Dental Hygiene Prometric Practice Exam Study Questions and Answers with Complete Solutions Graded A 2025-2026

Radiographic description of Zygoma
This is the cheek bone! It is a radiopaque landmark over the maxillary molars.
Radiographic description of Zygomatic Process
This is the extremely radiopaque "U" shaped landmark located at the apices of the first
and second maxillary molars
Radiographic description of the mental foramen
radiolucent landmark located at the apices of the mandibular premolars.
Radiographic description of a lateral periodontal cyst
this is a cyst that is located between the roots of two teeth. It can be confused with the
mental foramen. But it will not be located at the apices.
Ameloblastoma
1. Usually multilocular radiolucency
2. Usually posterior mandible
3. Soap bubble-like appearance
4. High recurrent rate
Taurodontism
molar teeth that have expanded pulp cavities and fused roots
Concrescence
Union of teeth by cementum
external oblique ridge
...A radiopaque band extending downward and forward from the anterior border of the
ramus of the mandible. the external oblique ridge is superior to the internal oblique ridge
internal oblique ridge
A radiopaque band that extends downward and forward from the ramus
When both appear, the external oblique ridge is superior to the internal oblique ridge