5 - Occlusal Schemes, Lab 5a (Setting Lingualized Posterior Teeth), Lab 5b (Festooning)

Question 1

how many mm anterior horizontal and vertical overlap

Answer 1

1mm horizontal
1 mm verical

Question 2

in centric, do anterior have occlusal contact

Answer 2

no

Question 3

why is there minimal horizontal and vertical overlap in complete denture

Answer 3

1. minimize forces applied to mand and max anterior ridges in centric
2. create appropriate relationship of anterior teeth during production of siblant speech sounds
3. create bilateral balance (so anterior teeth can function properly with most posterior occlusal schemes)

Question 4

describe class II skeletal relationship

Answer 4

mandible travel further anteriorly in function than class I so horizontal overlap is necssary to allow for movement

Question 5

describe class III skeletal relationship

Answer 5

little or no anterior movement of mandible during function, so less or no horizontal overlap is developed

Question 6

denture occlusion is designed to ___ to best stabilize the denture during function

Answer 6

share occlusal foces

Question 7

do we ever use canine guidance in complete denture

Answer 7

never

Question 8

what types of teeth can create cross arch bilateral balances occlusion

Answer 8

1. anatomic (30 degree)
2. nonanatomic teeth (0 degree)
3. lingualized teeth (15 degree)
4. combinations of teeth above

Question 9

T/F: Mandibular arch covers a smaller area than the maxillary arch, mandibular arch requires more muscular control for its stability

Answer 9

true

Question 10

what is the area the occupies a position that functions best with surrounding lip, cheek, and tongue musculature?

Answer 10

neutral zone

Question 11

the flatter the ___ the flatter the ___

Answer 11

the flatter the ridge, the flatter the cusp angles

Question 12

factors to choose an occlusal scheme

Answer 12

age of patient
neuromuscular control
quality of the residual ridge (PDI
classification)
esthetic concerns of the patient
condylar inclination
skeletal relationship (Class I, Class Il,
Class III
residual ridge relationship

Question 13

indications for monoplane occlusion

Answer 13

~Poor Residual Ridges
~Poor Neuromuscular Control (Bruxers, CP, etc.)
~Previously successful with monoplane dentures or severely worn occlusion on previous denture
~Arch discrepancies (Skeletal Class II, III or Cross-bite)
~ACP Class III or IV
~Immediate Dentures (except when opposing
natural dentition)
~Potential poor follow-up

Question 14

indications for anatomic occlusion teeth

Answer 14

~Good Residual Ridges (height)
~Skeletal Class I
~ACP Class I or II
~Well Coordinated Patient
~Previously successful with anatomic dentures
~Denture opposes natural dentition
~When “lingualized” or anatomic bilateral balance occlusion is desired

Question 15

advantages and disadvantages of monoplane occlusion

Answer 15

Question 16

do 0 degree posterior teeth have anatomy on the teeth?

Answer 16

YES! it just doesnt have any cusp height

Question 17

anatomic (cusped) occlusion advantages and disadvantages

Answer 17

Question 18

how many degrees are:
ortholingual
orthotype
postaris

teeth

Answer 18

15 Degree Ortholingual Teeth
22 Degree Orthotype Teeth
33 Degree Postaris Teeth

Question 19

how do you determine what angle teeth to use

Answer 19

look at condylar inclination, use teeth of same degree or less

e.g., if CI = 20 degrees, use teeth 20 degree or less

Question 20

what does balanced articulatin provide

Answer 20

1. natural esthetics
2. inciasal overlap
3. centrilized occlusal forces
4. better bolus penetration
5. requires precise records (protrusive and/or lateral records)

Question 21

what are the 3 points of contact on anatomic occlusal plane

Answer 21

3 points of contact: maxillary buccal cusp
incline contacts MD buccal cusp incline, MX lingual cusp to incline of MD buccal cusp and mandibular incline of the MD lingual cusp

Question 22

macxillary occlusal plane should project where

Answer 22

1 to 2 mm below top of retromolar pad

Question 23

can you set teeth on the ascending ramus of the mandible?

Answer 23

NO

Question 24

where must mandibular posterior teeth be positioned

Answer 24

over the ridge

Question 25

what does buccal alignment mean

Answer 25

teeth should not be set beyond the vestibule. inner land area of cast is absolute limit. canine and premolars are even 1st and 2nd molars are even

Question 26

what maxillary posterior tooth do you set first when mounting in class I relationship? why?

Answer 26

set 1st molar horizontal overlap prevents cheek biting

Question 27

monoplane occlusion is also called what

Answer 27

"flat" occlusion

Question 28

what type of occlusion: - decreaes lateral forces - food stability - good for class II or III patients - patients that have ridge discrpancy - simple - horizontal overlap is critical

Answer 28

monoplane occlusion

Question 29

what occlusion: - verify maxillary teeth (except lateral incisors) are all on the plane of occlusion - both buccal and lingual cusps contact the plane of occlusion - correct monoplane mandibular arch set up on maxillary teeth before addressing

Answer 29

nonanatomic (monoplane) occlusal plane

Question 30

how to create bilateral balance with monoplane

Answer 30

1. add balancing ramps to compensate for Christenen's phenomenon to idealize stability of mandibular denture or 2. position 2nd molar about 15 degree up from occlusal plane

Question 31

what is the term use for the space that ocurs between opposing occlusal surface during mandibular protrusive movement

Answer 31

Christensen's phenomenon

Question 32

maxillary lingual cusps should only contact what of the mandibular posterior teeth

Answer 32

central groove

Question 33

maxillary buccal cusps should have how many mm of space between lingual incline of buccal cusp and buccal slop of mandibular bucal cusp

Answer 33

1 mm

Question 34

what occlusal scheme are we using for setting posterior teeth in lab? how many degree

Answer 34

lingualized posterior teeth 15 degree

Question 35

there should be an ID size card space behind what tooth on both side

Answer 35

behind mandibular canines

Question 36

what cusp on what tooth is 0.5 mm above occlusal plane

Answer 36

DB/DL cusp of mandibular 1st molar

Question 37

what cusp on what tooth is 1 mm above occlusal plane

Answer 37

MB/ML cusp on mandibular 2nd molar

Question 38

what cusp on what tooth is 1.5 mm above the occlusal plane

Answer 38

DB/DL 2nd molar

Question 39

what type of occlusion are we setting teeth in lab

Answer 39

cross tooth, cross arch bilateral balanced occlusion

Question 40

maxillary buccal cusps should be flared how many mm

Answer 40

1 mm

Question 41

in dentures, what are carvings in wax that simulate the contours of the natural tissues that are being replaced by the denture (root anatomy, alveolar bone, gingival roll etc)

Answer 41

festooning

Question 42

benefits of a properly contoured denture

Answer 42

1. improved esthetics (especially patient with a high smile line who displays a significant amount of gingiva) 2. improve tolerance and comfort 3. improve neuromuscular control and stability of the lower denture (lingual concavity & shape of the buccal shelf of facial side of denture) 4. limit biting of the lip or cheek 5. appropriate tongue space for normal speech articulation

Question 43

what must be flat or slightly convex to provide a more natural appearance and prevent food impaction

Answer 43

interdental papilla

Question 44

what posteriorly helps deflect the buccal mucosa away from biting surfaces

Answer 44

gingival roll

Question 45

what is very important in patients with high smile line (speaking and smiling)

Answer 45

gingival contours

Question 46

What are proper contours than minimize biting of lips and cheeks

Answer 46

lip contours

Question 47

what contour raises the lip and corner of the mouth

Answer 47

maxillary cuspid eminence - lip support and contour

Question 48

what eminences provide lip support and contour

Answer 48

maxillary and mandibular cuspid eminence

Question 49

T/F: thickness of labial flange impacts lip contours, this is developed during border molding the impression

Answer 49

TRUE

Question 50

what should the palatal thickness be

Answer 50

2-3 mm

Question 51

what contour promotes proper speech articular and reduce the incidence of gaggin

Answer 51

palatal contour

Question 52

what contour is placed on mandible to deflect food

Answer 52

posterior buccal bulge

Question 53

what contour on mandible facilitates stability and control of denture

Answer 53

lingual concavity

Question 54

when are you done with denture

Answer 54

1. all teeth set and anatomically waxed 2. pin at zero and holds shimstock with incisal guide table 3. posterior teeth hold shim stock 4. anterior teeth drag shim