Toby Hughes
Datos Biográficos
| ID | 4334244 |
|---|---|
| NOMBRE | Toby Hughes |
| NOMBRES | Toby |
| APELLIDO | Hughes |
| FIRMA | HUGHES T |
| AFILIACIONES | The University of Adelaide |
| ORCID | 0000-0001-8668-7744 |
| VERIFICADO | Sí |
| TOTAL DE OBRAS | 11 |
| TOTAL DE CITAS | 16 |
| TOTAL COMO AUTOR | 11 |
| TOTAL COMO EDITOR | 0 |
| PRIMER AÑO DE PUBLICACIÓN | 2001 |
| AÑO MÁS RECIENTE DE PUBLICACIÓN | 2020 |
| ÍNDICE H | 3 |
Patterns of heritability across the human diphyodont dental complex
OBJECTIVES: This study generates a series of narrow-sense heritability estimates for crown morphology of the deciduous and permanent dentition with two overarching aims. The first is to test the hypothesis that deciduous teeth provide a more faithful reflection of genetic information than their permanent successors. The second is to use quantitative genetic methods to evaluate assumptions underlying common data collection and analysis practices i…
Letter of Obituary
Technical note
OBJECTIVES: Rapid prototyping (RP) technology is becoming more affordable, faster, and is now capable of building models with a high resolution and accuracy. Due to technological limitations, 3D printing in biological anthropology has been mostly limited to museum displays and forensic reconstructions. In this study, we compared the accuracy of different 3D printers to establish whether RP can be used effectively to reproduce anthropological dent…
Form, Symmetry and Asymmetry of the Dental Arch
There have been numerous attempts to quantify the shape of the dental arch mathematically, with orthogonal polynomial curves providing a robust and versatile method for quantifying variation in both shape and asymmetry. Lu (1966) first presented the theoretical basis for fitting orthogonal polynomials to arch shape data. Whilst theoretically sound, Lu’s original paper contained several arithmetic errors and a number of incorrect assumptions. In t…
Asymmetrical Eruption of Permanent Teeth in Australian Aborigines
A better understanding of the factorsinfluencing tooth eruption is important given theassociation between altered eruption patterns andcrowded or decayed teeth. Hence, the aims of this studywere to quantify the extent of asymmetry in tooth eruptionand to determine whether eruption asymmetry wassignificantly influenced by sex, tooth position or timingof emergence. Additionally, directionality of asymmetryand variation between ethnic groups were al…
Strong genetic influence on hypocone expression of permanent maxillary molars in South Australian twins
An understanding of the role of genetic influences on dental traits is important in the areas of forensic odontology, human evolution and population variation. The aims of this study were: to calculate the frequency of occurrence and degree of expression of hypocones on permanent maxillary first and second molars in a sample of South Australian twins; to compare trait expression between males and females; to compare concordance rates for trait ex…
The development of the mammalian dentition as a complex adaptive system
General characteristics of Complex Adaptive Systems include self-adaptation and or-ganisation, emergence, multitasking, robustness, critical phases, diversity and compatibility with such statistical models as Thresholds and Scale Free Networks. The aim was to investigate wheth-er dental development exhibits the general and statistical characteristics of a Complex Adaptive System, by examining data on normal and abnormal dental development. The fi…
Gaining New Insights into How Genetic Factors Influence Human Dental Development by Studying Twins
Many previous attempts to quantify the contribution of genetic factors to human dental variation using the classical twin design have been based on untested assumptions that lead to unreliable estimates of heritability. We have applied structural equation modelling to several different dental phenotypes in a sample of over 600 pairs of Australian twins, enabling the goodness-of-fit of the data to be tested against genetic models incorporating dif…
Association of frontal sinus development with somatic and skeletal maturation in Aboriginal Australians
Effect of Down syndrome on the dimensions of dental crowns and tissues
Effect of Down syndrome on the dimensions of dental crowns and tissues
Abnormal growth in Down syndrome (DS) is reflected by variable reduction in size and simplification in form of many physical traits. This study aimed to compare the thickness of enamel and dentine in deciduous and permanent mandibular incisor teeth between DS and non-DS individuals and to clarify how these tissues contribute to altered tooth size in DS. Sample groups comprised 61 mandibular incisors (29 permanent and 32 deciduous) from DS individ…
Strong genetic influence on hypocone expression of permanent maxillary molars in South Australian twins
An understanding of the role of genetic influences on dental traits is important in the areas of forensic odontology, human evolution and population variation. The aims of this study were: to calculate the frequency of occurrence and degree of expression of hypocones on permanent maxillary first and second molars in a sample of South Australian twins; to compare trait expression between males and females; to compare concordance rates for trait ex…
Technical note
OBJECTIVES: Rapid prototyping (RP) technology is becoming more affordable, faster, and is now capable of building models with a high resolution and accuracy. Due to technological limitations, 3D printing in biological anthropology has been mostly limited to museum displays and forensic reconstructions. In this study, we compared the accuracy of different 3D printers to establish whether RP can be used effectively to reproduce anthropological dent…
Gaining New Insights into How Genetic Factors Influence Human Dental Development by Studying Twins
Many previous attempts to quantify the contribution of genetic factors to human dental variation using the classical twin design have been based on untested assumptions that lead to unreliable estimates of heritability. We have applied structural equation modelling to several different dental phenotypes in a sample of over 600 pairs of Australian twins, enabling the goodness-of-fit of the data to be tested against genetic models incorporating dif…
Patterns of heritability across the human diphyodont dental complex
OBJECTIVES: This study generates a series of narrow-sense heritability estimates for crown morphology of the deciduous and permanent dentition with two overarching aims. The first is to test the hypothesis that deciduous teeth provide a more faithful reflection of genetic information than their permanent successors. The second is to use quantitative genetic methods to evaluate assumptions underlying common data collection and analysis practices i…
The development of the mammalian dentition as a complex adaptive system
General characteristics of Complex Adaptive Systems include self-adaptation and or-ganisation, emergence, multitasking, robustness, critical phases, diversity and compatibility with such statistical models as Thresholds and Scale Free Networks. The aim was to investigate wheth-er dental development exhibits the general and statistical characteristics of a Complex Adaptive System, by examining data on normal and abnormal dental development. The fi…
Effect of Down syndrome on the dimensions of dental crowns and tissues
Effect of Down syndrome on the dimensions of dental crowns and tissues
Abnormal growth in Down syndrome (DS) is reflected by variable reduction in size and simplification in form of many physical traits. This study aimed to compare the thickness of enamel and dentine in deciduous and permanent mandibular incisor teeth between DS and non-DS individuals and to clarify how these tissues contribute to altered tooth size in DS. Sample groups comprised 61 mandibular incisors (29 permanent and 32 deciduous) from DS individ…
Association of frontal sinus development with somatic and skeletal maturation in Aboriginal Australians
Gaining New Insights into How Genetic Factors Influence Human Dental Development by Studying Twins
Many previous attempts to quantify the contribution of genetic factors to human dental variation using the classical twin design have been based on untested assumptions that lead to unreliable estimates of heritability. We have applied structural equation modelling to several different dental phenotypes in a sample of over 600 pairs of Australian twins, enabling the goodness-of-fit of the data to be tested against genetic models incorporating dif…
Technical note
OBJECTIVES: Rapid prototyping (RP) technology is becoming more affordable, faster, and is now capable of building models with a high resolution and accuracy. Due to technological limitations, 3D printing in biological anthropology has been mostly limited to museum displays and forensic reconstructions. In this study, we compared the accuracy of different 3D printers to establish whether RP can be used effectively to reproduce anthropological dent…
Form, Symmetry and Asymmetry of the Dental Arch
There have been numerous attempts to quantify the shape of the dental arch mathematically, with orthogonal polynomial curves providing a robust and versatile method for quantifying variation in both shape and asymmetry. Lu (1966) first presented the theoretical basis for fitting orthogonal polynomials to arch shape data. Whilst theoretically sound, Lu’s original paper contained several arithmetic errors and a number of incorrect assumptions. In t…
Asymmetrical Eruption of Permanent Teeth in Australian Aborigines
A better understanding of the factorsinfluencing tooth eruption is important given theassociation between altered eruption patterns andcrowded or decayed teeth. Hence, the aims of this studywere to quantify the extent of asymmetry in tooth eruptionand to determine whether eruption asymmetry wassignificantly influenced by sex, tooth position or timingof emergence. Additionally, directionality of asymmetryand variation between ethnic groups were al…
Strong genetic influence on hypocone expression of permanent maxillary molars in South Australian twins
An understanding of the role of genetic influences on dental traits is important in the areas of forensic odontology, human evolution and population variation. The aims of this study were: to calculate the frequency of occurrence and degree of expression of hypocones on permanent maxillary first and second molars in a sample of South Australian twins; to compare trait expression between males and females; to compare concordance rates for trait ex…
The development of the mammalian dentition as a complex adaptive system
General characteristics of Complex Adaptive Systems include self-adaptation and or-ganisation, emergence, multitasking, robustness, critical phases, diversity and compatibility with such statistical models as Thresholds and Scale Free Networks. The aim was to investigate wheth-er dental development exhibits the general and statistical characteristics of a Complex Adaptive System, by examining data on normal and abnormal dental development. The fi…
Letter of Obituary
Patterns of heritability across the human diphyodont dental complex
OBJECTIVES: This study generates a series of narrow-sense heritability estimates for crown morphology of the deciduous and permanent dentition with two overarching aims. The first is to test the hypothesis that deciduous teeth provide a more faithful reflection of genetic information than their permanent successors. The second is to use quantitative genetic methods to evaluate assumptions underlying common data collection and analysis practices i…
dental development and anomalies (7 obras) · Medicine (7 obras) · Biology (6 obras) · Dentistry (5 obras) · Orthodontics (5 obras) · Molar (4 obras) · Evolutionary biology (3 obras) · Heritability (3 obras) · Physics (3 obras) · Asymmetry (2 obras)