用两个无夹板窄直径钛锆种植体固定上下颌覆盖义齿--一项临床试验研究。

IF 4.8 1区 医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE
Jaana-Sophia Kern, Esra Salin, Dirk Elvers, Anne Rittich, Taskin Tuna, Frank Hölzle, Stefan Wolfart
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引用次数: 0

摘要

目的评估支撑上下颌全口义齿的窄直径钛锆种植体在装载后 3 年内的存活率和边缘骨流失情况:选取了10名对全口义齿不满意的完全无牙颌患者。在上颌骨和下颌骨的犬齿区植入两个窄直径种植体。第二阶段手术后,植入种植体支持的覆盖义齿(无腭侧),并通过平行可对准的螺柱连接。对患者进行了长达 36 个月的定期随访。分别在基线期、12个月和36个月时拍摄标准化X光片,分析种植体周围平均边缘骨水平的变化:36 个月时,下颌种植体的 Kaplan-Meier 成活率为 100%,上颌种植体的 Kaplan-Meier 成活率为 68.0%(SE ± 10.9%)(p = .008)。六颗上颌种植体在装载后失败;没有下颌种植体丢失。五颗种植体因骨结合丧失而失败。一个种植体断裂。随访 36 个月时,分析的种植体(n = 28,9 位患者)周围的平均边缘骨水平变化为:下颌 -0.71 ± 0.82 mm,上颌 -2.08 ± 1.52 mm。在 12 个月和 36 个月的随访中,上颌骨和下颌骨的边缘骨水平变化差异显著(p = .019):结论:两颗带螺柱附着体的窄直径钛锆种植体在下颌的效果非常令人满意。与下颌种植体相比,上颌种植体的失败率较高,而且随着时间的推移,骨质流失明显增多。两个种植体和一个覆盖义齿的最小概念应仅限于无牙颌。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Maxillary and mandibular overdentures retained by two unsplinted narrow-diameter titanium-zirconium implants – A clinical pilot study

Maxillary and mandibular overdentures retained by two unsplinted narrow-diameter titanium-zirconium implants – A clinical pilot study

Objectives

To evaluate the survival rates and marginal bone loss of narrow-diameter titanium-zirconium implants supporting complete maxillary and mandibular overdentures up to 3 years after loading.

Materials and Methods

Ten completely edentulous patients who were dissatisfied with their complete dentures were enrolled. Two narrow-diameter implants were placed in the canine region of the maxilla and mandible. After second-stage surgery, implant-supported overdentures (palatal-free) attached by parallel alignable stud-attachments were placed. Patients were followed periodically for up to 36 months. Standardized radiographs were taken at baseline, 12 and 36 months to analyze mean marginal bone level changes around the implants.

Results

The Kaplan–Meier survival rates were 100% for mandibular and 68.0% (SE ± 10.9%) for maxillary implants at 36 months (p = .008). Six maxillary implants failed after loading; no mandibular implants were lost. Five implants failed due to loss of osseointegration. One implant fractured. The mean marginal bone level changes around the analyzed implants (n = 28, 9 patients) were −0.71 ± 0.82 mm in the mandible and −2.08 ± 1.52 mm in the maxilla at the 36-month follow-up. The difference in marginal bone level changes between the maxilla and mandible was significant (p = .019) at the 12- and 36-month follow-ups.

Conclusion

Two narrow-diameter titanium-zirconium implants with stud-attachments showed a highly satisfactory outcome in the mandible. The maxillary implants showed a high failure rate and significantly more bone loss over time than the mandibular implants. The minimal concept of two implants and an overdenture should be limited to the edentulous mandible.

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来源期刊
Clinical Oral Implants Research
Clinical Oral Implants Research 医学-工程:生物医学
CiteScore
7.70
自引率
11.60%
发文量
149
审稿时长
3 months
期刊介绍: Clinical Oral Implants Research conveys scientific progress in the field of implant dentistry and its related areas to clinicians, teachers and researchers concerned with the application of this information for the benefit of patients in need of oral implants. The journal addresses itself to clinicians, general practitioners, periodontists, oral and maxillofacial surgeons and prosthodontists, as well as to teachers, academicians and scholars involved in the education of professionals and in the scientific promotion of the field of implant dentistry.
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