The purpose of this study is to determine the influence on four premolar extractions for upper and lower anterior tooth size discrepancy (for total Bolton index (TBI=Overall ratio) and for Bolton value (BV)) and to find out the differences of four first and second premolar extractions tooth size discrepancies (TSD). 148 pretreatment dental casts have been examined. It has been determined that u...

Participating in the International Symposium on Early Orthodontic Treatment allowed me to review our long-term studies of orthodontic and orthopedic intervention in patients in the mixed and early permanent dentition periods who present with tooth size-arch length discrepancies. I hope this brief synopsis of that research will spur the reader to examine our textbook, a short conceptual article ...

There has always been concern in determining the relationship between orthodontic tooth movement and the consequent biological costs to the periodontium and tooth root. The possibility of evaluating the tooth and bone morphology by CBCT allows more accurate analysis of qualitative and quantitative aspects of these processes. This paper presents a case report of a 20-year-old male patient with C...

June 2009—Volume 30, Number 5 Numerous, complex problems influence anterior dental esthetics. The most common include tooth-size discrepancies caused by various factors, such as small lateral incisors, excessive incisal wear of anterior teeth with accompanying dentoalveolar extrusion, chemical erosion of enamel (eg, bulimia), congenitally missing teeth (eg, oligodontia), damaged or missing teet...

The mixed dentition analysis described by Moyers, and later validated by Tanaka, was performed on 80 American blacks to compare prediction equations between Caucasians and blacks. For the black sample, separate regression formulas were determined for the 39 males and 41 females and the combined black sample. Although sexual dimorphism of tooth size was not a consideration in the Moyers predicti...

OBJECTIVE To determine and compare the reproducibility and speed of two methods of performing Bolton's tooth-size analysis. DESIGN Analysis of randomly selected clinical sample. SETTING Bristol Dental Hospital, University of Bristol, United Kingdom. MATERIALS AND METHODS Pre-treatment study casts of 150 patients were selected randomly from 1100 consecutively treated Caucasian orthodontic ...

OBJECTIVE To investigate whether discrepancies in trials of use of bone marrow stem cells in patients with heart disease account for the variation in reported effect size in improvement of left ventricular function. DESIGN Identification and counting of factual discrepancies in trial reports, and sample size weighted regression against therapeutic effect size. Meta-analysis of trials that pro...

Objectives: A descriptive study of exploratory character with the objective to determine the representation of a healthy tooth and an unhealthy tooth, associated with the concept of dental decay. Methods: Children of both genders (880), distributed in six age groups of low socio-economic level, some already having prior contact with the dentist and others not. Three instruments were used: a soc...

Research has shown a negative relationship between perceived body size discrepancies and exercise participation among women. This might be explained from a selfdetermination theory perspective by perceived discrepancies between actual and ideal body size causing individuals to feel less autonomous in the regulation of their exercise behaviour. The aim of this study was to test the mediating rol...