DNA 134


Division:        Arts and Sciences                                                                                                   Date:  January 2014


Curricula in Which Course is Taught:              Dental Assisting


Course Number and Title:           DNA 134  Dental Radiology and Practicum


Credit Hours:           3          Hours/Wk Lecture:  2          Hours/Wk Lab:       3           Lec/Lab Comb:      5



I.              Catalog Description:   Studies the physics of dental radiation and safety, equipment operation, cone placement for the parallel and bisection techniques, panoramic exposures, mounting, film processing, digital radiographs, and intraoral projections.


II.            Relationship of the course to curricula objectives in which it is taught:   Prepares the student to obtain Virginia Radiation Safety Certification in order to take radiographs needed for dental procedures   


III.           Required background:    DNA 100, DNA 103, DNA 109, and DNA 113                      


IV.          Course Content


a.    Introduction to Dental Radiography

b.    X-ray Properties and Generation

c.    Radiation Biology and Protection

d.    Image Characteristics

e.    Technique and Troubleshooting

f.     Panaromic Radiographs

g.    Film Processing/Quality Assurance

h.    Patient Management

i.      Film Interpretation Normal and Abnormal

j.      Digital Radiographs and Intraoral Projections


V.           Learner Outcomes

                  The student will:


a.    Explain the history of radiation

b.    List the properties of radiation

c.    Explain the biological effects of radiation exposure

d.    Identify components of the x-ray unit and the functions

e.    Describe radiation safety precautions

f.     Explain how an x-ray is produced

g.    Describe the composition, sizes, types, and storage of dental film

h.    Identify means of producing quality radiographs

i.      Explain bisecting and paralleling techniques

j.      List exposure errors

k.    Describe the steps in processing, composition of solutions and storage of radiographs

l.      Explain mounting procedures

m.   Identify extraoral films and describe exposing techniques

n.    Identify normal and abnormal landmarks

o.    List standardized procedures and state policies that offices follow to ensure quality films

p.    Identify imaging systems used for dental purposes.

q.    Expose, process, and mount radiographs


VI.          Evaluation


Students will be evaluated using some combination of quizzes, essays, written assignments, tests, lab competencies, or special projects as determined by the faculty.


Students will take the Virginia Radiation Safety Certification exam.


All written assignments will be assessed for spelling, punctuation, grammar, and consistency according to the conventions of Standard English.


VII.         This course supports the following objectives:


DCC Educational Objectives:


Critical Thinking

Cultural and Social Understanding

Information Literacy

Personal Development

Quantitative Reasoning

            Scientific Reasoning