NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
Incisors are used for - correct answer cutting
canines are used for - correct answer Holding
Posterior teeth are used for - correct answer Biting and chewing
Premolars are used for - correct answer Hold and grind
Enamel is - correct answer 96% in organic
Dentin is - correct answer 70% inorganic
dentinogenesis imperfecta - correct answer incomplete or improper development of dentin
tissue
Dentin and cementum can - correct answer Repair itself
Cementum - correct answer 50% inorganic
primary teeth - correct answer Wider mesial to distal
Short crowns
Thinner enamel/dentin (more white)
Permanent teeth - correct answer Smaller pulp chamber
Larger roots
Not as white
What tooth is unlike any other tooth in either dentition? - correct answer Primary maxillary 1
molar
Ester - correct answer Topical
More chance of allergy
Milliamperage (mA) - correct answer A measurement unit for electrical current
Kilovoltage peak (kVp) - correct answer The maximum or peak voltage that is used during an x-
ray exposure.
Critical organgs - correct answer Eyes
Bone marrow
Thyroid gland
Skin
trabeculae - correct answer supporting bundles of bony fibers in cancellous (spongy) bone
,NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
Make spaces filled with bone marrow
filiform papillae - correct answer Touch
Epithelial attachment - correct answer Healthy gingivae cover the alveolar bone and attach to
the teeth on the enamel surface just above the neck of the tooth. This structure is known as the
lamina dura - correct answer thin compact bone that lines the alveolar socket
Incisive papilla - correct answer Pear-shaped pad of tissue that covers the incisive foramen
gingival sulcus - correct answer Rarely 2-3mm deep
Structure units of enamel - correct answer Prisms
Interradicular fibers - correct answer Aid in resisting of tipping and twisting
alveolar process - correct answer a ridge that forms the borders of the upper and lower jaws
and contains the sockets of the teeth
Support teeth in functional position
circular fiber group - correct answer Form neck of teeth
Free gingiva - correct answer Base of sulcus to mucogingival junction
Height of contour - correct answer widest part of the tooth
primate - correct answer Normal spaces in primary teeth
Cusp of Carabelli - correct answer a fifth cusp on the mesial lingual surface of most maxillary
first molars
Gingival papilla - correct answer The gingival projection that fills the interproximal space
taste receptors - correct answer Tip of tongue
lacrimal bone - correct answer small fragile bone making up part of the front inner walls of each
eye socket and providing room for the passage of the lacrimal ducts
contact point - correct answer The exact spot at which the teeth actually touch each other.
Curve of Spee - correct answer Curvature formed by the maxillary and mandibular arches in
occlusion
Polycarboxylate - correct answer permanent cementation for crowns, inlays, onlays, and
bridges
Strength and non irritating quality
Copland varnish - correct answer Good for amalgam
,NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
zinc oxide eugenol - correct answer Temporary cement - sedates the pulp
Powder to water ratio - correct answer Depends on intended use
Polycarboxylate finished - correct answer Glossy
Type 1 zinc phosphate - correct answer Accurate seating
Etch - correct answer Better adhesion
zinc phosphate - correct answer Luting agent for permanent restorations
Varnish - correct answer Over liner or base
GI capsules mixed - correct answer Mechanical trituration
mixing zinc phosphate - correct answer Dry cool slab decreases setting time
Macrofilled composites - correct answer Strength
Smooth tray use - correct answer Adhesive before final impression material
Wash - correct answer Syringe material
No bubbles in light bodied material - correct answer Extruding with keeping tip in the material
Vinyl gloves - correct answer Silicon putty
Polysiloxane - correct answer condensation silicone, impression material, mixing time 30-45
seconds. (THICK)
Light bodied material around tooth - correct answer Before heavy bodied
Extruder guns - correct answer Mixes material through mixing tip as it moves
Hydrophobic - correct answer water hating
Auto cure composite resin - correct answer Activate setting process
Bonding system - correct answer Supplemental to mechanical retention
tensile strength - correct answer A measure of how much stress from pulling, or tension, a
material can withstand before breaking.
porcelain - correct answer Most used ceramic
Gold alloy removable partial denture - correct answer extra hard, type lV
Luting - correct answer Bonding or cementing together
adding water to gypsum - correct answer makes weaker
, NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
box and pour method - correct answer The impression is surrounded with a "box" made from
boxing wax
First woman to graduate from dental school - correct answer Lucy Hobbs Taylor
Short acting local anesthetics - correct answer 60-180mins
Color coding system - correct answer correct ratio
correct brand
Needle length - correct answer 1 5/8 inches
any infection - correct answer anesthetic won't work
general anesthesia - correct answer safest in hospital
general anesthesia stages - correct answer stage 1: beginning anesthesia
stage 2: excitement
stage 3: surgical anesthesia
stage 4: medullary depression
blister - correct answer a lesion that extends above mucosal surface
benign tumor - correct answer not a form of cancer, and it is not life-threatening
a neoplasm
Macrognathia - correct answer Abnormally large jaws
Viruses can multiply in - correct answer DUWL
Maxillary first premolar - correct answer 2 cusps
buccal is long and sharp
2 roots
Maxillary second premolar - correct answer 2 cusps
1 root
wider buccolingually then mesially distally
cusps not as sharp
cusps almost same height
mandibular lateral incisor - correct answer lacks bilateral symmetry
ANSWERS) ALREADY GRADED A+
Incisors are used for - correct answer cutting
canines are used for - correct answer Holding
Posterior teeth are used for - correct answer Biting and chewing
Premolars are used for - correct answer Hold and grind
Enamel is - correct answer 96% in organic
Dentin is - correct answer 70% inorganic
dentinogenesis imperfecta - correct answer incomplete or improper development of dentin
tissue
Dentin and cementum can - correct answer Repair itself
Cementum - correct answer 50% inorganic
primary teeth - correct answer Wider mesial to distal
Short crowns
Thinner enamel/dentin (more white)
Permanent teeth - correct answer Smaller pulp chamber
Larger roots
Not as white
What tooth is unlike any other tooth in either dentition? - correct answer Primary maxillary 1
molar
Ester - correct answer Topical
More chance of allergy
Milliamperage (mA) - correct answer A measurement unit for electrical current
Kilovoltage peak (kVp) - correct answer The maximum or peak voltage that is used during an x-
ray exposure.
Critical organgs - correct answer Eyes
Bone marrow
Thyroid gland
Skin
trabeculae - correct answer supporting bundles of bony fibers in cancellous (spongy) bone
,NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
Make spaces filled with bone marrow
filiform papillae - correct answer Touch
Epithelial attachment - correct answer Healthy gingivae cover the alveolar bone and attach to
the teeth on the enamel surface just above the neck of the tooth. This structure is known as the
lamina dura - correct answer thin compact bone that lines the alveolar socket
Incisive papilla - correct answer Pear-shaped pad of tissue that covers the incisive foramen
gingival sulcus - correct answer Rarely 2-3mm deep
Structure units of enamel - correct answer Prisms
Interradicular fibers - correct answer Aid in resisting of tipping and twisting
alveolar process - correct answer a ridge that forms the borders of the upper and lower jaws
and contains the sockets of the teeth
Support teeth in functional position
circular fiber group - correct answer Form neck of teeth
Free gingiva - correct answer Base of sulcus to mucogingival junction
Height of contour - correct answer widest part of the tooth
primate - correct answer Normal spaces in primary teeth
Cusp of Carabelli - correct answer a fifth cusp on the mesial lingual surface of most maxillary
first molars
Gingival papilla - correct answer The gingival projection that fills the interproximal space
taste receptors - correct answer Tip of tongue
lacrimal bone - correct answer small fragile bone making up part of the front inner walls of each
eye socket and providing room for the passage of the lacrimal ducts
contact point - correct answer The exact spot at which the teeth actually touch each other.
Curve of Spee - correct answer Curvature formed by the maxillary and mandibular arches in
occlusion
Polycarboxylate - correct answer permanent cementation for crowns, inlays, onlays, and
bridges
Strength and non irritating quality
Copland varnish - correct answer Good for amalgam
,NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
zinc oxide eugenol - correct answer Temporary cement - sedates the pulp
Powder to water ratio - correct answer Depends on intended use
Polycarboxylate finished - correct answer Glossy
Type 1 zinc phosphate - correct answer Accurate seating
Etch - correct answer Better adhesion
zinc phosphate - correct answer Luting agent for permanent restorations
Varnish - correct answer Over liner or base
GI capsules mixed - correct answer Mechanical trituration
mixing zinc phosphate - correct answer Dry cool slab decreases setting time
Macrofilled composites - correct answer Strength
Smooth tray use - correct answer Adhesive before final impression material
Wash - correct answer Syringe material
No bubbles in light bodied material - correct answer Extruding with keeping tip in the material
Vinyl gloves - correct answer Silicon putty
Polysiloxane - correct answer condensation silicone, impression material, mixing time 30-45
seconds. (THICK)
Light bodied material around tooth - correct answer Before heavy bodied
Extruder guns - correct answer Mixes material through mixing tip as it moves
Hydrophobic - correct answer water hating
Auto cure composite resin - correct answer Activate setting process
Bonding system - correct answer Supplemental to mechanical retention
tensile strength - correct answer A measure of how much stress from pulling, or tension, a
material can withstand before breaking.
porcelain - correct answer Most used ceramic
Gold alloy removable partial denture - correct answer extra hard, type lV
Luting - correct answer Bonding or cementing together
adding water to gypsum - correct answer makes weaker
, NDAEB 2025 EXAM QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES (VERIFIED
ANSWERS) ALREADY GRADED A+
box and pour method - correct answer The impression is surrounded with a "box" made from
boxing wax
First woman to graduate from dental school - correct answer Lucy Hobbs Taylor
Short acting local anesthetics - correct answer 60-180mins
Color coding system - correct answer correct ratio
correct brand
Needle length - correct answer 1 5/8 inches
any infection - correct answer anesthetic won't work
general anesthesia - correct answer safest in hospital
general anesthesia stages - correct answer stage 1: beginning anesthesia
stage 2: excitement
stage 3: surgical anesthesia
stage 4: medullary depression
blister - correct answer a lesion that extends above mucosal surface
benign tumor - correct answer not a form of cancer, and it is not life-threatening
a neoplasm
Macrognathia - correct answer Abnormally large jaws
Viruses can multiply in - correct answer DUWL
Maxillary first premolar - correct answer 2 cusps
buccal is long and sharp
2 roots
Maxillary second premolar - correct answer 2 cusps
1 root
wider buccolingually then mesially distally
cusps not as sharp
cusps almost same height
mandibular lateral incisor - correct answer lacks bilateral symmetry
