Specific objectives

Question 1

1. Explain the history of radiography, identify the prominent contributors. (6)

Answer 1

1. Roentgen = discovered and named “x-rays” in 1895
2. otto walkoff = first prototype of a dental radiograph in 1896
3. Kells = may* have taken first dental* radiograph in US; promoted the use of radiography in dentistry in 1896; early advocate for radiation safety
4. Rollins = advocate for radiation safety 1901
5. Coolidge = hot cathode tube in 1913
6. Raper = wrote first dental xray textbook; introduced bitewings in 1925; safety pioneer

Question 2

2. List the uses of and explain the importance of dental radiographs in quality oral health care for the client (9)

Answer 2

a. Disease
b. Growth and development
c. Missing teeth
d. Orthodontia
e. Wisdom teeth
f. Pathology
g. Trauma
h. Documentation
i. Education

Question 3

3. Classify intraoral radiographs according to type of projection: bitewing

Answer 3

a. Bitewing= a single radiograph that captures the crown and alveolar crests of bone of the teeth on both the maxilla and mandible.
i. Useful in detecting caries of the proximal surfaces
ii. Examining crestal bone of patients with periodontal disease
iii. Horizontal or vertical technique

Question 4

3. Classify intraoral radiographs according to type of projection: periapical

Answer 4

b. Periapical = images the apices of the teeth and surrounding bone. (in a single arch)
i. Examine single image or in combination (FMS).
ii. Conditions that are exposed include: abscess, fractures, large carious lesions, extensive periodontal involvement, and examination of developmental anomalies (such as missing teeth and abnormal patterns, or unexplained pain or bleeding).
iii. Paralleling or bisecting technique