CHPT 30 and 32 Flashcards
veneers
are thin layers of tooth -colored material that cover much of the facial surface.
tooth colored cast restorations
made either of porcelain or composite resin
three quarter crown
normally is prepared so that the mesial distal and lingual surfaces are reduced but the facial surface is left intact
the fixed prostheses stage
usually begins 6 months after surgery.
role of laboratory technician
The dental laboratory technician and the dentist work closely together to give the patient quality restorations.
prostheses
when finished ,the protheses are cemented permanantly in the patients mouth
post-retained cores
the posts are made of materials such as titanium, titanium alloy, gold-plated metal, and stainless steel.
pontic
a bridge may replace one more adjacent teeth in the same arch. the missing tooth is replaced this
onlays
are like inlays except they include the cusp ridges of the tooth
maryland bridge
OR resin retained fixed bridge, is used to replace one tooth. abutment teeth have very little tooth structure removed during preparation.The bridge consist of a pontic with exstintions(retainers) varing in shapes. The extensions are designed to attach to the abutment teeth, on or toward the lingual surface.
machanical retraction
the cotton cord is left in place for 10 to 15 minutes.
low- speed handpeace
burs discs and stones
inlays
cover the area between the cuspsin the middle of the tooth and the proximal surfaces that are involved inlays are MO,MO,DO, oe O
high-speed handpeice
with a selection of diamond, discs, and burs
fixed prosthese maintenance
maitainance of the fixed prosthes should become part of the patient’s daily regimen. brushing and flossing are continued.
cementation of porcelain -fused - to metal crown
the occlusion margins and contacts are evaluated and adjustments are mad, if necessary. if the porcelain is adjusted, it is sent back to the laboratory to be refinished.
cementation appointment
acid etchant is used to clean and decontaminate the inside surface of the veneer.
CAD/CAM restorative systems
there are no unpleasant impressions, no needfor tempararies, and less reduction of healthy tooth structure.
bridges
the bridge is divided into units, and each unit of a bridge represents a tooth
before you cement the crown make sure you have
made adjustments
adjacent
the teeth adjacent to the pontic are called these
removable prosthodontics
the prostheses can be removed from the mouth by patent for cleaning.examination ,and repair.
two types of prostheses
partial denture and complete full denture
a partial denture
replaces one or more teeth in the same arch and is supported by the underlying tissue and remaining teeth.
the complete denture
replaces all the teeth in one arch. a full denture is retained and supported by the underlying tissue of the gingiva and oral mucosa, the alveolar ridges,and the hard palate.
for successful removable prosthodontics
the patent should be in good health, have a positive attitude and be cooperative
components of a removable partial denture
metal framework,rest,connectors,retainer,denture base
metal framework.
he metal framework is the skeleton of the removable partial to witch the remaining units are attached
rests
the part that contacts a tooth to provide a vertical and horizontal support
connectors
on the mandibular, the major connector is often a lingual bar or plate. on the maxillary the major connector is a palatal bar or strap or a complete palatal plate.
retainer
called a clasp; the retainer contacts the abutment teeth and prevents the partial from moving.
necessities for successful denture treatment
the patent should have healthy aveolar ridges
jaw relationship appointment
once the completed baseplates and bite rims are articulated by the laboratory, they are sent back to the dental office to be used to determine the patients jaw relationship. The dentist and the laboratory technician need a detailed and accurate model of the patients occlusion, along with the other measurements.
a caliper- like device called a facebow
used to record the relationship of the maxillary dentition to the tempormandibular joints so that the maxillary cast can be mounted on the articulator in the correct anatomic position.
denture construction between appointments
between the consultation and the final impressions appointment, the alginate impressions are poured in plaster or stone.on these models ,custom acrylic trays are constructed.
in the case of an immediate denture
the custom trays are fabricated to allow space for the anterior teeth present in the mouth and posterior edentulous areas
the denture is returned to the laboratory
for final processing
the occlusion is adjusted with
burs, stones, and disc on the cusps of the teeth.
pressure spots
are relieved on the tissue surface of the denture base.
pressure indicator past
placed on the internal surface of the denture and then inserted into the patients mouth
pressure areas are marked and the
the dentist then uses acrylic burs and stones for adjustments
home car instructions
keep denture moist to prevent dimensional change
Dentures have low
thermal conductivity, so the patient will notice a decrease in thermal changes to the tissues under the acrylic denture base.
the chairside (soft) reline
saves the patient time and makes it possible for the patient to never be without the denture
this reline process
is a temporary solution, because the soft reline is not as durable and will not last as long as the laboratory reline.
tissue conditioning
the process of healing tissues damaged from ill fitting dentures this must be done before a denture reline is completed.
a temporary soft lining material
is placed in the denture to relieve the pressure and allow tissue to heal. the healing usually takes several weeks and then the denture can be relined.
denture relining step three
the material is mixed according to manufactures directions and then placed in the clean denture. covering the entire tissue surface. the materials have low thermal reaction and cure directly in the patients mouth.
denture relining step six
insert the denture into patients mouth and ask the patient to bite until the material reaches the initial set stage. explain to patent that may have slight burning sensation.
