Guide
1. Radiographic description of This is the cheek bone! It is a radiopaque landmark over the
Zygoma maxillary molars.
2. Radiographic description of This is the extremely radiopaque "U" shaped landmark located
Zygomatic Process at the apices of the first and second maxillary molars
3. Radiographic description of radiolucent landmark located at the apices of the mandibular
the mental foramen premolars.
4. Radiographic description of a this is a cyst that is located between the roots of two teeth. It
lateral periodontal cyst can be confused with the mental foramen. But it will not be
located at the apices.
5. Ameloblastoma 1. Usually multilocular radiolucency
2. Usually posterior mandible
, Dental Hygiene Prometric Practice Tests 2025-2026
Guide
3. Soap bubble-like appearance
4. High recurrent rate
6. Taurodontism molar teeth that have expanded pulp cavities and fused roots
7. Concrescence Union of teeth by cementum
8. 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
9. internal oblique ridge A radiopaque band that extends downward and forward from
the ramus
, Dental Hygiene Prometric Practice Tests 2025-2026
Guide
When both appear, the external oblique ridge is superior to the
internal oblique ridge
10. What is the panoramic radi- Third molars
ograph used for? cysts
tumors
11. How old is a patient with their 6 years
first permanent molar pre-
sent?
12. How old is a child when their 10-12 years
permanent premolars begin
to erupt into their mouth
13. How old is a child when their 7-8 years (central)
maxillary centrals erupt? Lat- 8-9 years (lateral)
erals?
14. What tooth replaces Letter K? #20
Premolars replace the first and second primary molars.
15. How old is a child when their 9-10 years
lower canines erupt?
16. What does the mesenchyme Dentin, Pulp, and cementum
cells give rise too?
17. Oligodontia having 6 or MORE congenitally missing teeth