D'Aoust P, Landry R, Ganske R, Carrier J
Laval University, School of Dental Medicine at Sainte-Foy, Québec.
Ont Dent. 1991 Oct;68(8):39, 43, 45 passim.
The retrocuspid papilla (RCP) is a soft well circumscribed nodule located lingually to the mandibular cuspid on the gingival tissue surface. The RCP is observed more frequently in young children and regresses or disappears with age. Little information is available in the literature on this structure. The prevalence of the RCP is discussed as it relates to its distribution among three groups of Latin American patients: those of southern Ecuador, northeastern Honduras and eastern Nicaragua. The distribution by age, sex, symmetry and gingival position is evaluated. Based on the analysis of the results, it was determined that: the RCP is most prevalent in under-five age group at a relative frequency of 25 per cent; its prevalence decreases progressively with age; it is present significantly more often among females in the Honduras group; a unilateral distribution is more frequent than a bilateral distribution, except for the Nicaragua group, where a bilateral distribution prevails; and it is most frequently located on the attached gingiva as compared to free gingiva and mucosa. The clinical significance of the RCP resides in the fact that it may simulate pathological gingival conditions from which it must be differentiated.
下颌尖牙后乳头（RCP）是位于下颌尖牙舌侧牙龈组织表面的一个边界清晰的柔软小结节。RCP在幼儿中更常见，并会随着年龄增长而消退或消失。关于这个结构，文献中提供的信息很少。本文讨论了RCP在三组拉丁美洲患者中的分布情况：厄瓜多尔南部、洪都拉斯东北部和尼加拉瓜东部的患者。评估了其按年龄、性别、对称性和牙龈位置的分布情况。基于对结果的分析，确定：RCP在五岁以下年龄组中最为普遍，相对频率为25%；其患病率随年龄逐渐降低；在洪都拉斯组中，女性中RCP的出现频率明显更高；除尼加拉瓜组以双侧分布为主外，单侧分布比双侧分布更常见；与游离龈和黏膜相比，RCP最常位于附着龈上。RCP的临床意义在于它可能模拟必须与之鉴别的病理性牙龈状况。
