Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study
The aim of this study was to establish whether there is a significant relationship between the total occlusal area (TOCA) of two types of permanent upper molars (first—M<sup>1</sup> and second—M<sup>2</sup>) and facial robusticity, as well as which of the examined facial regi...
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MDPI AG
2023-04-01
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| Online Access: | https://www.mdpi.com/2079-7737/12/4/566 |
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| author | Wioletta Nowaczewska Katarzyna Górka Agata Cieślik |
| author_facet | Wioletta Nowaczewska Katarzyna Górka Agata Cieślik |
| author_sort | Wioletta Nowaczewska |
| collection | DOAJ |
| description | The aim of this study was to establish whether there is a significant relationship between the total occlusal area (TOCA) of two types of permanent upper molars (first—M<sup>1</sup> and second—M<sup>2</sup>) and facial robusticity, as well as which of the examined facial regions indicate a relationship concerning the grade of their massiveness with the TOCA of analyzed molars in different sex adult <i>Homo sapiens</i> cranial samples. To obtain the values of the TOCA of the molars (n = 145), a morphometric method was performed based on the calibrated digital images of their occlusal surface using ImageJ software. The grades of the massiveness of six facial regions were assessed using qualitative scales of their expression, and an index of general facial robusticity was calculated. Two types of analyses were performed concerning standardized and non-standardized traits to the facial size, including Spearman’s/or Pearson’s correlations and partial rank correlations. The obtained results indicated the presence of a positive relationship between the relative TOCA of M<sup>2</sup>s and the relative general facial robusticity, as well as between the TOCA of both types of molars and the massiveness of trigone region of the facial skeleton in male crania. However, most of the obtained results were not consistent with the assumptions of the “localized masticatory stress hypothesis”. |
| first_indexed | 2024-03-11T05:14:04Z |
| format | Article |
| id | doaj.art-7bc8c50ccc164e82ae9021b8bc99d722 |
| institution | Directory Open Access Journal |
| issn | 2079-7737 |
| language | English |
| last_indexed | 2024-03-11T05:14:04Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Biology |
| spelling | doaj.art-7bc8c50ccc164e82ae9021b8bc99d7222023-11-17T18:24:02ZengMDPI AGBiology2079-77372023-04-0112456610.3390/biology12040566Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary StudyWioletta Nowaczewska0Katarzyna Górka1Agata Cieślik2Department of Human Biology, University of Wrocław, S. Przybyszewskiego 63, 51-148 Wroclaw, PolandDepartment of Anthropology, L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Podwale 75, 50-449 Wroclaw, PolandDepartment of Anthropology, L. Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Podwale 75, 50-449 Wroclaw, PolandThe aim of this study was to establish whether there is a significant relationship between the total occlusal area (TOCA) of two types of permanent upper molars (first—M<sup>1</sup> and second—M<sup>2</sup>) and facial robusticity, as well as which of the examined facial regions indicate a relationship concerning the grade of their massiveness with the TOCA of analyzed molars in different sex adult <i>Homo sapiens</i> cranial samples. To obtain the values of the TOCA of the molars (n = 145), a morphometric method was performed based on the calibrated digital images of their occlusal surface using ImageJ software. The grades of the massiveness of six facial regions were assessed using qualitative scales of their expression, and an index of general facial robusticity was calculated. Two types of analyses were performed concerning standardized and non-standardized traits to the facial size, including Spearman’s/or Pearson’s correlations and partial rank correlations. The obtained results indicated the presence of a positive relationship between the relative TOCA of M<sup>2</sup>s and the relative general facial robusticity, as well as between the TOCA of both types of molars and the massiveness of trigone region of the facial skeleton in male crania. However, most of the obtained results were not consistent with the assumptions of the “localized masticatory stress hypothesis”.https://www.mdpi.com/2079-7737/12/4/566human cranial robusticitytotal occlusal areapermanent upper molarssupraorbital regionsfacial superstructures |
| spellingShingle | Wioletta Nowaczewska Katarzyna Górka Agata Cieślik Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study Biology human cranial robusticity total occlusal area permanent upper molars supraorbital regions facial superstructures |
| title | Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study |
| title_full | Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study |
| title_fullStr | Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study |
| title_full_unstemmed | Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study |
| title_short | Assessment of the Relationship between the Total Occlusal Area of the Human Permanent Upper First and Second Molars and the Robusticity of the Facial Skeleton in Sex-Different Cranial Samples of Homo Sapiens: A Preliminary Study |
| title_sort | assessment of the relationship between the total occlusal area of the human permanent upper first and second molars and the robusticity of the facial skeleton in sex different cranial samples of homo sapiens a preliminary study |
| topic | human cranial robusticity total occlusal area permanent upper molars supraorbital regions facial superstructures |
| url | https://www.mdpi.com/2079-7737/12/4/566 |
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