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RCD 1001 > Edentulous State > Flashcards

Edentulous State Flashcards

(73 cards)

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1
Q

What are the three kinds of prosthodontics?

A
  1. Fixed Pros
  2. Removable Pros
  3. Maxillofacial Pros
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2
Q

What percent of procedures in GPD invove removable pros?

A

35%

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3
Q

What population does edentualism most affect?

A

most vulnerable populations – the aging and the economically disadvantaged

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4
Q

____ can be disabling and handicapping

A

Tooth Loss

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5
Q

What are some of the science categories that complete dentture pros requires

A
  1. Basic sciences
  2. Biomaterials
  3. Occlusion
  4. Esthetics
  5. Phonetics
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6
Q

A removable dental prosthesis that replaces the entire dentition and associated structures of the maxillae or mandible

A

Complte Denture

Replaces, teeth soft tissue and hard

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6
Q

What 3 main things does becoming edentulous depend on?

A
  1. Level of caries & periodontal disease
  2. Attiude, behavior, & dental attendance
  3. Socioeconomic status, drugs, etc.
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7
Q

Is the destruction of part of the facial skeleton accompanying distortion of soft tissue shape and varying degrees of functional inadequacy

A

Tooth loss

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8
Q

Represents a loss of the integrity of the masticatory system, which is frequently accompanied by adverse functional and esthetic sequelae.

A

The edentulous State

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9
Q

Teeth are involved in the ____ of food

A

Trituration; chewing

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10
Q

Explain the relationship of teeth and periodontum

A

Teeth are attached to the socket via periodontum (AB, PDL, Gingiva), which is attached to the alveolar bone

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11
Q

provides a resilient suspensory apparatus resistant to functional forces and allows teeth to adapt in response to stress.

A

Periodontun

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12
Q

What are the soft and hard connective tissues of the periodontum?

A

Soft= PDL & Lamina propia of the gingiva
Hard= Cementum and AB

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13
Q

What are the 2 principle functions of the periodontum?

A
  1. Support
  2. Postional adjustment of tooth
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14
Q

Natural dentition has the dependent function of ____ preception

A

Sensory Preception

Edentulous teeth no logner have proprioception

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15
Q

In natural dentition during mastication what 2 things occur?

A
  1. Biting forces are transmited through dentiton
  2. Forces increase steadily depending on what youre eating, reach peak then zero.
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16
Q

In natural dentition teeth are in occlsuion in what 3 situations?

A
  1. Deglutition (swallowing)
  2. Ocasional when mastication
  3. During clenching and grinding (parafunction)
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17
Q

What is tooth contact like in edentulous Pt?

A

All forces in prosthetic oclussion are not as controlled. Consequently time dependent repsonse of tissues supporting dentues is diffrent!

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18
Q

What is the basic challange in compelete dentures?

A

To understand the differences between the ways natural teeth and their artificial replacements are supported.

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19
Q

Explain 5 Biochemical support mechanims of periodontum

A
  • 45cm^2 functional support in each arch
  • Viscoelastic propertiees
  • Sensory mechanims
  • Bone remodeling
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20
Q

Explain 4 Biochemical support mechanims of Edentulous arch

A
  • Tissues are unsuited to play support
  • Maxillary mucosa support 22.96cm^2
  • Mandibular mucosa support 12.25cm^2
  • Denture bearing ridge becomes smaller as residual ridge resorbs
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21
Q

In an edentulous arch ____ has little tolerance or adaptability to denture wearing

A

Mucousa

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22
Q

What can worsen adaptibility of the mucousa in an edentulous arch for denture wearing?

A
  • Systemic disease:anemia, hypertension, diabetes, xerostomia

Any disturbance initiates inflammation

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23
Q

Compare natural teeth biting froce vs CD biting force

A

Natural teeth (200N) biting power VS Complete Denture (60-80N) max

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24
What 3 things does the residual ridge consist of?
1. Denture bearing mucousa 2. Submucosa & periodsteum 3. Underlying bone
25
What happnes after tooth extraction when the **alveoli (root location) is filled with new bone?**
Formation of the residual alveolar processes, forming the **residual ridge** | Foundation for dentures, lol, ill suited.
26
The alveolar ridge is subject to ongoing gradual ____
Resorption
27
resorbtipn ocurs most rapid where?
In the anterior mandible, doesa not occur evenly over ridge, rate varies depending on pt.
28
Bone resporbiton on the maxilla occurs?
Superio posterior direcrion
29
Bone resporbiton on the mandible occurs?
Inferior anterior direction
30
Overtime, due to bone loss you loose?
Verticle dimension of occlsuion; sunken face.
31
CDs should be designed in an attempt to decrease the ____ by its recurrent functional movements (increasing RETENTION).
**Decrease residual ridge reduction** to increase retention | More resorbtion= bigger bulkier denture
32
What are the 2 factors in CDs that doctor controls?
1. Optimal extension of denture base 2. Maximally intimate contact of the denture base to its basal seat
33
Teeth arrangement determined by the functional balance of the orofacial and lingual musculature | Occurpied by teeth & alveolar process until no teeth/
Neutral Zone | Filled with dentures,.
34
What 2 things retain and stabalize CDs?
Orofacial and tongue muscles
34
* help appreciate flavor of foods * Indirectly involved in the excitation of salivary and gastric secretions * Important to the complete digestion of foods
Mastication | CD are poor substitiution for good mastication
35
Occurs because of dislodging forces of the surrounding musculature, exposing the tissues to constant frictional contact
**Denture Movement** * CDs go under displacing, lifting, sliding, tilting, and rotational movements
36
What are 3 parafunctional considerastions of CDs
1. Havits involving repeated or sustained occlusal contacts to CDs together 2. Harmful to other components of masticator system 3. clenching causing sorness
37
* Horizontal & Vertical * Prolonged & excessibe * Diurnal & Nocturnal
Parafunction
38
* Verticle * Intermittent & light * Diurnal
Mastication
39
# Initial discomfort associated with new dentures: thrust against denture to secure it
Sore tongue
40
# Initial discomfort associated with new dentures: until patient is confident and muscles adapt for retention
Constant Clenching
41
# Initial discomfort associated with new dentures: Occurs when when Mandibular CD is not stable
Sore/tired lower lip
42
# Initial discomfort associated with new dentures: decreased blood flow (small vessels)
Sore mucosa
43
# Initial discomfort associated with new dentures: Cheek and tongue biting
Cheek and tongue biting
44
Morphological Changes with Edentulism are what 3 features?
1. Occur slowly 2. Depend on balance of osteoclas and osteoblast activity 3. TMJ involves in articular changes
45
* Occur as a result of **occlusal tooth surface loss** * Mainly due to **attrition and abrasion of occlusal surfaces** * It is very obvious on patients wearing **worn out dentures**
Face Height Changes
45
Causes a decrease in total face height
Residual Ridge Resorbtion
46
Ridge resorption then results in
Mandibular prognathism | **portrusion of lower jaw**
47
**Mandibular anterior ridge** resorbs ____ faster than Maxillary anterior ridge
4x faster on Mandibular | Much less vascularity
48
Denture teeth are postioned at certian heights to do what 3 things?
1. Restore function 2. esthetics 3. phonetics (speech)
49
What is a good guide for checking postioning of teeth and VDO?
Phonetics! Speech.
50
How far apart ridges will be and how the two jaws relate to one another
Verticle Dimension of occlsuion
51
# α Questionnaires & Patient Interview (“The Conversation”)
medical and dental history
52
Detection, assessment, and treatment of oral lesions and disease e.g., oral cancer screening
Intra and extra oal exam
53
Clinical factors influencing stability, retention, and support of complete dentures -Denture assessment -Prognosis
Prosthodontic assessment
54
What do you do at the 1st visit?
* Eval soft tissue & exsisitng dentues * Alginate preliminary impression of maxilla and mandibular arches
55
What do you do at the 2nd visit?
Fabricate custom trays (using 1st impressions) * Adapt trays to the mouth * Border mold trays using compound. * **Make final impressions using rubber base or VPS impression material**
56
What do you do at the 3rd visit?
* Establish maxillary plane * Establish **vertical dimension** * Centric relation record * Facebow recording * **Tooth selection** * Mount casts on the articulator
57
What do you do at the 4th visit?
* Eval esthetics & phonics * Evaluate midline and VDO * Patient Approval * Photos
58
What do you do at the 5th visit?
* Seat and use pressure indicator to check * Remount on articulator * Adjust occlusion * Patient education * 24 hr eval & adjusment * 1 week evall
59
LOOK **maxillary**
LOOK **maxillary**
60
# $ Look **mandible**
Look **mandible**
61
3 foundation of prosthetics
1. Retention 2. Support 3. Stability
62
**Resistance to vertical displacement** of the denture away from the denture bearing surface during function.
**Rentention ** Resistance to vertical displacement of the denture away from the denture bearing surface during function.
63
**Resistance to vertical forces of occlusion**. Factors of the bearing surface that resist or absorb occlusal loads during function.
**Support** Resistance to vertical forces of occlusion. Factors of the bearing surface that resist or absorb occlusal loads during function.
64
**Resistance to lateral displacement** of the denture during function.
**stability** Resistance to lateral displacement of the denture during function.
65
# These are all what? * Quality of oral mucosa * Alveolar ridge contour * Muscle attachments * Saliva * Neuromuscular control
FACTORS THAT IMPACT RETENTION, SUPPORT & STABILITY of denture
66
How muh larger do you want your tray to be than the residual ridge?
5mm larger
67
The mandibular tray should extend to the what?
Ascending ramus
68
A **negative registration** of the areas of the mouth over which the dental prosthesis (the complete denture) will rest
Impression
69
An impression made for the **purpose of making a preliminary cast** which is used for diagnosis and/or fabrication custom, individualized, impression tray
Preliminary Impression
70
The preliminary impression should be as accurate as possible and ____ of peripheral borders is preferred
overextension

RCD 1001 (9 decks)

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