Lecture 11- Interocclusal Contacts and Cuspal Pathways

Question 1

what are the two philosophies for interocclusal contacts

Answer 1

-cusp-fossa contacts
- cusp-marginal ridge contacts

Question 2

what is the cusp fossa relationship

Answer 2

-each functional cusp occludes in a fossa of the opposing tooth
- tooth to tooth arrangement

Question 3

when is the cusp fossa relationship used

Answer 3

when restoring both opposing quadrants of teeth

Question 4

what is the cusp marginal ridge relationship

Answer 4

each functional cusp contacts the marginal ridges of opposing pair of teeth or fossae of opposing teeth
- a one tooth to two tooth arrangement

Question 5

the majority of natural dentitions have which type of occlusion

Answer 5

cusp marginal ridge

Question 6

what is the cusp marginal ridge relationship used for

Answer 6

single restorations

Question 7

what does the cusp marginal ridge occlusal relationship allow for

Answer 7

some cusps to occlude onto marginal ridges and some others to occlude into fossa

Question 8

what does the cusp fossa relationship allow for

Answer 8

only for each cusp to occlude into one fossa

Question 9

what does the mandibular central incisor contact

Answer 9

the maxillary central incisor

Question 10

which teeth oppose only one other tooth

Answer 10

the mandibular central incisor and the maxillary 3rd molar

Question 11

what does the mandibular lateral incisor contact

Answer 11

the opposing maxillary central and lateral incisor

Question 12

what does the mandibular canine contact

Answer 12

the opposing maxillary lateral incisor and maxillary canine

Question 13

what does the mandibular first premolar contact

Answer 13

• the mesial marginal ridge of the 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 14

what does the mandibular second premolar contact

Answer 14

• 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 15

what does the MB of the mandibular first molar contat

Answer 15

• mesial marginal ridge of the maxillary first molar and the distal marginal ridge of the maxillary second premolar OR
  -mesial triangular fossa of the maxillary first molar

Question 16

what does the DB of the mandibular first molar contact

Answer 16

-central fossa of the maxillary first molar OR
- central fossa of the maxillary first molar

Question 17

what does the Distal cusp of the mandibular first molar contact

Answer 17

• usually non functional in occlusion OR
• distal fossa of the maxillary first molar OR
• distal fossa of the maxillary first molar

Question 18

what does the MB cusp of the mandibular second molar contact

Answer 18

• mesial marginal ridge of the maxillary second molar and the distal marginal ridge of the maxillary first molar OR
• mesial triangular fossa of the maxillary second molar

Question 19

what does the DB cusp of the mandibular second molar contact

Answer 19

• central fossa of the maxillary second molar
• central fossa of the maxillary second molar

Question 20

what does the maxillary central incisor contact

Answer 20

the mndibular central and lateral incisors

Question 21

what does the maxillary lateral incisor contact

Answer 21

the opposing mandibular lateral incisor and mandibular canine

Question 22

what does the maxillary canine contact

Answer 22

the opposing mandibular canine and overhangs- contacts the mandibular premolar

Question 23

what does the maxillary first premolar contact

Answer 23

-distal fossa of the mandibular first premolar or distal marginal ridge of the mandibular first premolar and mesial marginal ridge of the mandibular second premolar OR
- distal fossa of the mandibular first premolar

Question 24

what does the maxillary second premolar contact

Answer 24

-the distal fossa of the mandibular second molar or the distal marginal ridge of the. mandibular second premolar and the mesial marginal ridge of the mandibular first molar OR
- distal fossa of the mandibular second premolar

Question 25

what does the ML cusp of the maxillary first molar contact

Answer 25

-central fossa of the mandibular first molar OR - central fossa of the mandibular first molar

Question 26

what does the DL cusp of the maxillary first molar contact

Answer 26

-distal marginal ridge of the mandibular first molar and the mesial marginal ridge of the mandibular second molar OR - distal fossa of the mandibular first molar

Question 27

what does the ML cusp of the maxillary second molar contact

Answer 27

- the central fossa of the mandibular second molar OR - central fossa of the mandibular second molar

Question 28

what does the DL cusp of the maxillary second molar contact

Answer 28

- distal marginal ridge of the mandibular second molar OR - distal fossa of the mandibular second molar

Question 29

what is another name for working pathwyas

Answer 29

laterotrusive movement

Question 30

what is another name for non working pathways

Answer 30

mediotrusive movement

Question 31

the pathways each functional cusp will follow during excursive movements:

Answer 31

-right lateral movement - left lateral movement - protrusive movement