Single tooth morse taper implant placement and restoration immediately after extraction

ABSTRACT Objective: to analyze aesthetic and functional outcomes of the rehabilitation of single tooth morse taper implant restoration with single crown prosthesis immediately after tooth extraction. Methods: Retrospective longitudinal clinical study of 57 patients submitted to an oral rehabilitation protocol with morse taper (Ankylos® Classic) dental implants, without performing incision, grafts nor suture, followed by the placement of a provisional prosthesis immediately after tooth removal in the anterior maxillary region. The pre-and post-operative clinical data (alveolar bone contour at vestibular aspect, soft tissue contour at cervical aspect and papillae level) and postoperative radiographic findings (bone height / implant ratio) were submitted to descriptive statistics (mean and standard deviation) and Fisher’s Exact Test. Results: the implant success rate was 98.25%. The alveolar bone vestibular aspect was maintained in 69.6% of the cases. There was no soft tissue retraction on the cervical aspect and the papillae height was preserved in 89.3% of the cases.The bone level remained above the implant neck in 92.8% of the cases. There was no significant association between implant diameter and soft tissue retraction (p = 0.910) or retraction of the interproximal papilla (p = 0.148) or resorption of the alveolar bone crest (p = 0.610). Conclusion: This protocol is characterized by the application of minimally traumatic techniques, reducing rehabilitation time and offering positive aesthetic and functional results.摘要 目的：分析拔牙后即刻采用单冠修复体行莫氏锥度（Morse Taper）种植体单牙修复的美学与功能疗效。 方法：本研究为回顾性纵向临床研究，纳入57例接受莫氏锥度（Morse Taper，Ankylos® Classic）种植体口腔修复方案的患者，术中不做切口、不植骨、不缝合，在上颌前牙区拔牙后即刻佩戴临时修复体。收集术前及术后临床数据（唇侧牙槽骨轮廓、颈缘软组织轮廓及牙龈乳头高度）与术后影像学检查结果（骨高/种植体比值），采用描述性统计（均值与标准差）及费希尔精确检验进行分析。 结果：种植体成功率为98.25%。69.6%的病例唇侧牙槽骨轮廓得以维持。颈缘软组织无退缩，89.3%的病例牙龈乳头高度得以保留。92.8%的病例骨水平维持在种植体颈缘以上。种植体直径与软组织退缩（p=0.910）、邻间牙龈乳头退缩（p=0.148）或牙槽嵴吸收（p=0.610）均无显著相关性。 结论：该修复方案采用微创技术，可缩短修复周期，并获得良好的美学与功能疗效。