Relationship between dental size and normal occlusion in Brazilian patients

Abstract

The present study was performed on dental casts and lateral cephalometric films of 30 Caucasian Brazilian individuals (15 males and 15 females) aged 18 to 27 years and 4 months, all presenting normal occlusion and satisfactory facial profile. The aims were to investigate the existence of dental discrepancies according to Bolton's criteria, to obtain mean values for overbite, overjet, curve of Spee and interincisal angle, and to demonstrate any correlation among these parameters. A single calibrated operator measured each variable characteristics and the process was recorded twice with an accurate modified digital caliper. It was observed that the sample of normal occlusion did not present any dental discrepancy among the 12 teeth of opposite arches. The overall ratio (91.46) and anterior ratio (77.83) were in accordance with those proposed by Bolton. The mean values for normal occlusion in this Brazilian sample were defined as: 2.45 mm for overbite; 1.92 mm for overjet; 1.01 mm for curve of Spee and 129.57 degrees for interincisal angle. A statistically significant correlation was found between overjet and overbite.

Numerical analysis of the biomechanical behaviour of a weakened root after adhesive reconstruction and post-core rehabilitation

“…A 100-N load was applied on the palatal surface at an angle of 1308 from the long axis of the tooth. 31 To simulate an occlusal contact area, the load was distributed over four nodes located 3.2 mm 31 from the incisal edge (Fig. 3).…”

Influência da hipermobilidade articular generalizada sobre a articulação temporomandibular e a oclusão dentária: estudo transversal

“…Overjet was measured horizontally from the lower incisor to its antagonist, and it was considered when this value was greater than two millimeters. Crossbite was classified as absent or present (18,(22)(23)(24) . To characterize the pattern of disocclusion and occlusal interferences, participants were requested to perform mandibular protrusion and lateral excursions, and the contact spots were marked (19) .…”

Bolton s intermaxillary tooth size ratios among Iranian schoolchildren

“…Different racial groups must be treated according to their own characteristics (12). Most research on TSD investigated the effect of sexual dimorphism.…”