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Occlusion > Removable - Sheet1 > Flashcards

Removable - Sheet1 Flashcards

1
Q

What is occlusion?

A

Occlusion is the static contact between opposing teeth while the mandible is stationary.

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2
Q

What is articulation?

A

Articulation refers to the contact between opposing teeth when the mandible is in motion.

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3
Q

Name the four key functional requirements of complete dentures.

A

Stability, support, retention, and appearance.

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4
Q

How important is stability to dentures ?

A

Stability provides resistance to displacement during functional and parafunctional mandibular movements.

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5
Q

What is the role of support in dentures?

A

Support ensures proper base fitting against the oral tissues.

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6
Q

Why is retention important for dentures?

A

Retention ensures the denture stays securely in place under functional forces.

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7
Q

How does occlusion impact the stability of dentures?

A

Proper occlusion enhances stability by balancing forces during mandibular movements.

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8
Q

What are the two main categories of occlusal concepts?

A

Occlusion in centric position and occlusion in eccentric positions.

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9
Q

Define point centric occlusion concept.

A

The cusp tips fit precisely into the opposing fossae with defined incisal overlap.

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10
Q

What percentage of the population naturally has centric occlusion coinciding with centric relation?

A

10%

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11
Q

What is a “slide in centric”?

A

A discrepancy where centric occlusion and centric relation positions differ due to wear or dental issues.

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12
Q

Define long centric occlusion concept.

A

It provides freedom in centric occlusion by creating a flat area between centric relation and centric occlusion.

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13
Q

How is freedom in centric achieved in long centric occlusion?

A

By altering the fossae of the teeth anteroposteriorly and mediolaterally.

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14
Q

What is balanced occlusion?

A

Simultaneous and smooth gliding contacts of upper and lower teeth from centric to eccentric positions.

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15
Q

Name a factor influencing eccentric occlusal balance that is not under the dentist’s control.

A

Condylar guidance.

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16
Q

What is incisal guidance?

A

The relationship and angle of the anterior teeth during mandibular movements.

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17
Q

What role do compensating curves play in occlusal balance?

A

They enhance stability by aligning with natural mandibular trajectories.

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18
Q

Define bilateral occlusal balance concept.

A

Stable simultaneous contact of teeth in centric relation with smooth transitions to eccentric positions.

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19
Q

What minimal vertical overlap is used in bilateral occlusal balance?

A

0.5 to 1 mm.

20
Q

What are the advantages of bilateral occlusal balance?

A

Improves masticatory efficiency and enhances denture stability.

21
Q

Name one disadvantage of bilateral occlusal balance.

A

It is labor-intensive and requires frequent maintenance.

22
Q

What is the lingualized occlusion concept?

A

It directs occlusal forces lingually to enhance lower denture stability.

23
Q

What teeth are used in the lingualized occlusion concept?

A

Maxillary anatomical teeth and mandibular non-anatomical teeth.

24
Q

What is the primary occlusal contact in lingualized occlusion?

A

Palatal cusps of maxillary teeth occlude with mandibular fossae.

25
Q

Name one advantage of lingualized occlusion.

A

Better chewing efficiency than monoplane occlusion.

26
Q

Name one disadvantage of lingualized occlusion.

A

Requires grinding to achieve cusp-fossa contacts.

27
Q

What is the monoplane occlusion concept?

A

It uses cuspless teeth with flat occlusal surfaces set on a single plane.

28
Q

What is the recommended overbite and overjet in monoplane occlusion?

A

Minimal overbite and overjet.

29
Q

Why is monoplane occlusion suited for patients with ridge resorption?

A

Its flat plane adapts to anatomical changes over time.

30
Q

Name one advantage of monoplane occlusion.

A

Simplifies jaw records and tooth arrangement.

31
Q

Name one disadvantage of monoplane occlusion.

A

Reduced masticatory efficiency.

32
Q

What is the purpose of balancing ramps in non-anatomical teeth arrangement?

A

To maintain occlusal balance during excursions.

33
Q

How do compensating curves assist non-anatomical teeth arrangements?

A

They align teeth for stability and functional harmony.

34
Q

What is the curve of Spee?

A

An anteroposterior curve in the occlusal plane to enhance functional efficiency.

35
Q

What is the curve of Wilson?

A

A mediolateral curve to improve occlusal stability.

36
Q

Name an advantage of using compensating curves with non-anatomical teeth.

A

Prevents destabilizing forces during mandibular movements.

37
Q

What is the key disadvantage of using ramps or curves in setup?

A

Requires precise laboratory setup.

38
Q

Name the three most common concepts of eccentric occlusion.

A

Bilateral occlusal balance, monoplane occlusion, and lingualized occlusion.

39
Q

Why is bilateral occlusal balance challenging to maintain?

A

Frequent base adjustments are needed as dentures settle.

40
Q

How do compensating curves affect anterior tooth aesthetics?

A

They allow a more natural overlap of anterior teeth.

41
Q

What is the main focus of lingualized occlusion?

A

Stability of the lower denture through lingual force distribution.

42
Q

What is the role of anterior teeth in bilateral occlusal balance?

A

To ensure smooth transitions with minimal overlap and overjet.

43
Q

How does monoplane occlusion handle lateral stresses?

A

It eliminates them, reducing mucosal irritation.

44
Q

Why are flat teeth used in monoplane occlusion?

A

To adapt to variable occlusal relationships caused by ridge resorption.

45
Q

What is the main determinant of success in occlusal concepts?

A

Matching the patient’s anatomical and functional needs with the appropriate occlusal scheme.

Occlusion (6 decks)

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