Kannapan J G, Swaminathan S
Kannappan's Orthodontic Centre, Chennai, India.
Indian J Dent Res. 2001 Jul-Sep;12(3):145-9.
Tubercle of Carabelli is a dental morphologic trait found on the mesiopalatal surface of maxillary deciduous second molar and maxillary permanent first molar crowns. Tooth with Tubercle of Carabelli is susceptible to dental caries. Tubercle of Carabelli also interferes with banding techniques during fixed orthodontic therapy. The aim of this study is to determine the distribution of this dental morphologic variation with its forms of expressivity in the maxillary deciduous second molars and maxillary permanent first molars and also to determine the dichotomous nature of this trait. Study models of 648 subjects were evaluated for the presence of the trait and its expression. 67.5% of maxillary deciduous second molars and 52.77% of maxillary permanent first molars displayed the trait. There is predominance among females in the prevalence in the maxillary deciduous second molars. Mild and moderate forms expressed in maxillary deciduous second molars is mostly the same as that of maxillary permanent first molars.
卡氏结节是一种牙形态特征，见于上颌乳第二磨牙和上颌第一恒磨牙牙冠的近中腭面。有卡氏结节的牙齿易患龋齿。卡氏结节在固定正畸治疗期间也会干扰带环技术。本研究的目的是确定这种牙形态变异在其表达形式上在上颌乳第二磨牙和上颌第一恒磨牙中的分布情况，并确定该特征的二分性质。对648名受试者的研究模型进行了该特征的存在及其表达情况的评估。67.5%的上颌乳第二磨牙和52.77%的上颌第一恒磨牙表现出该特征。上颌乳第二磨牙患病率在女性中占优势。上颌乳第二磨牙中轻度和中度表达形式与上颌第一恒磨牙基本相同。
