. Dental and oral radiography : a textbook for students and practitioners of dentistry . 41-B. The time factor will not be discussed at this junctureexcept to say that with a good x-ray machine, and aproperly regulated tube, good radiograms can be ob-tained by very short exposures in using the intraoralmethod, as the rays need only penetrate a comparatively 92 DENTAL AND ORAL RADIOGRAPHY short distance before reaching the films. In fact, withthe apparatus now available, radiograms can often beobtained by instantaneous exposures. However, instan-taneous exposures are not necessary for good radi
. Dental and oral radiography : a textbook for students and practitioners of dentistry . 41-B. The time factor will not be discussed at this junctureexcept to say that with a good x-ray machine, and aproperly regulated tube, good radiograms can be ob-tained by very short exposures in using the intraoralmethod, as the rays need only penetrate a comparatively 92 DENTAL AND ORAL RADIOGRAPHY short distance before reaching the films. In fact, withthe apparatus now available, radiograms can often beobtained by instantaneous exposures. However, instan-taneous exposures are not necessary for good radiog-raphy. X-ray apparatus which is capable of producingsharp, clear intra-oral radiograms in from two tofive seconds, is efficient enough for use in the x-ray lab-oratory of the dentist. CHAPTER VII TECHNIC OF DENTAL AND ORAL RADIOGRAPHY (Continued) Extra-oral Method The extra-oral method is, in the authors opinion, onewhich offers a very wide range of usefulness in our stated previously, this is the method used to obtainradiograms of large areas. Not only can larger areas be. Fig. 42.—The headrest of the dental chair with its many adjustments can easily bearranged so that the patients head may rest easily and firmly upon it. obtained by this method, but locations and structures in-accessible to the small films are reached and their imagesaccurately and clearly recorded upon the larger , the advantages of becoming familiar with thismethod are well worth while. 93 94 DENTAL AND ORAL RADIOGRAPHY
Size: 1819px × 1373px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1920, bookiddentaloralra, bookyear1922
