ch 1 sec 8-9 Flashcards

1
Q

occlusion

A

refers to the relationship of the upper and lower teeth when they close together or contact one another during function or rest

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2
Q

tooth relationships are described in how many classes?

A

3 (1, 2, and 3)

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3
Q

ideal occlusion class 1

A

relationship between maxillary and mandibular dental arches, teeth should be close together in the maximum intercuspal position

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4
Q

maximum intercuspal position

A

best fitting together teeth

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5
Q

horizontal overlap of anterior teeth class 1

A

incisal edges of anterior maxillary teeth should horizontally overlap the mandibular

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6
Q

vertical overlap of anterior teeth class 1

A

incisal edges of maxillary anterior teeth should extend below the incisal edges of the mandibular teeth so that part of the incisal portion of mandibular incisors is hidden

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7
Q

relationship of posterior teeth class 1

A

maxillary posterior teeth are positioned slightly buccal to mandibular posterior teeth

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8
Q

relative alignment

A

vertical axis of midline of each maxillary tooth is slightly distal to the veritcal axis of its corresponding mandibular tooth

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9
Q

key factor in the definition of class 1 occlusion

A

the tip of the mesiobuccal cusp of the maxillary first molar is aligned directly over the mesiobuccal groove on the mandibular first molar

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10
Q

how many lobes does anterior teeth form?

A

3

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11
Q

anterior teeth develop from how many lobes?

A

4- 3 facial and 1 lingual

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12
Q

how many lobes on facial cusp of premolar?

A

3

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13
Q

how many lobes on lingual cusp of premolar?

A

1

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14
Q

two cusp type premolars forsm how many lobes?

A

4

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15
Q

three cusp type premolars form how many lobes?

A

5

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16
Q

as a general rule, each molar cusp forms from how many lobes?

A

1