PMID: 11925545Apr 2, 2002Paper

A comparison of D-, E-, and F-speed conventional intraoral radiographic films in endodontic measurement

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
J Chris SheafferAllan G Farman

Abstract

We sought to compare observer measurement error and subjective ratings for International Standards Organization D-, E-, and F-speed direct exposure dental x-ray films used to determine endodontic working lengths. Radiographs were exposed to achieve a standard background density of approximately 2.0. Three human maxillary posterior teeth for which No. 10 K-files had been placed at various lengths within 4 canals were studied in a cadaver section. A total of 30 radiographs were used (10 from each film type). Five licensed dentists excluding all authors viewed the radiographs independently and in random sequence. Distances from the file tips to the radiographic apices were measured and were compared with known lengths for error determination. The observing dentists also subjectively rated the images as desirable or undesirable. Statistical methods included a 3-factor ANOVA with Tukey honestly significant difference post hoc analysis to compare objective measurements and chi-square with respect to subjective ratings. No significant differences were attributable to film speed grouping or observers (P > .05); however, there was a specimen effect in that a significant difference was found in measurement accuracy among the 4 canals (P ...Continue Reading

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Citations

Aug 18, 2004·Dento Maxillo Facial Radiology·M S CasanovaF Haiter-Neto
Apr 9, 2004·Dento Maxillo Facial Radiology·A KünzelJ Becker
Jul 20, 2010·International Endodontic Journal·I OrafiV E Rushton
Mar 18, 2005·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Gail A WoolhiserFrank E Pink
Aug 19, 2011·Journal of Endodontics·David L CloutierMary P Walker
Nov 23, 2005·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·Bun San Chong, Thomas R Pitt Ford
Oct 24, 2006·Journal of Endodontics·Andrew S HuttulaScott B McClanahan
Aug 23, 2006·Brazilian Dental Journal·Marcia Spinelli CasanovaSolange Maria de Almeida
Oct 17, 2003·Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics·J Chris SheafferAllan G Farman

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