Mandibular overdentures anchored to single implants: A five-year prospective study
Mandibular overdentures anchored to single implants: A five-year prospective study
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DOI：
10.1016/s0022-3913(97)70120-3
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发表时间：
1997-08-01
影响因子：
4.6
通讯作者：
Castagna, S
中科院分区：
文献类型：
--
作者：
Cordioli, C;Majzoub, Z;Castagna, S
问题陈述。目前尚不清楚需要多少种植体才能令人满意地支撑和保留下颌骨覆盖义齿。本研究的目的是评估在老年患者群体中使用下颌覆盖义齿固定于单种植体的治疗方式。材料和方法。21例患者平均年龄74.2岁，采用标准的两期手术技术在下颌中线植入单种植体。将o形环或球状附着体连接到种植体上，作为覆盖义齿的支抗。对种植成功率、口腔舒适度和功能的改善、种植体周围软组织的状况、骨膜测试值和近端间边缘骨水平进行了评估。在随访期间没有植入物丢失。60个月时，平均边缘骨丢失1.42 +/- 0.56 mm。牙菌斑指数在所有重新评估的间隔时间内都持续高，但与低牙龈指数相关。在整个随访期间，袋深平均为2.41±0.17 mm。复盖义齿治疗后，患者口腔功能及舒适性均有显著改善。下颌覆盖义齿固定在单种植体上的康复治疗是传统下颌义齿不适和功能困难的老年患者的一种治疗选择。
Statement of problem. It is unknown what minimum number of implants are required to satisfactorily support and retain a mandibular overdenture.Purpose. The purpose of this study was to evaluate a treatment modality by using mandibular overdentures anchored to single implants in a geriatric patient population.Material and methods. Twenty-one patients with a mean age of 74.2 years were treated with single implants inserted at the mandibular midline according to the standard two-stage surgical technique. O-Ring or ball attachments were connected to the implants and served as overdenture anchorage. Implant success rate, improvement of oral comfort and function, condition of the peri-implant soft tissues, Periotest values, and the interproximal marginal bone level were evaluated for up to 5 years after delivery of the overdentures.Results. None of the implants were lost during the follow-up period. A mean marginal bone loss of 1.42 +/- 0.56 mm was noted at 60 months. Plaque Index nas consistently high around the abutments at all reevaluation intervals but was associated with a low Gingival Index. Pocket Depth averaged 2.41 +/- 0.17 mm for the entire follow-up period. Remarkable improvement of oral comfort and function were evidenced with the overdenture treatment.Conclusion. Rehabilitation with mandibular overdentures anchored to a single implant can be a therapeutic alternative for elderly patients experiencing discomfort and functional difficulties with conventional mandibular dentures.