Portland Community College | Portland, Oregon Portland Community College

CCOG for DA 120 Winter 2024

View archive version »
Course Number:
DA 120
Course Title:
Dental Radiology I
Credit Hours:
2
Lecture Hours:
20
Lecture/Lab Hours:
0
Lab Hours:
0

Course Description

Introduces the uses of digital and film radiographic images in dentistry. Includes the history of radiation discovery, biological effects of X-ray in tissues, and safety principles. Covers the physical and chemical properties of processing chemicals and film. Prerequisites: Acceptance in the Dental Assisting program. Corequisites: DA 121.

Intended Outcomes for the course

Upon completion of the course students should be able to:

  • Describe the techniques of digitally exposing images on manikins in a safe and effective manner.
  • Describe the techniques of digitally exposing images on patients in a safe and effective manner.
  • Identify the steps required to expose, process and mount a full-mouth series of radiographs.
  • Explain proper infection control protocols.

Course Activities and Design

This course will be presented in a series of lectures, videos, and class discussions, followed by practical application of principles in the laboratory. 

Outcome Assessment Strategies

  • Quizzes
  • Midterm
  • Assignments
  • Final exam
  • Professional standards of expected behavior in the classroom and laboratories 

Course Content (Themes, Concepts, Issues and Skills)

  • History of radiography
  • Uses in dentistry
  • Physical properties of x-radiation
  • Generation of x-rays
  • Parts of the x-ray machine
  • Use of the manikin
  • Intraoral film
  • Intraoral sensors
  • Safety protocols and radiation safety equipment
  • Intraoral exposure techniques
  • Exposure factors
  • Characteristics of a diagnostic radiograph/image
  • Darkroom equipment and solutions
  • Manual film processing
  • Exposure and processing errors
  • Mounting radiographs
  • Introduction to radiographic landmarks
  • Record-keeping
  • Digital radiography
     

COMPETENCIES:

  • Explain the origins of radiography and discuss the impact on medicine and the people using xrays
  • Describe the physical properties of x-radiation and how it interacts with matter
  • Describe the components and processes which generate and control x-radiation
  • Define the parts of the x-ray machine
  • Describe the characteristics of a variety of sizes and types of x-ray film including recommended storage methods
  • Describe and use safety protocols and equipment which are required by law
  • Explain the paralleling technique of intraoral exposure on a manikin using various types of film holders
  • Explain the characteristics of a diagnostic dental radiograph/image 
  • Describe the equipment and solutions found in the darkroom
  • Describe the steps in film processing, and explain the effects of time and temperature on the quality of the image
  • Understand the correct sequences to place films/images in the mount for use in diagnosis
  • Identify normal radiographic anatomical landmarks and normal oral conditions on radiographs/images at an introductory level
  • Identify processing errors and explain how to correct them
  • Record patient data as required for image identification and industry standards
  • Understand how to use digital sensors
     

Related Instruction

Computation
Hours: 6

  • Describe the techniques of digitally exposing images on manikins in a safe and effective manner.
  • Describe the techniques of digitally exposing images on patients in a safe and effective manner.

  • Describe and demonstrate the Inverse Square Law.
  • Describe and demonstrate the Maximum Permissible Dose.
  • Describe and demonstrate how to use the correct settings for impulses, milliamperes, kilovolt peak in radiography.