In postnatal dental development, and in crown size itself, there is a demonstrable "distance gradient" so that teeth closer together within a jaw quadrant show higher correlations. Thus, adjacent teeth exhibit systematically higher commonality in both tooth formation and crown size than more remote teeth in the same quadrant, despite absolute differences in formation (calcification, root elonga...

Front tooth extraction typically results in significant loss of hard and soft tissue volume, both in the vestibular-lingual and mesiodistal directions. As these changes can compromise the esthetic results of prosthetic rehabilitation, extraction techniques that cause minimal trauma to the remnant tissues are applied in combination with immediate implant placement to minimize such alterations. T...

AIM To evaluate the Bolton ratios in Brazilians with natural, normal occlusions. METHODS Thirty-five dental casts of Brazilian Caucasians with a natural, normal occlusion from the files of the Postgraduate Program in Orthodontics of the Methodist University of São Paulo were scanned in three dimensions. On the scanned images, the greatest mesiodistal distance of each tooth from right first mo...

Since crown size reduction has been observed in 47-trisomy G (M. M. COHEN and R. A. WINER, J Dent Res 44:197-208, 1965; M. M. COHEN, S. M. GARN, and M. A. GECIAUSKAS, J Dent Res 49:460, 1970) with delayed tooth formation timing (S. M. GARN, C. W. STIMSON, and A. B. LEWIS, J Dent Res 49:640, 1970), it is useful to compare the magnitude of crown size reduction with the magnitude of body size redu...

BACKGROUND AND AIMS The correct relationship of the total mesiodistal width of the mandibular teeth to that of the maxillary teeth (Bolton's ratios) is among the main factors considered in obtaining an optimal occlusion. The present study was conducted to determining the Bolton's ratios before and after treatment in skeletal class I patients. MATERIALS AND METHODS In this descriptive analytic...

background & aim: the artificial teeth are produced with same standards for all the ethnics and countries in the world. the purpose of this study was to establish a normative size distribution in a group of students and staffs of shahid beheshti university of medical sciences. methods & materials: 320 individuals participated in this descriptive study. a vernier caliper was used to measure the ...