Hulland S A, Lucas J O, Wake M A, Hesketh K D
Department of Dentistry, Royal Children's Hospital, Melbourne, Australia.
Pediatr Dent. 2000 Sep-Oct;22(5):415-21.
This study investigated the clinical process of the emergence phase of eruption of the primary dentition including length of time taken to erupt and the association between soft tissue changes and stages of eruption.
Twenty-one children aged 6-24 months at commencement of the study were recruited from three suburban daycare centers in Melbourne, Australia. Daily oral examinations of each child were conducted for seven months.
One hundred twenty-eight teeth were observed during eruption. Swelling very infrequently accompanied tooth eruption and in all cases was mild. Forty-nine percent of observed teeth demonstrated gingival redness during the emergence stages of eruption, but there was no significant relationship between redness and specific stages of eruption. Mean duration of eruption, from palpable enlargement of the gingival tissue to full eruption, was 2.0 months (range 0.9-4.6 months). The average rate of eruption was 0.7 mm per month. Many of the deciduous teeth appeared to demonstrate an "oscillating" pattern of eruption, (emerging and then retreating before emerging again). Timing of oscillation was not specific to stage of eruption or tooth type. This was defined as a "transitional" phase of eruption which appears to be common.
The results suggest that eruption of the primary dentition is often accompanied by redness, but not swelling, of the gingival tissues. For some children, there also appears to be a "transitional" eruption phase for primary teeth.
本研究调查了乳牙萌出期的临床过程，包括萌出所需时间以及软组织变化与萌出阶段之间的关联。
从澳大利亚墨尔本的三个郊区日托中心招募了21名研究开始时年龄在6至24个月的儿童。对每个儿童进行了为期七个月的每日口腔检查。
在萌出过程中观察到128颗牙齿。肿胀极少伴随牙齿萌出，且在所有情况下都很轻微。49%的观察到的牙齿在萌出的露出阶段出现牙龈发红，但发红与特定萌出阶段之间没有显著关系。从牙龈组织可触及肿大到完全萌出的平均萌出持续时间为2.0个月（范围为0.9至4.6个月）。平均萌出速度为每月0.7毫米。许多乳牙似乎表现出一种“振荡”式萌出模式（先萌出然后退回，之后再次萌出）。振荡时间并不特定于萌出阶段或牙齿类型。这被定义为一个似乎很常见的萌出“过渡”阶段。
结果表明乳牙萌出通常伴随着牙龈组织发红，但不伴有肿胀。对于一些儿童来说，乳牙似乎也存在一个“过渡”萌出阶段。
