Dentures Quiz 1

Front 1

what 2 locations does the pterygomandibular raphe attach to? muscles?

Back 1

posterior end of mylohyoid line to hamulus of medial pt plate; buccinator and superior constrictor

Front 2

what lies just buccal to the crest of the mandibular ridge/retromolar pad in DB corner of mandible?

Back 2

masseteric notch (45 degree area)

Front 3

anatomic area in the alveolingual sulcus just lingual to retromolar pad, bunded by mylohyoid ridge and retromylohyoid curtain, and anteiror tonsillary pillar

Back 3

retromylohyoid fossa/space/area

Front 4

What is the most distal extent of the mand. impression tray?

Back 4

retromylohyoid space area, just lingual to the retromolar pad

Front 5

What is the posterior limit to the mandibular denture?

Back 5

the entire retromolar pad

Front 6

What is used to mark the mandibular occlusal plane?

Back 6

anterior 1/3 of the retromolar pad

Front 7

how far and in what direction are the fovea palatini in relation to the vibrating line?' function?

Back 7

2mm anterior; minor salivary gland ducts

Front 8

Which anatomical structure is close to the max. tuberosity and can effect the impression? ot

Back 8

coronoid proc

Front 9

secondary stress bearing area max

Back 9

buccal and palatal slopes of the ridges [max BP]

Front 10

secondary stress bearing area mand

Back 10

facial and lingual slopes of the ridges [FL man]

Front 11

Q1 What is the name of the site where the mucous membrane lining of the lips and cheeks reflects and joins the unattached ginigva or alveolar mucosa?

Back 11

fornix of the vestibule - where lips/cheecks mucous membrane joins alveolar mucosa

Front 12

Q4 Why is the incisal papilla a good landmark to note when contouring occlusion rims and positioning the denture teeth?

Back 12

facial surfaces of central incisors are 8-10mm anterior to middle of incisal papilla; canine tips are in line with middle of incisal papilla

Front 13

Q9 What/where is the buccal shelf, why imp?

Back 13

buccal shelf is the PRIMARY stress-bearing area of the mandibular arch. Medially bounded by the crest of the residual ridge, laterally bounded by the external oblique ridge, in the mesial area by the buccal frenulum and on the distal side by the masseter. Just anterior to the masseter notch.

Front 14

Q10 What is the area that determines the most D-L extent of a mand. complete denture and what difficulites may the clinician have with this area?

Back 14

retromylohyoid area/fossa. This is the most distal extension of the mandibular denture . The opposing retromylohyoid areas are usually undercut in relation to each other. These undercuts complicate impressions

Front 15

Q8 Just buccal to the crest of the manibular ridge in the DB corner of the arch is the massteric notch/groove area. Why is this imp. when making/wearing mand compl. dentures?

Back 15

this fatty cheek area (masseter) must often be lifted to eliminate the fatty roll from a final impression - if not, dentures will be overextended and cause irritation/instability

Front 16

Why should you soak a cast in water for 5 min before trimming it?

Back 16

prevents slurry material from sticking to it

Front 17

when outlining the relief wax area on the maxillary tray, how far from the vibrating line does it stop? how far to both sides of midline?

Back 17

5-6 mm from vibrating line; 3 mm to sides

Front 18

Why do the retromylohyoid areas recieve minimal wax relief?

Back 18

to have good adaptation in this area - must receive enough blockout wax so impression tray can be removed from cast.

Front 19

TF vaseline covering the stone cast acts as a blockout material

Back 19

false - just a separating medium

Front 20

MAXILLARY custom tray handle dimension

Back 20

16 x 12 x 4 (lw, thickness)

Front 21

Anterior handle for mand tray dimensions

Back 21

16h x 12w x 6 thick

Front 22

Posterior handle for mand tray dimensions (2 post handles)

Back 22

10h x 14 x 6 thick mm

Front 23

How far from the incisive papilla should the tissue stops be placed? What size are the tissue stops?

Back 23

12mm from incisive papilla; 3x3 squares

Front 24

purpose of tissue stops

Back 24

prevents overseating of tray

Front 25

TF the properly trimmed mandibular impression tray will have buccal and lingual anterior flange lengths be the same length

Back 25

TRUE

Front 26

TF the properly trimmed mandibular impression tray will allow the masseter to approach the crest of the ridge at a 90degree angle and flow smoothly into the retromylohyoid area to avoid discomfort

Back 26

false - 45 to 60 degree angles

Front 27

Q6 Why is the hamular notch an important landmark in denture fabrication?

Back 27

b/w hamulus and max. tuberosity, the hamular notch marks the vibrating line (maximum posterior extent of the denture) runs bilaterally THRU the hamular NOTCHES

Front 28

Q7 What structure is located distal to the last mandibular molar and why is it important in making compl. dentures?

Back 28

retromolar pad - should be covered by denture & occlusal plane is located at the level of the middle-upper 1/3 of the pad

Front 29

Q8 Just buccal to the crest of the manibular ridge in the DB corner of the arch is the massteric notch/groove area. Why is this imp. when making/wearing mand compl. dentures?

Back 29

this fatty cheek area must often be lifted to eliminate the fatty roll from a final impression - if not, dentures will be overextended and cause irritation/instability

Front 30

Q9 What/where is the buccal shelf, why imp?

Back 30

buccal shelf is the PRIMARY stress-bearing area of the mandiibular arch. Medially bounded by the crest of the residual ridge, laterally bounded by the external oblique ridge, in the mesial area by the buccal frenulum and on the distal side by the masseter. Just anterior to the masseter notch.

Front 31

Q10 What is the area that determines the most D-L extent of a mand. complete denture and what difficulites may the clinician have with this area?

Back 31

retromylohyoid area/fossa. This is the most distal extension of the mandibular denture . The opposing retromylohyoid areas are usually undercut in relation to each other. These undercuts complicate impressions

Front 32

Picture of mand arch problem - where and what is the cause

Back 32

masseter notch - 45 deg angle on mand. arch caused by presence of fatty pad of masseter

Front 33

Picture of max arch problem - where and what is the cause

Back 33

pterygomandibular raphe

Front 34

Name 6 factors of denture retention

Back 34

adhesion, cohesion, interfacial surface tension, capillary attraction; atmospheric pressure; oral/facial muscles; [StAC MAp]

Front 35

What will improve retention of a complete denture?

Back 35

accurate adaptation of base to mucosa

Front 36

Why not just use alginate for dentures? (3)

Back 36

we can't make selective pressure impressions; may be short of proper extension or impinge on movable tissues; cant box and pour with alginate

Front 37

3 things and impression should allow

Back 37

retention, support, stability

Front 38

term: resistance of movement of the denture AWAY FROM the tissues

Back 38

retention [i'm going away from army (retention low)]

Front 39

Term: resistance of movement of the denture TOWARDS the tissues

Back 39

support

Front 40

term: resistance to horizontal (lateral) or rotational movements

Back 40

stability