Karakoca Secil, Aydin Cemal, Yilmaz Handan, Bal Bilge Turhan
Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.
J Prosthet Dent. 2008 Dec;100(6):458-64. doi: 10.1016/S0022-3913(08)60265-6.
STATEMENT OF PROBLEM: The use of implants with extraoral prostheses provides excellent support, stability, and retention, thereby offering the potential for improving a patient's appearance and quality of life. However, few studies have examined cumulative survival rates of extraoral implants, nor have these reports documented long-term aspects of treatment, such as soft tissue health around abutments. PURPOSE: The purpose of this study was to evaluate the survival rates and the periimplant soft tissue responses of extraoral implants used to retain facial prostheses. MATERIAL AND METHODS: Thirty-three patients with auricular, nasal, and orbital anatomical compromise were treated with 98 craniofacial and dental implants. Of the 33 patients, 14 had auricular, 9 had nasal, and 10 had orbital defects. After a 3-month osseointegration period, implant-retained prostheses were fabricated. Following completion of treatment, each patient was seen at 6-month intervals. These examinations were recorded for this patient cohort from 25 to 50 months. Data were analyzed using Kaplan-Meier survival analysis. A 5-point scale was used to record the health of periimplant soft tissues. The unit of measure as a visit/site unit was assigned for each instance and implant site. Periimplant soft tissue reactions were assessed for auricular, nasal, and orbital defects, for each implant site used for these patients' treatments. RESULTS: The overall cumulative survival rates were 100% for auricular, 83.3% for nasal, and 77.4% for orbital implants, respectively. The survival rates of the implants were 72.7% for those placed in irradiated sites treated without adjunctive HBO therapy, and 93.4% for implants placed in nonirradiated sites. To evaluate the response of the periimplant soft tissues to the implants, a total of 524 visits/sites were recorded. Absence of inflammation (grade 0) of the periabutment soft tissues was observed in 73.3% of the visits/sites. CONCLUSIONS: The anatomical site into which the implant is placed has an effect on success rate. The auricular site is the most predictable implant site. Survival rates of nasal and orbital implants were found to offer promising results in achieving reliable implant prognoses in these regions. Regardless of the implant site, a decreased survival rate was observed in the irradiated sites. Periimplant soft tissue reactions were most commonly associated with lapses in hygiene.
问题陈述:使用带有口外假体的种植体可提供出色的支撑、稳定性和固位力,从而有可能改善患者的外观和生活质量。然而,很少有研究考察口外种植体的累积生存率,这些报告也未记录治疗的长期情况,如基台周围的软组织健康状况。 目的:本研究的目的是评估用于固位面部假体的口外种植体的生存率和种植体周围软组织反应。 材料与方法:33例有耳廓、鼻和眼眶解剖结构受损的患者接受了98枚颅面和牙种植体治疗。33例患者中,14例有耳廓缺损,9例有鼻缺损,10例有眼眶缺损。经过3个月的骨结合期后,制作种植体固位的假体。治疗完成后,每隔6个月对每位患者进行复查。对该患者队列在25至50个月期间的这些检查进行记录。采用Kaplan-Meier生存分析对数据进行分析。使用5分制记录种植体周围软组织的健康状况。为每个病例和种植位点指定以就诊/位点为单位的测量单位。对用于这些患者治疗的每个种植位点的耳廓、鼻和眼眶缺损的种植体周围软组织反应进行评估。 结果:耳廓种植体、鼻种植体和眼眶种植体的总体累积生存率分别为100%、83.3%和77.4%。在未接受辅助高压氧治疗的照射部位植入的种植体生存率为72.7%,在未照射部位植入的种植体生存率为93.4%。为评估种植体周围软组织对种植体的反应,共记录了524次就诊/位点。在73.3%的就诊/位点观察到基台周围软组织无炎症(0级)。 结论:种植体植入的解剖部位对成功率有影响。耳廓部位是最可预测的种植位点。鼻和眼眶种植体的生存率在这些区域实现可靠的种植预后方面显示出有希望的结果。无论种植位点如何,照射部位的生存率均降低。种植体周围软组织反应最常与卫生习惯不良有关。
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