Dental Charting, Tooth Morphology, and Occlusion Flashcards
6 cards from real RDA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Dental Charting, Tooth Morphology, and Occlusion flashcards as text
Using the Universal Numbering System, what number is assigned to the maxillary left central incisor?
Answer: #9
In the Universal Numbering System, #9 is the maxillary left central incisor. Numbering begins at #1 (upper right third molar) and goes across the top to #16, then down to #17 and across the bottom to #32.
Which tooth surface faces toward the cheek?
Answer: Buccal
The buccal surface faces the cheek (buccinator muscle). For anterior teeth, the term 'labial' is used instead, referring to the surface facing the lips.
What is the name of the type of occlusion where the mesiobuccal cusp of the maxillary first molar occludes in the buccal groove of the mandibular first molar?
Answer: Class I
Class I occlusion (Angle's Classification) describes the ideal relationship where the mesiobuccal cusp of the maxillary first molar occludes in the buccal groove of the mandibular first molar.
On a dental chart, which symbol typically indicates a tooth that has been extracted?
Answer: X through the tooth
A tooth that has been extracted is typically indicated by an X through the tooth number or diagram on a dental chart.
Which permanent tooth has a distinctive Carabelli's cusp?
Answer: Maxillary first molar
Carabelli's cusp (or cusp of Carabelli) is a fifth cusp sometimes found on the mesiolingual surface of the maxillary first molar. It is a morphological variation.
What is the name of the space between two adjacent teeth?
Answer: Interproximal space
The interproximal space (also called the interdental space) is the space between adjacent teeth, normally occupied by the interdental papilla.