Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
J Clin Periodontol. 2011 Feb;38(2):186-94. doi: 10.1111/j.1600-051X.2010.01650.x. Epub 2010 Nov 18.
this study compared the outcome of immediate non-occlusal loading with conventional loading for single implants in the maxillary aesthetic zone. It was hypothesized that immediate non-occlusal loading is not inferior to conventional loading.
sixty-two patients with a missing maxillary anterior tooth were randomly assigned to be treated with an implant that was either restored with a non-occluding temporary crown within 24 h after implant placement (the "immediate group") or was restored according to a two-stage procedure after 3 months (the "conventional group"). All implants were installed in healed sites. Follow-up visits were conducted after 6 and 18 months post-implant placement. Outcome measures were radiographic marginal bone-level changes, survival, soft tissue aspects (probing depth, plaque, bleeding, soft tissue level), aesthetics and patient satisfaction.
no significant differences were found between both study groups regarding marginal bone loss (immediate group 0.91 ± 0.61 mm, conventional group 0.90 ± 0.57 mm), survival (immediate group 96.8%: one implant lost, conventional group 100%), soft tissue aspects, aesthetic outcome and patient satisfaction.
within the limitations of this study (sample size, follow-up duration), it was demonstrated that, for single implants in the anterior maxilla, the outcome of immediate non-occlusal loading was not less favourable than conventional loading.
本研究比较了上颌美学区单种植体即刻非负重与传统负重的治疗效果。假设即刻非负重不劣于传统负重。
62 名上颌前牙缺失的患者被随机分为两组，一组在种植体植入后 24 小时内用非封闭临时冠修复（“即刻组”），另一组按两期手术修复（“传统组”）。所有种植体均植入愈合良好的部位。种植体植入后 6 个月和 18 个月进行随访。观察指标为影像学边缘骨水平变化、存活率、软组织状况（探诊深度、菌斑、出血、软组织水平）、美学效果和患者满意度。
即刻组和传统组的边缘骨吸收量（即刻组 0.91 ± 0.61mm，传统组 0.90 ± 0.57mm）、存活率（即刻组 96.8%：1 个种植体失败，传统组 100%）、软组织状况、美学效果和患者满意度均无显著差异。
在本研究的限制条件下（样本量、随访时间），单颗上颌前牙即刻非负重的治疗效果不劣于传统负重。
