ASTM-E2670 2009

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E2670-09 Standard Test Method for Objective Quantification of Dental Plaque Using Digital Still Cameras

Published By	Publication Date	Number of Pages
ASTM	2009	11

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Categories: 11.060.01 - Dentistry in general, ASTM

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Description

1.1 This method covers the procedure, instrumental requirements, standardization procedures, material standards, measurement procedures, and parameters necessary to make precise measurements of dental plaque on the teeth revealed by fluorescence. In particular it is meant to measure the amount of plaque and plaque coverage on human teeth.

1.2 Digital images are used to measure the coverage of dental plaque on the teeth using discrimination analysis. All localized discoloration, such as stains, inclusions, pigmentations, etc., may be separated from the measurement and the analysis. All other non-relevant parts, such as teeth, tongue, spaces, dental restorations or prostheses, etc., must be separated from the measurement and the analysis.

Note 1This procedure may not be applicable for all types of dental work.

1.3 The broadband reflectance factors of the teeth and surrounding tissue are measured. The colorimetric measurement is performed using an illuminator system that provides controlled illumination on the teeth and surrounding tissue. A Digital Still Camera (DSC) is used to capture the digital image.

1.4 Data acquired using this method may be used to assess personal plaque coverage for the purposes of identifying overall health status, health status at specific sites in the mouth, or to track changes in personal health status for individuals over time. Pooled data may be used to assess plaque coverage, health, disease among populations in epidemiological surveys, evaluation of comparative product efficacy, or safety and treatment response in clinical trials involving plaque coverage or disease.

1.5 The apparatus, measurement procedure, and analysis technique described herein are generic. The intent is not to exclude a specific apparatus, measurement procedure, or analysis technique.

1.6 The values stated in SI units are to be regarded as standard. The values in parenthesis are for information only.

1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

PDF Catalog

PDF Pages	PDF Title
1	Scope
2	Referenced Documents Terminology Summary of Test Method Significance and Use
3	Interferences Apparatus FIG. 1 FIG. 2 FIG. 3
4	Sampling, Test Specimens, and Test Units FIG. 4
5	Preparation of Apparatus FIG. 5
6	Conditioning Calibration and Standardization FIG. 6
7	Procedure Interpretation of Results Report
8	Precision and Bias Keywords
9	A1. DIGITAL CAMERA SYSTEM COMPONENTS, GEOMETRY, AND NOMENCLATURE ILLUSTRATIONS A1.1 DSC System Geometry (Coordinate System) and Angular Convention A1.2 Diagram for a Typical Digital Still Camera Based Colorimeter FIG. A1.1 FIG. A1.2
10	A1.3 Diagram for a Typical Illumination Unit A1.4 Typical Block Diagram for Detector Optical Elements FIG. A1.3 FIG. A1.4
11	A1.5 Nomenclature and Identification of Teeth A1.6 Digital Still Camera System Geometry FIG. A1.5 FIG. A1.6

Additional information

Standard Title	E2670-09 Standard Test Method for Objective Quantification of Dental Plaque Using Digital Still Cameras
Published Code	ASTM
Publication Date	2009
Pages Count	11
ICS Codes	11.060.01 - Dentistry in general

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ASTM-E2670 2009

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