Complete Denture Exam 1

Front 1

definition- complete denture prosthodontics

Back 1

1) the replacement of the natural teeth in the arch and their assoc. parts by artificial substitutes 2) the art and science of the restoration of the edentulous mouth

Front 2

types- complete denture prosthodontics

Back 2

1. conventional complete dentures 2. overdentures 3. immediate dentures 4. implant supported dentures

Front 3

major causes of tooth loss

Back 3

1. perio disease 2. caries 3. trauma 4. planned extractions 5. congenital absence

Front 4

the # of edentulous patients will _____ eventhough the % of edentulous patients w/in the population is ______

Back 4

increase, decreasing

Front 5

purposes of complete dentures

Back 5

1.esthetics 2.mastication 3.speech 4. oral health

Front 6

important aspects of treatment for dentist

Back 6

1.technical ability 2.interpersonal management skills 3.understanding of denture function and limitations

Front 7

tooth loss results in

Back 7

1.residual ridge resorption 2.changes in intraoral structures 3.dec. masticatory function 4.loss of facial support and muscle tone 5.psycho-social effects

Front 8

changes in appearance caused by tooth loss

Back 8

1.premature aging 2.nose closer to chin 3.cheeks fall in 4.narrowing of lips(loss of vermillion border) 5.inc. facial creasing

Front 9

reduced masticatory efficiency caused by tooth loss

Back 9

1. range and type of food is dec. 2.max. biting force is 5-6 x's less 3.dec. area of mucosa available to recieve load

Front 10

maxillary mean denture-bearing area

Back 10

22.96cm^2

Front 11

mandibular mean denture-bearing area

Back 11

12.25cm^2

Front 12

normal dental arch PDL area

Back 12

45cm^2

Front 13

problems due to wearing dentures

Back 13

1.denture stomatitis 2.flabby ridge 3.irritation hyperplasia 4.ulcers 5.oral cancer 6.burning mouth syndrome 7.gagging 8.ridge reduction 9.caries(overdentures) 10.atrophy of muscles 11.nutritional deficiencies

Front 14

control problems by

Back 14

1.retain some teeth if possible 2.yearly regular follow-ups 3.implant supports

Front 15

1st appointment

Back 15

patient exam>>history, intra&extra oral exam, radiographs, prelim. impressions, diagnostic casts, psychological aspects
Lab work: custom tray

Front 16

2nd apptmnt

Back 16

border molding and final impressions, Lab work: master casts, record base w/ occlusal rim

Front 17

3rd apptmnt

Back 17

jaw relation record, teeth selection, Lab work: mount casts, set teeth

Front 18

4th apptmnt

Back 18

try-in, verification, Lab work: prepare casts for flasking

Front 19

5th apptmnt

Back 19

denture placement

Front 20

6th, 7th, 8th apptmnt

Back 20

follow up, clinical remount

Front 21

purpose- preliminary impression

Back 21

diagnosis or construction of a tray

Front 22

purpose- final impression

Back 22

constructing master cast

Front 23

impression objectives

Back 23

1.preservation 2.support 3.stability 4.esthetics 5.retention

Front 24

preservation

Back 24

stimulation of alveolar ridge prevents resorption

Front 25

support

Back 25

maximum coverage provides snowshoe effect> distributes forces over widest area possible

Front 26

stability

Back 26

close adaptation is important; resistance to horizontal movement decreases 1.w/ loss of vertical height of ridges and 2.w/ inc. in flabby tissue

Front 27

esthetics

Back 27

vestibular fornix should be filled to restore facial contour

Front 28

retention

Back 28

depends on: 1.atm pressure (peripheral seal) 2.adhesion (saliva to denture) 3.cohesion (saliva to saliva) 4.mechanical locks 5. muscle control and patient tolerance

Front 29

features for maximum resistance

Back 29

1.optimum extension of denture base 2.close adaptation to mucosa 3.effective peripheral seal 4.polished surfaces 5.teeth placed in neutral zone 6.balanced neutrocentric occlusion

Front 30

primary impression should reproduce

Back 30

1. sulcus depth 2.sulcus width 3.landmarks which indicate correct extension of custom tray

Front 31

impression materials

Back 31

1.gypsum 2.ZOE paste 3.reversible hydrocolloid 4.irreversible hydrocolloid 5.rubber material 6. modeling compound 7.waxes

Front 32

reasons for inaccurate casts

Back 32

1.alginate dehydrates-shrinkage 2. alginate absorbs H2O- expansion 3.poor pouring technique 4.incorrect trimming

Front 33

dimensions-preliminary casts

Back 33

base-15-16mm
land area-3-4mm

Front 34

factors affecting treatment plan

Back 34

1. patients mental attitude 2.patients systemic status 3.past dental history 4.local oral conditions

Front 35

psycho-social effects

Back 35

1.philosophical 2.exacting 3.indifferent 4.hysterical

Front 36

philosophical

Back 36

rational; expectations are real; prognosis good

Front 37

exacting

Back 37

severe demands; must reach agreement before treatment; prognosis fair

Front 38

indifferent

Back 38

uninterested; fair prognosis

Front 39

hysterical

Back 39

emotionally unstable, demanding; psychiatric eval?; poor prognosis

Front 40

systemic diseases affecting dentures

Back 40

1.debilitating(diabetes, blood dyscrasias)2.joints (osteoarthritis) 3.CV disease 4.skin(pemphigus) 5.neuro(bells palsy, parkinson's) 6.oral malignancies (radiation) 7.menopause(osteoporosis)

Front 41

local factors affecting dentures

Back 41

1.broad square ridges, no undercuts 2.cuspid eminence, alveolar tubercles,broad palate(maxillary) 3.broad buccal shelf,firm retromolar pad(mandibular) 4. definite vestibular fornix 5.frenum attachments, high in max. and low in mand. 6.definite lingual sulcus 7.lateral throat form allows extension into retromylohyoid space 8.firm mucosal covering 9.gradually sloping palate w/ passive reflection at junct. of hard and soft palate 10.adequate inter-ridge space

Front 42

extra-oral exam

Back 42

proportion of face, palpation of lymph nodes, skeletal base relationship, TMJ

Front 43

intra-oral exam

Back 43

mucosal membranes, tongue, alveolar ridge, saliva, existing dentures

Front 44

the rate of resorption is ___ x's higher in the mandible compared to the maxilla

Back 44

4

Front 45

resorption occurs from

Back 45

buccal to labial, towards the lingual

Front 46

resorption results in

Back 46

denture instability, pseudo-class III jaw relation, secondary- dec. retention

Front 47

purposes- impression tray

Back 47

1.carry impression material to mouth 2.confine material in apposition to surface to be recorded 3.control impression material while it sets

Front 48

impression tray materials

Back 48

1.autopolymerizing acrylic resin 2.thermoplastic resin (vacuum formed) 3.thermoplastic shellac baseplate 4.light cure resin material by pressure adapting

Front 49

dimensions- custom tray

Back 49

2-3mm thick
2mm short of vestibule
2mm distal to fovea palatina
tissue stops- 4mm wide, 15mm length, 2mm from tray border margin
handle- labial tilt, 5-6mm depth, 18-20mm width, 12-15mm height

Front 50

definition- border molding

Back 50

shaping of the border areas of an impression tray by functional or manual manipulation of the tissue adjacent to the borders to duplicate the contour and size of the vestibule

Front 51

techniques- border molding

Back 51

1. incremental- stick tracing compound 2.one-step- rubbery material such as polyether

Front 52

3 M's of successful dentures

Back 52

mold, method, material

Front 53

stress bearing areas

Back 53

max- residual ridge, rugae
mand- buccal shelf, residual ridge

Front 54

buccal shelf

Back 54

cover w/ dense cortical bone, wide area perpendicular to direction to occlusal load, bound medially by alveolar crest, ant by buccal frenum, laterally by ext oblique, distally by retromolar pad; extent influenced by buccinator

Front 55

rubber impression material

Back 55

adv: accurate, stable for 1 hr, do not affect stone hardness, easy to handle, records undercuts accurately; disadv: long setting time, technique sensitive

Front 56

ZOE impression material

Back 56

adv: fluidity-inc detail, fast, easy handling, dimensionally stable, can be used as a refining material; disadv: temp, humidity, diff to control

Front 57

final impression techniques

Back 57

1.functional position-closed mouth 2.rest position-open mouth

Front 58

window tray impression technique

Back 58

used to record highly mobile or hypertrophic tissue w/ minimum displacement; normal impression w/ ZOE covering mobile tissue

Front 59

vibrating line

Back 59

imaginary line b/w moveable and immovable tissues of the soft palate

Front 60

valsalva maneuver

Back 60

patient holds nose and blows through it; accentuates vibrating line and fovea palatinae

Front 61

postpalatal seal area

Back 61

soft tissue at or beyond the junction of the hard and soft palates on which pressure can be applied to inc retention; extends 3mm buccal to both hamular notches; post. border is vibrating line

Front 62

purpose-postpalatal seal

Back 62

1.provide close tissue contact during speech and swallowing 2.enhance retention and stability 3.compensate for processing shrinkage of resin

Front 63

purpose-vent hole

Back 63

1.permit proper seating of loaded tray while taking impression 2.relieve pressure over the incisive papilla and the rugae 3.prevent trapping of air bubbles

Front 64

purpose-boxing an impression

Back 64

produce a dense, accurate master cast of predetermined thickness

Front 65

wax boxing method is used for

Back 65

1.ZOE paste 2.rubber base 3.silicone

Front 66

purpose-record base

Back 66

1.act as carriers for occlusal rims on which jaw relations are recorded 2.hold teeth in wax set up for try in 3.check accuracy of previously recorded records

Front 67

record base materials

Back 67

1.shellac 2.reinforced shellac 3.processed acrylic resin 4.chemical activated or self-curing acrylic resin 5.light cure resin

Front 68

thickness of record base

Back 68

2mm

Front 69

anatomic guides for facial lip contour

Back 69

nasolabial and mentolabial sulci, philtrum, commisure of the lips