Global ETD Search
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Showing 1 to 18 of 18 for “"Tooth Size"”.
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Analysis of Bolton's tooth size discrepancy for a referred UK population
… of this study are: • To study the incidence of tooth size discrepancy in a UK population • To establish whether there are differences between males and females. • To assess racial differences for tooth size discrepancies in different malocclusion categories. Malocclusion groups included: Class …
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Tooth Size Ratio in Orthodontic Patients with Varied Sagittal Skeletal Patterns; A CBCT Study
<p>Objective: Maxillomandibular tooth size ratio (TSR) is an important aspect in achieving a satisfactory orthodontic outcome. The purpose of this study is to compare TSR among orthodontically treated patients with different skeletal anteroposterior (AP) patterns. Methods and Materials: The …
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Nutritional Stress & Early Development in the Neolithic Near East: A Comparison of Adult and Subadult Tooth Size
… Therefore, this study aims to evaluate size of the dentition of adults and subadults to evaluate potential changes in stress during the Neolithic in relation to diet. A comparison of adult and subadult teeth was performed between the populations of Çatalhöyük and Aşıklı Höyük, along with …
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Mesiodistal Crown Size in Relation to the Risk and Severity of Malocclusion
… potential causes of dental malocclusion, tooth size has been implicated as one factor. Prior studies show that mesiodistally larger teeth increase the risk of malocclusion. The present report extends our understanding by testing for graded responses between crown size and the extent of …
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Big Brains and Small Teeth: a primate comparative approach to dental and mandibular reduction in hominins
… a decrease in mandibular robusticity and in the size of anterior and postcanine dentition, a trend that is usually referred to as reduction or gracilisation. Factors linked to diet, food processing and encephalization have been suggested to be the main drivers of this trend. Stone tools and fire …
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Influence of Tooth Crown Size on Malocclusion
… most instances, one contributing factor may be tooth size. While several researchers have studied whether tooth size contributes to malocclusion, there still is no consensus. Some have found that the mesiodistal widths of the mandibular incisor teeth are significantly larger in subjects with …
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What’s in a Tooth? Signals of Ecogeography and Phylogeny in the Dentition of Macaques (Cercopithecidae: Macaca)
… although correlations are strongest within tooth classes. Size was a strong contributing factor to dental integration, as evinced by lower correlations between teeth once allometric effects were removed. Integration patterns also showed modularity between the anterior and the posterior …
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Reconstructing the ecological relationships of the latest Cretaceous Antarctic dinosaurs and how functional tooth morphology influenced diet and ecological niche among basal Ornithopod dinosaurs
… also provide an in-depth analysis of functional tooth morphology that has greater implications for other ornithischians as a whole. To accomplish this goal there are a variety of methods that can be employed to garner ecological data from this long extinct group of dinosaurs. Methods that will be …
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Dentofacial parameters associated with the unilateral palatally impacted canine
… palatal depth and palatal area; anterior Bolton tooth-size discrepancy (TSD); maxillary arch shape and ratio and maxillary central and lateral incisor shape and ratio. Facial parameters: Three-dimensional (3D) images were taken for subjects in the prospective sample only, and were used to assess …
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Quantitative Analysis of First- versus Second-Premolar Extraction Effects in Orthodontic Treatment
<p>Malocclusions can involve arch-size tooth-size discrepancies that have to be resolved by premolar extractions. Treatment planning in such cases usually involves removing first (P1) or second premolars (P2). Choosing an extraction pattern is a learned skill that incorporates many diagnostic …
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Oropharyngeal Airway Volume Following Orthodontic Treatment: Premolar Extraction Versus Non-Extraction
<p>Orthodontic correction of tooth size versus arch size discrepancy (TSASD) can be achieved with two distinct methods of treatment. The first involves the extraction of teeth to gain the space needed for tooth alignment. The second relies on arch expansion to gain the space needed for correction. …
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Oropharyngeal Airway Volume Following Orthodontic Treatment: Premolar Extraction Versus Non-Extraction
<p>Orthodontic correction of tooth size versus arch size discrepancy (TSASD) can be achieved with two distinct methods of treatment. The first involves the extraction of teeth to gain the space needed for tooth alignment. The second relies on arch expansion to gain the space needed for correction. …
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First Premolar Extraction Decisions and Effects
… most common method of resolving substantial tooth size-arch length discrepancies (TSALD) is to treat patients with the extraction of premolars. Not all of the extraction space, however, is needed to eliminate the patient's TSALD. Also, it is typical that some of the extraction space will be …
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The use of permanent maxillary and mandibular canines in sex and age determination in a South African sample
… of teeth. These differences in the development, size and morphology of teeth are often used to help estimate the age and sex of unknown individuals. The aim of the study was two-fold. Firstly, it was determined whether sexually dimorphic characteristics exist in the size of permanent canines of …
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Subclinical Phenotypes and Genotypes in Parents of Children with Non-Syndromic Cleft of Lip and/or Palate
… defects and lower lip whorls, and to determine tooth size and arch width dimensions in unaffected parents of children with non-syndromic orofacial clefts (NSOFC) as a cleft-related subclinical phenotype and their association with specific candidate genes.<b><br/></b><b><br/></b><b>Methods</b>: …
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Dental Ecometrics as a Proxy of Paleoenvironment Reconstruction in the Miocene of South America
… for each species, including: diet, body size, and mode of locomotion. Niche indices that describe the relative numbers of different ecologies were calculated for each locality. These indices then served as the predictor values in a handful of regression models, including regression trees, …
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Sexual Dimorphism in Permanent Human Dentition
… studies have shown that, as body mass increases, tooth volume increases isometrically (Ungar, 2014). For example, on average, males have larger teeth than females (Schwartz and Dean, 2005). However, despite clear gross dental size differences, some studies have suggested that males and females …
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Untersuchungen über die Breitenrelation der Frontzähne und deren Missverhältnisse
Eine eugnathe Verzahnung im Frontzahnbereich ist beim Abschluss einer kieferorthopädischen Behandlung sowohl aus funktioneller als auch aus ästhetischer Sicht von größter Bedeutung. Seit über 50 Jahren findet der Bolton-Index zur Diagnose einer Zahngrößendiskrepanz im Frontzahnbereich Verwendung. …