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DaDaDaDentures > Lecture 5-Support & Occlusion > Flashcards

Lecture 5-Support & Occlusion Flashcards

1
Q

WHAT is the RESISTANCE to forces at a RIGHT ANGLE to the occlusial surface of a denture (tissue ward movement of the denture)?

A

SUPPORT

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2
Q

The quality of _______ depends on the THICKNESS of the soft tissue that covers the bone

A

SUPPORT

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3
Q

What are the two SUPPORT areas of the maxillary arch? What is the PRIMARY support area?

A

1.Crest of the ridge 2.HARD PALATE (PRIMARY support area)

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4
Q

What are the 3 SUPPORT areas in the mandibular arch? What are the two PRIMARY?

A

1.Buccal Shelf (PRIMARY) 2.Retromolar pads (PRIMARY) 3.Slopes of the ridge (not primary :)

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5
Q

Maximum SUPPORT is achieved by maximum WHAT?

A

TISSUE COVERAGE (hence a proper final impression)

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6
Q

What is the resistance to HORIZONTAL displacement by functional forces?

A

STABILITY

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7
Q

What are the 4 factors affecting stability?

A

1.Anatomy of the residual ridge 2.Flanges of the Denture 3.Posterior Teeth 4.Occlusion

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8
Q

When looking at ideal anatomy to aid in STABILITY, we are looking for _____ ridges width and height (mand and max) and ______ ridges on the mand and max.

A

equal….parallel

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9
Q

Higher and more ________ the FLANGES are to the occlusal surfaces the more STABLE is the denture to HORIZONTAL forces

A

perpendicular

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10
Q

For ideal stability the posterior teeth should be on the ______ (______) of the residual ridges.

A

crest (center)

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11
Q

What is the best type of occlusion for ideal STABILITY (horizontal forces)?

A

BALANCED occlusion

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12
Q

What is the resistance of the denture to DISLODGMENT?

A

RETENTION

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13
Q

Factors affecting Denture RETENTION: ________- the molecular attraction between UNLIKE molecules

A

ADhesion

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14
Q

Factors affecting Denture RETENTION: _______-the molecular attraction between LIKE molecules

A

COhesion

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15
Q

Factors affecting Denture RETENTION: The GREATER the area of contact between the denture base and the mucosa and the _______ the salivary film, the GREATER the Magnitude of the retentive forces as a result Of ______ and ______

A

Thinner….Adhesion and Cohesion

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16
Q

Factors affecting Denture RETENTION: Atmospheric pressure- Is the _______ pressure due to the weight of the atmosphere upon surfaces

A

hydrostatic…WTF?

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17
Q

Factors affecting Denture RETENTION: What needs to be present to utilize ATMOSPHERIC pressure as a retentive force to keep border tissues in contact with the denture base

A

a PERIPHERAL SEAL

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18
Q

Factors affecting Denture RETENTION: ________ is the SIMULTANEOUS contact of the Maxillary and the Mandibular posterior teeth during various jaw movements

A

BALANCED OCCLUSION

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19
Q

Factors affecting Denture RETENTION: What prevents tipping or rotating or the denture base in relation to the supporting structures?

A

BALANCED OCCLUSION

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20
Q

What do you need to complete a balanced occlusion when working with monoplane teeth?

A

balancing RAMPS

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21
Q

How many points of contact do you need all lateral excursions to officially have bilateral balance?

A

3

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22
Q

What are the two types of non-anatomic occlusion?

A

Monoplane (neutrocentric) and Balanced (balancing ramp_

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23
Q

Why do we have monoplane occlusion?

A

to reduce the horizontal forces

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24
Q

Typically when selecting Non-Anatomic denture teeth the ________ concept is used as a guide for setting the teeth

A

neutrocentric

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25
Q

This concept of occlusion assumes that the anterior- posterior plane of occlusion should be parallel to the denture foundation area and not dictated by condylar inclination.

A

neutrocentric

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26
Q

In neutrocentric occlusion, the anterior-posterior plane of occlusion should be parallel to the _________

A

denture foundation area

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27
Q

IS neutrocentric occlusion dictated by condylar inclination?

A

NOOOOO (dictated by plane of occlusion parallel to foundation area)

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28
Q

In a neutrocentric concept the plane of occlusion is completely ______ and ______.

A

FLAT and LEVEL

29
Q

Do we have Curve of Wilson or Curve of Spee incorporated into the setting of neutrocentric teeth?

A

NO

30
Q

Do we have vertical overlap in neutrocentric occlusion?

A

NO (edge to edge)

31
Q

Does the patient incise a food bolus? What types of eating movements does the patient have to learn?

A

NO incise of bolus….pt must be a “chopper” and can no longer chew or grind

32
Q

When setting neurtocentric teeth the horizontal and lateral condylar guidance should be set at _____.

A

ZERO

33
Q

Neturocentric: In Class II patients the mandible tends to travel farther _______ in function and consequently more ________ overlap is necessary

A

anteriorly….horizontal overlap

34
Q

Neutrocentric: Class III patients often demonstrate little or no ______ movement of the mandible during function. Consequently, little or no ______ overlap is developed in the set up.

A

anterior….horizontal

35
Q

The mandibular occlusal table should end prior to the _________.

A

ascending ramus

36
Q

The distal surface of most posterior maxillary denture tooth should extend __-__mm distal to the most posterior mandibular denture tooth.

A

1-2mm

37
Q

WHAT feature MUST YOU HAVE to prevent biting of the cheek/corner of the mouth?

A

Horizontal overlap in the posterior!

38
Q

The flatness of the maxillary ________ is provided by the flat buccal and lingual cusps, BOTH are going to contact the occlusal plane

A

PREMOLARS

39
Q

What is Christiansen’s phenomenon?

A

the STEEPER the condylar inclination, the GREATER the posterior discrepancy in EXCURSION

40
Q

What does Christiansen’s phenomenon mean for getting balanced occlusion with a monoplane set up?

A

we need BALANCING RAMPS! to fill the gap of the posterior discrepancy in excursion

41
Q

Lateral or tipping forces tend to have an unfavorable effect on denture ______

A

STABILITY

42
Q

Bilateral balance decreases the transmission of ______ tipping forces

A

LATERAL

43
Q

_________ occlusion attempts to further decrease tipping forces by minimizing the effect of incline plane contact between the maxillary and mandibular denture.

A

monoplane

44
Q

Bilateral balanced occlusion when using _____ degree cusped teeth is obtained by using balancing ramps.

A

zero

45
Q

What are the two sources of inclined plane contact?

A

1.CUSPAL INCLINES of the maxillary and mandibular denture teeth 2.verticle overlap of the maxillary and mandibular ANTERIOR teeth

46
Q

What are the two occlusal schemes we can achieve lingualized occlusion?

A

1.Bilateral Balanced 2.Maxillary anatomic opposing mandibular non-atomic

47
Q

Lingualized occlusion: the dominant max lingual cusp and the simple mand fossa make a _______ and ______ type occlusal pattern.

A

mortar and pestle

48
Q

Lingualized occlusion-there should be about a __mm space between the lingual inclines of the _____ cusps of the max teeth and the buccal cusps of the mandibular teeth.

A

1mm…buccal (essentially 1mm horizontal overlap)

49
Q

In lingualized occlusion- There should be NO ______ cusp contacts of posterior teeth in centric or in lateral excursion.

A

buccal

50
Q

What is the primary difference between lingualized occlusion with anatomical VS non-anatomical mandibular teeth?

A

non-anatomical mandibular teeth uses a NEUTROCENTRIC concept because we are not attempting to balance occlusion

51
Q

WHAT ARE THE 5 FACTORS OF THE HANAU QUINT??

A
  1. Condylar Incline/Guidance 2.Incisal Guidance 3.Curves (spee,wilson) 4.Cusp Angles/Heights 5.Plane of occlusion/orientation
52
Q

It is a measurement of the path traveled by the condyles in the TMJ area during various mandibular movements.

A

Condylar guidance

53
Q

Average inclination for complete denture patient is ____ degrees

A

30 degrees

54
Q

How do you record a condylar inclination? What appointment?

A

Protrusive check-bite record…the TRY-in appt (4th)

55
Q

_______: angle formed by drawing a line in the sagittal plane between the incisal edge of the
maxillary and mandibular teeth when teeth are in CO and the horizontal plane…WHY do we CARE???

A

Incised Guidance Angle…helps set the anterior teeth so they don’t contact during centric and eccentric movements

56
Q

What is THEILMAN’s formula???

A

C=Condylar Inclination x Incisal Guidance / OccPlane x Cuspal Inclination x Comp Curve

57
Q

What does C equal in Thelmans formula?

A

C = balanced occlusion

58
Q

Thielman’s formula–WHEN all five factors are in balance, all teeth contact in ________ positions

A

excursive

59
Q

Hanau’s Quint: if the incised guidance is increased what happens to the posterior teeth?

A

they will disocclude

60
Q

Its advised when using zero degree cusps to decrease the ________-

A

incised guidance (by decreasing Verticle overlap)

61
Q

What is the ONLY factor in Thielman’s formula the dentist cannot change?

A

Condylar Inclination

62
Q

Of all the Hanau’s Quint/Thielman’s factors, What is the most recommended adjustment for setting denture teeth?

A

MINIMIZE INCISAL GUIDANCE

63
Q

Thielman’s formula: can you alter Occlusial plane very much?

A

NO, functional requirements dictate position

64
Q

Thielman’s formula: what is the recommendation for the amount of cuspal inclination?

A

REDUCE cuspal inclination to help reduce horizontal forces of occlusion

65
Q

Thielman’s formula: The __________ is very helpful in obtaining balanced occlusion and depending on the posterior tooth forms it can EASILY be corrected to facilitate posterior tooth contacts in eccentric positions.

A

Compensating Curve

66
Q

What are the two factors in Thielman’s formula that are easiest to alter to obtain balanced occlusion?

A

incised guidance and compensating curve

67
Q

HAHA in the PPT (not the manual)…WHERE is the Max 1st molar- MB cusp? ML? DB cusp? DL cusp?

A

MB-on the plane, ML-on the plane, DB-.5mm off, DL-.5mm off

68
Q

How far off the occlusal plane is the max second molar?

A

1mm

69
Q

How many contacts do we need in working side and balancing side to officially have balanced occlusion?

A

2 working, 1 balancing

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