OCCLUSION Flashcards

1
Q

Which tooth has the greatest inclination

facially (faciolingual tilt)?

A

Maxillary Central incisors

followed by max. lats and then mand. incisors

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2
Q

Which teeth have the least tilt of all teeth and are called the straightest in the mouth?

A

Premolars

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3
Q

All teeth tilt facially, thus their roots are lingual EXCEPT

A

mand. 2nd premolars and molars

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4
Q

All teeth tilt mesially EXCEPT

A

max. central incisors and the mand. central and lateral incisors

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5
Q

Which tooth has the greatest mesial tilt?

A

Maxillary canines

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6
Q

Mandibular posterior roots are inclined ________ thus crowns inclined _______

A

Facially, lingually

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7
Q

Maxillary posterior roots are inclined ________ thus crowns inclined _______

A

Lingually, facially

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8
Q

Supporting/holding cusps of posterior teeth

A
MAXILLARY LINGUAL (UL) 
MANDIBULAR BUCCAL (BL)
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9
Q

What do supporting/holding cusps occlude with?

A

They contact fossa or marginal ridges of the opposing arch

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10
Q

Guiding cusps of posterior teeth

A
  • a. Buccal of the upper (BU)
  • b. Lingual of the lower (LL)
  • c. Together BU+LL=BULL (a way to remember this)
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11
Q

What do guiding (non functional) cusps occlude with?

A

Lie in embrasures or grooves of the opposing arch

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12
Q

ML cusps of all max. molars occlude with…

A

CENTRAL FOSSA OF OPPOSING TOOTH

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13
Q

DB cusp of mand. 1st molar occludes in…

A

central fossa of max. 1st molar

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14
Q

D cusp of mand. 1st molar occludes in…

A

distal triangular fossa of max. 1st molar

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15
Q

DB cusp of mand. 2nd molar occludes in…

A

central fossa of max. 2nd molar

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16
Q

Where does the lingual cusp of a 1st max. premolar contact?

A

the distal marginal ridge (DMR) of the mand. 1st

premolar and the mesial marginal ridge (MMR) of the mand 2nd premolar

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17
Q

Where does the lingual cusp of a 2nd max. premolar contact?

A

the DMR of the mand 2nd mand. Premolar and

the MMR of mand. 1st molar.

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18
Q

Where does the DL cusp of a 1st max. molar contact?

A

DMR of the mand. 1st molar. and the MMR of the

mand. 2nd molar

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19
Q

Where does the DL cusp of a 2nd max. molar contact?

A

the DMR of the mand. 2nd molar and MMR of the

mand. 3rd molar

20
Q

Where does the buccal cusp of a 1st mand. premolar contact?

A

MMR of the max. 1st premolar and slightly out

of contact with the DMR of the max. canine.

21
Q

Where does the buccal cusp of a 2nd mand. premolar contact?

A

the MMR of the max. 2nd premolar and the DMR

of the max. 1st premolar

22
Q

Where does the MB cusp of a 1st mand. molar contact?

A

MMR of the max. 1st molar and the DMR of the

max. 2nd premolar

23
Q

Where does the MB cusp of a 2nd mand. molar contact?

A

MMR of 2nd max. molar and the DMR of max.

1st molar

24
Q

Where does the buccal cusp of a 1st max. premolar contact?

A

facial embrasure between the 1st and 2nd mand.

premolars.

25
Q

Where does the buccal cusp of a 2nd max. premolar contact?

A

facial embrasure between the mand 2nd premolar

and the mand. 1st molar

26
Q

Where does the MB cusp of a 1st max. molar contact?

A

the MB groove of the mand. 1st molar

27
Q

Where does the DB cusp of a 1st max. molar contact?

A

in the DB groove of the mand. 1st molar

28
Q

Where does the MB cusp of a 2nd max. molar contact?

A

lies in the B groove of the mand. 2nd molar

29
Q

Where does the DB cusp of a 2nd max. molar contact?

A

the facial embrasure between the mand 2nd and 3rd

molar

30
Q

Where does the lingual cusp of a 1st mand. premolar contact?

A

L cusp is non-functional, but lies in the lingual

embrasure of the max. canine and max. 1st premolar

31
Q

Where does the lingual cusp of a 2nd mand. premolar contact?

A

the lingual embrasure between the max.

1st and 2nd premolar

32
Q

Where does the ML cusp of a 1st mand. molar contact?

A

the lingual embrasure between the max. 2nd premolar

and the max. 1st molar

33
Q

Where does the DL cusp of a 1st mand. molar contact?

A

lies in the lingual groove of the max. 1st molar

34
Q

Where does the ML cusp of a 2nd mand. molar contact?

A

lies in the lingual embrasure between the max. 1st and 2nd molar.

35
Q

Where does the DL cusp of a 2nd mand. molar contact?

A

lies in the lingual groove of the max. 2nd molar

36
Q

Max. central incisors occludes with

A

overlap mand. central & lateral incisors

37
Q

Max. lateral incisors occludes with

A

overlap mand. lateral incisors & canines

38
Q

Max. canine occlude with

A

lies in the facial embrasure between the mand.

Canine and 1st premolar

39
Q

Mand. central Incisors occlude with

A

MI angle opposes max. central incisor

MMR & DI angle opposes max. central’s lingual fossa

40
Q

Mand. lateral incisors occlude with

A

MI angle opposes DMR of max. central

incisor & DI angle opposes lingual fossa of max. lateral incisor

41
Q

Mand. Canine occlude with

A

lies in the lingual embrasure between the

max. lateral incisor and canine

42
Q

Centric Occlusion

A

TOOTH GUIDED POSITION

  1. maximum intercuspation
  2. habitual position
  3. acquired position
43
Q

Centric Relation

A

LIGAMENT GUIDED POSITION

  1. most retruded position of the mandible
  2. terminal hinge position
  3. non-funtional
44
Q

Physiological Rest Position

A

MUSCLE GUIDED POSITION

  1. position when teeth are NOT in contact
  2. position from which all movements originate and
    return
  3. postural position
45
Q

In lateral movement on the WORKING SIDE, the MAX 1st molar ML cusp passes through what?

A

LINGUAL GROOVE OF MANDIBULAR 1ST MOLAR