Khare Nishant, Patil Surendra B, Kale Satish M, Sumeet Jaiswal, Sonali Ingole, Sumeet Bharadwaj
Department of Plastic Surgery, Government Medical College, Nagpur, Maharashtra India.
J Maxillofac Oral Surg. 2012 Sep;11(3):309-13. doi: 10.1007/s12663-012-0334-1. Epub 2012 Feb 19.
Mouth opening among different population has been shown to vary considerably and its range is specific for a given population. The present study is an attempt to calculate the normal mouth opening in adult Indian population.
A total of 894 adults, 463 males and 431 females, in the age range of 21 to 70 years were studied. The subjects were asked to open their mouth maximally till no further opening was possible. The distance from the incisal edge of the upper incisor teeth to the incisal edge of the lower incisor teeth was measured using a calibrated fiber ruler. To determine correlation of mouth opening with age a Pearson correlation analysis was performed and statistical significance was tested by the application of t test.
The mean maximal mouth opening for males was 51.3 mm (SD 8.3) (Range 39-70 mm). The mean maximal mouth opening for females was 44.3 mm (SD 6.7) (Range 36-56 mm). There was significant difference between the mouth opening of male and female in all the age groups with P value <0.05. A linear relationship was observed between the mouth opening and age in both males and females and the mouth opening decreased as the age increased.
The mean maximal mouth opening for Indian males is 51.3±8.3 mm and for females is 44.3±6.7 mm. The mouth opening seems to decrease with age. The mouth opening of females is significantly less than the males in all the age groups.
不同人群的张口度已被证明有很大差异，且其范围因特定人群而异。本研究旨在计算成年印度人群的正常张口度。
共研究了894名年龄在21至70岁之间的成年人，其中男性463名，女性431名。要求受试者尽可能张大嘴巴，直到无法再张大为止。使用校准的纤维尺测量上切牙切缘到下切牙切缘的距离。为了确定张口度与年龄的相关性，进行了Pearson相关分析，并应用t检验来检验统计学意义。
男性的平均最大张口度为51.3毫米（标准差8.3）（范围3
