Maharjan Anjana, Joshi Sarita
National Academy of Medical Sciences, Bir Hospital, Kathmandu, Nepal.
J Nepal Health Res Counc. 2018 Mar 13;16(1):11-15.
Golden proportion, recurrent esthetic dental proportion and golden percentage are the widely accepted tools to measure perceived mesiodistal width of maxillary anterior teeth. Our study was aimed to identify appropriate tool among the above mentioned proportion to measure perceived mesiodistal width.
A cross-sectional observational study was conducted in National Academy of Medical Sciences, Bir Hospital, Nepalese Army Institute of Medical Sciences and Patan Academy of Health Sciences between March 2014 to March 2015.Sixty-three respondents were recruited in the study by the convenient sampling technique. Photographs of the maxillary anterior teeth were taken using digital single reflex camera with macrolens. Data analysis was done using SPSS version 17.0 and paired sample t- test was performed.
In our study the golden proportion was 14.28% between central and lateral incisor and 12.69% between canine and lateral incisor. Therefore, golden proportion in our scenario doesn't exist. Recurrent esthetic dental proportion in female Aryans was 71 and 71 on left side and 71and 75 on right side. Golden percentage of respondents was near to values 11, 15, 22, 22, 15, and 12 %.
Golden percentage is an appropriate anterior tooth proportion which may serve as a guideline for the restoration of anterior tooth. RED proportion is applicable only in Mongoloid female population.
黄金比例、反复出现的美学牙齿比例和黄金百分比是用于测量上颌前牙近远中宽度的广泛认可的工具。我们的研究旨在从上述比例中确定测量上颌前牙近远中宽度的合适工具。
2014年3月至2015年3月期间,在尼泊尔医学科学院、比尔医院、尼泊尔军队医学研究所和帕坦健康科学学院进行了一项横断面观察性研究。采用便利抽样技术招募了63名研究对象。使用带微距镜头的数码单反相机拍摄上颌前牙的照片。使用SPSS 17.0版本进行数据分析,并进行配对样本t检验。
在我们的研究中,中切牙与侧切牙之间的黄金比例为14.28%,尖牙与侧切牙之间的黄金比例为12.69%。因此,在我们的研究中不存在黄金比例。雅利安女性反复出现的美学牙齿比例在左侧为71和71,在右侧为71和75。研究对象的黄金百分比接近11%、15%、22%、22%、15%和12%。
黄金百分比是一种合适的前牙比例,可作为前牙修复的指导原则。反复出现的美学牙齿比例仅适用于蒙古人种女性群体。