chapter 52: removable prostethics Flashcards
type of denture that replaces one or more teeth in the same arch
partial denture
also referred to as a denture, that replaces all the teeth in one arch
full denture
removable prosthesis can replace their natural dentition. TRUE OR FALSE
FALSE
extraoral factors when considering getting prosthesis
physical and mental health
motivation,
age,
occupation,
dietary habits,
social and economic factors.
Individuals with poor ________ health may become agitated or concerned about having a denture in their mouth.
mental
The dentist should explore all acceptable alternative treatment options before giving serious consideration to the request.
TRUE OR FALSE
TRUE
Occasionally, patients’ major motive for having their teeth extracted and replaced with a prosthesis is for ______
esthetics
A prosthesis for a young person must be designed to allow for ____ and accommodate for new teeth as they erupt.
growth
Dietary Habits
______ oral tissue is an important aspect of removable prosthodontic success.
healthy
Patients’ ____ about their oral health and appearance will help them decide whether dentures are important.
attitude
The ability to pay for the treatment is a major _____ factor
economic
whicih muscles contribute to retention and dunctional control of the prosthesis
facial muscle
The presence of something foreign, such as a prosthesis, in the oral cavity can stimulate an _____ flow of saliva.
excessive
if your patient has experienced a stroke or another type of neurologic disorder and there is paralysis, the prosthesis may make saliva control more ____
a)difficult.
b) easier
A. difficult
what may be the cause of inadequate salivary flow
Physical conditions, medications, or radiation treatment
Successful wearing of a removable prosthesis depends on the support provided by the _____ ______
alveolar ridge
If the ______ ______ is at normal height and is evenly contoured, the alveolar ridge should provide good support, allowing for an even distribution for the stress of
mastication.
alveolar ridge
Resorption occurs when the alveolar ridge has resorbed because of loss of ____ causing an uneven distribution of pressure on the prosthesis, which keeps it from fitting properly.
teeth
Surgery that is sometimes perfomed to recontour the alveolar ridge
alveoplasty
what happens as a normal process to the alveolar ridge after teeth are lost
decrease in size
a poorly fitting prosthesis may cause irritation and sore spots, known as
____ ______ , on the oral mucosa.
pressure points
a benign overgrowth of bone in a specific area
tori
Depending on the type of prosthesis, it may be necessary to have the tori surgically removed before fabrication of the appliance is begun.
TRUE OR FALSE
true
denture that replaces the missing teeth in a quadrant or arch.
removable partial denture
where does the removable partial denture receive its support
underlying tissues & remaining teeth
(that serve as abutments.)
This type of prosthesis is designed to distribute the forces of mastication between the abutments and the supporting tissues.
removable partial dentures
Contraindications to a Removable Partial Denture
- A lack of suitable teeth in the arch
-Rampant caries or severe periodontal conditions
-Lack of patient acceptance for esthetic reasons
-poor oral hygiene
The basic components of a removable partial denture are :
framework
connectors
denture base
retainers
rests
artificial teeth
the cast metal skeleton that provides support for the remaining components of the prosthesis.
framework
joins the various parts of the partial denture.
connector
maxillary partial denture will have a ____ connector, and the mandibular partial denture will have a ___ connector.
palatal
lingual
links the major connector to the base and other areas, such as rests and clasps.
minor connector
the piece of rigid metal that joins the right- and left-quadrant framework of the partial denture.
the major connector
a metal device built into a partial denture design to protect the abutment teeth from excessive occlusal weight and stress during mastication.
stress breaker
advised for abutment teeth that have limited support in the alveolar ridge.
stress breaker
also known as a clasp, is the portion of the framework that directly supports and provides stability to the partial denture by partially encircling or resting on an abutment tooth.
retainer
approaches the tooth in a straight line from the apical direction and extends upward against the tooth
The I-bar retainer, or I-bar clasp
originates at the occlusal surface of the tooth and extends downward, so that it partially encircles the tooth
. A circumferential retainer, or C-clasp,
a metal projection designed to control the seating of a prosthesis as it is positioned in the mouth.
rest
prevent the partial denture from moving in a gingival direction, which can place abnormal stress and wear on the abutment tooth.
It also prevents passage of food between the abutment tooth and the retainer.
rest
Two common types of rests are the following:
The occlusal rest
(on the occlusal surface of the tooth. This placement minimizes trauma to the tooth )
The lingual rest
(placed on the cingulum of the lingual surface of the tooth, where support is good, but away from visibility.)
what are artificial teeth constructed from
acrylic resin or porcelain
Placement of acrylic teeth with ____ or _____ teeth in the opposing arch often is a good compromise.
natural or porcelain
____ teeth are more susceptible to fracture and tend to cause abrasion of the opposing natural teeth.
Porcelain
______ teeth are lighter in weight, can be modified, and produce less noise, although there is a clicking sound during chewing
acrylin resin teeth
______ teeth tend to wear faster and are more susceptible to staining.
acrylic
Appointment Sequencing for a PARTIAL DENTURE
5 appointments:
- records (dental history)
2.preparation ( shade and mold) - try in
- delivery
- post delivery
A __ ___ minute appointment is usually adequate for delivery of the partial dentur
20-30
Any changes in partial denture design are noted WHERE ?
laboratory prescription
are designed to restore the function and esthetics of the natural dentition when all the natural teeth are missing.
Full dentures
complete denture receives all its support and retention from :
underlying tissues,
alveolar ridges,
hard and soft palate,
surrounding oral mucosa.
Major Indications for a Full Denture Include the Following:
- fully edentulous patient
-remaining teeth cant be saved
-patient refuses alternative treatment
Contraindications to a Full Denture Include the Following:
- alternative treatment
-physical or mental illness that affects patients ability to cooperate
-hypersensitive to denture materials
- patient not interested in replacing missing teeth
Components of a Full Denture
base,
flange,
post dam,
artificial teeth
the part of the base that extends over the attached mucosa from the cervical margin of the teeth to the border of the denture.
flange
designed to fit over the residual alveolar ridge and surrounding gingival area.
base
The base is commonly made from ________ . To provide additional strength, however, it may be reinforced with a metal mesh embedded in the acrylic.
denture acrylic
Retention of a maxillary denture depends on the suction seal known as the
post dam
aka
posterior palatal seal
not included in dentures because space is needed in the posterior region to allow the patient to close, chew, swallow, and speak normally
third molars
A full denture will have __ teeth per arch;
14
Appointment Sequencing for a Full Denture
6 appontments
1.records
2.final impression
3. try in of baseplate and occlusal rim
4. try in
5. delivery
6.post delivery
constructed on the master casts, is made of a semirigid material such as shellac and self-curing or heat-cured resins.
base plate
a prosthesis that is placed immediately after the extraction of a patient’s remaining teeth.
immediate denture
placement of a _____ immediate denture is more common because it restores function and spares the patient the embarrassment of being without teeth.
maxillary
resembles a clear plastic impression tray that duplicates the tissue surface of the immediate denture.
Surgical Template
a full denture that is supported by the bony ridge, oral mucosa, and two or more remaining natural teeth or implants.
overdenture
To permit the denture to fit snugly over the teeth without excessive bulk, the natural teeth are prepared by removing much of their bulk. The remaining tooth structure is protected with a
____
coping
In the ___________ technique, only a minimal amount of tooth structure is removed, and the length of tooth remains almost the same
long coping
In the ____________ technique, which is used only with endodontically treated teeth, tooth structure is greatly reduced and shortened.
short coping
A patient should be scheduled ____ to evaluate the fit and to examine the oral tissues for subclinical irritation and dysplasia.
yearly
_________ is used for diagnosing problems with partials and dentures at insertion and adjustment appointments.
Pressure-indicator paste
placing a new layer of denture resin over the tissue surface of the appliance.
relining
replaces the entire denture base material on an existing prosthesis without changing the occlusal relationship of the teeth.
rebasing
reline _____ the prosthesis
and a rebase _____the denture base.
resurfaces
replaces
One method used to rehabilitate unhealthy supporting tissues is to place a ____________ material for a short period, usually 3 or 4 days.
tissue conditioning
what is in the tissue conditioner material
soft elastomer composed of powder and liquid
