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PRDP, Final > 17. Case Design Workshop Pt. I > Flashcards

17. Case Design Workshop Pt. I Flashcards

1
Q

Surveying

➢____
an analysis and comparison of the prominence of intraoral contours associated with the fabrication of a prosthesis
➢____
a paralleling instrument used in the construction of a prosthesis to locate and delineate the contours and relative positions of abutment teeth and associated structures
➢____
the specific direction in which a prosthesis is placed upon the abutment teeth

A

surveying
dental surveyor
path of insertion

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2
Q 
Surveying
➢Purposes
▪ Determine the path of \_\_\_\_ 
▪ Identify \_\_\_\_ planes
▪ Locate \_\_\_\_ area
▪ Evaluate \_\_\_\_ undercuts
A

insertion
guiding
undercut
soft tissue

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3
Q 
Surveying
➢Purposes
▪ Evaluate esthetics
▪ Determine \_\_\_\_ procedure/ tooth modification
▪ Delineate the \_\_\_\_ of contour 
▪ \_\_\_\_ the cast
A

restorative
height
tripoding

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4
Q

Determining Factors
➢Guiding planes
▪ ____ proximal surfaces to one another

➢Retentive areas or undercut
▪ only with a given path of ____
▪ minimum retention against reasonable ____ forces
▪ changing the path of insertion
▪ altering the ____ of the clasp by changing its design, size & length, or material

A

parallel
insertion
dislodging
flexibility

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5
Q

Determining Factors
➢ Interference
▪ may be eliminated by ____, extraction, modifying tooth surfaces, or restoration
▪ selecting a different path of insertion at expense of existing ____ and undercut
▪ modified with ____ with the path of insertion dictated by the interference

A

surgery
guiding plane
restorations

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6
Q 
Determining Factors
➢ Esthetics
▪ less \_\_\_\_ display
▪ missing anterior teeth - more \_\_\_\_ tilting
▪ fixed \_\_\_\_ denture
A

metal
posterior
partial

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7
Q

Surveying Procedures
1. Place and tighten the cast on the table.
Adjustable table should be allowed only in two directions, ____ or ____.
➢ Zero-Tilting: the occlusal ____ and the ____ should be parallel

A

A-P
lateral
plane
platform

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8
Q 
Surveying Procedures
2. Surveying for guiding planes 
▪ proximal surfaces: \_\_\_\_ tilting
▪ principal \_\_\_\_ first
▪ within a range that tooth modification is \_\_\_\_
A

A-P
abutment
possible

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9
Q

Then we would go to the opposite side so this is a class 2 modification 1. So we have a premolar here, we have three teeth that are abutment teeth so we found the ____ plane here and we carry that onto our surveryor.

A

ideal

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10
Q

Surveying Procedures
➢ bisect the ____ angle
3. Tilt the cast to the ____ line

A

maximum

bisecting

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11
Q

Surveying Procedures

4. Mark the established ____ tilt on the other side of the cast.

A

A-P

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12
Q

Surveying Procedures
5. Surveying for retentive undercuts
▪ ____ tilting along the established A-P tilt
▪ ____ retention
▪ ____ retention
▪ within a range that tooth modification is ____

A

lateral
minimum
uniform
possible

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13
Q

Surveying Procedures
➢ repeat the same procedure as for ____ tilt: bisecting the maximum angle created by ____ tilting
6. Mark the established ____ tilt on the front or rear of the cast

A

A-P
lateral
lateral

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14
Q

Surveying Procedures
7. Evaluate tissue ____
▪ severe tooth undercut
▪ soft tissue

A

interferences

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15
Q

Surveying Procedures
8. Esthetics
▪ ____ of denture base (A)
▪ ____ between abutment tooth and artificial tooth (B)

A

extension

black triangle

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16
Q

Surveying Procedures

9. Determining and ____ the final path of insertion

A

tripoding

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17
Q

Surveying Procedures

10. Carbon marking the ____ and tissue ____

A

survey line

undercut

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18
Q

Requirements for PRDP Design

____
Stability
____
Occlusion

> > >

____
Comfort
____

A

support
retention
esthetics
function

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19
Q 
Guidelines of PRDP Design
➢Support:
▪ rests next to \_\_\_\_ areas
except for RPI design
▪ \_\_\_\_ rests next to distal extension areas
▪ add rests as needed for \_\_\_\_ support
▪ make sure there will be no \_\_\_\_ of rests with opposing occlusion
▪ \_\_\_\_ connector expanded as needed
▪ altered cast impression as required
A 
edentulous
two
pericemental
interference
major
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20
Q 
Guidelines of PRDP Design
➢Stability:
▪ \_\_\_\_ connectors touching vertical surfaces of teeth wherever possible
▪ indirect retainers placed
▪ clasp assembly (rests, minor connectors, retentive and bracing arms)
not \_\_\_\_ with occlusion
▪ extension of bases
▪ \_\_\_\_ major connector
A

minor
interfering
rigid

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21
Q

Guidelines of PRDP Design
Retention:
 survey for ____” undercut
 create guiding planes to assure path of insertion that allows the retentive tip to be in ____” undercut
 Circumferential clasp in Class ____ or modification areas
 Wrought wire ____ or ____ next to distal extension areas

A

0.01
0.01
III
circumferential
I bars

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22
Q

Guidelines of PRDP Design
➢Esthetics:
▪ ____ when possible
▪ whenever possible, keep retentive tips in ____ and ____ portions (shoulders) of circumferential clasps on distals of anterior abutment teeth

➢Occlusion:
▪ Rests, minor connectors, and retentive arms planned to avoid ____ in centric or lateral movements

A

I bars
mesial
proximal

interference

23
Q 
Guidelines of PRDP Design
➢Comfort:
▪ \_\_\_\_ connectors kept away from speech areas
whenever possible;
 use \_\_\_\_ behind rugae,
 use \_\_\_\_ rather than linguoplates.

➢Function:
▪ chewing;
 recheck placement of all framework elements for occlusal interference,
▪ speaking;
 recheck placement of framework elements to avoid interference with speaking.

A

major
palatal straps
lingual bars

24
Q 
Periodontal Considerations
➢ Major connectors
▪ Maxillary major connectors
 \_\_\_\_ mm from the gingival margin 
 <6 mm: \_\_\_\_ (A)
A

6

linguoplate

25
Q

Periodontal Considerations
 Major connectors
 Maxillary major connectors
 beading at the periphery: ____ mm deep and wide, round (B)
 no relief except for ____ (C)
 metal highly polished (D)
tissue surface should ____ be highly polished except where it crosses the ____ (E)

A

0.5-1
gingival margin
not
gingival margin

26
Q 
Periodontal Considerations
▪ Mandibular major connectors 
• \_\_\_\_ mm from the gingival margin
• <3 mm: \_\_\_\_ (A) • metal highly polished
A
A

3

linguoplate

27
Q

Periodontal Considerations
▪ Mandibular major connectors
• ____ to prevent soft tissue impingement (B)
• ____ gauge (____ mm) sheet wax

A

relief
32
0.2

28
Q

Periodontal Considerations
▪ Mandibular major connectors
• tissue surface should be highly ____. (C)

A

polished

29
Q 
Periodontal Considerations
Minor Connectors
 junction of rest and minor connector: at least \_\_\_\_ mm
 \_\_\_\_ mm between minor connectors
 minimal gingival coverage: \_\_\_\_°
\_\_\_\_ of gingival tissues
A

1.5
5
90
relief

30
Q

Periodontal Considerations
➢ Clasps
▪ ____ tooth and gingival coverage to reduce plague accumulation

▪ bar clasp
 never ____ soft tissues
 horizontal approaching arm: ____ mm from the
gingival margin
 superior border of the bar: at least ____ mm from the
gingival margin 
____ (C)

A 
minimal
impinge
3-5
3
90
31
Q 
Periodontal Considerations
▪ circumferential clasp
 at the junction of \_\_\_\_ and \_\_\_\_
 should not contact free \_\_\_\_
 located in the occlusal 1/3 may increase \_\_\_\_
A

middle 1/3
cervical 1/3
gingival margins
forces

32
Q 
Periodontal Considerations
➢ Rests
▪ direct forces along the \_\_\_\_ of the tooth (A)
▪ \_\_\_\_ rest seat (B)
▪ at least \_\_\_\_ mm at the junction
A

long axis
positive
1.5

33
Q 
Periodontal Considerations
➢ Bases
▪ optimal extension
 maximize the tissue support and stability
▪ adjacent to abutment teeth
 expose \_\_\_\_ tissue (A)

▪ internal finish line
 ____ polished metal B contact (B): finishing index
tissue stop

A

gingival

highly

34
Q

Biomechanical Considerations for PRDP Design
 Direct Retention
 ____ clasp retention
 adhesion and cohesion – maximum coverage and intimate ____
 frictional retention – ____
 neuromuscular control – lip, cheek, tongue

A

minimum
contact
guiding plane

35
Q

Biomechanical Considerations for PRDP Design
➢ Clasp position
▪ quadrangular configuration  Kennedy class III
 one as far as ____; the other as far ____ as esthetics and space permit

A

posteirorly

anteriorly

36
Q

Biomechanical Considerations for PRDP Design
➢ Clasp position
▪ triangular configuration
 Kennedy class II
 one as far as ____; the other as far ____ as esthetics and tooth contour permit

A

posteriorly

anteriorly

37
Q 
Biomechanical Considerations for PRDP Design
➢ Clasp position
▪ linear configuration
 Kennedy class I
 the most \_\_\_\_ teeth 
 \_\_\_\_ retainer
A

posterior

indirect

38
Q

Biomechanical Considerations for PRDP Design
➢ Clasp design
▪ basic cast ____ vs. ____
▪ wrought wire ____ clasp

A

circumferential
RPI
combination

39
Q 
Biomechanical Considerations for PRDP Design
➢ Splinting of abutment teeth
▪ increase \_\_\_\_ area
A
   ▪ \_\_\_\_ or short root (A) 
▪ \_\_\_\_ or lone
standing abutment (B)
▪ \_\_\_\_ stabilization with partial denture (C)
A

periodontal
tapered
intermediary
cross-arch

40
Q 
Biomechanical Considerations for PRDP Design
➢ Indirect retention
▪ Kennedy class \_\_\_\_
▪ Kennedy class \_\_\_\_
➢ Auxiliary rests 
▪ \_\_\_\_
A

I and II
IV
lingual plate

41
Q

Biomechanical Considerations for PRDP Design
➢ Occlusion
▪ MD ____ and the number of teeth to be replaced
▪ ____ cutting surface for chewing efficiency
▪ no ____ cusp incline

A

width
sharp
steep

42
Q

Biomechanical Considerations for PRDP Design
➢ Denture bases
▪ maximum ____
▪ accurate ____ to residual ridge

A

coverage

adaptation

43
Q 
Biomechanical Considerations for PRDP Design
 ➢ Major connectors 
▪ \_\_\_\_
▪ \_\_\_\_ at each side of lingual plate
▪ \_\_\_\_ support from rests
A

rigid
rests
vertical

44
Q

Biomechanical Considerations for PRDP Design
➢ Minor connectors
▪ ____
▪ intimate contact between ____ and minor connector
 distinct path of ____ to help retention
 improved ____

A

rigid
guiding plane
insertion
stability

45
Q

Biomechanical Considerations for PRDP Design
 Rests and rest seats

A

90
ball-and-socket
stress

46
Q

PRDP Design Procedure
1. Selection of Abutment Teeth
▪ Teeth adjacent to the ____ ridges in general
▪ Teeth for ____ retainer (s)

A

edentulous

indirect

47
Q

PRDP Design Procedure

  1. Check the occlusal contact on the abutment tooth.
    ▪ Check out the available space for the rest and minor connector.
    ▪The rest seats on the upper anterior teeth should be placed ____ below the occlusal contacts to avoid the occlusal interferences.

YES:
Place a normal ____ seat
accompanied with the proposed clasp system.

NO:
▪ Relocating the rest seat, for instance, mesial to distal or crescent cingulum rest seat to lug (ball) rest seat on anterior teeth
▪ Preparing ____ rest seat, if allowed.
▪ Doing enameloplasty on the opposing tooth
▪ Fabricating ____ crown

A

gingivally
rest
deeper
survey

48
Q

PRDP Design Procedure

  1. Survey the cast for a desired path of insertion
    ▪ Start with ____ – Place the occlusal plane parallel to the surveying platform
    ▪ Find out the parallel ____ on the proximal and lingual surfaces as well as tooth surfaces that the metal framework, minor connector, will contact. -> Use ‘____ rod’.
    ▪ Find out the retentive undercut for the proposed clasp system on each abutment, most often ____”, at the mesio or disto-facial line angle area
    ▪ at the cervical 1/3. -> Use ‘____ gauge’.
    ▪ Indicate any soft tissue ____ that may
    interfere with placing the PRDP
    ▪ Take esthetic consideration for anterior edentulous area.

YES:
Lock the surveying table and ____ the path of insertion.

NO:
▪ Different clasp system with a different ____
▪ Different path of ____ for the proposed clasp system
▪ Lingual undercut – retentive arms should be equilaterally or ____ opposed.
▪ ____ crown
▪ Preparation of undercut – dimple or depression

A 
zero tilt
guiding planes
analyzing
0.01
undercut
undercuts
tripod
undercut
insertion
diagonally
survey
49
Q

PRDP Design Procedure

  1. Scribing the survey lines
    ▪ Replace the surveying tool with ‘____ marker’.
    ▪ Scribe them on the areas that the ____ components may contact. In other words, on the facial, lingual and proximal surfaces as well as soft tissue.
A

carbon

metal

50
Q

PRDP Design Procedure

  1. Outline the PRDP components in ____
    ▪ Denture base and denture base minor connector
    ▪ Major connector
    ▪ Rest seats
    ▪ Clasp assembly – retentive and reciprocating arms
    ▪ Minor connectors that connect all metal components
A

red

51
Q

PRDP Design Procedure

  1. Indicate the areas that interfere with placing the PRDP
    ▪ Mark them on teeth in ____ with solid line circle and spaced diagonal lines or blue arrows.
    ▪ These areas are where ____ has to be considered. This procedure will be done by ____ clinically (tooth modification on survey & design form).
    ▪ If the amount of enameloplasty should be more than 0.03” or there is post-operative sensitivity you may need a ____ crown.
A

blue
reshaping
enameloplasty
survey

52
Q 
Tooth Supported vs. Tissue Supported
➢Tooth supported: Kennedy Class III and IV
▪ Support: \_\_\_\_
▪ Direct retainer: \_\_\_\_ clasp
▪ Indirect retainer: no \_\_\_\_
▪ Stability: \_\_\_\_ connector and rigid portion of clasp
▪ Impression: \_\_\_\_ form 
▪ Denture base: \_\_\_\_ or acrylic
A 
teeth
cast circumferential
need
minor
anatomical
metal
53
Q

Tooth Supported vs. Tissue Supported

➢ Tissue supported: Kennedy Class I and II
▪ Support: teeth and ____
▪ Direct retainer: ____ clasp, I-bar
▪ Indirect retainer: ____
▪ Stability: ____ connector, rigid portion of clasp, and denture base
▪ Impression: ____ form, ____ cast impression
▪ Denture base: ____

A 
edentulous ridge
wrought wire
yes
minor
supporting
altered
resin
54
Q

Best Clasp Design
 Longitudinal studies indicate there is no “____” clasp design
 All act the same for the ____ of the abutment over time

A

best

same

PRDP, Final (21 decks)

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