The effects of kilovoltage and filtration on dental radiographic film sensitivity.
A sensitometric method was used to compare the effects of changing kilovoltage and filtration on the sensitivity of a dental radiographic emulsion. Five combinations were investigated: 90 kVp, 3.5 mm. aluminum filtration; 90 kVp, 2.5 mm. Al; 70 kVP, 2.5 mm. Al; 70 kVp, 1.5 mm Al; and 50 kVp, 1.5 mm. Al. Maximum emulsion sensitivity was demonstrated at 90 kVp and 3.5 mm.aluminum filtration; 90 kVp, 2.5 mm. Al and 70 kVp, 2.5 mm. Al showed slight reductions in sensitivity (4 percent and 6 percent, respectively). A progressively greater reduction in emulsion sensitivity was observed at 70 kVp, 1.5 mm. Al (10 percent) and 50 kVp, 1.5 mm. Al (26 percent). Emulsion sensitivity is one factor to be considered when one is selecting beam quality.
D005069:Evaluation Studies as Topic; D005374:Filtration; D011861:Radiography, Dental / Q000379:methods*; D014962:X-Ray Film