Behneke Alexandra, Behneke Nikolaus, d'Hoedt Bernd
Department of Oral Surgery, University of Mainz, Germany.
Int J Oral Maxillofac Implants. 2002 Nov-Dec;17(6):799-810.
The aim of this longitudinal study was to gain 5-year clinical documentation of the 1-stage surgical technique in connection with ITI solid-screw implants used in the edentulous mandible.
One hundred patients with totally edentulous mandibles were treated with bar-retained overdentures supported by a total of 340 consecutively placed ITI solid-screw implants. The patients were followed at annual intervals for at least 5 years to evaluate implant success, longitudinal reactions of the peri-implant hard and soft tissues, and incidences of biologic and mechanical complications.
During the trial period, a total of 4 implants failed, all prior to loading, and 51 implants were lost to follow-up, resulting in a cumulative survival rate of 98.8% after 5 years of functional service. The success analysis included additional strictly defined events (either "first occurrence of marginal bone loss > or = 4 mm" or "first occurrence of pocket depth > or = 4 mm" and "first occurrence of crevicular fluid flow rate > or = 2.5 mm) and resulted in a cumulative 5-year success rate of 95.7%. The median marginal bone loss experienced between implant placement and prosthetic treatment was 0.5 mm, followed by an annual bone level change of 0.1 mm for the functional period of 5 years. The increasing incidence of remarkable plaque deposits from 19% to 50% represented the difficulties of the patients in maintaining a high level of oral hygiene, particularly for the lingual surfaces. Sulcus Bleeding Index, probing depth, attachment level, and crevicular fluid flow rate were used to describe the health of the peri-implant soft tissues and remained almost within acceptable standards.
Survival and success rates of implants, amount of marginal bone loss, and periodontal indices of peri-implant soft tissues were consistent with those reported in the literature regarding implants with the submerged healing concept.
With a cumulative survival rate of 98.8%, a cumulative success rate of 95.7%, and a median marginal bone loss of 0.5 mm during the healing period, followed by an annual rate of 0.1 mm after loading, non-submerged ITI solid-screw implants confirm the good clinical outcome of implant-supported treatment concepts for the rehabilitation of totally edentulous patients in a medium-term perspective.
本纵向研究的目的是获取关于在下颌无牙颌中使用ITI实心螺钉种植体的一期手术技术的5年临床记录。
100例下颌完全无牙的患者接受了由总共340枚连续植入的ITI实心螺钉种植体支持的杆式覆盖义齿治疗。每年对患者进行随访，至少随访5年，以评估种植体成功率、种植体周围软硬组织的纵向反应以及生物和机械并发症的发生率。
在试验期间，共有4枚种植体失败，均在加载前失败，51枚种植体失访，经过5年的功能使用后，累积生存率为98.8%。成功分析包括其他严格定义的事件（“首次出现边缘骨吸收≥4mm”或“首次出现牙周袋深度≥4mm”以及“首次出现龈沟液流速≥2.5mm”），5年累积成功率为95.7%。种植体植入与修复治疗之间的边缘骨吸收中位数为0.5mm，在5年的功能期内，每年骨水平变化为0.1mm。显著菌斑沉积的发生率从19%增加到50%，这表明患者在保持高水平口腔卫生方面存在困难，尤其是舌侧表面。龈沟出血指数、探诊深度、附着水平和龈沟液流速用于描述种植体周围软组织的健康状况，且几乎保持在可接受标准范围内。
种植体的生存率和成功率、边缘骨吸收量以及种植体周围软组织的牙周指数与文献中报道的采用潜入式愈合概念的种植体一致。
累积生存率为98.8%，累积成功率为95.7%，愈合期边缘骨吸收中位数为0.5mm，加载后每年为0.1mm，非潜入式ITI实心螺钉种植体从中期角度证实了种植体支持治疗概念在全口无牙患者修复中的良好临床效果。
