Segura Juan José, Poyato Manuel
Department of Comprehensive Dentistry, University of Seville, Spain.
J Dent Child (Chic). 2003 Jan-Apr;70(1):55-7.
The purpose of this study was to determine the prevalence of tooth crown fractures affecting primary incisors of 3-year-old Andalusian children.
Clinicians examined 337 three-year-old children (mean age=3.6 years) of Seville, Andalusia, southern Spain. They examined the children for several dental and oral conditions, including tooth trauma.
Crown fractures were found in 15% of the examined children. The prevalence of tooth crown fractures was significantly higher in males (18%) than in females (10%) (P=.04; odds ratio:0.5). In both genders, the upper central incisors had the most fractures, 77% in males and 71% in females. The most common crown fracture was found in enamel only (82%), followed by fracture into dentin (12%), and fracture involving the dental pulp (7%).
Dentists have a responsibility to examine primary tooth injuries at the initial presentation of children because a dental injury to a primary tooth may include more severe injuries, such as dento-alveolar fractures.
本研究旨在确定影响3岁安达卢西亚儿童乳切牙牙冠骨折的患病率。
临床医生对西班牙南部安达卢西亚塞维利亚的337名3岁儿童（平均年龄 = 3.6岁）进行了检查。他们对儿童进行了多项牙齿和口腔状况检查，包括牙齿外伤。
在接受检查的儿童中，15%发现有牙冠骨折。男性牙冠骨折的患病率（18%）显著高于女性（10%）（P = 0.04；比值比：0.5）。在男女两性中，上颌中切牙骨折最多，男性为77%，女性为71%。最常见的牙冠骨折仅发生在牙釉质（82%），其次是牙本质骨折（12%），以及涉及牙髓的骨折（7%）。
牙医有责任在儿童初次就诊时检查乳牙损伤情况，因为乳牙损伤可能包括更严重的损伤，如牙槽突骨折。
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