The influence of film type and processing method on radiographic density for occlusal caries diagnosis

Authors

  • Henrique Auriemo Pellegrini Graduation Student, School of Dentistry, University of São Paulo, SP
  • Ana da Silveira DDS, Professor, Community Dentistry Department, Pará Federal University, Belém, PA
  • Cesar Angelo Lascala PhD, Associated Professor, Stomatology Department, School of Dentistry, University of São Paulo, SP
  • Claudio Costa PhD, Associated Professor, Stomatology Department, School of Dentistry, University of São Paulo, SP
  • Maria Aparecida Alves de Cerqueira Luz Associated Professor, Operative Dentistry Department, School of Dentistry, University of São Paulo, SP

DOI:

https://doi.org/10.11606/issn.2357-8041.clrd.2015.123684

Keywords:

Diagnóstico radiográfico, cárie dental, radiografia dental digital, odontologia em saúde coletiva

Abstract

Objectives:     This study aimed to investigate the influence of the radiographic processing method on the radiographic density of two types of film.  Radiographs from non-cavitated occlusal caries lesions obtained in a previous study were used. Methods: We analyzed 28 films from 12 patients that were obtained with the same X-ray device. Seven Ektaspeed (Kodak Eastman Kodak Co, Rochester, NY, USA) and seven Ultraspeed (Kodak Eastman Kodak Co) films were manually processed, while seven Ektaspeed and seven Ultraspeed films were automatically processed. The angle of incidence of the X-ray beam and the distances between the apparatus, the tooth and the film were standardized. Therefore, the study comprised four groups: GE1: Ektaspeed manually processed; GE2: Ektaspeed automatically processed; GU1: Ultraspeed manually processed; and GU2: Ultraspeed automatically processed. The images were digitized (G40450 Scan Jet C/T, Hewlett-Packard) and analyzed using Digora for Windows 2.7 (Soredex Medical Systems) to obtain the average radiographic density, and the data were analyzed using the Student’s t test for paired data (Bioestat 5.3).  Results: Only the Ektaspeed film showed statistically significant differences between radiographic densities with different processing methods (p = 0.0037).  Conclusions: The Ektaspeed film automatic pocessed is better suited for the early diagnosis of caries lesions. 

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Author Biography

  • Maria Aparecida Alves de Cerqueira Luz, Associated Professor, Operative Dentistry Department, School of Dentistry, University of São Paulo, SP
    Dentística Restauradora

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Published

2015-12-31

Issue

Section

Original Research