Radiographic techniques for medical-dental research with minipigs.
Techniques were developed to obtain standardised intra- and extra-oral radiographs in minipigs for use in medical-dental research. Twelve male minipigs (BR-1 Minipigs) were chosen at random. Two animals each at 3, 5, 7, 9, 12 and 15 months of age were anaesthetised and subjected to radiographic examinations to assess six techniques. Three intra-oral and three extra-oral techniques, standardised for humans, were used with variations of the angle of incidence of the X-ray beams, focus-film distance and exposure time. Two film positioners were developed for the intra-oral techniques. Two examiners then chose the radiographs with the least image distortion, greatest clarity and least superimposition of images. For each technique, the suitable angle of incidence of the X-ray beams, the focus-film distance and exposure time that produced the highest quality radiographs were standardised.
Navarro
Ricardo L
RL
Orthodontics Department, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil. rlnavarr@usp.br
Oltramari
Paula V P
PV
Henriques
José F C
JF
Capelozza
Ana L A
AL
Sant'ana
Eduardo
E
Granjeiro
José Mauro
JM
D000818:Animals; D008297:Male; D009055:Mouth / Q000000981:diagnostic imaging*; D011861:Radiography, Dental / Q000379:methods / Q000662:veterinary*; D013552:Swine; D013556:Swine, Miniature / Q000033:anatomy & histology*