Patil Santosh, Doni Bharati, Kaswan Sumita, Rahman Farzan
Dept of Oral medicine and radiology, Jodhpur Dental College, Jodhpur National University, Jodhpur (Raj), India.
Dept of Oral medicine and radiology, NIMS, Jaipur (Raj), India.
J Clin Exp Dent. 2013 Oct 1;5(4):e179-82. doi: 10.4317/jced.51118.
Taurodontism affects primarily molars and premolars in both the deciduous and permanent dentition. The aim of the study was to assess the prevalence of taurodontism in the North Indian population.
4143 patients were studied by analyzing the panoramic radiographs for the presence of taurodontism which is defined as the presence of an apically displaced pulp chamber and the tooth lacks the usual constriction at the cementoenamel junction. The age of the patients ranged from 13 to 38 years with a mean age of 21.8 years.
Taurodontism was found in 17 patients with a prevalence of 0.4% of which 0.21% were males and 0.19% females. Taurodonts were significantly more common in the maxilla (65.6%) than in the mandible (34.4%) (p<0.05) and the maxillary second molar (34.4%) was the most commonly involved tooth. According to the morphology hypotaurodonts were most common (75%) but there was no significant difference in males and females (p>0.05).
Taurodontism is relatively uncommon in the North Indian population. Further large scale studies need to be carried out to assess its prevalence in the general population. A family history of other anomalies should also be considered for affected patients. Key words:Taurodontism, prevalence, maxillary second molar.
牛牙样变主要影响乳牙列和恒牙列中的磨牙和前磨牙。本研究的目的是评估北印度人群中牛牙样变的患病率。
对4143例患者进行研究，通过分析全景X线片来确定牛牙样变的存在，牛牙样变定义为牙髓腔向根尖移位且牙齿在牙骨质牙釉质界处缺乏正常的缩窄。患者年龄范围为13至38岁，平均年龄为21.8岁。
在17例患者中发现牛牙样变，患病率为0.4%，其中男性患病率为0.21%，女性患病率为0.19%。牛牙样变在上颌（65.6%）比下颌（34.4%）更常见（p<0.05），上颌第二磨牙（34.4%）是最常受累的牙齿。根据形态学，低位牛牙样变最常见（75%），但男性和女性之间无显著差异（p>0.05）。
牛牙样变在北印度人群中相对不常见。需要进一步开展大规模研究以评估其在普通人群中的患病率。对于受影响的患者，还应考虑其他异常的家族史。关键词：牛牙样变、患病率、上颌第二磨牙
