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Reliability of a paralleling instrument for dental radiographs

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Published in Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology. 1995, vol. 80, no. 3, p. 358-364
Abstract The reliability of a paralleling instrument for dental radiographs was retrospectively evaluated in the course of a 6-month clinical study. The angular variation between successive exposures was precisely quantified. Ninety-one percent of the angular variations were below a 1.4 degree threshold, but some paired images were found unsuitable for quantitative analysis. A mathematic procedure to assess the global angular projection error of any similar coupled x-ray cone-film holder device is proposed. This mathematic procedure should be routinely used to check superimposability of serial radiographs before density quantification or subtraction.
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PMID: 7489281
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DUBREZ, Bertrand, JACOT-DESCOMBES, Sabrina, CIMASONI, Giorgio. Reliability of a paralleling instrument for dental radiographs. In: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology and Endodontology, 1995, vol. 80, n° 3, p. 358-364. https://archive-ouverte.unige.ch/unige:47443

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Deposited on : 2015-03-03

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