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Hindi Research Article
Radiographic Density and Contrast of Images of Individual Films from Double Film Packets
Plauto Christopher Aranha Watanabe1*, Angela Jordão Camargo2 and Luiz Carlos Pardini1
1Department of Stomatology, Public Oral Health and Forensic Dentistry, Ribeirão Preto Dental School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
2Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo, São Paulo, Brazil
- *Corresponding Author:
- Plauto Christopher Aranha Watanabe
Department of Stomatology, Public Oral Health and Forensic Dentistry
Ribeirão Preto Dental School-University of São Paulo, Cafe Avenue
Zip Code: 14040-904, Ribeirão Preto, SP, Brazil
Tel: +55 16 3315-3993
E-mail: watanabe@forp.usp.br
Received date: August 02, 2016; Accepted date: September 24, 2016; Published date: September 29, 2016
Citation: Watanabe PCA, Camargo AJ, Pardini LC (2016) Radiographic Density and Contrast of Images of Individual Films from Double Film Packets. Cosmetol & Oro Facial Surg 2:110.
Copyright: © 2016 Watanabe PCA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Abstract
The aim of this study was determined whether individual films from unexpired and expired double packets present the same image quality in terms of radiographic density and contrast. Methods: An aluminum step wedge was radiographed using 20 Agfa periapical double film packets. 10 of them unexpired and 10 used 5 years after the expiration date, maintained under refrigeration at 10°C. Results: Statistical analysis showed a significant difference in radiographic density (p<0.01) and contrast (p<0.05) between individual films from unexpired double packets, whereas the individual films of the expired packets did not differ. Compared the individual films without using the values of direct film exposure (zero) the difference in contrast between individual films was no longer present, but optic density was still significantly different (p<0.05) for the unexpired group. Conclusion: Within the limitations of this study, the results suggest there is a difference in quality of the radiographic image between the individual films of double packets when submitted to laboratory analysis.
