Increased Mesiodistal widths of teeth are one of the main reasons for crowding and malocclusion in adults. This is mainly due to the tooth size-arch size discrepancy. However, there is very little knowledge whether the Mesiodistal width of the incisors has any relation with the arch size of the patient.
This study was conducted to verify whether a correlation exists between the arch width of maxillary arch and the Mesiodistal width of the upper central incisors.
31 maxillary casts were used in this study. Mesiodistal widths of the central incisors were measured and arch width in the premolar and the molar regions were measured. Measurements were made from the tip of the buccal cusp of the premolars and from the tip of the Mesiobuccal cusp of the molars. The values obtained were analyzed using the SPSS for Windows, version 14.0software. The results showed a non-significant correlation between the central incisor widths and both the arch width in the premolar and molar region. It was concluded that the Mesiodistal width of central incisor is not correlated with the width of the arch in the premolar and molar region.
