Chang Li-Ching
Department of Dentistry, Chang-Gung Memorial Hospital, Chia-Yi Branch, Chang-Gung University, Taiwan, Republic of China.
J Clin Periodontol. 2007 May;34(5):432-6. doi: 10.1111/j.1600-051X.2007.01072.x.
To discover the association between embrasure morphology and central papilla recession.
The central papilla was visually assessed in 330 adults using standardized periapical radiographs of the maxillary central incisors. The following vertical distances were measured: papilla recession [i.e., the distance from the papilla tip (PT) to the contact point (CP)], bone crest (BC) to contact point (BC-CP), proximal cementoenamel junction (pCEJ) to contact point (pCEJ-CP), and papilla height (PH). The horizontal distance measured was the inter-dental width. Subjects were divided into four groups according to inter-dental width and pCEJ-CP distance, respectively: narrow-long, narrow-short, wide-long, and wide-short.
A statistically positive relationship was evident between central papilla recession and age, and a statistically negative relationship was evident between age and PH in all study groups.
Central papilla recession as a result of ageing is most frequently associated with a wide inter-dental width and long pCEJ-CP distance. However, other factors affect the likelihood of the presence of the inter-dental papilla, and further study of the interaction among these factors is warranted.
探究牙间隙形态与中央乳头退缩之间的关联。
使用上颌中切牙的标准化根尖片对330名成年人的中央乳头进行视觉评估。测量以下垂直距离：乳头退缩（即从乳头尖端[PT]到接触点[CP]的距离）、牙槽嵴顶[BC]到接触点[BC-CP]、近中牙骨质牙釉质界[pCEJ]到接触点[pCEJ-CP]以及乳头高度[PH]。测量的水平距离为牙间隙宽度。根据牙间隙宽度和pCEJ-CP距离，将受试者分别分为四组：窄长型、窄短型、宽长型和宽短型。
在所有研究组中，中央乳头退缩与年龄之间存在统计学上的正相关关系，年龄与PH之间存在统计学上的负相关关系。
因衰老导致的中央乳头退缩最常与宽牙间隙宽度和长pCEJ-CP距离相关。然而，其他因素会影响牙间隙乳头存在的可能性，有必要进一步研究这些因素之间的相互作用。
