Abstract
Background
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.
Method
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.
Observations
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.
Conclusion
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.
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References
Wood GD, Branco A (1979) A comparison of three methods of measuring maximal opening of the mouth. J Oral Surg 37:175
Gallagher C, Gallagher V, Whelton H, Cronin M (2003) The normal range of mouth opening in an Irish population. J Oral Rehabil 30:1–7
Boozer CH, Ferraro EF, Weinberg R (1984) The effects of age, race and sex on the interincisal measurement. Ann Dent 43:5
Mezitis M, Rallis G, Zachariades N (1989) The normal range of mouth opening. J Oral Maxillofac Surg 47:1028
Agerberg G (1974) Maximal mandibular movements in young men and women. Sven Tandlak Tidskr 67:81
Landtwing K (1978) Evaluation of the normal range of vertical mandibular opening in children and adolescents with special reference to age and stature. J Maxillofac Surg 6:157
Cox SC, Walker DM (1997) Establishing a normal range for mouth opening: its use in screening for submucous fibrosis. Br J Oral Maxillofac Surg 35:40
Dijkstra PU, de Bont LGM, Stegnenga B, Boering G (1995) Angle of mouth opening measurement: reliability of a technique for temporomandibular joint mobility assessment. J Oral Rehabil 22:263
Physiology U (1969) Physiology of occlusion and rehabilitation, 2nd edn. FA Davis Co., Philadelphia, p 41
Wood GD, Branco JA (1997) A comparison of three methods of measuring maximal opening of the mouth. J Oral Surg 37:175
Pullinger AG, Liu SP, Low G, Tay D (1987) Differences between sexes in maximum jaw opening when corrected to body size. J Oral Rehabil 14:291
Beighton P, Graham R, Bird HA (1989) Hypermobility of joints, 2nd edn. Springer, Berlin, p 21
Eurostat (2000) Eurostat yearbook: 2000—a statistical eye on Europe 1988–1998. European Commision, Brussels, p 246
Ohno Y, Hirai K, Sato N, Ito M, Yamamoto T, Tamura T, Shrestha MP (1997) Food consumption patterns and nutrient intake among Nepalese living in the southern rural Terai region. Asia Pacific J Clin Nutr 6:251
http://en.wikipedia.org/wiki/Human_height. Retrieved on 19 Aug 2010 at 12:30 IST
Puri VA, Rana RE, Agarwal KA, Suryavanshi SR, Aiyer PM (2001) Measurement of interincisal distance in the Indian population. Ann Plast Surg 46:662–663
Weaver N, Glover K, Major P, Varnhagen C, Grace M (1998) Age limitation on provision of orthopedic therapy and orthognathic surgery. Am J Orthod Dentofacial Orthop 113:156–164
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Khare, N., Patil, S.B., Kale, S.M. et al. Normal Mouth Opening in an Adult Indian Population. J. Maxillofac. Oral Surg. 11, 309–313 (2012). https://doi.org/10.1007/s12663-012-0334-1
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DOI: https://doi.org/10.1007/s12663-012-0334-1