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Complete Dentures > CD Test > Flashcards

CD Test Flashcards

1
Q

Fovea palatini in relation to vibrating line?

  1. Anterior
  2. Posterior
  3. Along the vibrating line
  4. Doesn’t exist
A

Posterior

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2
Q

Which doesn’t exist in House Classification?

  1. Hysterical
  2. Indifferent
  3. Philosophical
  4. Hostile
A

Hostile

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3
Q

What is the diameter of the sphere of Monson?

4 inches
8 inches
4 cm
8 cm

A

8 inches

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3
Q

Which one is not a stage?
Dough-like
Sandy
Stringy
Sticky

A

Sticky

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4
Q

What is the space between the dorsal surface of the tongue and the palate, at rest position?

Space of Donders
Masticatory space
Space of bolus
Space of Bonwill

A

Space of Donders

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5
Q

What is the ratio of the loss of height of maxilla to mandible, over 7 years without denture?

1:4
1:3
3:1
4:1

A

1:4

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6
Q

Mandible resorption compared with maxilla. Over 25 years with denture?

2x
4x
6x
8x

A

2x

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7
Q

What are the suprahyoid muscles that limit the lingual denture flange?

A

Geniohyoid and mylohyoid

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8
Q

Which muscle is not attached to the retromolar pad?

Buccinator
Temporalis
Masseter
superior constrictor muscle

A

Masseter

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9
Q

Denture stomatitis what medicine?

Miconazole
Hydrocortisone
Augmentin

A

Miconazole

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10
Q

What is the name of the curve from tip of lower canine passing through cusp tips of posterior teeth and arcs through condyle?

Compensating Curve
Curve of Spee
Curve of Monson

A

Curve of Spee

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11
Q

Which is true?

Decreased curve of spee = Shorter cusp height

Decreased curve of spee = Taller cusp height

Decreased curve of spee = fossa of mandible and ridge orientates more mesially

Decreased curve of spee = fossa of mandible and ridge orientates more distally

A

Decreased curve of spee= Shorter cusp height

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12
Q

Most severe and adverse effect of denture adhesives?

Zinc neurotoxicity
Xerostomia
Denture stomatitis
Tissue inflammation

A

Zinc neurotoxicity

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13
Q

What is the most common cause of allergic reaction to denture base?

Excess monomer
Polymethyl methacrylate
Candida

A

Excess monomer (Methyl methacrylate)

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14
Q

Most common cause of food trap at the lower buccal vestibule?

Thickness of flange
Border moulding
Slope of flange
Festooning of flange

A

Slope of flange

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15
Q

Buccal shelf - What’s true?

Bound externally by the external oblique line and internally by the slope of the ridge

Secondary stress-bearing area

Anatomical guide for the lateral border of flange

A

Bound externally by the external oblique line and internally by the slope of the ridge

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16
Q

Loss of vertical dimension will cause the mandible to?

Move backwards in relation to maxilla
Move forward in relation to maxilla
No effect
Irregular movement

A

Move forward in relation to maxilla

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17
Q

Which impression technique for sharp ridge?

Selective pressure
Extra pressure
Minimal pressure
All of the above

A

Minimal pressure

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18
Q

What’s the importance of Heberden’s nodes?

Makes it difficult for the patient to insert and clean denture

Difficult to take final impression for mandibular arch

Increase chance of ulceration of mandibular residual ridge

A

Makes it difficult for the patient to insert and clean denture

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19
Q

Torus must be surgically removed when?

The patient is cancerphobic and psychologically scared of it

Extends too palatally until it impinges on the posterior palatal seal

Has undercuts

All of the above

A

All of the above

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20
Q

How much of normal function does complete dentures give?

10%
30%
80%
50%

A

30%

21
Q

Which one doesn’t affect balanced articulation?

Cusp length
Inter-condylar guidance
Inclination of occlusal plane
Compensating curve

A

Inter-condylar guidance

22
Q

Why is balanced occlusion needed?

It isn’t
Facilitate eccentric movements
Reseats the denture when unilateral force is removed
Aesthetics

A

Facilitate eccentric movements

23
Q

What is the main retention force of maxillary complete denture?

Peripheral Seal
Adhesion
Cohesion
Atmospheric pressure

A

Peripheral Seal

24
Q

Position of lateral border of tongue at rest position?

Slightly below occlusal plane
Well above occlusal plane
Just above occlusal plane
In line with occlusal plane

A

Just above occlusal plane

25
Q

Most compressible mandibular area in your opinion?

Buccal shelves
Alveolar ridge
Retromolar pad
Premylohyoid region

A

Retromolar pad

26
Q

Which palatal throat form is favourable for a maxillary denture?

Class I
Class II
Class III
Does not affect retention

A

Class I

27
Q

Whistle syndrome

Change palatal contour to block airway
Smoothen the palatal slopes
Move anterior teeth down
Move posterior teeth lingually

A

Smoothen the palatal slopes

28
Q

What should be the relationship of teeth and tongue in producing the ‘t’ and ‘d’ sound?

A

Tip of the tongue touches the lingual surface of incisor and anterior palate

29
Q

Which of the following is true about maxillary incisor exposure?

Increases with age
Decreases with age
Remains the same

A

Decreases with age

29
Q

Which letter pronunciation is most important in complete dentures?
s
t
v
p

A

s

30
Q

Which anatomical feature determines the posterior extension of mandibular denture?

Bone
Muscle
Ligament
Soft tissues

A

Soft tissues (2/3 Retromolar pad)

31
Q

Denture mandibular movement compared to natural teeth?

Same
Very different from natural
More irregular than natural
Less irregular than natural

A

Same

32
Q

Patient with loose denture and soreness. What is the most important thing to do?

Check occlusion
Use denture adhesive
Trim soreness spots on denture
Retake impression

A

Check occlusion

33
Q

Why ‘s’ sound like ‘sh’?

Too large a space between the tongue and palate

Too narrow space between tongue and palate

Obstructed space

A

Too narrow space between tongue and palate

34
Q

How to minimise denture processing errors?

Remount and adjust occlusion intraorally

Remount and wait one week before adjusting

A

Remount and wait one week before adjusting

35
Q

What makes denture teeth look bigger and brighter?

Using a lighter shade
Set up more buccally
Set up more lingually

A

Using a lighter shade

36
Q

How to adjust the maxillary occlusal rim on an articulator?

Arbitrarily
Incisal pin
Facebow

A

Facebow

37
Q

Which one is for recording CR?

Gothic arc tracing
Wax
Facebow

A

Gothic arc tracing

38
Q

Patient’s head position when recording RVD?

Supine
Upright and unsupported
Upright and supported by a headrest
Doesn’t matter

A

Upright and unsupported by a headrest

39
Q

What is the most important retentive force for maxillary complete denture?

Adhesion
Cohesion
Undercuts
Border seal

A

Border seal

40
Q

Someone set up posterior teeth edge to edge. What happens?

A

No answer lol

Tipping of denture in function?

41
Q

What are the 8 components of the Prosthodontic Diagnostic Index for edentulous patients?

A
  1. Residual ridge height

Class III: 11-15mm

  1. Residual ridge morphology

Class III: Minimum influence to resist horizontal and vertical forces

  1. Muscle attachments in the mandible

Class III: Moderate influence of denture stability and retention

  1. MMR (Class I,II,III)
  2. Conditions requiring pre-prosthetic surgery
  3. Limited inter-arch space (18-20mm)
  4. Tongue anatomy
  5. Modifiers

TMD symptoms present or Hyperactive gag reflex

42
Q

According to Keng et al, distance of maxillary incisor from incisive papilla?

7.52mm
8.52mm
9.52mm
10.52mm

A

8.52mm

43
Q

Patient present with:

  1. Reduced lower facial height, with the appearance of over-closure
  2. Marked circumoral activity during swallowing
  3. Acute labiodental groove, low Frankfort mandibular plane angle
  4. Square gonial angle and prominent zygoma

Class I
Class II div 1
Class II div 2
Class III

A

Class II div 2

44
Q

Adhesion is?

Chemical attraction

Physical attraction between like molecules

Physical attraction between unlike molecules

A

Physical attraction between UNLIKE molecules

45
Q

Define posterior palatal seal

A

The soft tissue area at or beyond the junction of the hard and soft palates on which pressure within physiologic limits can be applied by a removable complete denture to aid in its retention.

46
Q

Functions of Posterior Palatal Seal

A
  1. Achieving an airtight seal between the denture and the hard and soft palate tissues.
  2. Enhance the retention of the denture by utilizing atmospheric pressure, preventing dislodgment during functional activities like eating and speaking.
  3. Contributes to the even distribution of forces across the denture-bearing area, improving comfort and reducing tissue irritation.
47
Q

Explain the problems with overextension of the posterior palatal seal.

A

Impaired Seal and Retention: Overextension of the seal can disrupt the proper sealing effect and compromise retention.

Tissue Irritation: Overextension of the posterior palatal seal can cause irritation and discomfort to the soft palate and the surrounding tissues, making it difficult for the patient to wear the denture comfortably.

Difficulty in Speech and Swallowing: Overextension can interfere with normal movements of the soft palate during speech and swallowing, leading to difficulties in pronunciation and impaired swallowing function. The patient may experience gagging or choking sensations.

48
Q

Three philosophies of impression taking technique

A
  1. Mucostatic Technique:
    Aims to record the soft tissue structures in a relaxed or undisturbed state

Procedure:
- The impression material is carefully loaded into the tray and placed in the mouth without putting pressure on the tissues.

Purpose:
- Captures the soft tissue structures in their natural, at-rest position.
- Provides an accurate representation of the mucosal tissues at rest.

  1. Mucodisplacement Technique: Involves displacing the soft tissues to create space for the impression material to capture an accurate impression of the underlying structures.

Procedure:
- Pressure is applied to displace the soft tissues and create a larger space for the impression material to flow and record the tissue details effectively.
- Displacement may be achieved using specific trays or special tray designs that apply pressure to displace tissues.

Purpose:
- Allows for more precise capture of tissue details by displacing soft tissues that may impede accurate impressions.

  1. Selective Pressure Technique:

Involves applying pressure selectively to specific areas of the tray to influence the displacement of soft tissues

Procedure:
- Pressure is applied selectively to specific areas of the tray to displace tissues in a controlled and strategic manner.
- The pressure points are carefully determined based on the individual patient’s anatomical and functional considerations.

Purpose:
- Provides a controlled displacement of tissues, optimizing the impression accuracy in critical areas.
- Helps achieve improved adaptation and retention of the prosthesis.

Complete Dentures (2 decks)

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