Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Denture Manual Flashcards (Part 4 prep) > Denture Manual 52-81 (Anterior/Posterior Controlling Factors and occlusal setups) > Flashcards

Denture Manual 52-81 (Anterior/Posterior Controlling Factors and occlusal setups) Flashcards

Hanau's Quint, Monoplane vs Lingualized vs Cross tooth cross arch

1
Q

What is Thielman’s formula?

Which of these are the “posterior controlling factors” on denture occlusion? (3)

A

K (balance) = CG x IG / CH x CC x O

Cusp height
Compensating curve
Plane of occlusion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Limitations and occlusal errors produced by the use of the Hanau articulator

A
  1. Fixed intercondylar distance
  2. Straight condylar path
  3. No Fischer angle
  4. No individual working condylar motion
  5. Arbritary hinge axis location
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What phenomenon aids in compensation for limitations of the articulator?

A

REALEFF (resiliency and like effects)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Four determinants of esthetics

A

Shade
Arrangement
Form
Phonetics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Who in 1914 concluded that human teeth could be classified into three principal shapes? What are these shapes?

What did he advocate as the method to select the most pleasing appearance?

A

J Leon Williams

Rectangular, triangular, ovoid

Take the outline form of a patient’s face and flip it to find the shape that would harmonize their face

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Who in 1955 proposed the concept to “art, practice, and technique to achieve the esthetic goal in dentistry”, and what is that concept called?

A

Frush and Fisher

Dentogenic concept or dynesthetics

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Dynesthetics/dentogenic harmonizes what three attributes for tooth selection?

A

SPA

  • Sex (male/female)
  • Personality (vigorous, medium, delicate)
  • Age (young, middle, elderly)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Labial sounds - What are the sounds?

- What two errors in setup would lead to defective sounds?

A

P & B

  1. Insufficient support of lips (thickness of denture flange)
  2. Incorrect anterior posterior position of anterior teeth
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Labiodental sounds - What are the sounds?

  • What happens if the incisors are too short?
  • What happens if the incisors are too long?
  • Who proposed using this method to set the central incisors?
A

F & V

  • If too short - V sounds like F (Vivian sounds like Frank)
  • If too tall - F sounds like V (Frank sounds like Vivian)
  • Earl Pound
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Linguodental sound - Th

- What movement causes linguodental sounds?

A
  1. Tongue extends between maxillary and mandibular anterior teeth
    - Setup of anteriors too anterior or too posterior
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Linguopalatal sounds - What are they?

- What movement creates them?

A
  1. T & D

- Tip of tongue contacts anterior part of palate or lingual side of anterior teeth

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Sibilants

  • What sounds?
  • Who proposed using these sounds to help determine vertical dimension?
A

Ch, J, S

Earl Pound 1977

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

A whistle sound can result from what two errors?

A
  1. Too narrow of an arch

2. Opening two small

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What two things did Martone discover?

Hint: think of how he sets the initial “tone” for setting teeth

A

Maxillary incisors fall approximately 8 to 10 mm anterior of incisive papilla.

Also, a perpendicular line bisecting the incisal papilla should extend outward through the middle of the maxillary canines.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Who determined that men display more mandibular anterior teeth than women?

A

Cade

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Who coined the phrase “speaking centric”, aka “closest speaking level”, aka “closest speaking space”?

A

Silverman 1950

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What three things are Pound known for?

A
  1. Max anteriors - evaluating length and anteroposterior via F and V sounds
  2. Let S Be Your Guide (1977) - Mandibular anterior arrangement
  3. Originating the term “lingualized occlusion” (1970) based off the work of Payne 1941
18
Q

What are the five factors of occlusion?

Who developed this?

A 
Condylar guidance
Incisal guidance
Compensating curve
Cusp height
Occlusal plane

Hanau (1926)

Fun fact: Hanau is an engineer from Capetown, South Africa. (Harry Page is also an engineer - mucostatic impressions)

19
Q

Advantages of anatomic teeth (pg 60)

A
  1. Permits mechanically and physiologically balanced occlusion
  2. Penetrates food more easily
  3. Articulated in harmony with the TMJ and muscles of mastication
  4. Resists rotation of denture bases through cusp interdigitation in laterotrusion
  5. Offers better esthetics
  6. Interdigitate
  7. Cause “less” trauma to underlying structures
20
Q

Disadvantages of anatomic teeth (pg 61)

A
  1. Little tolerate in their articulation and require exacting technique
  2. Some claim that it produces lateral torque in eccentric movement, being more traumatic than noncusp teeth
  3. Adjustment should be done on an articulator rather than intraorally
  4. Relining and rebasing is more difficult
21
Q

Definition of semi-anatomic teeth (GPT pg 70)

  • What do critics say is the disadvantage of semi-anatomic teeth?
A

Modified denture tooth occlusal forms with a 20 degree or less cuspal incline

All of the disadvantages of cusp teeth with none of the advantages of flat plane teeth

22
Q

Who advocated for semi-anatomic teeth (pg 61)

- He argued that by having less step cuspal inclines, you can have functional harmony with what anatomic structure?

A

Schuyler

Glenoid fossa

23
Q

What two things are Clyde Schuyler known for?

A
  1. Semi-anatomic teeth

2. BULL rule - adjusting those cusps not in occlusal contact at MI/CO

24
Q

Define non anatomic teeth (pg 61)

Who first introduced them and who else has advocated for them? (GPT pg 61)

A

All teeth with occlusal forms that have no resemblance to anatomic teeth and offer occlusion without intercuspation

Hardy introduced in 1942

Sears, DeVan, Brudvick and Wormley

Fun fact: Neutrocentric not in GPT

25
Q

Advantages of non anatomic teeth (7)

A
  1. Does not lock mandible in one position and permits use of simple, less time-consuming techniques and articulators
  2. Minimize horizontal pressures due to absence of inclined planes
  3. Permit closure in more than one position (CR becomes an area rather than a point)
  4. Adapts easily to Class II and Class III jaw relations
  5. Accommodate changes to vertical and horizontal relations
  6. Make relining and rebasing simpler
  7. Improve denture stability by permitting proper centralization of occlusal plane in relation to residual ridges
26
Q

Disadvantages of non anatomic teeth (6)

A
  1. Less efficient for mastication because they do not penetrate food effectively
  2. Inadequate food escape ways
  3. Esthetically inferior to anatomic forms
  4. Encourage a higher component of lateral or diagonal jaw movement during chewing and increase rather than decrease horizontal forces on denture bases
  5. Nonanatomic forms may introduce a negative psychological influence in terms of food-penetrating ability
  6. When set on a curved plane for balanced occlusion the inclined plane may cause skidding of the denture base
27
Q

Buccolingual placement of posterior teeth in mechanical positions (instead of anatomical) was advocated by who? (pg 63)
- Advantages?

A

Sears (1948, 1957) and De Van (1956)

- Maximum stability, forces of mastication are at right angles to residual ridge

28
Q

Buccolingual placement of posterior teeth in mechanical positions (instead of anatomical) (pg 63)

  • Who was critical of mechanical positioning?
  • Disadvantages
A

Pound 1951 (and others)

Argued that clinical residual ridge is often lingual to the bony ridge in mandibles with extreme alveolar ridge resorption

29
Q

Buccolingual placement of posterior teeth - anatomical positions (instead of mechanical) (pg 63)

  • Who advocated it?
  • Advantages and disadvantages
A

Pound, Roberts, Fish, Lamie, Neufield, Carlsson, Persson

Disadvantage: Creates leverage leading to extensive denture movement (leading to resorption of the residual ridge)

30
Q

Superoinferior positioning of posterior teeth - Mechanical

  • Advantages
  • Disadvantages
  • Proponents
A

ADV: Keep occlusal plane closer to the denture base with less favourable ridge size and contour
DADV: Increases leverage of the mandibular denture and exerts greater pressure on supporting tissues
Proponents: Sears (1957) and Pleasure (1937)

31
Q

Superoinferior positioning of posterior teeth - Anatomic

  • Advantages
  • Proponents
A

ADV: Denture stability and masticatory function

Proponents: Wright, Pound

32
Q

Payne advocated for what kind of tooth form for occlusal schemes?

A

Anatomic teeth (slightly more efficient) 1951-52

But many other studies say no evidence of superiority

33
Q

Define Christensen phenomenon

A

The space that occurs between posterior occlusal surfaces during mandibular protrusion

Carl Christensen 1905 - Denmark dentist/professor

34
Q

Indications for non anatomic tooth forms

Who advocated for non anatomic tooth forms

A
  1. Class II or III malocclusion
  2. Severe residual ridge resorption
  3. Excessive inter arch distance
  4. Poor neuromuscular skills
  5. Poor patient adaptability
  6. Reverse occlusal (Pleasure) curve in existing dentures
35
Q

Who first described lingualized occlusion? (pg 73)

Four advantages?

A

Payne 1941

  1. Better adapted to different types of ridges
  2. Greater masticatory efficiency
  3. Eliminates lateral interferences
  4. Allows for settling without unbalancing articulation by cuspal inclination
36
Q

Three disadvantages of lingualized occlusion (pg 73)

A
  1. Decreased masticatory efficiency
  2. Does not resist rotation as well as cross-tooth cross-arch
  3. May result in increased lateral forces
37
Q

Payne and Ortman; Becker - Indications for lingualized

A

Payne/Ortman - Use on virtually all cases, except flat ridges, cases with excessive interring distance

Becker - Severe alveolar resorption, class II jaw relationship, displaceable supporting tissue

38
Q

Lingualized - contraindications (3)

A
  1. Repeatable CR records not possible
  2. 0-degree teeth set in monoplane are indicated (Parkinson, pathologic joint, some CII patients)
  3. Flat ridges unable to resist lateral force
39
Q

Pound and Murrell recommend what degree teeth for lingualized?

Are facebow and protrusive records essential? If not, what condylar inclination do you set your semi-adjustable articulator to?

A

33 degree maxillary versus 20 or 0 degree mandibular

Not essential but advised. If not obtained, use 30-degree condylar inclination for Class I or III and 20 for Class II patients

40
Q

Payne and Ortman recommend what degree teeth for lingualized? (pg 76)

Difference between Payne/Ortman and Pound/Murrell

A

33 degree versus 33 degree

Identical to Pound/Murrell except:

  1. They grind lingual cusp of mandibular posteriors and turn the tooth buccal lingually
  2. Protrusive balance exists between maxillary second molar and mandibular second molar
41
Q

Which posterior teeth are not in contact for lingualized at laterotrusive and mediotrusive?

How about which posteriors are in contact at protrusive?

A
  1. First premolars not in contact at all excursives

2. In protrusive, second molars in contact in protrusive (Payne/Ortman)

42
Q

Cross tooth cross arch aka Anatomic setup - Advantages (3)

- Disadvantages (3) (pg 78)

A
  1. Esthetics
  2. Better penetration of food, requiring less force and decreased vertical stresses on ridges
  3. Anatomic occlusion arranged in harmony with muscles of mastication and TMJ during functional/non-functional movements

DADV: 1. Precise technique required with exact JRR

  1. Incline of cusps leads to greater lateral forces (considered more destructive to underlying ridges)
  2. Requires more time and results not long-lasting (once slight ridge resorption occurs, adjustments needed)

Denture Manual Flashcards (Part 4 prep) (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions