Srivastava B, Chandra S, Jaiswal J N, Saimbi C S, Srivastava D
J Clin Pediatr Dent. 1990 Fall;15(1):17-24.
The dimensional differences of the attached gingiva and gingival sulcus in the primary, mixed and permanent dentition were studied clinically in normal gingivae of 382 children, aged 4-15 years. The depth of the gingival sulcus and the width of keratinized gingiva were also measured. Shallow gingival sulcus was observed in the primary dentition as compared to that in permanent dentition. However, in the mixed dentition deeper sulcus was observed around the newly erupted teeth. This was attributed to deeper penetration of the instrument, at the time of eruption. The widest zone of attached gingiva was observed in maxillary and mandibular incisors, decreasing gradually over the cuspids and first premolars (first primary molars), and again attached gingiva increased in second premolars (second primary molars) and first and second permanent molars. The width of attached gingiva in case of newly erupted permanent teeth (mixed dentition) was narrower in the corresponding primary teeth. This was due to an increase in the gingival sulcus depth. The attached gingiva increased in width with age. This was related to a concomitant reduction in sulcus depth.
对382名4至15岁儿童的正常牙龈进行了临床研究，以探讨乳牙列、混合牙列和恒牙列中附着龈和龈沟的尺寸差异。同时测量了龈沟深度和角化龈宽度。与恒牙列相比，乳牙列的龈沟较浅。然而，在混合牙列中，新萌出牙齿周围的龈沟更深。这归因于牙齿萌出时器械插入更深。在上颌和下颌切牙中观察到附着龈最宽的区域，在尖牙和第一前磨牙（第一乳磨牙）处逐渐变窄，而在第二前磨牙（第二乳磨牙）以及第一和第二恒磨牙处附着龈又有所增加。新萌出恒牙（混合牙列）对应的乳牙列中附着龈的宽度较窄。这是由于龈沟深度增加所致。附着龈的宽度随年龄增长而增加。这与龈沟深度的相应减小有关。
