Do Bolton's ratios apply to a Spanish population?

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Vanessa ParedesRosa Cibrian

Abstract

Previous studies have shown that populations differ with respect to interarch tooth-size relationships, and differences in tooth sizes are not systematic. The aims of this study were to determine the Bolton ratios in Spanish subjects. We used a digital method and measured the casts to the nearest 0.05 mm. The sample consisted of 100 pairs of dental casts of Spanish subjects. The Kolmogorov-Smirnov test, t test, and 95% confidence intervals were used. Anterior tooth-width ratios were 78.31% +/- 2.59% for women and 78.34% +/- 2.16% for men (P = .955). Total tooth-width ratios were 91.91% +/- 2.04% for women and 92.10% +/- 1.73% for men (P = .668). No significant differences were found in tooth-width ratios according to sex, so the sexes were pooled and new ratios calculated: 78.32% +/- 2.45%, CI 95% (77.83%-78.81%), for the anterior tooth-width ratio and 91.97% +/- 1.95%, CI 95% (91.58%-92.35%), for the total tooth-width ratio. Twenty-one percent of the subjects had a significant anterior discrepancy (greater than 2 SD from Bolton's), and 5% had a total discrepancy. Differences between Spanish values and Bolton's were significant, and specific standards for Spanish people might be needed.

References

Feb 15, 2000·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·S S SmithE Watanabe
Apr 12, 2005·American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics·Vanessa ParedesRosa Cibrian

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Citations

Jul 31, 2007·Odontology·Toshiya EndoShohachi Shimooka
Jul 8, 2008·European Journal of Orthodontics·Iyad K Al-OmariAhmed M Hamdan
Apr 3, 2009·European Journal of Orthodontics·Mihovil StrujićMladen Slaj
Sep 5, 2009·European Journal of Orthodontics·Hüsamettin Oktay, Esengül Ulukaya
Dec 19, 2009·European Journal of Orthodontics·Barbara Wedrychowska-SzulcPiotr Stepień
Oct 13, 2010·The Angle Orthodontist·Gerard O'MahonyMichael S Cronin
Apr 21, 2016·European Journal of Dentistry·Fazal ShahidMohd Fadhli Khamis
May 4, 2011·Brazilian Oral Research·Somchai Manopatanakul, Narumon Watanawirun
May 10, 2019·The Laryngoscope·Arjun K ParasherNithin D Adappa

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