[HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
**Question 1.** Which of the following correctly describes the FDI two‑digit notation for a
permanent maxillary right first molar?
A) 16
B) 26
C) 36
D) 46
Answer: A
Explanation: In the FDI system the first digit denotes the quadrant (1 = maxillary right) and the
second digit the tooth position (6 = first molar).
**Question 2.** The primary function of the marginal ridge on a posterior tooth is to:
A) Provide a point of contact for occlusion
B) Protect the pulp chamber
C) Guide mandibular movements
D) Increase surface area for adhesive bonding
Answer: A
Explanation: The marginal ridge contacts the opposing tooth during centric occlusion, stabilizing
the bite.
**Question 3.** In static occlusion, the term “centric relation” refers to:
A) The most retruded mandibular position with tooth contact
B) The position of the mandible when the condyles are in the most anterior-superior position in
the glenoid fossa
C) The position of the mandible when the condyles are in the most superior‑anterior position in
the glenoid fossa with the teeth in maximum intercuspation
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
D) The position of the mandible when the condyles are in the most posterior‑inferior position in
the glenoid fossa
Answer: C
Explanation: Centric relation is a bone‑to‑bone relationship independent of tooth contact; it is
the most superior‑anterior condylar position.
**Question 4.** Which gypsum product provides the highest compressive strength for die
fabrication?
A) Type I plaster
B) Type II plaster
C) Type III stone (hydrocal)
D) Type IV high‑strength die stone
Answer: D
Explanation: Type IV die stone has a compressive strength of 13–16 MPa, ideal for precise die
work.
**Question 5.** The main advantage of using a baseplate wax in denture try‑in is:
A) High viscosity for easy carving
B) Low melting point allowing rapid removal
C) Superior hardness for polishing
D) Ability to bond chemically to acrylic resin
Answer: B
Explanation: Baseplate wax melts at low temperature, facilitating quick removal from the trial
denture.
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
**Question 6.** A high‑noble alloy typically contains at least what percentage of gold,
palladium, or platinum?
A) 10 %
B) 25 %
C) 40 %
D) 60 %
Answer: C
Explanation: High‑noble alloys must contain ≥ 40 % of noble metals (Au, Pd, Pt) to meet casting
standards.
**Question 7.** Which ceramic material is known for its high flexural strength and is commonly
milled for monolithic crowns?
A) Feldspathic porcelain
B) Lithium disilicate (e‑max)
C) Zirconia (Y‑TZP)
D) Alumina
Answer: C
Explanation: Y‑TZP zirconia offers flexural strength > 900 MPa and is suitable for monolithic
CAD/CAM crowns.
**Question 8.** The polymerization shrinkage of heat‑cured acrylic resin is approximately:
A) 0.2 %
B) 1 %
C) 3 %
D) 5 %
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
Answer: C
Explanation: Heat‑cured PMMA contracts about 2–3 % during polymerization, requiring careful
flasking.
**Question 9.** In a full‑metal crown, the minimum metal thickness required for adequate
strength is:
A) 0.5 mm
B) 0.75 mm
C) 1.0 mm
D) 1.5 mm
Answer: B
Explanation: A metal thickness of ≥ 0.75 mm provides sufficient rigidity for full‑metal
restorations.
**Question 10.** The “chamfer” finish line is most appropriate for which type of restoration?
A) All‑ceramic crown
B) Porcelain‑fused‑to‑metal crown
C) Full‑metal crown
D) Inlay/onlay
Answer: C
Explanation: Chamfer margins give adequate thickness for metal while preserving tooth
structure.
**Question 11.** When designing a cobalt‑chrome removable partial denture framework, the
minimum connector dimension for a major connector in the maxillary arch is:
Licensureination for Dental Technician
Certification Exam Guide
**Question 1.** Which of the following correctly describes the FDI two‑digit notation for a
permanent maxillary right first molar?
A) 16
B) 26
C) 36
D) 46
Answer: A
Explanation: In the FDI system the first digit denotes the quadrant (1 = maxillary right) and the
second digit the tooth position (6 = first molar).
**Question 2.** The primary function of the marginal ridge on a posterior tooth is to:
A) Provide a point of contact for occlusion
B) Protect the pulp chamber
C) Guide mandibular movements
D) Increase surface area for adhesive bonding
Answer: A
Explanation: The marginal ridge contacts the opposing tooth during centric occlusion, stabilizing
the bite.
**Question 3.** In static occlusion, the term “centric relation” refers to:
A) The most retruded mandibular position with tooth contact
B) The position of the mandible when the condyles are in the most anterior-superior position in
the glenoid fossa
C) The position of the mandible when the condyles are in the most superior‑anterior position in
the glenoid fossa with the teeth in maximum intercuspation
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
D) The position of the mandible when the condyles are in the most posterior‑inferior position in
the glenoid fossa
Answer: C
Explanation: Centric relation is a bone‑to‑bone relationship independent of tooth contact; it is
the most superior‑anterior condylar position.
**Question 4.** Which gypsum product provides the highest compressive strength for die
fabrication?
A) Type I plaster
B) Type II plaster
C) Type III stone (hydrocal)
D) Type IV high‑strength die stone
Answer: D
Explanation: Type IV die stone has a compressive strength of 13–16 MPa, ideal for precise die
work.
**Question 5.** The main advantage of using a baseplate wax in denture try‑in is:
A) High viscosity for easy carving
B) Low melting point allowing rapid removal
C) Superior hardness for polishing
D) Ability to bond chemically to acrylic resin
Answer: B
Explanation: Baseplate wax melts at low temperature, facilitating quick removal from the trial
denture.
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
**Question 6.** A high‑noble alloy typically contains at least what percentage of gold,
palladium, or platinum?
A) 10 %
B) 25 %
C) 40 %
D) 60 %
Answer: C
Explanation: High‑noble alloys must contain ≥ 40 % of noble metals (Au, Pd, Pt) to meet casting
standards.
**Question 7.** Which ceramic material is known for its high flexural strength and is commonly
milled for monolithic crowns?
A) Feldspathic porcelain
B) Lithium disilicate (e‑max)
C) Zirconia (Y‑TZP)
D) Alumina
Answer: C
Explanation: Y‑TZP zirconia offers flexural strength > 900 MPa and is suitable for monolithic
CAD/CAM crowns.
**Question 8.** The polymerization shrinkage of heat‑cured acrylic resin is approximately:
A) 0.2 %
B) 1 %
C) 3 %
D) 5 %
, [HAADDentalTech] HAAD DentalTech DOH
Licensureination for Dental Technician
Certification Exam Guide
Answer: C
Explanation: Heat‑cured PMMA contracts about 2–3 % during polymerization, requiring careful
flasking.
**Question 9.** In a full‑metal crown, the minimum metal thickness required for adequate
strength is:
A) 0.5 mm
B) 0.75 mm
C) 1.0 mm
D) 1.5 mm
Answer: B
Explanation: A metal thickness of ≥ 0.75 mm provides sufficient rigidity for full‑metal
restorations.
**Question 10.** The “chamfer” finish line is most appropriate for which type of restoration?
A) All‑ceramic crown
B) Porcelain‑fused‑to‑metal crown
C) Full‑metal crown
D) Inlay/onlay
Answer: C
Explanation: Chamfer margins give adequate thickness for metal while preserving tooth
structure.
**Question 11.** When designing a cobalt‑chrome removable partial denture framework, the
minimum connector dimension for a major connector in the maxillary arch is:
