DRC Case Analysis & Practical Application 3

Question 1

A patient's panoramic radiograph reveals a well-defined multilocular radiolucency in the posterior mandible with a 'soap bubble' appearance. The patient is 25 years old. What is the most likely diagnosis?

Accepted Answer

Ameloblastoma

Answer

Ameloblastoma classically presents as a multilocular 'soap bubble' or 'honeycomb' radiolucency in the posterior mandible of young adults.

Question 2

When positioning a patient for a mandibular periapical radiograph using the bisecting angle technique, the vertical angulation should be directed:

Accepted Answer

-15 degrees

Answer

The mandibular anterior region requires a negative vertical angulation of approximately -15 to -20 degrees in the bisecting angle technique to bisect the angle between the tooth and film.

Question 3

A 35-year-old patient's radiograph shows calcified deposits within the pulp chamber of tooth #19 that completely obliterate the chamber. The tooth tests vital. This finding is BEST described as:

Accepted Answer

Pulp canal obliteration

Answer

Pulp canal obliteration (calcific metamorphosis) results in progressive calcification that fills the pulp chamber, often following trauma, while the tooth remains vital.

Question 4

During a panoramic examination, a patient with a high palatal vault causes the hard palate shadow to be superimposed over which structure on the radiograph?

Accepted Answer

Maxillary anterior tooth roots

Answer

A high palatal vault projects the hard palate shadow over the apices of the maxillary anterior teeth, potentially obscuring pathology.

Question 5

Radiographs of a 55-year-old patient show generalized increased radiopacity of the alveolar bone with a 'ground glass' pattern and expansion of the maxilla. Which systemic condition is most likely?

Accepted Answer

Fibrous dysplasia

Answer

Fibrous dysplasia produces a characteristic ground-glass radiographic appearance with bone expansion, commonly affecting the maxilla.

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

DRC Case Analysis & Practical Application 3