Alamoudi N
Department of Preventive Dental Sciences, Faculty of Dentistry, KAAU, Jeddah, Saudi Arabia.
J Clin Pediatr Dent. 1999 Fall;24(1):53-8.
The aim of the present study is to evaluate the prevalence of crowding, attrition, midline discrepancies and premature loss of primary molars in primary dentition of children resident in Jeddah, Saudi Arabia. Five hundred and two (502) children aged 4-6 years old residing in the city of Jeddah, Saudi Arabia provide the data for the analysis. Crowding was found in 14.7% of the subjects crowding in the maxilla occurred in 27 (5.4%) of the children, and 67 (13.4%) in the mandible. Simultaneous crowding in maxilla and mandible was present in 20 (3.98%) of the subject. The prevalence of crowding was significantly higher in the mandible than the maxilla (P > 0.01) and higher in male (P < 0.05). Midline shift was present in 10% of the children with females showing a significantly higher prevalence than the males (P < 0.001). Attrition was present in 167 (33.3%) of the children. One hundred and sixty children (31.9%) had attrition in enamel, and only 7(1.4%) had attrition, which exposed the dentin. Thirty-one (6.2%) out of 502 children had 51 (0.5%) missing teeth out of total number of 10,040 teeth. Tooth #84 was most commonly lost tooth (P < .025). Overall premature loss of 1st primary molars was found to be significantly higher than 2nd primary molars (P < .001).
本研究的目的是评估沙特阿拉伯吉达市儿童乳牙列中牙列拥挤、磨耗、中线差异和乳磨牙早失的患病率。居住在沙特阿拉伯吉达市的502名4至6岁儿童提供了分析数据。14.7%的受试者存在牙列拥挤，上颌拥挤发生在27名（5.4%）儿童中，下颌拥挤发生在67名（13.4%）儿童中。20名（3.98%）受试者上颌和下颌同时出现拥挤。下颌牙列拥挤的患病率显著高于上颌（P>0.01），男性患病率更高（P<0.05）。10%的儿童存在中线偏移，女性患病率显著高于男性（P<0.001）。167名（33.3%）儿童存在磨耗。160名（31.9%）儿童牙釉质有磨耗，只有7名（1.4%）儿童磨耗暴露了牙本质。502名儿童中有31名（6.2%）在总共10040颗牙齿中有51颗（0.5%）牙齿缺失。第84号牙是最常缺失的牙齿（P<.025）。总体而言，第一乳磨牙的早失率显著高于第二乳磨牙（P<.001）。
