[HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
Question 1. **Which factor is most critical when selecting an abutment tooth for a fixed partial
denture according to Ante’s Law?**
A) Crown height
B) Root surface area
C) Periodontal health
D) Proximity to the opposing arch
Answer: C
Explanation: Ante’s Law emphasizes that the abutment must have sufficient periodontal support
to resist the forces transmitted by the prosthesis.
Question 2. **In a metal‑ceramic crown preparation, what is the ideal total occlusal reduction
to accommodate porcelain thickness?**
A) 0.5 mm
B) 1.0 mm
C) 1.5 mm
D) 2.0 mm
Answer: C
Explanation: Approximately 1.5 mm of occlusal reduction provides adequate space for porcelain
while maintaining strength of the metal substructure.
Question 3. **Which pontic design offers the best hygiene access while providing esthetic
support?**
A) Saddle
B) Ovate
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
C) Modified ridge‑lap
D) Conical
Answer: C
Explanation: Modified ridge‑lap pontics expose the tissue for cleaning and mimic natural
gingival contours.
Question 4. **When fabricating a provisional restoration for a long‑term interim, which material
provides the best balance of strength and ease of adjustment?**
A) Autopolymerizing acrylic resin
B) Bis‑acrylic composite
C) Polycarbonate crown formers
D) Zinc oxide‑eugenol paste
Answer: B
Explanation: Bis‑acrylic composites have higher fracture resistance than acrylics and can be
easily trimmed and polished.
Question 5. **According to the Kennedy classification, a patient missing all posterior teeth in
the maxilla but retaining all anterior teeth is classified as:**
A) Class I
B) Class II
C) Class III
D) Class IV
Answer: A
Explanation: Class I describes a bilateral edentulous area posterior to the remaining teeth.
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
Question 6. **Which Applegate rule dictates the minimum distance between a rest seat and the
adjacent tooth preparation margin?**
A) 1 mm
B) 1.5 mm
C) 2 mm
D) 2.5 mm
Answer: B
Explanation: Rest seats should be at least 1.5 mm away from the preparation margin to preserve
tooth structure.
Question 7. **In an RPD, the RPI clasp system is primarily used to:**
A] Provide retention on a distal extension
B] Reduce torque on the abutment tooth
C] Increase vertical support
D] Simplify laboratory procedures
Answer: B
Explanation: The RPI (Rest‑Plate‑I‑retainer) design directs forces along the long axis, minimizing
torque.
Question 8. **What is the most common alloy used for cobalt‑chromium RPD frameworks due
to its low density and high corrosion resistance?**
A) Ni‑Cr
B) Au‑Pd
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
C) Co‑Cr
D) Ti‑Al‑V
Answer: C
Explanation: Cobalt‑chromium alloys provide strength, low weight, and excellent
biocompatibility for removable frameworks.
Question 9. **During impression making for a complete denture, the primary impression should
be taken with:**
A) Polyvinyl siloxane (PVS) material
B) Hydrocolloid (alginate) material
C) Polyether material
D) Light‑cured resin
Answer: B
Explanation: Alginate is inexpensive, fluid, and captures the primary tissue anatomy needed for
a diagnostic cast.
Question 10. **Which anatomical landmark is essential when recording the maxillary cast
orientation using a face‑bow?**
A) Incisal papilla
B) External auditory meatus
C) Nasal spine
D) Zygomatic arch
Answer: B
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
Question 1. **Which factor is most critical when selecting an abutment tooth for a fixed partial
denture according to Ante’s Law?**
A) Crown height
B) Root surface area
C) Periodontal health
D) Proximity to the opposing arch
Answer: C
Explanation: Ante’s Law emphasizes that the abutment must have sufficient periodontal support
to resist the forces transmitted by the prosthesis.
Question 2. **In a metal‑ceramic crown preparation, what is the ideal total occlusal reduction
to accommodate porcelain thickness?**
A) 0.5 mm
B) 1.0 mm
C) 1.5 mm
D) 2.0 mm
Answer: C
Explanation: Approximately 1.5 mm of occlusal reduction provides adequate space for porcelain
while maintaining strength of the metal substructure.
Question 3. **Which pontic design offers the best hygiene access while providing esthetic
support?**
A) Saddle
B) Ovate
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
C) Modified ridge‑lap
D) Conical
Answer: C
Explanation: Modified ridge‑lap pontics expose the tissue for cleaning and mimic natural
gingival contours.
Question 4. **When fabricating a provisional restoration for a long‑term interim, which material
provides the best balance of strength and ease of adjustment?**
A) Autopolymerizing acrylic resin
B) Bis‑acrylic composite
C) Polycarbonate crown formers
D) Zinc oxide‑eugenol paste
Answer: B
Explanation: Bis‑acrylic composites have higher fracture resistance than acrylics and can be
easily trimmed and polished.
Question 5. **According to the Kennedy classification, a patient missing all posterior teeth in
the maxilla but retaining all anterior teeth is classified as:**
A) Class I
B) Class II
C) Class III
D) Class IV
Answer: A
Explanation: Class I describes a bilateral edentulous area posterior to the remaining teeth.
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
Question 6. **Which Applegate rule dictates the minimum distance between a rest seat and the
adjacent tooth preparation margin?**
A) 1 mm
B) 1.5 mm
C) 2 mm
D) 2.5 mm
Answer: B
Explanation: Rest seats should be at least 1.5 mm away from the preparation margin to preserve
tooth structure.
Question 7. **In an RPD, the RPI clasp system is primarily used to:**
A] Provide retention on a distal extension
B] Reduce torque on the abutment tooth
C] Increase vertical support
D] Simplify laboratory procedures
Answer: B
Explanation: The RPI (Rest‑Plate‑I‑retainer) design directs forces along the long axis, minimizing
torque.
Question 8. **What is the most common alloy used for cobalt‑chromium RPD frameworks due
to its low density and high corrosion resistance?**
A) Ni‑Cr
B) Au‑Pd
, [HAADProsthodontics] HAAD
Prosthodontics DOH Licensureination for
Specialist Prosthodontics Certification
Exam Guide
C) Co‑Cr
D) Ti‑Al‑V
Answer: C
Explanation: Cobalt‑chromium alloys provide strength, low weight, and excellent
biocompatibility for removable frameworks.
Question 9. **During impression making for a complete denture, the primary impression should
be taken with:**
A) Polyvinyl siloxane (PVS) material
B) Hydrocolloid (alginate) material
C) Polyether material
D) Light‑cured resin
Answer: B
Explanation: Alginate is inexpensive, fluid, and captures the primary tissue anatomy needed for
a diagnostic cast.
Question 10. **Which anatomical landmark is essential when recording the maxillary cast
orientation using a face‑bow?**
A) Incisal papilla
B) External auditory meatus
C) Nasal spine
D) Zygomatic arch
Answer: B
