As shown in composite reconstructions made from optically-projected measurements of 10mu frontal maxillofacial sections of 20 histologically normal fetuses and embryos in the 70-255 mm CRL range, individual differences in relative tooth size and interdental spacing are evident by 10.5-11 weeks of gestation, and age-corrected crown-size correlations (r=0.40) approximate those in postnatal life. ...

AGENESIS OF MAXILLARY LATERAL INCISORS IN ORTHODONTIC PATIENTS AND THE RELATION TO OVERALL TOOTH SIZE Jane Wright, DDS Marquette University, May 2011 The maxillary lateral incisor is the second most frequently missing tooth in the dental arch with clinical management requiring a complex and multidisciplinary treatment approach. It has been suspected that teeth could be smaller in the maxillary ...

Brain volume and cheek-tooth size have traditionally been considered as two traits that show opposite evolutionary trends during the evolution of Homo. As a result, differences in encephalization and molarization among hominins tend to be interpreted in paleobiological grounds, because both traits were presumably linked to the dietary quality of extinct species. Here we show that there is an es...

Bite damage patterns have long been used to estimate shark species and body size, with somewhat limited success. The lack of Wt between damage patterns and shark size is partially due to variation in tooth size and shape within an individual. The ability to accurately predict body size from bite patterns is important for better understanding the ecological and behavioral underpinnings of shark ...

Foreign objects in a tooth are often diagnosed accidentally. A detailed case history, clinical and radiographic examinations are necessary to know the exact nature, size, location of the foreign body and the difficulty involved in its retrieval. In the present case, two beads, one radiopaque and one radiolucent were found in the same tooth at different places of 11-year-old girl. Patient did no...

Developmental dental anomalies refer to deviation from the normal size, shape, number or structure of external and internal anatomy of a tooth. Their presence have functional and clinical significance. With no definite reason some dental anomalies may occur commonly in some specific teeth like microdontia in maxillary lateral incisors, dens invaginatus in maxillary lateral incisors, dens evagin...

This retrospective investigation was designed to compare tooth size discrepancies among subjects with different skeletal malocclusions in an orthodontic population. The study employed the pre-treatment models of 200 patients (100 males, 100 females, aged from 14 to 20 years) selected from the records of the Orthodontic Department, Shiraz Dental School. The subjects were from four malocclusion g...

OBJECTIVES The aims of the present study were to determine anterior and total tooth-width ratios in a representative Iranian sample in Tabriz city and compare them with the Bolton standards. STUDY DESIGN A total of 54 Iranian schoolchildren (12-14 years old) in Tabriz were examined. Alginate impressions were taken for subjects and poured by the dental stone. The mesiodistal widths of the teet...

A. Error. This word is used correctly with two different meanings: 1. To denote the difference between a measured value and the "true" value. Except in a few trivial cases, the "true" value is unknown and the magnitude of the error is hypothetical. 2. When a number such as (±.087) is given or implied, "error" refers to the estimated uncertainty in an experiment and is expressed in terms of such...

INTRODUCTION Technological advances in Dentistry have emerged primarily in the area of diagnostic tools. One example is the 3D scanner, which can transform plaster models into three-dimensional digital models. OBJECTIVE This study aimed to assess the reliability of tooth size-arch length discrepancy analysis measurements performed on three-dimensional digital models, and compare these measure...