Singh Ronauk, Tripathi Arvind, Singh Saumyendra, Bhatnagar Atul
Saraswati Dental College Hospital & Research Centre, Lucknow, UP, India.
Eur J Prosthodont Restor Dent. 2011 Jun;19(2):85-9.
Maxillary central incisors are of critical value in the aesthetics of a smile. The Golden Rectangle ratio concept may play an important role in selecting the optimum width and length of this tooth. The aim of the study was to investigate the existence of this ratio among individuals with natural dentition and to validate its role in aesthetic oral rehabilitation. The clinical crown length of the maxillary left central incisor (CI) and combined crown width of the maxillary left and right CI of 70 subjects were measured. The crown width to crown length ratio was calculated and compared with the Golden Rectangle ratio and statistically analysed. Eighty percent of the subjects varied within 2 standard deviations of the ratio of 1.618. No statistically significant influence of gender on the ratio was observed. Golden rectangle was found to have a significant relationship with aesthetic appearance of maxillary central incisors.
上颌中切牙对微笑美学具有至关重要的价值。黄金矩形比例概念在选择该牙齿的最佳宽度和长度方面可能发挥重要作用。本研究的目的是调查天然牙列个体中该比例的存在情况，并验证其在口腔美学修复中的作用。测量了70名受试者上颌左中切牙的临床冠长以及上颌左右中切牙的联合冠宽。计算冠宽与冠长的比例，并与黄金矩形比例进行比较，然后进行统计分析。80%的受试者在1.618这一比例的2个标准差范围内变化。未观察到性别对该比例有统计学上的显著影响。发现黄金矩形与上颌中切牙的美学外观有显著关系。
