A stereoscopic X-ray procedure for locating the centroidal axis of the root of a maxillary central incisor
| Autor: | William L. Kydd, C. H. Daly, Jack I. Nicholls |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
Engineering drawing
business.industry Radiography Rehabilitation Coordinate system Biomedical Engineering Biophysics Root (chord) Stereoscopy Geometry law.invention Incisor Machined surface X-ray procedure law Maxilla Methods Radiography Dental Humans Orthopedics and Sports Medicine Maxillary central incisor Tooth Root business Technology Radiologic Geology |
| Zdroj: | Journal of Biomechanics. 5:159-164 |
| ISSN: | 0021-9290 |
| DOI: | 10.1016/0021-9290(72)90051-6 |
| Popis: | A stereoscopic X-ray technique for determining the centroidal axis of a maxillary central incisor is described in this paper. This axis is defined by two points, the first being the apex of the root and the second defined as being between two lead foil markers on the labial and lingual surfaces. The X-ray film is located against a flat machined surface which contains two gold inserts defining an x-y coordinate system, from which measurements can be made directly. The determination of the locations of the two required points on the centroidal axis required that three separate radiographs be taken of the specified tooth from three given directions. The stereoscopic X-ray device used for this purpose allows accurate control on the relative positions of the X-ray source, the tooth and the X-ray film. Accuracy was checked by photographing a radio-opaque target and the results of this check indicated a potential error of 0·001 in. |
| Databáze: | OpenAIRE |
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