Debnath Nitai, Gupta Renu, Meenakshi A, Kumar Sandeep, Hota Sadananda, Rawat Pratibha
Assisstant Professor, Department of Prosthetic Dentistry, Dental College , RIMS, Imphal, India .
Assisstant Professor, Department of Periodontics, Nair Hospital and Dental College , Mumbai, India .
J Clin Diagn Res. 2014 Dec;8(12):ZC39-43. doi: 10.7860/JCDR/2014/10194.5289. Epub 2014 Dec 5.
To find out the anthropometric relationship of Inter-condylar distance to Inter-canine and Inter-molar distance of maxillary arch and occlusal vertical dimension in dentate individuals of South Indian population.
A total number of 120 dentate individuals were randomly equally divided into Group A and Group B. According to the face form, each Group was again subdivided into four subgroups. Subgroup A1 and B1 contained Square face form, Subgroup A2 and B2 Tapered, Subgroup A3 and B3 Square tapered and Subgroup A4 and B4 Ovoid face form. The ratio of ICD to U3, U6 and OVD of Group A individuals were applied to the Group B individuals with similar face forms and the clinical significance of the ratios were evaluated.
No significant difference (p-value=0.841) was observed in the ratio of U6 to ICD (U6/ICD) in all the face forms. A significant difference (p-value = 0.010) in the mean value was observed when the ratio of OVD to ICD (OVD/ICD) was compared between the squared tapered face form of Group A (0.60 ± 0.01) and Group B (0.06±0.03). A significant difference (p value = 0.007) was observed between the measured (62.47 ±2.77) and calculated (64.99±2.61) values of OVD in square taper face form.
In south Indian population, ICD can be used as a reliable guide line to determine the bucco-palatal position of maxillary first molar irrespective of the face forms.
探究南印度人群中牙列完整个体的髁间距离与上颌牙弓尖牙间、磨牙间距离以及咬合垂直距离之间的人体测量学关系。
总共120名牙列完整个体被随机均分为A组和B组。根据面部形态，每组又被细分为四个亚组。A1组和B1组为方形脸，A2组和B2组为锥形脸，A3组和B3组为方锥形脸，A4组和B4组为卵形脸。将A组个体的髁间距离与上颌尖牙、第一磨牙距离及咬合垂直距离的比值应用于面部形态相似的B组个体，并评估这些比值的临床意义。
在所有面部形态中，上颌第一磨牙与髁间距离的比值（U6/ICD）未观察到显著差异（p值 = 0.841）。比较A组方锥形脸（0.60±0.01）和B组（0.06±0.03）的咬合垂直距离与髁间距离的比值（OVD/ICD）时，均值存在显著差异（p值 = 0.010）。方锥形脸的咬合垂直距离测量值（62.47±2.77）与计算值（64.99±2.61）之间存在显著差异（p值 = 0.007）。
在南印度人群中，无论面部形态如何，髁间距离均可作为确定上颌第一磨牙颊腭向位置的可靠指导指标。
