border movements

Question 1

maximal intercuspal position

Answer 1

the complete intercuspation of the oppositing teeth independent of condylar position
-REPRODUCIBLE if sufficient teeth present

Question 2

physical rest position

Answer 2

position of mandible when muscles are in equilibrium and condyles are neutral

Question 3

what is the interocclusal distance in physiologic rest position

Answer 3

freeway space (2 - 4 mm)

Question 4

centric relation

Answer 4

condyles articulate with thinnest avascular position of disc

-anterior superior position on articular eminences

Question 5

centric relation

Answer 5

• independent of tooth contact

- PURELY REOTARY MOVEMENT

Question 6

centric occlusion or centric relation occlusion

Answer 6

occlusion when mandible is in centric relation

Question 7

ideal occlusion

Answer 7

centric relation = maximal intercuspation

Question 8

posselt envelope

Answer 8

path of movement when traces at the tip of the mand central incisor

Question 9

protrusion

Answer 9

condyle moves forward and down

Question 10

vertical opening

Answer 10

• purely rotation (12-20mm)

- then translation and rotation (5-6mm)

Question 11

working side in lateral excursion

Answer 11

lateral, latero-post, or latero-ant

Question 12

non-working side in lateral excursion

Answer 12

forward and medial

-follows curved path

Question 13

lateral movement in direction of working side

Answer 13

bennett movement

Question 14

bennett angle

Answer 14

angle formed by sagittal plane and path of NW condyle

Question 15

protrusive movement is guided by

Answer 15

incisors

Question 16

lateral movement is guided by

Answer 16

canines

Question 17

in static occlusion, what protects what

Answer 17

post protects anterior

Question 18

in dynamic occlusion, what protects what

Answer 18

anteriors protect posteriors

Question 19

curve of spee

Answer 19

curve from tip of canine to DB cusp of 2nd molar

Question 20

curve of wilson

Answer 20

mediolateral curve that contacts B and L cusp tips of each side of the arch

Question 21

curve of wilson shows the inward inclination of the

Answer 21

lower posterior teeth

*L cusps are lower than B cusps

Question 22

because of the inward inclination of the lower posterior teeth

Answer 22

the upper teeth have an outward inclination, so the L cusps are higher than the B cusps

Question 23

what motion does curve of spee allow

Answer 23

protrusive movement of mandible

Question 24

what motion does curve of wilson allow

Answer 24

movements for chewing

Question 25

plane of occlusion

Answer 25

plane that covers incisal edge of incisors and tip of DB cusps of 2nd molars
-includes curves of spee and wilson and incisal plane