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ABGD study > Removable- ABGD > Flashcards

Removable- ABGD Flashcards

1
Q

What is the greatest rate of resorption in a edentulous patient?

A

1st 12 months

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2
Q

between the maxilla and mandible which experience greater resorption? and by how much

A

mandible 4x greater

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3
Q

What anatomic structure is #1?

A

retromolar pad

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4
Q

How does the retromolar pad develop

A

scar from 3rd molar removal

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5
Q

What comprises the retromolar pad?

A

buccinator,
mucous glands,
temporalis tendon
pterygoidmandibular raphe
superior constrictor

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6
Q

What is the primary support area for a mandibular complete denture?

A

buccal shelf

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7
Q
A

Submandibular fossa

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8
Q

What anatomical structure is located in the submandibular fossa?

A

submandibular gland

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9
Q

What is the primary support area for a maxillary complete denture.

A

post alveolar ridge

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10
Q

What anatomical structure identifies the distal end of a max complete denture?

A

Hamular Notch - aka Pterygomaxillary notch

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11
Q

What does the post palatal seal accomplish on a complete denture?

A
  • creates a post seal against the soft palate
  • increased the cross sectional strength
  • compensates for polymerization shrinkage
  • increases retention
  • decreases the gag reflex
  • less food under the denture
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12
Q

Where do you place the posterior palatal seal?

A

at approximately the vibrating line (Ahh) which is near the fovea palatine ~ 2mm post

creating:
empirical alteration
functional/direct: add wax to your trial base
semi-functional: adjust the cast according to the palpated amount of tissue depressability
***Ahhh and valsalva lines

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13
Q

For denture patients, what are some factors causing candida-associated denture stomatitis?

A

Systemic:
DM, age, steroid, poor nutrition

Local: trauma, xerostomia, ABX, amoking, high carb diet

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14
Q

How much space do you need for a lingual bar? What is the minimum height for one?

A

7mm for L bar
min 4mm bar height
3mm from ging margin

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15
Q

What are the requirements for an all on 4 denture?

A

no para-function
standard mouth opening

Adequate ridge size:
- MAX: W-5mm, H-10mm
- Mand: W-5mm, H-8mm
Min 10mm implant

Tilt of implant 45 degrees maximally on post (reduces cantilever)
A-P spread: 1.5
10-12 teeth as fixed, with max 1-2 teeth cantilever

Achieve primary stability during surgery (35Ncm)

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16
Q

Whats the minimum space for a denture locator

A

8-10mm

Locator: 3-3.5mm
Acrylic: 2mm
Abutment cuff/tissue to implant platforms: 2mm

17
Q

How are kennedy classifications modified when dental implants are considered?

A

McDermott- “OD” over denture
Schneid & Mattie: “I” implant

Ie: Class 1- I (19,30)

18
Q

When would you consider a reline/rebase?

A

Immediate dentures, 3-6 months after initial fabrication

alveolar ridge resorption, but occlusion still stable

pt can’t afford a new denture

When making a new set would cause the pt undue stress

19
Q

How do you do a clinical remount and why?

A

can fully ID post processing occlusal issues

ID problems in lab, which saves chair time, and patient isnt watching

20
Q

How do you perform a clinical remount

A

save the remount index and mx/mand remount jigs
make an intraoral centric max occ x2
mount the mandibular denture using the pre-process remount jig on the articulator
mount the max to the mand using the intraoral centric bite registration
set condylar guidance/process side shift to previous settings

Set/verify occlusion: centric contact
- Working: BULL RULE
Balancing: L inclines of mand B cusps
Protrusive: mesial inclines of mand cusp and D incline of max cusp

21
Q

just look at these and know them

A
22
Q

What are the different impression techniques?

A

Mucostatic
- pressureless, tissues at rest
Functional
- impression made while tissues are under load
Selected Pressure
-distribute pressure to areas that are best capable of withstanding load

Mucostatic: hese impressions will generally lead to a denture which has a good fit during rest, but during chewing, the denture will tend to pivot around incompressible areas (e.g. torus palatinus) and dig into compressible area

23
Q

What are 2 critical measurements to collect at the records appointment?

A

Facebow- stimulate jaw movements, assessment of tooth arrangement

Jaw relation at proposed OVD
- minor changes in vertical can be made at try in

24
Q

What is the importance of vertical dimension determination?

A

physiological rest
phonetics and esthetics
patient perception
closest speaking space

25
Q

What are two common occlusal schemes?

A

Lingualized
-esthetic compromise
- articulates max lingual to man occlusal
-easier occlusal adjustment
-class 2, 3, articulators

Monoplane
- nonanatomic teeth set on compensating curve
- goal is to eliminate lateral forces
- patients with poor coordination and neuromuscular control

26
Q

What is hanau’s quin or thielmann’s formula

A

5 factors that affect occlusal balance

CGxIG / OPxCAxCC
= balanced occlusion

CG= condylar guidance (unchange)
IG: incisal guidance
OP: occlusal plane
CA: cusp angle
CC: compensating curve

27
Q

How is an articulator programed?

A

Condylar inclination- protrusive angle
Bennet angle= H/8 +12

H= horizontal condylar inclination degree

28
Q

What is kelley’s combination syndrome?

A

Natural mandibular anterior teeth opposing edentulous maxillary teeth

Seen:
-maxillary ant ridge resorption
-pendulous tuberosity
-maxillary papillary hyperplasia
-mand anter extrusion
-mand post ridge resorption
-overclosure of OVD

29
Q

What are the 3 lever classes in RPDs?

A

Class 1: see saw- fulcrum between resistance and applied force
Class 2: wheel barrow - fulcrum at the edge with force and resistance on the same side
Class 3: fishing pole- fulcrum and resistance at ends with effort in the middle

30
Q

What are the RPD classifications?

A

Class I: bilateral edentulous
Class II unilateral post edentulous
Class III: tooth borne
Class IV- anterior tooth born

31
Q

What are 3 criteria for distal extension of a denture base?

A

adequate support for distal extension
denture base
flexible direct retainer
indirect retainer

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