Biomaterial Database

Determination of tooth length with a standardized paralleling technique and calibrated radiographic measuring film. 1979

T A Larheim, and S Eggen

A simple radiographic measuring method is presented. Fifty teeth to be extracted were radiographed by means of a standardized paralleling technique and a preprinted intraoral radiographic film. The measuring grid was conveyed to the film as a latent pattern by a stenciling process prior to the x-ray exposure. The distance between the measuring lines was adjusted in accordance with the image magnification. The length of the teeth was read directly on the completed radiograph. The extracted teeth were measured by means of a sliding caliper. A statistical analysis of the data indicated that the present method is more accurate than other clinical methods commonly used for determination of tooth lengths.

UI	MeSH Term	Description	Entries
D009811	Odontometry	Measurement of tooth characteristics.
D011858	Radiographic Magnification	Use of optic and geometric techniques to enhance radiographic image quality and interpretation. It includes use of microfocal X-ray tubes and intensifying fluoroscopic screens.	Magnification, Radiographic,Magnifications, Radiographic,Radiographic Magnifications
D003762	Dental Instruments	Hand-held tools or implements especially used by dental professionals for the performance of clinical tasks.	Instrument, Dental,Dental Instrument,Instruments, Dental
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013679	Technology, Radiologic	The application of scientific knowledge or technology to the field of radiology. The applications center mostly around x-ray or radioisotopes for diagnostic and therapeutic purposes but the technological applications of any radiation or radiologic procedure is within the scope of radiologic technology.	Radiologic Technology,Technology, Radiological,Radiological Technology
D014070	Tooth	One of a set of bone-like structures in the mouth used for biting and chewing.	Teeth
D014092	Tooth Root	The part of a tooth from the neck to the apex, embedded in the alveolar process and covered with cementum. A root may be single or divided into several branches, usually identified by their relative position, e.g., lingual root or buccal root. Single-rooted teeth include mandibular first and second premolars and the maxillary second premolar teeth. The maxillary first premolar has two roots in most cases. Maxillary molars have three roots. (Jablonski, Dictionary of Dentistry, 1992, p690)	Root, Tooth,Roots, Tooth,Tooth Roots