Nik Nik Noriah, Abul Rahman Rahmah
Department of Children's Dentistry and Orthodontics, Faculty of Dentistry University of Malaya, 50603 Kuala Lumpur, Malaysia.
J Clin Pediatr Dent. 2003 Summer;27(4):371-5. doi: 10.17796/jcpd.27.4.w26q821135440504.
This study was conducted to determine the prevalence of pre-eruptive intracoronal dentin defects from panoramic radiographs from a group of children and young adults aged 20 years and below. The radiolucent lesions were noted with regard to which teeth were affected, the location of the defects and the size of the defects relative to the width of dentin. Out of 1007 radiographs examined, 275 (27.3%) have pre-eruptive dentin defects. The prevalence of anomaly among males was 28.4% as compared to 26.2% among females. However, the difference between genders was not significant, thus subsequent results have been combined. Of 275 subjects with dentin radiolucencies, 243 subjects (88.7%) had only one affected tooth, 30 subjects (10.9%) had two teeth affected and 2 subjects (0.7%) had three affected teeth. The tooth prevalence of the anomaly was 2.1% and most of the lesions occurred as a single occurrence on the affected tooth. Within each tooth type, the highest tooth prevalence of intracoronal dentin defect was found in the upper first premolar (5.1%). More than half of the lesions extended less than 1/3 of the width of the dentin thickness. The high prevalence of the condition indicates the need for increased awareness and recognition of this during radiographic examination of teeth in the pediatric age group in early pre-eruptive stages so that early detection and diagnosis can be made and treatment can be done at the most appropriate time.
本研究旨在通过一组20岁及以下儿童和年轻人的全景X线片来确定牙冠内牙本质发育前缺陷的患病率。记录了透射性病变涉及的患牙、缺陷位置以及相对于牙本质宽度的缺陷大小。在检查的1007张X线片中，275张（27.3%）有牙冠内牙本质发育前缺陷。男性的异常患病率为28.4%，女性为26.2%。然而，性别之间的差异不显著，因此后续结果合并统计。在275名有牙本质透射性病变的受试者中，243名受试者（88.7%）只有一颗患牙，30名受试者（10.9%）有两颗患牙，2名受试者（0.7%）有三颗患牙。该异常的患牙率为2.1%，且大多数病变在患牙上为单发。在每种牙型中，牙冠内牙本质缺陷的最高患牙率出现在上颌第一前磨牙（5.1%）。超过一半的病变延伸范围小于牙本质厚度宽度的1/3。该疾病的高患病率表明，在儿童年龄组牙齿发育前早期的X线检查中，需要提高对此病的认识和识别，以便能够早期发现和诊断，并在最合适的时间进行治疗。
