EFDA OREGON ACTUAL EXAM SET 2026
COMPLETE QUESTIONS AND CORRECT
ANSWERS
◉ Reasons for Bases and Liners. Answer: To protect the pulp, aid in its
recovery, or both.
◉ Inflammation of the Pulp can be caused by the following. Answer: 1.
Caries
2. Traumatic Occlusion
3. Effect of Cutting Burs
4. Desiccation
5. Condensation Pressure
6. Chemical Irritation from Restorative Materials.
7. Temperature Changes
8. Dimensional Changes
9. Lack of Marginal Seal
◉ Glass Ionomers. Answer: Bonds directly to enamel, dentin,
cementum, and stainless steel. Releases fluoride. Ex: Vitrebond
,◉ Liners. Answer: Thin layers of material used to protect the pulp, aid in
its recovery, or both.
◉ IRM
(Intermediate Restorative Material). Answer: IRM material is zinc oxide
Eugenol with polymer reinforcement.
◉ Fermit. Answer: Most common for inlay/onlay preps. Will stick to
adjacent teeth. You can roll into a ball, put into prep, have patient bite
down. You want the material to stick to the adjacent teeth but not to the
papilla so always make sure to check and clean interproximal excess.
◉ Cavit. Answer: Temporary filling material that hermetically deals in
medicaments while sealing out saliva. Most common in Endo (Root
Canal) procedures.
◉ Acrylic. Answer: Ideal for all temporary restorations. Ex: squash
method
◉ Examples of Temp Materials. Answer: IRM/ZOE
Fermit
EZ Temp
Cavit
Acrylic
,◉ Types of Dentin. Answer: Primary
Secondary
Tertiary
◉ Bases. Answer: Used in thicker amounts than liners to provide a
mechanical, chemical, and thermal protection to the pulp.
◉ Sealers. Answer: Also known as liners. Seal off openings at Dentinal
tubules to prevent pulp from getting irritated any further. Ex: Cavity
Varnish which is only used under amalgam)
◉ Zinc Phosphate. Answer: Can be used for cementation, insulating
base, also considered an insulator and reinforcer. Irritating to the pulp
◉ Pulpitis. Answer: Inflammation of the pulp. It can be irreversible if
caught early, but root canal treatment may be needed if too severe.
◉ Obtundants. Answer: Reduce the irritability of the pulp. Ex: ZOE
(Zinc Oxide Eugenol).
◉ Transverse Ridge. Answer: The Union of two triangular ridges.
, ◉ Triangular Ridge. Answer: Ridges that descend from the cusp tips into
the central part of occlusal surfaces. Found of molar and premolars.
◉ Marginal Ridge. Answer: Rounded borders of the enamel that form
the mesial and distal margins
◉ Ridge. Answer: A linear elevation on the surface of the tooth, named
according to its location.
◉ Cingulum. Answer: Lingual ridge at the base of an anterior tooth.
Makes up the bulk of the cervical 1/3 of the lingual surface.
◉ Cusp. Answer: Elevation in the crown of the tooth, making a division
in the occlusal surface.
◉ Anatomic Crown. Answer: Division of crown and tooth marked by
the CEJ subgingivally seen.
◉ Clinical Crown. Answer: Portion of crown visible to the eye upon
clinical examination. The part of the tooth you see when you look in the
mouth.
◉ Periodontium. Answer: Tissues that surround and support the teeth.
Consists of cementum, PDL, gingiva, and Alveolar process.
COMPLETE QUESTIONS AND CORRECT
ANSWERS
◉ Reasons for Bases and Liners. Answer: To protect the pulp, aid in its
recovery, or both.
◉ Inflammation of the Pulp can be caused by the following. Answer: 1.
Caries
2. Traumatic Occlusion
3. Effect of Cutting Burs
4. Desiccation
5. Condensation Pressure
6. Chemical Irritation from Restorative Materials.
7. Temperature Changes
8. Dimensional Changes
9. Lack of Marginal Seal
◉ Glass Ionomers. Answer: Bonds directly to enamel, dentin,
cementum, and stainless steel. Releases fluoride. Ex: Vitrebond
,◉ Liners. Answer: Thin layers of material used to protect the pulp, aid in
its recovery, or both.
◉ IRM
(Intermediate Restorative Material). Answer: IRM material is zinc oxide
Eugenol with polymer reinforcement.
◉ Fermit. Answer: Most common for inlay/onlay preps. Will stick to
adjacent teeth. You can roll into a ball, put into prep, have patient bite
down. You want the material to stick to the adjacent teeth but not to the
papilla so always make sure to check and clean interproximal excess.
◉ Cavit. Answer: Temporary filling material that hermetically deals in
medicaments while sealing out saliva. Most common in Endo (Root
Canal) procedures.
◉ Acrylic. Answer: Ideal for all temporary restorations. Ex: squash
method
◉ Examples of Temp Materials. Answer: IRM/ZOE
Fermit
EZ Temp
Cavit
Acrylic
,◉ Types of Dentin. Answer: Primary
Secondary
Tertiary
◉ Bases. Answer: Used in thicker amounts than liners to provide a
mechanical, chemical, and thermal protection to the pulp.
◉ Sealers. Answer: Also known as liners. Seal off openings at Dentinal
tubules to prevent pulp from getting irritated any further. Ex: Cavity
Varnish which is only used under amalgam)
◉ Zinc Phosphate. Answer: Can be used for cementation, insulating
base, also considered an insulator and reinforcer. Irritating to the pulp
◉ Pulpitis. Answer: Inflammation of the pulp. It can be irreversible if
caught early, but root canal treatment may be needed if too severe.
◉ Obtundants. Answer: Reduce the irritability of the pulp. Ex: ZOE
(Zinc Oxide Eugenol).
◉ Transverse Ridge. Answer: The Union of two triangular ridges.
, ◉ Triangular Ridge. Answer: Ridges that descend from the cusp tips into
the central part of occlusal surfaces. Found of molar and premolars.
◉ Marginal Ridge. Answer: Rounded borders of the enamel that form
the mesial and distal margins
◉ Ridge. Answer: A linear elevation on the surface of the tooth, named
according to its location.
◉ Cingulum. Answer: Lingual ridge at the base of an anterior tooth.
Makes up the bulk of the cervical 1/3 of the lingual surface.
◉ Cusp. Answer: Elevation in the crown of the tooth, making a division
in the occlusal surface.
◉ Anatomic Crown. Answer: Division of crown and tooth marked by
the CEJ subgingivally seen.
◉ Clinical Crown. Answer: Portion of crown visible to the eye upon
clinical examination. The part of the tooth you see when you look in the
mouth.
◉ Periodontium. Answer: Tissues that surround and support the teeth.
Consists of cementum, PDL, gingiva, and Alveolar process.
