Tooth Size And Occlusion In Twins
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Tooth Size And Occlusion In Twins
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Author : Anders Lundström
language : en
Publisher:
Release Date : 1948
Tooth Size And Occlusion In Twins written by Anders Lundström and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Heredity, Human categories.
Tooth Size And Occlusion In Twins
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Author : Anders Lundström
language : sv
Publisher:
Release Date : 1948
Tooth Size And Occlusion In Twins written by Anders Lundström and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with categories.
Tooth Size And Occlusion In Twins Etc A Thesis
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Author : Anders LUNDSTRÖM
language : en
Publisher:
Release Date : 1948
Tooth Size And Occlusion In Twins Etc A Thesis written by Anders LUNDSTRÖM and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with categories.
Tooth Size And Occlusion In Twins By Anders Lundstr M Akad Avh
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Author : Anders Lundström
language : en
Publisher:
Release Date : 1948
Tooth Size And Occlusion In Twins By Anders Lundstr M Akad Avh written by Anders Lundström and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with categories.
Twin Studies
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Author : Grant C Townsend
language : en
Publisher: University of Adelaide Press
Release Date : 2015-10-08
Twin Studies written by Grant C Townsend and has been published by University of Adelaide Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-08 with Health & Fitness categories.
This volume is about an ongoing long-term research initiative led by researchers from the School of Dentistry at the University of Adelaide. The aim of this book is to provide an overview of the studies of the teeth and faces of Australian twins and their families that have extended over more than thirty years.
A Study Of Dental Occlusion In Twins
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Author : James R. Willcox
language : en
Publisher:
Release Date : 1970
A Study Of Dental Occlusion In Twins written by James R. Willcox and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with categories.
A Study Of Genetic Control Of Tooth Size Utilizing The Twin Study Method
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Author : Jack T. Bell
language : en
Publisher:
Release Date : 1969
A Study Of Genetic Control Of Tooth Size Utilizing The Twin Study Method written by Jack T. Bell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.
Heredity S Part In Tooth Size As Related To Twins Siblings And Non Blood Related Individuals
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Author : Jose M. Rivera
language : en
Publisher:
Release Date : 1953
Heredity S Part In Tooth Size As Related To Twins Siblings And Non Blood Related Individuals written by Jose M. Rivera and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with categories.
Infraocclusion Of Primary Molars And Associated Dental Anomalies In Twins And Singletons
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Author : Ruba Mohammed Odeh
language : en
Publisher:
Release Date : 2013
Infraocclusion Of Primary Molars And Associated Dental Anomalies In Twins And Singletons written by Ruba Mohammed Odeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Occlusion (Dentistry) categories.
The process of tooth eruption involves complex interactions between genetic, epigenetic and environmental factors. 'Infraocclusion' refers to a tooth that is positioned below the normal plane of occlusion. This study aims to determine the frequency of occurrence of infraocclusion in the primary molars and to find out whether there are associations between infraocclusion and several variables. Further, it is planned to clarify the roles of genetic, epigenetic and environmental factors in contributing to observed variation in infraocclusion, and to estimate the frequency of occurrence of some selected dental anomalies in association with infraocclusion. Orthopantomographs of 1,454 healthy singleton Finnish boys and girls aged between 9-10 years, and study models of 320 Australian twin pairs aged between 8-10 years were examined. Adobe Photoshop CS5 computer software was used to construct reference lines (from the mesial marginal ridge of the mandibular first permanent molar to the cusp tip of the primary canine or the mesioincisal edge of the permanent lateral incisor). The distances between reference points were measured (in mm) for both samples and categorised into non-infraoccluded, mild, moderate, and severe. Genetic modelling was also used to quantify the contribution of genetic and environmental factors to observed variation. The orthopantomographs were examined for the presence of associated dental anomalies. Dental age and tooth size assessment were carried out in individuals showing infraocclusion. Descriptive statistics, including mean values, standard deviations and percentage frequencies, were used to summarise data within groups and comparisons between groups were made using t-tests and chi-square analyses. The overall prevalence of infraocclusion was 22% in singletons, and 27 % in twins. The primary mandibular first molar was the most commonly affected tooth (21% in singletons and 28% in twins compared with 6% and 18% for the mandibular second molar in singletons and twins respectively). Genetic modelling indicated a strong genetic contribution (~94%) to observed variation in the primary mandibular first molar, while common and unique environmental factors contributed to infraocclusion of the primary mandibular second molar. Investigation of MZ twin pairs revealed differences in the expression of infraocclusion within some twin pairs, for example, mirror imaging. These findings reflect epigenetic events and/or environmental disturbances that have occurred during the developmental process. Analysis of dental anomalies in singletons revealed a significant association of ectopic canines and the lateral incisor complex with infraocclusion. Individuals showing infraocclusion displayed delayed dental development and evidence of reduced primary tooth size. The findings showed that genetic factors play a major role in contributing to infraocclusion of the primary mandibular first molar, whereas environmental factors contribute more to variation in infraocclusion of the second molar. These environmental factors could occur in the prenatal or early postnatal stages of life and may disrupt the network of epithelial rests of Malassez, leading to localised areas of ankylosis. A possible pleiotropic effect was reflected by the presence of associated dental anomalies with infraocclusion. These findings are significant in improving understanding of the basic biological mechanisms and associated features of infraocclusion, and should assist clinicians in providing proper counselling, early diagnoses, prevention and treatment planning for affected individuals.
Arch Growth And Development Of The Occlusion In Twins
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Author : Nicole Marie-Louise Cessac
language : en
Publisher:
Release Date : 1961
Arch Growth And Development Of The Occlusion In Twins written by Nicole Marie-Louise Cessac and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1961 with categories.