CH:11 Overview of the Dentitions (Dental Arches, Teeth Functions, Surfaces and Anatomic Features) Flashcards
What are the two sets of teeth people have in their lifetime.
Primary and permanent
How many teeth are in each dentition
20 in primary dentition
32 in permanent dentition
What is the terms for the four sections of the divided dental arches
Quadrants
What are the terms for the front teeth and the back teeth
Maxillary posterior
Maxillary anterior
Mandibular posterior
Mandibular anterior
What are the names of the sextants
Maxillary right posterior sextant, maxillary anterior sextant maxillary left posterior sextant
Mandibular left posterior sextant, mandibular anterior sextant, mandibular right posterior sextant
What are the four types of teeth
Incisors, canines (cuspids), premolars and molars
- there are no premolars in the primary dentition
What is the function of incisors
To incise or cut (doesn’t require heavy force)
What is the function of canines (cuspid)
Cutting or tearing (requires force)
Which tooth is the longest and has the longest roots
Canines
How many premolars are there
Four
What is the function of a premolar
To hold it and grind
The pointed buccal holds
The lingual cusps grind
Why don’t we use the term bicuspid anymore
Because the term by means that the premolar only has to cusps and some premolars have three cusps
What is the function of molars
To chew in the grind
How many cups do molars have
Four or more cusps on the occlusal surface
Which tooth is referred as the “cornerstone” of the dental arch
Canines
How many surfaces does a tooth have
Five
What are the surfaces of a tooth
Facial, lingual, masticatory(occlusal), medial, and distal
What are facial surfaces
The surface closest to the face
What are labial surfaces
Surfaces closest to the lips
What are buccal surfaces
surfaces closest to the inner cheek
what are lingual surfaces
surfaces on the mandibular and maxillary teeth closest to the tongue
what are palatal surfaces
surfaces closest to the palate
what is the masticatory surface
the chewing surface
what is the incisal surface (incisal edge)
the surface on anterior teeth
what is the occlusal surface
the surface on posterior teeth
what is the mesial surface
the surface on the tooth towards the midline
what is the distal surface
the surface on the tooth distant from the midline
what are proximal surfaces
when teeth are adjacent(next) to each other in an arch
what are interproximal surfaces
the area between adjacent tooth surfaces
Why are there curvatures on a tooth
to protect the gingiva from damage from the impact of foods during mastification, and stimulation for health
what does concave mean
curved inward
what does convex mean
curved outward
what are contact areas (contact points)
the area of a mesial or distal surface of a tooth that touches the adjacent area of a tooth in the same arch
what is the purpose of contact points
to prevent food from being trapped between teeth, stabilize the dental arches by holding the teeth in either arch, protects the interproximal gingival tissue from trauma during mastification
what is the bulge
the height of the contour
what is a contour
the curved surface of a tooth
what is an embrasure
the triangular space near the gingiva between proximal surfaces of two adjoining teeth
why must temporary crowns, bridges and restorations have proper contour, contacts, and embrasures
to ensure the health of oral tissue and for the comport of the patient and so the DA must understand the anatomical features of teeth to fabricate and place these temporary restorations
what are the five surfaces of the the teeth
facial/buccul, lingual/palatal, distal, mesial, masticatory(occlusial surface, incisal surface)
What is an interproximal space?
Area between adjacent tooth surfaces
What are proximal surfaces?
The surfaces next to each other when teeth are adjacent to in an arch.
What is the name of the triangular space towards the gingiva between adjacent teeth
An embrasure
