We explore the functional, developmental, and evolutionary processes which are argued to produce tooth reduction in the extinct marine reptile Stenopterygius quadriscissus (Reptilia: Ichthyosauria). We analyze the relationship between mandible growth and tooth size, shape, and count, to establish an ontogenetic trend. The pattern in S. quadriscissus is consistent with hypotheses of tooth size r...

more fully the inheritance of tooth size in British families. Though twin studies have established a high genetic component in tooth size (Lundstrom, 1948; Osborne, Horowitz, and De George, 1958), few family studies have been undertaken to elucidate the matter further. The studies of Hohl (1934) and Martin (1934) were among the first but used relatively small samples. They calculated both paren...

The aims of this study were to determine the tooth size discrepancies (TSD) in a representative sample of Jordanian schoolchildren and to compare TSD between genders. Dental casts of 367 (174 males and 193 females; mean age 15.5 years) Jordanian schoolchildren were selected. Anterior and overall Bolton ratios were determined using a digital calliper. Differences between genders were analyzed us...

BACKGROUND The aims of this study were to (1) investigate to what extent the generic and condition specific (CS) forms of the oral impact of daily performance (OIDP) inventory discriminate between a group of patients with hypodontia and a group of patients having malocclusion, (2) assess the association of the generic and CS OIDP with severity and localisation of hypodontia, whilst adjusting fo...

introduction : to achieve success in treatment, one cannot ignore the knowledge of pulp anatomy. mandibular premolars are considered to be the most difficult teeth for endodontic therapy due to high variability in their canal morphology. it is possible that a relation exists between the crown size and the number of extra canals in these teeth, so this in vitro study aims to investigate the rela...

Esthetic anterior dental appearance depends on the alignment, occlusion, and exposure of anterior teeth.1–3 In order to establish adequate alignment and occlusion, the upper and lower incisors need to be proportional in size. Interarch tooth size discrepancy (ITSD) is defined as a disproportion in the mesiodistal dimensions of teeth of opposing dental arches. In the absence of a proportional ma...

This study examined tooth size in a sample of thirty Northern Irish people with bimaxillary dental protrusion. The mesiodistal diameters of all permanent teeth (excluding second and third molars) were measured. The tooth sizes were compared with a control group who did not have bimaxillary dental protrusion. The results revealed that, on average, tooth size for the overall maxillary and mandibu...

BACKGROUND To evaluate mesiodistal tooth width of patients with UCLP comparing tooth size in different Goslon Yardstick scores and between cleft and noncleft sides. METHODS The Department of Orthodontics at Bauru Dental School and Hospital of Rehabilitation of Craniofacial Anomalies - University of Sao Paulo. Hundred forty-four pairs of dental casts of patients with UCLP. These dental casts w...