Interocclusal contacts in MIP and excursive movements

Question 1

What are the two philosophies for interocclusal contacts?

Answer 1

*Cusp-Fossa contacts
*Cusp-Marginal Ridge contacts

Question 2

What is a cusp-marginal rige occlusion?

Answer 2

Each Functional cusp contacts the marginal ridges of opposing pair of teeth or fossae of opposing teeth.

Question 3

What are synonymous terms for functional cusps

Answer 3

supporting, centric,
working, stamp cusps

Question 4

what are synonymous terms for non-functional cusps

Answer 4

guiding, non-centric,
non-working, shearing cusps

Question 5

How many teeth arrangement is Cusp-marginal ridge?

Answer 5

1 tooth to two teeth arrangment

Question 6

What is occlusion type is commonly used for single restorations?

Answer 6

Cusp-marginal ridge

Question 7

what kind of occlusion makes up the majority of natural dentition

Answer 7

cusp-marginal ridge

Question 8

What type of occlusion is cusp-fossa?

Answer 8

Each functional cusp occludes in a fossa of the opposing tooth

Question 9

How many teeth arrangement is Cusp-fossa?

Answer 9

tooth to tooth arrangment

Question 10

What occlusion type is used when retsoring both opposing quadrants of teeth?

Answer 10

cusp-fossa

Question 11

The cusp-fossa relationship allows only for each cusp to occlude into ____ fossa.

Answer 11

one

Question 12

The cusp-marginal ridge occlusal relationship allows for some cusps to occlude onto __________ ______ and some others to occlude into _________ ______.

Answer 12

marginal ridges
occlusal fossae

Question 13

In anterior interocclusal contacts the mandibular central incisor contacts…

Answer 13

maxillary central incisor
- opposes only one tooth (only tooth to do this besides the max 3rd molar)

Question 14

In anterior interocclusal contacts the mandibular lateral incisor contacts…

Answer 14

opposing maxillary central and lateral incisors

Question 15

In anterior interocclusal contacts the mandibular canine contacts…

Answer 15

opposing maxillary lateral incisor and maxillary canine

Question 16

In posterior interocclusal contacts the mandibular first premolar contacts…

Answer 16

• mesial marginal ridge of maxillary first premolar and the distal marginal ridge of the maxillary canine (cusp-marginal ridge)
  or
• mesial fossa of the maxillary first premolar (cusp-fossa)

Question 17

In posterior interocclusal contacts the mandibular second premolar contacts…

Answer 17

• mesial marginal ridge of the maxillary second premolar and the distal marginal ridge of the maxillary first premolar (cusp-marginal ridge)
  or
• mesial fossa of the maxillary second premolar (cusp-fossa)

Question 18

In posterior interocclusal contacts the mandibular first molar MB cusp contacts…

Answer 18

• mesial marginal ridge of the maxillary first molar and the distal marginal ridge of the maxillary second premolar (cusp-marginal ridge)
  or
• mesial triangular fossa of the maxillary first molar (cusp-fossa)

Question 19

In posterior interocclusal contacts the mandibular first molar DB cusp contacts…

Answer 19

▪central fossa of the maxillary first molar (cusp-marginal ridge)
or
▪central fossa of the maxillary first molar (cusp-fossa)

Question 20

In posterior interocclusal contacts the mandibular first molar D cusp contacts…

Answer 20

• usually non-functional/not in occlusion
  or
• contacts the distal fossa of the maxillary first molar (cusp-marginal ridge)
  or
• contacts the distal fossa of the maxillary first molar (cusp-fossa)

Question 21

In posterior interocclusal contacts the mandibular second molar the MB cusp contacts…

Answer 21

*mesial marginal ridge of the maxillary second molar and the distal marginal ridge of the maxillary first molar (cusp-marginal ridge)
or
*mesial triangular fossa of the maxillary second molar (cusp-fossa)

Question 22

In posterior interocclusal contacts the mandibular second molar DB cusp contacts…

Answer 22

• central fossa of the maxillary second molar (cusp-marginal ridge)
  or
• central fossa of the maxillary second molar (cusp-fossa)

Question 23

What are the three types of excursive movements?

Answer 23

• right lateral movement
• left lateral movement
• protrusive movement

Question 24

What are the cuspal pathways?

Answer 24

• working (laterotrusive)
• non-working (mediotrusive)
• protrusive

Question 25

For anterior interocclusal contacts the maxillary central incisor contacts...

Answer 25

mandibular central and lateral incisors

Question 26

For anterior interocclusal contacts the maxillary lateral incisor contacts...

Answer 26

opposing mandibular lateral incisor an mandibular canine

Question 27

For anterior interocclusal contacts the maxillary canine contacts...

Answer 27

opposing mandibular canine and overhangs-contacts the mandibular premolar

Question 28

For posterior interocclusal contacts the maxillary first premolar contacts...

Answer 28

* distal fossa of the mandibular first premolar OR * distal marginal ridge of the mandibular first premolar molar and mesial marginal ridge of the mandibular second premolar (cusp-marginal ridge) or * distal fossa of the mandibular first premolar (cusp-fossa)

Question 29

For posterior interocclusal contacts the maxillary second premolar contacts...

Answer 29

* distal fossa of the mandibular second premolar OR * distal marginal ridge of the mandibular second premolar molar and the mesial marginal ridge of the mandibular first molar (cusp-marginal ridge) or * distal fossa of the mandibular second premolar (cusp-fossa)

Question 30

For posterior interocclusal contacts the maxillary first molar ML cusp contacts...

Answer 30

* central fossa of the mandibular first molar (cusp-marginal ridge) or * central fossa of the mandibular first molar (cusp-fossa)

Question 31

For posterior interocclusal contacts the maxillary first molar DL cusp contacts...

Answer 31

* distal marginal ridge of the mandibular first molar and the mesial marginal ridge of the mandibular second molar (cusp-marginal ridge) or * distal fossa of the mandibular first molar (cusp-fossa)

Question 32

For posterior interocclusal contacts the maxillary second molar ML cusp contacts...

Answer 32

* central fossa of the mandibular second molar (cusp-marginal ridge) or * central fossa of the mandibular second molar (cusp-fossa)

Question 33

For posterior interocclusal contacts the maxillary second molar DL cusp contacts...

Answer 33

* distal marginal ridge of the mandibular second (cusp-marginal ridge) or * distal fossa of the mandibular second molar (cusp-fossa)