OHIO EFDA BOARD EXAM QUESTIONS WITH Detailed
Answer Key For (2025|2026) Exam, A+ Solutions
At the occlusal and incisal surface - (ANSWER)In which area on the tooth is the
enamel thickest
Which tissue provides the defense and developmental functions of a tooth -
(ANSWER)Pulp
Rounded borders of enamel which form the mesial and distal of the occlusal
surface on posterior teeth, or mesial and distal of the lingual surface on interior
teeth are named........ - (ANSWER)Marginal ridges
Name the surface at the base of a classI cavity preparation - (ANSWER)Pulpal
floor
Which tooth has the longest root in the mouth? - (ANSWER)Maxillary
cuspid/canine
If present, the cusp of Carabelli is located on, which molar - (ANSWER)ML cusp
area of the maxillary, first molar
The fossa found in the central portion of a molar is named the ____________
fossa? - (ANSWER)Central
, Where is the cavosurface margin located? - (ANSWER)At the junction of the
cavity wall and the unprepared tooth structure
If the pulp receives an excessive stimulus, which type of dentin is formed in
response - (ANSWER)Reparative dentin
What is the correct classification of caries for a carious lesion that is located on
the proximal surface of tooth #8 - (ANSWER)Class III
In which direction does the oblique bridge travel across the occlusal surface of a
maxillary molar? - (ANSWER)Distobuccal to Mesiolingual DB/ML
What can cause pulpitis? - (ANSWER)Deep cavities into the dentin
High occlusion
Effects of cutting burs
Desiccation
Condensation pressure
Chemical irritation from restorative materials
Temperature changes
Dimensional changes
Lack of marginal seal
Answer Key For (2025|2026) Exam, A+ Solutions
At the occlusal and incisal surface - (ANSWER)In which area on the tooth is the
enamel thickest
Which tissue provides the defense and developmental functions of a tooth -
(ANSWER)Pulp
Rounded borders of enamel which form the mesial and distal of the occlusal
surface on posterior teeth, or mesial and distal of the lingual surface on interior
teeth are named........ - (ANSWER)Marginal ridges
Name the surface at the base of a classI cavity preparation - (ANSWER)Pulpal
floor
Which tooth has the longest root in the mouth? - (ANSWER)Maxillary
cuspid/canine
If present, the cusp of Carabelli is located on, which molar - (ANSWER)ML cusp
area of the maxillary, first molar
The fossa found in the central portion of a molar is named the ____________
fossa? - (ANSWER)Central
, Where is the cavosurface margin located? - (ANSWER)At the junction of the
cavity wall and the unprepared tooth structure
If the pulp receives an excessive stimulus, which type of dentin is formed in
response - (ANSWER)Reparative dentin
What is the correct classification of caries for a carious lesion that is located on
the proximal surface of tooth #8 - (ANSWER)Class III
In which direction does the oblique bridge travel across the occlusal surface of a
maxillary molar? - (ANSWER)Distobuccal to Mesiolingual DB/ML
What can cause pulpitis? - (ANSWER)Deep cavities into the dentin
High occlusion
Effects of cutting burs
Desiccation
Condensation pressure
Chemical irritation from restorative materials
Temperature changes
Dimensional changes
Lack of marginal seal
