AGD FELLOWSHIP EXAM QUESTIONS AND ANSWERS
Operative & Restorative Dentistry
1. A patient has a Class II amalgam restoration that needs replacement. You notice
the adjacent tooth has a small, active carious lesion on its distal surface. What is
the most conservative and appropriate treatment?
A) Place a new Class II amalgam on both teeth.
B) Restore the tooth in question, and monitor the adjacent lesion.
C) Place a sealant on the adjacent lesion.
D) Refer for a crown on the adjacent tooth.
Rationale: The most conservative approach is to restore the decayed tooth and
monitor the adjacent lesion for progression.
2. Which of the following is the most significant cause of postoperative sensitivity
in a new composite restoration?
A) Inadequate etching time
B) Polymerization shrinkage and subsequent microleakage
C) Use of a bonding agent
D) Placement in a high-stress area
Rationale: Polymerization shrinkage creates gaps between the composite and the
tooth, leading to fluid movement and sensitivity.
3. The primary advantage of using a rubber dam during restorative procedures is:
A) Improved patient comfort
B) Isolation and moisture control
C) Better visibility
D) Reduced chair time
Rationale: The rubber dam provides a clean, dry, and isolated operating field.
4. In preparing a tooth for a full-coverage crown, which margin type is most
conservative of tooth structure?
A) Chamfer
,B) Shoulder
C) Bevel
D) Feather-edge
Rationale: A chamfer margin removes the least amount of tooth structure while
providing adequate bulk for the crown material.
5. The main reason for using a liner or base under a deep restoration is to:
A) Protect the pulp from thermal and chemical irritation
B) Increase the retention of the restoration
C) Provide an aesthetic base
D) Strengthen the restoration
Rationale: Liners and bases act as a barrier to protect the pulp from irritants.
6. A patient presents with an amalgam tattoo. What is the treatment?
A) Surgical excision of the entire tattoo.
B) Observation; no treatment is typically necessary.
C) Bleaching the tooth.
D) Placing a porcelain veneer.
Rationale: An amalgam tattoo is a benign discoloration caused by embedded
amalgam particles. It's usually harmless and requires no treatment.
7. During composite placement, the "incremental technique" is used primarily to:
A) Speed up the procedure
B) Reduce polymerization shrinkage stress
C) Improve the color match
D) Increase the polishability
Rationale: Placing composite in small increments reduces the bulk of material
shrinking at once.
8. For an anterior tooth requiring a Class IV restoration, the most important
aesthetic property of the composite is:
A) Flexural strength
B) Translucency and value (shade)
C) Radiopacity
D) Low surface tension
, Rationale: The translucency of the incisal edge and the value of the tooth are
crucial for an aesthetic match.
9. The ideal restorative material for a primary tooth with extensive caries is:
A) Composite resin
B) Stainless steel crown
C) Amalgam
D) Glass ionomer
Rationale: A stainless steel crown is the restoration of choice for large lesions in
primary teeth as it protects the tooth completely.
10. Which of the following is a common cause of premature failure of a porcelain-
fused-to-metal (PFM) crown?
A) Inadequate porcelain thickness
B) Use of a precious metal alloy
C) Over-contouring
D) Placement of a good margin
Rationale: Inadequate porcelain thickness at critical points can lead to fracture.
Periodontics (Q11-18)
11. A patient presents with gingival enlargement that is firm and fibrous. Which
medication is most likely responsible?
A) Nifedipine
B) Phenytoin
C) Amlodipine
D) Cyclosporine
Rationale: Phenytoin is a known cause of gingival hyperplasia.
12. In a patient with chronic periodontitis, the initial treatment phase should
include:
A) Scaling and root planing
B) Periodontal surgery
C) Systemic antibiotics
Operative & Restorative Dentistry
1. A patient has a Class II amalgam restoration that needs replacement. You notice
the adjacent tooth has a small, active carious lesion on its distal surface. What is
the most conservative and appropriate treatment?
A) Place a new Class II amalgam on both teeth.
B) Restore the tooth in question, and monitor the adjacent lesion.
C) Place a sealant on the adjacent lesion.
D) Refer for a crown on the adjacent tooth.
Rationale: The most conservative approach is to restore the decayed tooth and
monitor the adjacent lesion for progression.
2. Which of the following is the most significant cause of postoperative sensitivity
in a new composite restoration?
A) Inadequate etching time
B) Polymerization shrinkage and subsequent microleakage
C) Use of a bonding agent
D) Placement in a high-stress area
Rationale: Polymerization shrinkage creates gaps between the composite and the
tooth, leading to fluid movement and sensitivity.
3. The primary advantage of using a rubber dam during restorative procedures is:
A) Improved patient comfort
B) Isolation and moisture control
C) Better visibility
D) Reduced chair time
Rationale: The rubber dam provides a clean, dry, and isolated operating field.
4. In preparing a tooth for a full-coverage crown, which margin type is most
conservative of tooth structure?
A) Chamfer
,B) Shoulder
C) Bevel
D) Feather-edge
Rationale: A chamfer margin removes the least amount of tooth structure while
providing adequate bulk for the crown material.
5. The main reason for using a liner or base under a deep restoration is to:
A) Protect the pulp from thermal and chemical irritation
B) Increase the retention of the restoration
C) Provide an aesthetic base
D) Strengthen the restoration
Rationale: Liners and bases act as a barrier to protect the pulp from irritants.
6. A patient presents with an amalgam tattoo. What is the treatment?
A) Surgical excision of the entire tattoo.
B) Observation; no treatment is typically necessary.
C) Bleaching the tooth.
D) Placing a porcelain veneer.
Rationale: An amalgam tattoo is a benign discoloration caused by embedded
amalgam particles. It's usually harmless and requires no treatment.
7. During composite placement, the "incremental technique" is used primarily to:
A) Speed up the procedure
B) Reduce polymerization shrinkage stress
C) Improve the color match
D) Increase the polishability
Rationale: Placing composite in small increments reduces the bulk of material
shrinking at once.
8. For an anterior tooth requiring a Class IV restoration, the most important
aesthetic property of the composite is:
A) Flexural strength
B) Translucency and value (shade)
C) Radiopacity
D) Low surface tension
, Rationale: The translucency of the incisal edge and the value of the tooth are
crucial for an aesthetic match.
9. The ideal restorative material for a primary tooth with extensive caries is:
A) Composite resin
B) Stainless steel crown
C) Amalgam
D) Glass ionomer
Rationale: A stainless steel crown is the restoration of choice for large lesions in
primary teeth as it protects the tooth completely.
10. Which of the following is a common cause of premature failure of a porcelain-
fused-to-metal (PFM) crown?
A) Inadequate porcelain thickness
B) Use of a precious metal alloy
C) Over-contouring
D) Placement of a good margin
Rationale: Inadequate porcelain thickness at critical points can lead to fracture.
Periodontics (Q11-18)
11. A patient presents with gingival enlargement that is firm and fibrous. Which
medication is most likely responsible?
A) Nifedipine
B) Phenytoin
C) Amlodipine
D) Cyclosporine
Rationale: Phenytoin is a known cause of gingival hyperplasia.
12. In a patient with chronic periodontitis, the initial treatment phase should
include:
A) Scaling and root planing
B) Periodontal surgery
C) Systemic antibiotics
