Int J Periodontics Restorative Dent. 2021 Jan-Feb;41(1):43-49. doi: 10.11607/prd.5195.
There is a need to modify the definition of attached gingiva (AG) as it applies to healthy and diseased teeth and implants. There are two parts to this new definition: Part A is when the biologic width is supracrestal (epithelial attachment and gingival fibers) and is attached to a healthy tooth or tissue-level implant, and the zone of AG is measured from the base of the sulcus to the mucogingival junction (MGJ); Part B is when the biologic width is subcrestal-as with infrabony defects on periodontally involved teeth, periodontally involved tissue-level implants, and bone-level implants placed at or below the bone crest-and the zone of AG is measured from the bone crest (not the base of the sulcus) to the MGJ. Further, what the AG is actually attached to around teeth and different types of implants, and the clinical significance of these differences, are thoroughly discussed.
需要对附着龈 (AG) 的定义进行修改，以使其适用于健康和患病的牙齿和种植体。这个新定义有两个部分：A 部分是当生物学宽度位于龈上（上皮附着和牙龈纤维）并附着在健康的牙齿或组织水平种植体上时，AG 区从龈沟底部测量到龈黏膜交界（MGJ）；B 部分是当生物学宽度位于龈下时，例如牙周病受累牙齿、牙周病受累组织水平种植体和骨水平种植体在牙槽嵴顶以下放置时，AG 区从牙槽嵴顶（而不是龈沟底部）测量到 MGJ。此外，还深入讨论了围绕牙齿和不同类型种植体的 AG 实际附着情况，以及这些差异的临床意义。
