quality assurance in dental radiography chapter 19
TRANSCRIPT
Quality Assurance in Dental Radiography
Chapter 19
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Objectives Define the key words Explain the relationship between quality
assurance and quality control List the steps of a quality assurance program Explain the role a competent radiographer
plays in quality assurance List the four objectives of quality control tests
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Objectives Make a step-wedge with cardboard and lead
foil and demonstrate how to use it List two tests the radiographer can use to
monitor a dental x-ray machine Explain the use of the coin test to monitor
darkroom safelighting Describe how to test for light leaks in the
darkroom
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Objectives Explain the use of a reference film to test
processing chemistry Explain the use of the fresh-film test to
monitor the quality of a box of film Describe quality control tests for radiographic
viewing equipment Advocate the use of quality assurance to
produce diagnostic-quality radiographs with minimal radiation exposure
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Introduction Quality assurance is defined as the
planning, implementation, and evaluation of procedures used to produce high-quality radiographs with maximum diagnostic information (yield) while minimizing radiation exposure.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Introduction Establishing a quality control program for
radiographic procedures helps to increase the quality of radiographs produced and decrease the incidence of retake radiographs.
Quality assurance includes both quality administration procedures and quality control techniques.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
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Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Quality Administration Procedures Needs assessment Written plan Authority and responsibilities Monitoring and maintenance schedules Log and periodic evaluation
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Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
TABLE 19-2 Suggested Time Intervals forPerforming Quality Control Tests
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Competence of the Radiographer Essential to a quality assurance program is
the ability of the radiographer. Retakes result in unnecessary radiation
exposure to the patient and lost time for both the patient and the practice.
The radiographer must be competent not only in exposing, processing, and mounting dental radiographs, but also in identifying when errors occur.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Quality Control The objectives of quality control include:
Maintain a high standard of image quality. Identify problems before image quality is
compromised. Keep patient and occupational exposures to a
minimum. Reduce the occurrence of retake radiographs.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Quality Control Dental x-ray machine monitoring Darkroom monitoring Processing system monitoring X-ray film monitoring
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
BOX 19-1 Quality Control Tests for Dental X-ray Machines
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
PROCEDURE 19-1Assembling a step-wedge
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Figure 19-1 Step-wedge. (A) Commercially made step-wedge. (B) Step-wedge made from discarded sheets of lead foil from intraoral film packets.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Figure 19-2 Sketch of a step-wedge. A step-wedge is useful in making visual comparisons for quality control.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
PROCEDURE 19-2 Procedure for x-ray machine output consistency test
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Figure 19-3 Correct position of tube head when not in use. Extension arm folded, tube head and PID aimed at the floor.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
PROCEDURE 19-3Coin test for safelight adequacy
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Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
PROCEDURE 19-4Reference film to monitor processing solutions
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Figure 19-4 Dental radiographic quality control device. Available from x-ray QC [formerly Dental Radiographic Devices], www.xrayqc.com.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Review: Chapter Summary Quality assurance is defined as the
planning, implementation, and evaluation of procedures used to produce high-quality radiographs with maximum diagnostic information (yield) while minimizing radiation exposure.
Quality assurance includes both quality administration procedures and quality control techniques.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Review: Chapter Summary The five steps to a quality administration
program are (1) assess needs, (2) develop a written plan, (3) assign authority and responsibilities, (4) develop monitoring and maintenance schedules, and (5) use a log and evaluations to check on the program.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Review: Chapter Summary The key to producing the highest quality
diagnostic radiographs with the lowest possible radiation exposure is operator competence.
Quality control is defined as a series of tests to ensure that the radiographic system is functioning properly and that the radiographs produced are of an acceptable level of quality.
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Recall: Study Questions General Chapter Review
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Reflect: Case Study The practice where you work needs to update
their radiographic quality control plan. Currently the basic plan mentions the need to test the x-ray machine and monitor the darkroom and processing systems. Applying what you have learned in this chapter, develop a quality control plan for your practice. Include the following:
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Reflect: Case Study
1. List of equipment you think the practice should be testing
2. The name of the test needed3. Recommended time interval for performing
the test4. Name of the person assigned to perform the
test
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Reflect: Case Study
5. A description of what a failed test and a successful test would look like
6. The action required if a failed test results
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Reflect: Case Study
Then prepare the following documents that your practice would use to assist the quality assurance plan:1.A detailed, step-by-step procedure that someone could follow to perform each of the tests you have recommended2.Forms to keep a log of the outcomes for each of the tests you recommended
Copyright ©2012 by Pearson Education, Inc.All rights reserved.
Essentials of Dental Radiography for Dental Assistants and Hygienists, Ninth EditionEvelyn M. Thomson • Orlen N. Johnson
Relate: Laboratory Application Proceed to Chapter 19, Laboratory
Application, to complete this activity.