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40 Cards in this Set
- Front
- Back
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What are three major functions of teeth?
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Mastication, phonetics and esthetics
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What are the function of anterior teeth?
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incising
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What is the function of posterior teeth?
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grinding
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How many developmental lobes do anteriors have?
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4
3 labial + 1 lingual |
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How many developmental lobes do posteriors have?
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Equals number of cusps
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In the anteriors, which lobe is the smallest?
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the middle lobe
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What is the lingual lobe called?
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Cingulum
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What makes the canine different than incisors in respect to lobes?
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It has a well developed middle lobe
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How many lobes does the premolar have and cusps?
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Has 4 lobes and 2 cusps
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Which premolar can have 3 cusps?
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mandibular 2nd
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Which molar has four lobes?
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Maxillary and mandibular 2nd and 3rd
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What is the occlusal plane for anterior to posterior curve?
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Curve of Spee
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What curve is medio-lateral?
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Curve of Wilson
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What is the combination of both wilson and spee curvatures?
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Curve of Monson
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What is the position of mandibular teeth in respect to their opposite arch?
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Mandibular 1/2 tooth anterior
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From a facial view, what geometric shape are teeth?
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Trapezoidal
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What shape are anteriors from proximal view?
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Triangular
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What is the shape of posterior teeth proximally?
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Trapezoidal for max and rhomboidal for mand
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What are proximal contact areas?
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The area where two adjacent teeth contact each other
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What happens to contact areas as we age?
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Increase in size
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What are the functions of contact areas?
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Stability
prevents food impaction Aids in food flow patterns |
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How do the contact areas change moving anterior to posterior?
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Becomes more cervical
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Which contact area is usually more incisal?
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Mesial
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How are the contact areas centered in anteriors, posteriors?
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F-L on anteriors
buccal to the midline posteriors |
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How many embrasures are there around a tooth?
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4
incisal, gingival, facial, lingual |
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What are embrasures for?
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spill way for food,
aids in self cleaning process esthetic |
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Which set of embrasures gets larger moving posterior?
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Incisal, occlusal
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What do the gingival embrasures do anterior to posterior?
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decrease
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What teeth have nearly equal facial lingual embrasures?
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anterior
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Which embrasure (faciolingually) is bigger in anteriors?
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lingual
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What is height of contour?
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Greatest extent of curvature of a crown surface
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Function of contact areas?
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Aids in protection and stimulation of gingiva
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Where is the facial HOC in all teeth?
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cervical third
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Lingual HOC?
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anteriors in cervical third
posteriors middle third |
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Which proximal HOC is more cervical in teeth?
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distal
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Which proximal side of the CEJ is more curved?
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mesial
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Which surface is the CEJ apically curved?
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Facial and lingual
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How many roots do anteriors have?
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usually one
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How many roots do maxillary molars have?
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3 usually
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how many roots do mandibular molars have?
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2 usually
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