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Removable Pros - ABGD Oral Boards > Removable Pros - Mock Oral Exam > Flashcards

Removable Pros - Mock Oral Exam Flashcards

1
Q

What are factors you evaluate in assessing a complete denture patient?

A
  • Arch size/form
  • Inter-arch space
  • Muscle tone
  • Saliva quantity/quality
  • Ridge relationships/ridge form/ridge size
  • Throat form
  • Tongue position
  • Vestibular depth
  • Bound vs movable tissue
  • Tori
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2
Q

How do you decide whether a patient will be a successful denture wearer?

A
  • Largely by history and clinical evluation
  • Check stability and occlusion
  • Evaluate hard/soft tissues
  • Talk to patient
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3
Q

What are goals with treating a patient with a denture?

A
  • Preserve bone
  • Provide support/stability/retention
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4
Q

What are some alternative to wearing dentures?

A
  • Re-make/reline
  • Implant-supported prosthesis
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5
Q

What are the primary stress bearing areas for a maxillary complete denture?

A
  • Maxillary RESIDUAL ridges
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6
Q

What are the primary stress bearing areas for a mandibular complete denture?

A
  • Buccal shelves
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7
Q

Name 3 different impression techniques for complete dentures

A
  1. Pressure less (mucostatic)
  2. Functional
  3. Selected Pressure
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8
Q

Describe Mucostatic Technique?

A
  • Little or no pressure on ridge
  • Employs ZOE, multiple impressions and metal bases
  • Well short of conventional borders
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9
Q

Describe the functional technique…

A
  • Iimpressions made under biting pressure (not recommended since dentures would then be made to compressed tisses)
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10
Q

Describe the Selective Pressure Technique…

A
  • (FAVORED) Blackout wax is placed on preliminary cast so custom tray has additional space for impression material in areas that should be subjected to less pressure
  • For example: crst of mandibular ridge
  • This additional material is thought to exert less pressure while making impression
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11
Q

What are 6 purposes/benefits/reasons for a post-paltal seal?

A
  1. Maintains tissue contact during speech and swallowing
  2. Increases denture retention (maintains peripheral seal/atmospheric pressure)
  3. Compensates for polymerization shrinkage
  4. “Sunken” border less conspicuous to tongue
  5. Less gagging
  6. Cross-sectional strength
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12
Q

What are some advantages of/a rationale for doing overdentures?

A
  • Maintain alveolar bone
  • Proprioception
  • Increased masticatory efficiency
  • Increased stability and support
  • Psychological
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13
Q

What is Lingualized Articulation?

A
  • Articulates the maxillary lingual cusps with the mandibular occlusal surfaces in centric working and non-working positions
  • Anatomic or semi-anatomic maxillary tooth opposing a semi-anatomic mandibular tooth in which cross arch balance is achieved (balanced) or opposing non-anatomic mandibualr tooth in which balance is not achieved (non-balanced)
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14
Q

What are advantages of Lingualized Articulation?

A
  • Esthetics
  • Simple technique
  • Reduced lateral forces
  • Can be used in Class 2, 3, crossbite, balanced or non-balanced situations
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15
Q

Name 6 chracteristics of combination syndrome…

A
  • Maxillary anterior ridge resorption
  • Downgrowth of tuberosity
  • Maxillary papillary hyperplasia
  • Mandibular anterior extrusion
  • Mandibular posterior ridge resorption
  • Over-closure of OVD
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16
Q

Name at least five factors that aid in retention of a maxillary complete denture…

A
  • Adhesion
  • Cohesion
  • Capillary attraction
  • Oral/facial musculature
  • Interfacial surface tension of saliva
  • Atmospheric pressure/peripheral seal
  • Peripheral seal
  • Occlusion
  • Mechanical locking (retrymylohyoid fossa)
  • Gravity
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17
Q

If a patient with multiple missing teeth, what are some factors that would make you tend toward removable prosthesis rather than fixed?

A
  • Less than ideal oral hygiene and high caries risk
  • Long span (re: Ante’s Law)
  • No terminal abutment
  • Poor root to crown ratio (<1:1)
  • Inadequate crown hight (unless you’re willing to do crown lengthening)
  • Large vertical soft tissue defect
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18
Q

Please describe the Kennedy Classification system for partially edentulous arches…

A
  • Kennedy Class I: Bilateral edentulous areas located posterior to the natural teeth
  • Kennedy Class II: A unilateral area located posterior to the remaining natural teeth
  • Kennedy Class III: A unilateral edentulous area with natural teeth remaining both anterior and posterior to it
  • Kennedy Class IV: A single bilaeral (crossing the midline), edentulous area located anterior to the remaining natural teeth
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19
Q

How many rules did Applegate describe?

Can you give me 5 of them?

A
  1. Classification is done post extraction
  2. 3rd molars generally don’t count
  3. 3rd molars, if used as abutments, do count
  4. If a 2nd molar is missing and will not be replaced, it doesn’t count
  5. The most posterior edentulous space always determines the classification
  6. Designation of modification spaces
  7. The extent of a modication space isn’t considered, only the number of spaces
  8. Class IV RDP cannot have modification spaces
20
Q

Discuss the appearance of a properly designed circumferential clasp used for rentention…

A
  • Clasp should originate from framework above the height of contour
  • Retentive tip should be directed occlusally
  • Should terminate at line angles
  • Should be positioned as far apically as possible
21
Q

What alternative could you use if your patient was allergic to nickel?

A
  • Vitallium (chromium/cobalt)
  • Type IV Gold
22
Q

What are acceptable clasps for distal extension removable partial dentures?

A
  • Comnbination clasp (cast lingual bracing arm, distal rest, wroght wire soldered to framework into M undercut)
  • 18 gauge cast round clasp (same design as above)
  • RPI, RPA
  • Reverse circlet (mesial rest, lingual bracing arm or plating, circumferential clasp from rest into DF undercut)
  • Rudd Design: Distal rest, lingual plating or bracing arm, modified T-Bar into DF undercut
23
Q

Name 3 advantages to an implant-assisted RDP…

A
  • Distal extension suport
  • Reduced bone resorption
  • Elimination of unesthetic retention elements
  • Descreased stress on abutments
  • Enhance support and rentention
  • Improved comfort and patient satisfaction
24
Q

When planning an implant-assisted RDP with a distal extension, where should the implant be located?

A
  • As far distal as reasonable or at least as far as the most distal tooth being replaced
25
Q

What is the minimum restorative space required for the use of an implant in an implant assisted RDP?

A
  • 10 mm
  • 2 mm tooth + 2 mm acrylic + 3 mm attachment + 3 mm of gingiva
26
Q

A Class I removable partial denture should have 7 components. Name the 7 components…

A
  1. Major connector
  2. Minor connector
  3. Rests
  4. Direct retainer
  5. Stabilzing or reciprocal elements (as part of a clasp assembly)
  6. Indirect retainers (if the prosthesis has distal extension bases)
  7. One or more bases, each supporting one/several replacement teeth
27
Q

Describe the purpose of an indirect retainer in your own words. What is the preferred location in an RDP design for an indirect retainer?

A
  • The conmponent of a RPD that assists the direct retainer in preventing the displacement of the distal extension base in an occlusal direction (away from the tissue) or from rotating around a fulcrum line. Location should be perpendicular to and as far away from the fulcrum line as possible (usually mesial of 1 premolar or cingulum of canine)
28
Q

What is the primary requirement of a major connector?

A

Rigidity

29
Q

Describe 3 acceptable maxilary major connectors…

A
  1. Anterior-posterior paltal strap - 5 mm
  2. Palatal strap
  3. Full palatal coverage
30
Q

What are the minimum dimensions that will allow the use of a lingual bar major connector?

A
  • 3 mm from the gingival margin and at least 4 - 5 mm occlusogingival height
31
Q

How do you record this dimension regarding measuring for a lingual bar?

A
  • Use a perio probe to transfer the dimension to the cast with the floor of the mouth activated
32
Q

Give 4 clinical situations that indicate use of a lingual plate, rather than a lingual bar as a major connector…

A
  1. When a lingual frenum is high or the space avilable for a lingual bar is limited
  2. In class I situations in which the residual ridges have undergone excessive vertical resorption. Flat residual ridges offer little resistance to the horitzontal rotational tendencies of a denture
  3. For stabilizing periodontally weakened teeth, splinting with a lingoplate can be of some value when used with definite rests on sound adjacent teeth
  4. When the future replacement of one or more incisor teeth will be facilitated by the addition of retention loops to an existing linguoplate
33
Q

Describe the physical characteristics of an occlusal rest seat preparation on a maxillary premolar…

A
  • Triangular and concave shaped
  • Inclined toward the center of the tooth
  • One third to one half the mesial distal dimension
  • One half the dimension between the cusp tips
34
Q

Name the requirements of a clasp assembly…

A
  • Retention
  • Support
  • Stability
  • Reciprocation
  • Encirclement
35
Q

Name 5 factors that affect the flexibility of RDP clasps…

A
  1. Length
  2. Taper
  3. Diameter
  4. Cross-Sectional Form
  5. Material
36
Q

Explain the purpose of the mesial rest on tooth #21…

A

Indirect Retainer

37
Q

What is the purpose of indirect retention?

A
  • Prevents the displacement of the distal extension base when the denture base moves away from the tissues in pure rotation around the fulcrum line
38
Q

Where is the indirect retainer generally located?

A

Anterior to the fulcrum line

39
Q

When do you prepare guiding planes on teeth not receiving cast restorations if your case involves survey crowns?

A

Prior to crown preps for survey crowns

40
Q

Why do you prepare guiding planes prior to crown preps if your case involves survey crowns?

A
  • Survey crown guide planes are made parallel to path of insertion established by guiding planes of other teeth
  • It’s easier than trying to prep guide planes after survey crowns are cemented!
41
Q

According to Stewart, a retentive clasp constructed of cast chrom is normally placed in a ___ inch undercut?

A

0.01 inch

42
Q

Clasps made of wrought wire normally are positioned in an undercut of ____ inch

A

0.02 inch

43
Q

Which maxillary major conector is generally avoided?

Why?

A
  • Horseshoe shaped palatal connector
  • Too flexible
44
Q

Are you aware of any classification system related to the mental attitude of denture patients? Please describe the classification and how it might affect our treatment…

A

House’s Classification (1935)

  • Exacting - Excellent
  • Philosphical - Good with education
  • Indifferent - Unfavorable
  • Hysterical (agressive) - Unfavorable
45
Q

How do our goals in achieving an ideal occlusal scheme differ between complete denture restorations and fixed restorations?

A
  • We generally try to develop a balanced (cross arch and cross tooth) articlation in complete dentures and a mutually protected articualtion in fixed restorations (anteriors protect posteriors in eccentric, posteriors protect anteriors in MIP). Ideally, centric occlusion and MIP should be coincident.
46
Q

What are the components of Ticonium?

A

Nickel and Chromium

Removable Pros - ABGD Oral Boards (3 decks)

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