Sensitometric characteristics of D-, E- and F-speed dental radiographic films in manual and automatic processing

Haghani, Jahangir and Torabi, Molouk and Fahimi-Hanzaei, Farnaz and Tahmasbi-Arashlow, Mehrnaz (2015) Sensitometric characteristics of D-, E- and F-speed dental radiographic films in manual and automatic processing. Journal of Oral Health & Oral Epidemiology.

[img]
Preview
Text
15-79-1-PB.pdf - Published Version

Download (116kB) | Preview
Official URL: http://johoe.kmu.ac.ir

Abstract

BACKGROUND AND AIM: The purpose of this study was to evaluate the sensitometric characteristics of Ultraspeed, Ektaspeed Plus and Insight dental radiographic films using manual and automatic processing systems. METHODS: In this experimental invitro study, an aluminum step-wedge was used to construct characteristic curves for D-, E- and F-speed radiographic films (Kodak Eastman, Rochester, USA). All films were processed in Iranian processing solution (chemical industries Co., Iran, Tehran) both manually and automatically in a period of six days. Unexposed films of three types were processed manually and automatically to determine base plus fog density. Speed and film contrast were measured according to International Standard Organization definition. RESULTS: There was significant difference in density obtained with the D-, E- and F-speed films in both manually and automatically processing systems (P < 0.001). There was significant difference in density obtained with the Ultraspeed and insight films. There was no significant difference in contrast obtained with the D-, E- and F-speed films in both manually and automatically processing systems (P = 0.255 , P = 0.260). There was significant difference in speed obtained with the D-, E- and F-speed films in both manually and automatically processing systems (P = 0.034, P = 0.040). CONCLUSIONS: The choice of processing system can affect radiographic characteristics. The F-speed film processed in automatic system has greater speed in comparison with manual processing system, and it provides a further reduction in radiation exposure without detriment to image quality. KEY WORDS: Automatic Processing, Dental Radiography, Manual Processing, Radiographic Film Classification, Sensitometry, X-ray Film

Item Type: Article
Subjects: R Medicine > RK Dentistry
Depositing User: shiva pooradeli pooradeli
Date Deposited: 01 Dec 2015 04:26
Last Modified: 01 Dec 2015 04:47
URI: http://eprints.kmu.ac.ir/id/eprint/21435

Actions (login required)

View Item View Item