Bitter Robert N
North Shore Periodontics and Implantology Limited, Illinois 60077, USA.
Int J Periodontics Restorative Dent. 2010 Apr;30(2):195-201.
Hard and soft tissue alveolar ridge deformities occur following the extraction of teeth, creating functional and esthetic tooth replacement challenges, especially in the maxillary anterior smile zone. A surgical technique using a rotated palatal flap for ridge preservation is discussed that, whether combined with conventional fixed dentures or implant treatment for tooth replacement, provides the possibility for greatly improved esthetics. This technique, used in combination with or in preparation for implant treatment, allows for preservation of the alveolar bone height and width for improved implant size and placement options. In addition, preservation and enhancement of the soft tissue at the extraction site provides for soft tissue contours adjacent to the definitive restoration that vary little from those of the original natural tooth. Combined with conventional fixed dentures, use of this technique creates a template of the labial and interproximal sulcus of the extracted tooth, allowing for the molding of an ovate pontic replacement tooth. This results in vastly improved restorative emergence profiles with minimal or no change in the height of the labial gingival margin and the form and height of the interproximal papillae with adjacent teeth.
拔牙后会出现软硬组织牙槽嵴畸形,给功能性和美观性牙齿修复带来挑战,尤其是在上颌前牙微笑区。本文讨论了一种使用旋转腭瓣进行牙槽嵴保存的手术技术,无论与传统固定义齿联合使用还是与种植治疗联合用于牙齿修复,都能极大地改善美观效果。该技术与种植治疗联合使用或为种植治疗做准备时,可保留牙槽骨的高度和宽度,从而增加种植体尺寸和植入位置的选择。此外,拔牙部位软组织的保存和增强,可使最终修复体周围的软组织轮廓与天然牙的软组织轮廓几乎没有差异。与传统固定义齿联合使用时,该技术可创建拔牙唇面和邻面龈沟的模板,用于塑造卵形桥体修复牙。这将极大地改善修复体的龈缘外形,唇侧牙龈边缘高度以及邻牙间乳头的形态和高度变化极小或没有变化。