A Refined Method of Measuring Basal Crown and Cusp Areas by Use of a Three-dimensional Digitizing System
Bibliographic Data
| ID | 6136091 |
|---|---|
| Authors | Gen Suwa (0000-0003-3880-2458, The University of Tokyo), Reiko Kono-Takeuchi (The University of Tokyo) |
| Year | 1998 |
| Volume | 106 |
| Issue | Supplement |
| Pages | 95-105 |
| Publication date | 1998-01-01 |
| Peer Reviewed | Yes |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | Anthropological Science (JOURNAL) |
| Journal identifiers | ISSN: 0918-7960 • E-ISSN: 1348-8570 |
| Publisher | Anthropological Society of Nippon (PUBLISHER • JP) |
| DOI | 10.1537/ase.106.supplement_95 |
| OpenAlex | W2033838393 |
| Language | EN |
| Citations received | 2 |
| References cited | 4 |
In measuring basal crown and cusp areas of molars, one must determine a standard reference plane on which the projected measurements are made. In this paper, we present a new three-dimensionally based system which enables an objective determination of crown orientation. This is done by combining five laser scanned images of a molar taken occlusally and from four oblique angles to form a composite three-dimensional representation of the entire molar crown surface. Using this digitized data set, we derive a standard occlusal orientation that maximizes projected occlusal surface area. We can also choose other orientations for projection, such as those defined by the cervical line or cusp apices. Crown and cusp areas were measured in each of these orientations and compared for discrepancies on a mandibular first molar of Australopithecus afarensis. We found that orientations differ by more than 10 degrees, resulting in large discrepancies in cusp area values. It is concluded that, to enable reliable interpretation of cusp area data, whatever orientation methods used should be carefully chosen and rigidly followed
Algorithm · Crown (dentistry · Cusp (singularity · Geometry · Molar · Orientation (vector space · Projection (relational algebra · Surface (topology · 3D Surveying and Cultural Heritage · Dental Radiography and Imaging · Forensic Anthropology and Bioarchaeology Studies · Mathematics · Medicine · Orthodontics
Quantitative Analysis of the Shovel-Shaped Character in the Incisors
Quantitative Analysis of the Hypocone in the Human Upper Molars
Allometric Variation on Cuspal Areas of the Lower First Molar in Three Racial Populations
Further analysis of mandibular molar crown and cusp areas in Pliocene and early Pleistocene hominids
| Unique citing works | 2 |
|---|---|
| Citations per year | 0,09 |
| Citation span | 2004 - 2005 (2) |
| Citation velocity | historical |
| Highly cited | No |
| Citation types | Neutral: 2 |