UCLA BDP COMPREHENSIVE EXAM QUESTIONS AND
ANSWERS GRADED A+
Palmer Notation - ✔✔Quadrant based
Starting from central incisor going distantly, adult teeth are numbered 1-8
international tooth numbering system - ✔✔Quadrant based
Upper right: 1: 11-18
Upper Left: 2: 21-28
Bottom left: 3: 31-38
Bottom right: 4: 41-48
1-2: incisors
3: canines
4-5: premolars
6-8: molars
incisal - ✔✔tooth surfaces: line on incisor teeth, biting edge of front teeth
mesial - ✔✔tooth surfaces: side of tooth closer to midline
distal - ✔✔tooth surfaces: side of tooth away from midline
lingual - ✔✔tooth surfaces: side closer to your tongue mandibular (lower jaw)
Palatal - ✔✔tooth surfaces: side that's closer to your tongue
maxillary (upper jaw)
Buccal/Facial - ✔✔tooth surfaces: side of tooth that's closer to the cheeks
occlusal - ✔✔tooth surfaces: chewing surfaces of back teeth
Embrasure - ✔✔"V" shaped space formed by the proximal contacts between two
adjacent teeth
dental anomalies - ✔✔Abnormality in form, function, position of teeth, as well as its
bones and tissues
Macrodontia - ✔✔abnormally large teeth
Microdontia - ✔✔abnormally small teeth
Gemination - ✔✔"Twinning"; when a single tooth germ attempts to divide, resulting in
the incomplete formation of two teeth; the tooth usually has a single root and root canal
, Fusion - ✔✔fuzing of 2 originally separated teeth, 2 roots
If you have a normal number of teeth, then its fusion
Dens invaginatus (dens in dente) - ✔✔infolding of the enamel into dentin
Dens Evaginatus - ✔✔- Looks like an extra cusp or a talon
- Comes out of the tooth
common in premolars
palatogingival groove - ✔✔A developmental groove on the palatal surface of a tooth
Dilaceration - ✔✔Sharp bend in root or crown; usually greater than 90 degrees
Flexion - ✔✔Sharp bend restricted to the root portion; less than 90 degrees
Hypercementosis - ✔✔Excessive buildup of normal cementum(layer that covers the
root) on the root
Concrescence - ✔✔Union of teeth by cementum
Hyperdontia - ✔✔too many teeth
mesiodens
Anodontia - ✔✔absence of teeth
Hypodontia - ✔✔partial anodontia; the lack of one or more teeth
Oligodontia - ✔✔missing more than 6 teeth
amelogenesis imperfecta - ✔✔Genetic disorder that affects formation of enamel
Teeth are usually small
Higher risk of tooth decay
dentinogenesis imperfecta - ✔✔Affects dentin formation
Mutations in Dentine Sialophosphoprotein gene (DSPP)
Teeth are often translucent/opalescent
Teeth are weaker than normal
Bulb like shaped teeth, that are translucent like
Congenital syphilis - ✔✔Via sexual contact
Results in notches on biting surface of teeth
Fluorosis - ✔✔Excessive fluoride exposure when teeth are forming
Mild to severe discoloration
ANSWERS GRADED A+
Palmer Notation - ✔✔Quadrant based
Starting from central incisor going distantly, adult teeth are numbered 1-8
international tooth numbering system - ✔✔Quadrant based
Upper right: 1: 11-18
Upper Left: 2: 21-28
Bottom left: 3: 31-38
Bottom right: 4: 41-48
1-2: incisors
3: canines
4-5: premolars
6-8: molars
incisal - ✔✔tooth surfaces: line on incisor teeth, biting edge of front teeth
mesial - ✔✔tooth surfaces: side of tooth closer to midline
distal - ✔✔tooth surfaces: side of tooth away from midline
lingual - ✔✔tooth surfaces: side closer to your tongue mandibular (lower jaw)
Palatal - ✔✔tooth surfaces: side that's closer to your tongue
maxillary (upper jaw)
Buccal/Facial - ✔✔tooth surfaces: side of tooth that's closer to the cheeks
occlusal - ✔✔tooth surfaces: chewing surfaces of back teeth
Embrasure - ✔✔"V" shaped space formed by the proximal contacts between two
adjacent teeth
dental anomalies - ✔✔Abnormality in form, function, position of teeth, as well as its
bones and tissues
Macrodontia - ✔✔abnormally large teeth
Microdontia - ✔✔abnormally small teeth
Gemination - ✔✔"Twinning"; when a single tooth germ attempts to divide, resulting in
the incomplete formation of two teeth; the tooth usually has a single root and root canal
, Fusion - ✔✔fuzing of 2 originally separated teeth, 2 roots
If you have a normal number of teeth, then its fusion
Dens invaginatus (dens in dente) - ✔✔infolding of the enamel into dentin
Dens Evaginatus - ✔✔- Looks like an extra cusp or a talon
- Comes out of the tooth
common in premolars
palatogingival groove - ✔✔A developmental groove on the palatal surface of a tooth
Dilaceration - ✔✔Sharp bend in root or crown; usually greater than 90 degrees
Flexion - ✔✔Sharp bend restricted to the root portion; less than 90 degrees
Hypercementosis - ✔✔Excessive buildup of normal cementum(layer that covers the
root) on the root
Concrescence - ✔✔Union of teeth by cementum
Hyperdontia - ✔✔too many teeth
mesiodens
Anodontia - ✔✔absence of teeth
Hypodontia - ✔✔partial anodontia; the lack of one or more teeth
Oligodontia - ✔✔missing more than 6 teeth
amelogenesis imperfecta - ✔✔Genetic disorder that affects formation of enamel
Teeth are usually small
Higher risk of tooth decay
dentinogenesis imperfecta - ✔✔Affects dentin formation
Mutations in Dentine Sialophosphoprotein gene (DSPP)
Teeth are often translucent/opalescent
Teeth are weaker than normal
Bulb like shaped teeth, that are translucent like
Congenital syphilis - ✔✔Via sexual contact
Results in notches on biting surface of teeth
Fluorosis - ✔✔Excessive fluoride exposure when teeth are forming
Mild to severe discoloration
