scholarly journals Technical Note: The Definition of New Dental Morphological Variants Related to Malocclusion

2018 ◽  
Vol 31 (1) ◽  
pp. 10-18 ◽  
Author(s):  
Marin A. Pilloud
Keyword(s):  
Morphological Traits ◽  
Technical Note ◽  
Population Variation ◽  
State University ◽  
Arizona State University ◽  
Dental Anthropology ◽  
Anthropological Research ◽  
Morphological Variants ◽  
Definition Of

Since the codification of the Arizona State University Dental Anthropology System over 25 years ago, few additional morphological traits have been defined.  This work serves to expand the current suite of traits currently collected by biological anthropologists.  These traits surround various issues of malocclusion and follow clinical definitions of these traits as well as incorporate observed population variation in character states.  These traits include issues of spacing (i.e., diastema and crowding) as well as mandibular and maxillary occlusion (i.e., overbite, underbite).  A discussion of the etiology and utility of these traits in bioarchaeological and forensic anthropological research is also given.

Readjustment of the Standard ASUDAS to Encompass Dental Morphological Variations in Plio-Pleistocene Hominins

2018 ◽  
Vol 30 (1-2) ◽  
pp. 32-48
Author(s):  
M. Louail ◽  
S. Prat
Keyword(s):  
Phylogenetic Relationships ◽  
Homo Sapiens ◽  
Initial Study ◽  
Morphological Characters ◽  
State University ◽  
Arizona State University ◽  
Dental Anthropology ◽  
Morphological Variations ◽  
Fossil Hominins ◽  
Fossil Hominin

The standard ASUDAS scoring system (Arizona State University Dental Anthropology System) is used to assess dental morphological variations in modern humans. It is also frequently used to study, score, and compare morphological variations in fossil hominin taxa and to examine their phylogenetic relationships. However, using ASUDAS in studies of this type is under debate because it is based on modern Homo sapiens populations and does not appear to cover all variations observed in fossil Plio-Pleistocene homi- nins. Our observations and coding of 178 dentals casts of Plio-Pleistocene specimens based on ASUDAS and from the literature have confirmed the need to adapt the standard system to fossil hominins. In this initial study, we propose that the scoring procedures for some morphological characters need to be readjusted, while others could be standardized following the ASUDAS system.

scholarly journals Morphological characterization of permanent dentition of a group of Afrodescendants at Istmina (Chocó, Colombia)

2018 ◽  
Vol 25 (2) ◽  
pp. 17
Author(s):  
Pedro Asprilla ◽  
Kevin Franco ◽  
Jessica Morales ◽  
Freddy Moreno
Keyword(s):  
Cross Sectional Study ◽  
Morphological Characterization ◽  
Permanent Dentition ◽  
Indigenous Populations ◽  
Dental Morphology ◽  
State University ◽  
Arizona State University ◽  
Dental Anthropology ◽  
Cross Sectional ◽  
Central Ridge

  Aim: Characterize the permanent dentition morphology of a group of Afrodescendants of Istmina (Chocó, Colombia). Materials y methods: This quantitative cross-sectional study determined the frequency and variability of 35 incisor, canine, premolar and molar morphological features of the Arizona State University Dental Anthropology System in 100 self-described individuals as Afrodescendants (50 Female and 50 male), aged between 5 and 18 years. Results: Significant frequencies of winging (99%), double blade of the central incisors (86%), convexity of the lips (41%), crest of the shoulder (35%), and distal crest (39% to 45%) were identified (95% to 98%), central ridge (82% and 80%), mesolingual groove (79%), distolingual groove (81%), hippocampus reduction (86%), Carabelli cusp ) And cusp 7 (64%). No sexual dimorphism and bilateral asymmetry were found in the MCDS studied. Conclusions: The frequency and variability of the MCDD included in the dendrogram showed that the Isthmian group had a typical dental morphology of the Afrodescendant populations distributed on the Colombian Pacific coast, which were derived from groups of the West African coast included in The dental complex of Saharan Africa. Likewise, it was possible to detect the influence of mestizo and indigenous populations occupying the same geopolitical space.

scholarly journals 2012 Dahlberg Award Winner Dental morphological variation among six Pre-Hispanic South American populations with implications for the peopling of the New World

2018 ◽  
Vol 26 (1-2) ◽  
pp. 20-32 ◽  
Author(s):  
Alejandra Ortiz
Keyword(s):  
New World ◽  
South American ◽  
Northern Coast ◽  
State University ◽  
Arizona State University ◽  
Dental Anthropology ◽  
Low Frequencies ◽  
High Frequencies ◽  
Statistical Program ◽  
The Mean

The analysis of the human dentition pro-vides important information on the origins and dispersals of the first American inhabitants. However, most of this work has focused on North America, whereas less research has been devoted to variation within Central and South America. This study examines the permanent dentitions of 340 individuals from six pre-Hispanic South American populations and places them in the broader context of the peopling of the New World. Non-metric dental data were collected using the Arizona State University Dental Anthropology System (ASUDAS). Intra- and inter-regional comparisons were assessed using the Mean Measure of Divergence statistical program. All samples are characterized by relatively high frequencies of UM1 enamel extension and LM1 deflecting wrinkle and low frequencies of UM1 cusp 5 and LM2 Y-groove pattern. Although preliminary, results indicate that populations from Chile, Venezuela and Peru-Northern Coast are dentally similar and follow the Sinodont dental pattern. The Peru-Southern Highlands sample is the most divergent of the South American groups examined, showing the closest affinities with Sundadonts. Finally, no clear pattern was found for Bolivia and Peru-Amazonian Andes, as most of their trait frequencies fall within the range of overlap between Sinodont and Sundadont populations.

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