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May 30, 2026
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DHYG 272 Dental Imaging I (2 credits)
Prerequisite Current enrollment in the Bachelor of Applied Science in Dental Hygiene program.
Course Description
An introductory course in dental radiology. Includes the history and principles of dental radiology, study of biological effects and patient safety, recommendations for dental radiographic examinations, and digital intra-oral dental radiographic techniques.
Course Content
1. Radiology History
2. Fundamentals of Dental Radiology
2. Dental Radiation
3. Dental Radiographic Examinations
4. Dental Imaging
5. Radiographic Indications
Student Outcomes
1. Describe the history of dental radiology.
2. Explain the physical principles and biological effects involved in the production and clinical use of radiation (radiobiological health).
3. Consistently and accurately describe and employ maximum radiation safety and asepsis procedures.
4. Using the American Dental Association’s (ADA guidelines) for dental radiographic examinations, accurately determine and recommend a patient’s dental radiographic examination needs.
5. Describe the various factors which influence density, contrast, definition and distortion of radiographic images.
6. Explain the difference between interpretation and diagnosis and the roles of dental personnel in each.
7. Consistently demonstrate accurate evaluation of intra-oral dental radiographs.
8. Accurately describe and identify the image characteristics of diagnostic radiographs.
9. Demonstrate correct techniques to create diagnostic bite-wing, periapical, full-mouth radiographic, and panoramic surveys using aseptic protocol.
10. Explain the principles of shadow-casting in relationship to the paralleling technique.
11. Correctly and consistently demonstrate use of dental imaging software in computer patient management systems by exposing, evaluating, recording, interpreting and storing digital radiographs.
12. Identify digital intra-oral technique errors and demonstrate correction and prevention of these errors.
Degree Outcomes
PROGRAM OUTCOME:
This course is part of the Bachelor of Applied Science in Dental Hygiene Degree. Please refer to the Dental Hygiene Competency Map for detail of the Program Competencies this course addresses. Each competency is identified at a level of skill by the terms Introductory (I), Developing (D), or Competent (C). The map also shows the alignment between each Program Competency and the Pierce College Core Abilities.
CORE ABILITIES OUTCOMES:
Information Competency
Graduates will be able to seek, find, evaluate and use information and employ information technology to engage in lifelong learning.
Critical, Creative and Reflective Thinking
Graduates will be able to question, search for answers and meaning, and develop ideas that lead to action.
Responsibility
Graduates will be able to respond by examining the relationship between self, community, and environments, evaluating potential
impacts and consequences of actions, and making choices and contributions based on that examination and evaluation.
Lecture Contact Hours 10
Lab Contact Hours 20
Clinical Contact Hours 0
Total Contact Hours 30
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