Comparison of mesiodistal tooth widths in Caucasian, African and Japanese individuals with Brazilian ancestry and normal occlusion.

OBJECTIVE To observe the presence of sexual dimorphism and compare the mesiodistal width of the teeth in Caucasian, African and Japanese individuals with Brazilian ancestry not orthodontically treated and with normal occlusion. METHODS One hundred pairs of dental casts were used. It was measured, from first molar to first molar in both arches, the teeth's mesiodistal widths, using a digital caliper. For the statistical analysis of results Kolmogorov-Smirnov, t test, ANOVA and Tukey's test (p < 0.05) were used. RESULTS Sexual dimorphism occurred on the three evaluated groups, and the highest mesiodistal widths were found in males. There was statistically significant difference between racial groups in all evaluated teeth in males. However, in females, this same difference was found only on upper lateral incisor and first molar; and lower lateral incisor, canine, first premolar and first molar. CONCLUSIONS Most of mesiodistal measures present particular characteristics in relation to gender, with higher values for males, and to race, with a tendency for African to present greater mesiodistal distance of the teeth, followed by Japanese and Caucasians, respectively, important for the correct diagnosis and orthodontic planning.

[1]  M. H. Vasconcelos,et al.  Determinação das medidas dentárias mésio-distais em indivíduos brasileiros leucodermas com oclusão normal , 2005 .

[2]  R. Reed,et al.  Biometrics of crowding and spacing of the teeth in the mandible. , 1954, American journal of physical anthropology.

[3]  E. F. Harris,et al.  Maxillary arch size and shape in American blacks and whites. , 2009, The Angle orthodontist.

[4]  S. K. Malhotra,et al.  Mesiodistal crown dimension of the permanent dentition of American Negroes. , 1975, American journal of orthodontics.

[5]  M. Signoli,et al.  Sexual dimorphism in teeth: discriminatory effectiveness of permanent lower canine size observed in a XVIIIth century osteological series. , 2002, Forensic science international.

[6]  M M Kuftinec,et al.  A biometric study of tooth size and dental crowding. , 1981, American journal of orthodontics.

[7]  C L Lavelle,et al.  Maxillary and mandibular tooth size in different racial groups and in different occlusal categories. , 1972, American journal of orthodontics.

[8]  S. Al-Khateeb,et al.  Mesiodistal crown diameters of permanent teeth in Jordanians. , 1996, Archives of oral biology.

[9]  Jiuxiang Lin,et al.  Comparison of intermaxillary tooth size discrepancies among different malocclusion groups. , 1999, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[10]  T J Cangialosi,et al.  Mesiodistal crown dimensions and tooth size discrepancy of the permanent dentition of Dominican Americans. , 2009, The Angle orthodontist.

[11]  S. P. Singh,et al.  Mesiodistal crown dimensions of the permanent dentition in North Indian children. , 2006, Journal of the Indian Society of Pedodontics and Preventive Dentistry.

[12]  L. Naidoo,et al.  An evaluation of the mean cephalometric values for orthognathic surgery for black South African adults. Part 1: Hard tissue. , 1997, The Journal of the Dental Association of South Africa = Die Tydskrif van die Tandheelkundige Vereniging van Suid-Afrika.

[13]  S E Bishara,et al.  Mesiodistal crown dimensions in Mexico and the United States. , 2009, The Angle orthodontist.

[14]  G. Engel,et al.  The mandibular dental arch, part IV: Prediction and prevention of lower anterior relapse. , 1979, The Angle orthodontist.

[15]  Naidoo Lc,et al.  An evaluation of the mean cephalometric values for orthognathic surgery for black South African adults. Part II: Soft tissue. , 1997 .

[16]  S E Bishara,et al.  Comparisons of mesiodistal and buccolingual crown dimensions of the permanent teeth in three populations from Egypt, Mexico, and the United States. , 1989, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[17]  D. Macko,et al.  Mesiodistal crown dimensions of permanent teeth of black Americans. , 1979, ASDC journal of dentistry for children.

[18]  U. Hägg,et al.  Tooth-size discrepancies among different occlusion groups of southern Chinese children. , 2001, American Journal of Orthodontics and Dentofacial Orthopedics.

[19]  J. E. Freeman,et al.  Frequency of Bolton tooth-size discrepancies among orthodontic patients. , 1996, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[20]  Silvia Sbeghen Sábio,et al.  Integraçäo ortodontia dentística no tratamento da agenesia bilateral dos incisivos laterais superiores: relato de um caso clínico , 1997 .

[21]  P. Buschang,et al.  Interarch tooth size relationships of 3 populations: "does Bolton's analysis apply?". , 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.

[22]  W. Stuart Hunter,et al.  Errors and Discrepancies in Measurement of Tooth Size , 1960, Journal of dental research.

[23]  W. C. Shellhart,et al.  Reliability of the Bolton tooth-size analysis when applied to crowded dentitions. , 2009, The Angle orthodontist.

[24]  Wayne A. Bolton,et al.  The clinical application of a tooth-size analysis , 1962 .

[25]  R. G. Alexander,et al.  Bilateral congenital absence of maxillary lateral incisors: a craniofacial and dental cast analysis. , 1985, American journal of orthodontics.

[26]  G. Janson,et al.  Facial height comparison in young white and black Brazilian subjects with normal occlusion. , 2007, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.

[27]  B. S. Savara,et al.  Relation of sex and occlusion to mesiodistal tooth size. , 1974, American journal of orthodontics.

[28]  W. Bacon,et al.  A comparison of cephalometric norms for the African Bantu and a caucasoid population. , 1983, European journal of orthodontics.

[29]  R. M. Little,et al.  Dentofacial maturation of untreated normals. , 1985, American journal of orthodontics.

[30]  W. Wiltshire,et al.  Manual and computer-aided space analysis: a comparative study. , 1997, American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics.