A Prospective Randomized Study on the Immediate Loading of Mandibular Overdentures Supported by One or Two Implants; A 3 Year Follow-Up Report
A Prospective Randomized Study on the Immediate Loading of Mandibular Overdentures Supported by One or Two Implants; A 3 Year Follow-Up Report
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DOI：
10.1111/cid.12006
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发表时间：
2014-06-01
影响因子：
3.6
通讯作者：
Hollender, Lars
中科院分区：
文献类型：
--
作者：
Kronstrom, Mats;Davis, Ben;Hollender, Lars
目的评价和比较加载3年后即刻种植1~2颗种植体支持的下颌覆盖义齿的修复效果。材料与方法36例无牙颌患者符合纳入标准。使用随机抽样系统，在下颌骨中放置一个或两个种植体。将单独的球形附着体连接到种植体上，并在手术当天将义齿重新加衬并交付，将固位部件纳入义齿基托中。在随访检查中，对种植体周围骨水平、种植体和义齿稳定性/固位以及维护和调整的需要进行了评价。此外，OHIP-EDENT问卷用于测量患者满意度。结果19例受试者（男10例，女9例），平均年龄56岁。植入1个植入物的组（第1组）包括11名受试者（5名女性和6名男性），其余8名受试者（5名女性和3名男性）属于第2组。9名受试者在第一年因植入物失效而被排除，6名受试者移动，1名受试者死亡，1名受试者报告患有严重疾病。在12个月至36个月随访期间未观察到植入物失效。平均种植体周围骨变化为0.86 mm，种植体稳定性商数仅显示轻微变化，与12个月随访相比，两组之间无显著差异。与基线值相比，患者满意度评分显着增加，两组患者的满意度评分持续较高，义齿维护的需求较低。结论：两组受试者在种植体存活率和种植体骨丢失方面无显著差异，两组患者满意度评分持续较高。两组的义齿维护需求均较低。
Aim The objective of the study was to evaluate and compare treatments with mandibular overdentures supported by one or two immediately placed implants 3 years after loading. Materials and Methods Thirty-six edentulous subjects were eligible for inclusion. Using a random sampling system, one or two implants were placed in the mandible. Separate ball attachments were connected to the implants, and the denture was relined and delivered the day of surgery with the retentive components incorporated in the denture base. At the follow-up examinations peri-implant bone levels, implant and denture stability/retention, and need for maintenance and adjustments were evaluated. Moreover, the OHIP-EDENT questionnaire was used to measure patient satisfaction. Results Nineteen subjects (10 men and 9 women) with a mean age of 56 years were available for the 3-year follow-up examination. The group with 1 implant (Group 1) consisted of 11 subjects (5 women and 6 men) while the remaining 8 (5 women and 3 men) belonged to Group2. Nine subjects had been excluded during the first year due to failing implants, 6 had moved, 1 had died, and 1 reported severe illness. No implant failures between the 12-and 36 month follow-up were observed. The mean peri-implant bone change was.86mm and the Implant Stability Quotient showed only minor changes with no significant difference between the groups when compared with the 12-month follow-up. Patient satisfaction scores increased significantly when compared with the baseline values and continued to be high for both groups and need for denture maintenance was low. Conclusion No significant differences were found between subjects in the two groups with respect to implant survival and peri implant bone loss, and patient satisfaction scores continued to be high for both groups. Need for denture maintenance was low in both groups.