ERIN TEMP RELINES Flashcards
what are the indications for an INTERIM?
-young patients, post traumatic tooth loss, caries, etc.
-Health: Older adult patients with compromised medical conditions.
TIME-ASAP
what are the uses of interim?
- maintain a space
- reestablish occlusion
- replace those missing teeth
- service during PERIO OR IMPLANT therapy
- condition patient to definitive PRDP
describe the design principles for interim?
retnetion is with wrought/orhto wire, ball clasps
- interprox acrylic struts
- surface tension
- adhesives
- NOT ALL CASES need clasps-sometimes acrylic retention is fine
describe the hard tissue support f r interim?
- ball clasps (inter proximal, marginal ridge support)-
- wrought/ortho wire rests
- Cingulum, occlusal rests in acrylic
describe the soft tissue support for interim?
these are the same as full dentures in distal extension patients
- pterygomax notch extension
- retromolar pad, tuberosity coverage
are the cingulum and occlusal rests of interim in metal or acrylic?
they’re in ACRYLIC!
how often should you check the interim appliances?
every 3-6 months
what is necessary to compensate for the tissue changes as a result of post surgical healing?
soft tissue conditioners or hard chaired reline materials
what are the indications for transitional RPDs?
to aid a patient in making the TRANSITION to complete dentures.
- to avoid immediate extractions when some or all of the teeth are hopeless but patient not ready for CD
- NO ABSOLUTE time restrictor on the use of these.
- THESE can be worn longer than INTERIM
what are TREATMENT PRDPS?
these are used as a vehicle for TISSUE CONDITIONING
-also could be used as a treating splint to establish NEW VDO or occlusal relationship (TMD therapy)
an occlusal guar d to control undesireable oral habits
what’s the best method for PRDP repairs?
PICK UP ALGINATE impression and pour cast WITH THE PRDP in the impression
-The PRDP is removed from cast to make the repairs.
can there be an all resin partial?
no, you have to have wire rests somewhere?
what does intracoronal mean?
a retainer WITHIN THE CROWN.
describe intracoronal retainer?
-precision attachments and semi precision attachments.
usually made with male and female, with PARALLEL walls within contours of a restoration, creating frictional resistance against the displacement of the PRDP. Can have a crown with cast keyway attachment.
describe extracoronal?
this means OUTSIDE OF THE CONTOURS of the abutment
- you have attachments
- retentive clasp arms
- you create MECHANICAL resistance to displacement through the external surface of an abutment tooth
what are the advantages of using extracoronal?
they are pretty!
and mechanical means that functional loads are MORE APICALLY directed!
-improved cross arch load transfer and prosthesis
what are the disadvantages of using extracoronal?
complexity of the design, fabrication, and clinical treatment
- demanding crown prep because you need space for the attachment.
- vertical HEIGHT NEEDED! 4-6 MM
- lab technique and path of insertion- harder for elderly
- cost, and wear components + maintence
how much vertical height do you need for extracoronal?
you need 4-6 mm
what are contrindicatiosn for extracoronal?
- poor perio health
- poor crown: root ratio
- compromised endo and restorative conditions
- compromised manual dexterity
- inadequate oral hygiene
what are some factors when making this big decision!?
- cost
- simplicity
- vertical height requirement
- easy to use
- -easy to adjust?
- availabilty- what i the patients move?
- ERA, SA swiss anchor, CEKA, allegro seem to be reasonable
