Intro Lectures Before Class Flashcards
What is the real name for RPD?
“PRDP”
partial removable dental prosthesis
What is the real name for CD?
“CRDP”
complete removable dental prosthesis
What are the three main types of RPDs?
- cast metal frame
- acrylic
- flexible base
Why is a flexible base not great?
- outward pressure on abutment teeth when biting
- abutment teeth have lateral movement and issues
What are the two types of metals that cast metal frames are made from?
CoCr - cobalt chromium
NiCr - nickel chrominum
Why is CoCr used more often in cast metal frames than NiCr?
CoCr is used more often, because patients may have Nickel sensitivity
class I
class II
class III
class IV
class II
Which would work better?
left
- right will not have retention and the tooth will shift
What type of material is most commonly used for RPDs made in UMKC?
A. Co-Cr
B. Ni-Cr
C. Gold
D. Valplast
A. Co-Cr
What is this called?
A. clasp assembly
B. major connector
C. minor connector
D. clasp
B. major connector
What is prosthetics?
art or science of replacing absent body parts
What is prosthodontics?
branch of dentistry that pertains to the replacement of missing teeth and oral tissues
What are the three prosthodontics divisions?
– Fixed prosthodontics
– Removable prosthodontics
* Complete
* Partial
– Maxillofacial prosthetics
What is a dental prosthesis?
artificial replacement of 1 or more teeth and/or associated structures
What is a fixed partial denture (FPD)?
– Prosthesis replacing teeth in partially dentate arch.
– Not designed to be removed by patient
What is a removable partial denture (RPD)?
– Prosthesis replacing teeth in partially dentate arch.
– Designed to be removed by patient
What is an abutment?
Tooth used to support prosthesis
What is a residual ridge?
– Residual bone & soft tissue covering that remains after tooth loss.
– Part of support for certain types of RPDs
What is centric relation?
Maxillomandibular relationship in which the condyles articulate with the thinnest avascular portion of their respective disks with the complex in the anterior-superior position against the slope of the articular eminence.
What position is independent of tooth contact?
CR
What is maximal intercuspal position?
– Position with complete intercuspation of opposing teeth.
What position is independent of condylar position?
maximal intercuspal position
What is a model?
reproduction for demonstration, accuracy not implied
What is a cast?
An accurate positive reproduction of the maxillary or mandibular arch
What is a diagnostic cast?
Cast for the purpose of diagnosis & treatment planning
What is a master cast?
Replica of teeth, residual ridges, & other parts of the dental arch used to fabricate dental restoration or prosthesis
What is a tooth-supported RPD?
RPD that depends entirely on natural teeth for support
What is a tooth-tissue supported RPD?
– RPD supported and retained by teeth at only one end.
– Denture base is supported by teeth & the residual ridge
When should you make an RPD?
- Edentulous area(s) too long or numerous for a fixed prosthesis
- Need to restore lost soft and hard alveolar tissue, especially in the anterior region
- Reduced periodontal support of remaining teeth
- Need to distribute masticatory stresses across the dental arch: cross-arch stabilization
- No posterior abutment tooth
- Attitude & desires of patient (economic considerations)
- Immediate replacement of teeth
What are the disadvantages of RPDs?
- Removable, not considered ‘part’ of patient
- May be lost or broken
- Clasps may be visible, less esthetic
- May dislodge during function
- May trap food while eating
What is the height of contour on a tooth?
Line encircling a tooth that designates its greatest diameter at a selected position
What is a suprabulge area?
Portion of tooth above the height of contour
What is an infrabulge area?
– Portion of tooth below the height of contour
– May also be referred to as Undercut
What is a kennedy class I?
Bilateral edentulous areas located posterior to the remaining natural teeth
What class?
Class I
What is a kennedy class II?
A unilateral edentulous area located posterior to the remaining natural teeth
What is a kennedy class III?
A unilateral edentulous area with natural teeth remaining both anterior and posterior to it
What is a kennedy class IV?
A single, but bilateral (crossing the midline) edentulous area located anterior to the remaining natural teeth
What class?
Class II
What class?
Class III
What class?
Class IV
What is a modification space?
Edentulous areas other that those determining the classification.
What are applegates rules?
Eight rules governing the application of the Kennedy Classification system
Classification should follow rather than precede any ____________ of teeth that might alter the original classification
extractions
If a third molar is missing and is not
to be replaced, it _______ considered
in the classification
is not
If a third molar is present and is to be used as an abutment, it _____ considered in the classification
is
What do you usually do in an RPD if the first molar is present but the 2nd and 3rd aren’t
Generally, if the first molar is present and the second and third molars are missing, the second and third molars are not replaced
The most _________ edentulous area
(or areas) always determines the
classification
posterior
Edentulous areas other than those determining the classification are referred to as _____________ and are designated by their number
modifications
The extent of the modification is
not considered, only the __________
of additional edentulous areas is
considered
number
There can be no modification areas in Class _____ arches
IV
- Other edentulous areas lying posterior to the single bilateral area crossing the midline would instead determine the classification
What class?
Class I Mod 2
What class?
Class II Mod 1
What class?
Class II Mod 1
What class?
Class II Mod 2
What class?
Class III Mod 1
What class?
Class III Mod 1
What class?
Class III Mod 1
What is the craddock classification?
This classification is based upon the
denture type (not used often)
Type 1: Mucosa borne
Type 2: Tooth-borne
Type 3: Mucosa and tooth-borne
What class?
Class III Mod 1
What class?
Class I Mod 1
What class?
Class III
What class?
Class I
What class?
Class II Mod 2
What class?
Class II Mod 2