implants: a preliminary study.

机构信息

Valencia University Medical and Dental School, Spain.

出版信息

Int J Oral Maxillofac Implants. 2010 Jul-Aug;25(4):813-20.

DOI:
Abstract

PURPOSE

To evaluate an alternative treatment for rehabilitation of the atrophic maxilla with palatal and tilted implants and to assess patient satisfaction with the results.

MATERIALS AND METHODS

A retrospective case study was made of completely edentulous subjects with tilted, palatally positioned implants in the anterior maxillary buttress placed and loaded between January 2005 and January 2007. Patients with severely resorbed edentulous maxillae (Class V according to Cawood and Howell) who requested overdentures and were followed for 12 months after implant loading were included. Mesial and distal implant bone loss was measured on panoramic radiographs. Subjects indicated satisfaction with the new prosthesis after 12 months on a visual analog scale.

RESULTS

Twelve patients treated with tilted and palatal implants in the anterior maxillary buttress were included in the study; 48 implants were placed (4 implants in each patient) to support 12 overdentures with bars. One implant failed, resulting in a survival rate of 97.9%. The mean peri-implant bone loss of implants with palatal anchorage after 1 year of loading was 0.78 ± 0.5 mm. All patients had stable prostheses at the end of the observation period. Patients were satisfied with comfort and stability, ability to speak, ease of cleaning, esthetics, and function of the prosthesis.

CONCLUSION

Placement of implants slightly to the palatal and tilted in the anterior maxillary buttress to support an overdenture with bars may be a viable treatment alternative for the rehabilitation of the atrophic maxilla, providing a high level of satisfaction with the prosthesis and reducing patient morbidity and costs.

摘要

目的

评估一种用于修复上颌骨萎缩的替代性治疗方法,即在上颌前壁倾斜且腭侧植入种植体,并评估患者对治疗结果的满意度。

材料和方法

对 2005 年 1 月至 2007 年 1 月期间植入并负载的上颌前壁倾斜、腭侧植入物的完全无牙患者进行回顾性病例研究。纳入要求覆盖义齿且在植入物负载后随访 12 个月的严重上颌骨萎缩(根据 Cawood 和 Howell 分类为 V 类)无牙患者。在全景片上测量近中和远中种植体骨吸收情况。患者在植入物负载后 12 个月使用视觉模拟量表(VAS)表示对新修复体的满意度。

结果

研究纳入了 12 例在上颌前壁倾斜且腭侧植入物的患者,共植入 48 枚种植体(每个患者 4 枚)以支撑 12 个覆盖义齿。1 枚种植体失败,存活率为 97.9%。负载后 1 年,具有腭侧锚固的种植体的种植体周围骨平均丢失量为 0.78 ± 0.5mm。所有患者在观察期末均具有稳定的修复体。患者对舒适度和稳定性、说话能力、清洁难易度、美观度和修复体功能均表示满意。

结论

在上颌前壁略微向腭侧和倾斜方向植入种植体以支撑带杆的覆盖义齿可能是一种可行的治疗选择,可对上颌骨萎缩进行修复,患者对修复体的满意度高,同时降低患者的发病率和成本。

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