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ADEX Restorative Dentistry Practice
Exam 2026 | 100 Advanced Questions &
Answers with Detailed Rationales |
ADEX Dental Licensing Exam Prep &
Study Guide
1. A mandibular first molar has a deep occlusal carious lesion approaching the
pulp. The tooth is asymptomatic, responds normally to cold, and there is no
periapical pathology. During caries removal, a small pulpal exposure occurs.
Which finding most strongly supports attempting vital pulp therapy rather
than immediate endodontic treatment?
A. Spontaneous lingering pain
B. Necrotic pulp tissue
C. Controlled bleeding from healthy-appearing pulp tissue
D. Periapical radiolucency
Answer: Controlled bleeding from healthy-appearing pulp tissue
Rationale: Controlled hemorrhage from vital, healthy-appearing pulp is
compatible with maintaining pulp vitality when the clinical diagnosis and
,isolation are appropriate. Spontaneous lingering pain, necrosis, and periapical
disease suggest more advanced pulpal pathology.
2. When preparing a posterior composite resin restoration, which factor has
the greatest influence on reducing polymerization-shrinkage stress at the
bonded interface?
A. Increasing the C-factor
B. Incremental placement with appropriate curing
C. Eliminating adhesive application
D. Using a single large bulk increment in every situation
Answer: Incremental placement with appropriate curing
Rationale: Incremental placement can reduce the effective bonded volume and
allow better light penetration and adaptation. Polymerization shrinkage itself
cannot be eliminated, but its clinical consequences can be managed through
material selection, cavity design, adhesion, and placement technique.
3. A patient has a deep Class II composite restoration with postoperative
sensitivity primarily when biting. The radiograph shows no obvious
recurrent caries or periapical pathology. Which technical problem should
be evaluated first?
A. Excessive fluoride exposure
B. Occlusal interference
C. Inadequate tooth whitening
D. Excessive saliva flow
Answer: Occlusal interference
Rationale: Pain on biting shortly after restoration placement can result from a
high occlusal contact. Occlusal evaluation should be performed before assuming
pulpal disease, particularly when symptoms are closely associated with
mastication.
, 4. Which matrix system generally provides the most predictable proximal
contour for a posterior Class II composite restoration?
A. Circumferential metal matrix used without wedging
B. Sectional matrix with separation ring and wedge
C. Mylar strip
D. Cotton roll alone
Answer: Sectional matrix with separation ring and wedge
Rationale: A properly positioned sectional matrix combined with a wedge and
separation ring can create a tight proximal contact and anatomical emergence
profile. Matrix adaptation and stabilization are critical to preventing overhangs
and open contacts.
5. A maxillary premolar requires a large MOD restoration with substantial loss
of cuspal structure. Which restorative approach is generally most
appropriate when sufficient tooth structure remains for adhesive bonding?
A. Small occlusal amalgam only
B. Direct composite placed without cusp protection
C. Adhesive indirect restoration with appropriate cuspal coverage
D. No restoration until symptoms develop
Answer: Adhesive indirect restoration with appropriate cuspal coverage
Rationale: Extensive posterior restorations with weakened cusps may benefit
from cuspal coverage. An adhesive indirect restoration can provide structural
reinforcement while preserving additional tooth structure when the case is
appropriately selected.
6. Which substrate presents the greatest challenge for predictable adhesive
bonding?
A. Sound enamel
B. Superficial dentin
, C. Deep, moist dentin near the pulp
D. Etched enamel
Answer: Deep, moist dentin near the pulp
Rationale: Deep dentin has greater tubule density and fluid movement, making
moisture control and hybrid-layer formation more challenging. Enamel
generally provides a more predictable bonding substrate because of its highly
mineralized structure.
7. During placement of a Class II composite, the contact is open after removal
of the matrix. Which modification would most directly address the problem
in the next attempt?
A. Eliminate the wedge
B. Use a properly adapted sectional matrix and separation ring
C. Increase etching time indefinitely
D. Avoid curing the proximal increment
Answer: Use a properly adapted sectional matrix and separation ring
Rationale: Proximal contact depends primarily on matrix contour, tooth
separation, and adaptation. A sectional matrix system can provide a more
anatomical contour and compensate for polymerization-related dimensional
changes.
8. A patient presents with a noncarious cervical lesion and significant
sensitivity. Which restorative material is generally advantageous when the
restoration must tolerate flexure and bond to dentin/cementum?
A. Conventional feldspathic porcelain
B. Resin-modified glass ionomer
C. Pure gold foil
D. Zinc phosphate cement alone
Answer: Resin-modified glass ionomer
ADEX Restorative Dentistry Practice
Exam 2026 | 100 Advanced Questions &
Answers with Detailed Rationales |
ADEX Dental Licensing Exam Prep &
Study Guide
1. A mandibular first molar has a deep occlusal carious lesion approaching the
pulp. The tooth is asymptomatic, responds normally to cold, and there is no
periapical pathology. During caries removal, a small pulpal exposure occurs.
Which finding most strongly supports attempting vital pulp therapy rather
than immediate endodontic treatment?
A. Spontaneous lingering pain
B. Necrotic pulp tissue
C. Controlled bleeding from healthy-appearing pulp tissue
D. Periapical radiolucency
Answer: Controlled bleeding from healthy-appearing pulp tissue
Rationale: Controlled hemorrhage from vital, healthy-appearing pulp is
compatible with maintaining pulp vitality when the clinical diagnosis and
,isolation are appropriate. Spontaneous lingering pain, necrosis, and periapical
disease suggest more advanced pulpal pathology.
2. When preparing a posterior composite resin restoration, which factor has
the greatest influence on reducing polymerization-shrinkage stress at the
bonded interface?
A. Increasing the C-factor
B. Incremental placement with appropriate curing
C. Eliminating adhesive application
D. Using a single large bulk increment in every situation
Answer: Incremental placement with appropriate curing
Rationale: Incremental placement can reduce the effective bonded volume and
allow better light penetration and adaptation. Polymerization shrinkage itself
cannot be eliminated, but its clinical consequences can be managed through
material selection, cavity design, adhesion, and placement technique.
3. A patient has a deep Class II composite restoration with postoperative
sensitivity primarily when biting. The radiograph shows no obvious
recurrent caries or periapical pathology. Which technical problem should
be evaluated first?
A. Excessive fluoride exposure
B. Occlusal interference
C. Inadequate tooth whitening
D. Excessive saliva flow
Answer: Occlusal interference
Rationale: Pain on biting shortly after restoration placement can result from a
high occlusal contact. Occlusal evaluation should be performed before assuming
pulpal disease, particularly when symptoms are closely associated with
mastication.
, 4. Which matrix system generally provides the most predictable proximal
contour for a posterior Class II composite restoration?
A. Circumferential metal matrix used without wedging
B. Sectional matrix with separation ring and wedge
C. Mylar strip
D. Cotton roll alone
Answer: Sectional matrix with separation ring and wedge
Rationale: A properly positioned sectional matrix combined with a wedge and
separation ring can create a tight proximal contact and anatomical emergence
profile. Matrix adaptation and stabilization are critical to preventing overhangs
and open contacts.
5. A maxillary premolar requires a large MOD restoration with substantial loss
of cuspal structure. Which restorative approach is generally most
appropriate when sufficient tooth structure remains for adhesive bonding?
A. Small occlusal amalgam only
B. Direct composite placed without cusp protection
C. Adhesive indirect restoration with appropriate cuspal coverage
D. No restoration until symptoms develop
Answer: Adhesive indirect restoration with appropriate cuspal coverage
Rationale: Extensive posterior restorations with weakened cusps may benefit
from cuspal coverage. An adhesive indirect restoration can provide structural
reinforcement while preserving additional tooth structure when the case is
appropriately selected.
6. Which substrate presents the greatest challenge for predictable adhesive
bonding?
A. Sound enamel
B. Superficial dentin
, C. Deep, moist dentin near the pulp
D. Etched enamel
Answer: Deep, moist dentin near the pulp
Rationale: Deep dentin has greater tubule density and fluid movement, making
moisture control and hybrid-layer formation more challenging. Enamel
generally provides a more predictable bonding substrate because of its highly
mineralized structure.
7. During placement of a Class II composite, the contact is open after removal
of the matrix. Which modification would most directly address the problem
in the next attempt?
A. Eliminate the wedge
B. Use a properly adapted sectional matrix and separation ring
C. Increase etching time indefinitely
D. Avoid curing the proximal increment
Answer: Use a properly adapted sectional matrix and separation ring
Rationale: Proximal contact depends primarily on matrix contour, tooth
separation, and adaptation. A sectional matrix system can provide a more
anatomical contour and compensate for polymerization-related dimensional
changes.
8. A patient presents with a noncarious cervical lesion and significant
sensitivity. Which restorative material is generally advantageous when the
restoration must tolerate flexure and bond to dentin/cementum?
A. Conventional feldspathic porcelain
B. Resin-modified glass ionomer
C. Pure gold foil
D. Zinc phosphate cement alone
Answer: Resin-modified glass ionomer
