Miscellaneous Flashcards by sophie rosen

PRE-PROSTHETIC SURGERY
surgical removal of the following should be evaluated before the fabrication of the new RPD: (4)

max and maand tori
extoses
sharp prominent mylohyoid ridges
epulis fissuratum

How well did you know this?

Not at all

Perfectly

DENTURE STOMATITIS

localized or generalized chronic inflam of the denture bearing mucosa

How well did you know this?

Not at all

Perfectly

DENTURE STOMATITIS
clinically

there is redness and a burning sensation w or w/o discomfort

How well did you know this?

Not at all

Perfectly

DENTURE STOMATITIS
most likely causes

trauma
secondary fungal inf

How well did you know this?

Not at all

Perfectly

DENTURE STOMATITIS
tx (5)

improved oral hygiene
tissue rest
antigunfal therapy (nystatin)
resilient tissue conditioners
new, well fitting dentrues

How well did you know this?

Not at all

Perfectly

ACUTE ATROPHIC CANDIDIASIS
presents as (2)

red patch of atrophic
erythmeatous red and painful mucosa

How well did you know this?

Not at all

Perfectly

ACUTE ATROPHIC CANDIDIASIS
antibiotic sore mouth, COMMON FORM of atrophic candidiasis should be suspected on a pt that develops symptoms of
(3)

oral burning
bad taste
sore throat during or after therapy w broad spectum antibiotics

How well did you know this?

Not at all

Perfectly

ACUTE ATROPHIC CANDIDIASIS
pts with — may also develop

chronic iron def anemia`

How well did you know this?

Not at all

Perfectly

ACUTE ATROPHIC CANDIDIASIS includes

denture stomatitis

How well did you know this?

Not at all

Perfectly

PAPILLARY HYPERPLASIA
found in

palatal vault

How well did you know this?

Not at all

Perfectly

PAPILLARY HYPERPLASIA
causes (4)

local irritation
poor fitting dentures
poor oral hygiene
leaving dentures in 24 hr/day

How well did you know this?

Not at all

Perfectly

PAPILLARY HYPERPLASIA
tx (5)

educate pt in oral hygeine
advise pt to leave denture out at nigh
soak dentures for 30 min /day 1% sodium hypocholorite and rinse
use tissue conditioner
brush irritated area lightly w soft brush

How well did you know this?

Not at all

Perfectly

EPULIS FISSURATUM

chronically ill fitting denture may cause inflam fibrous hyperplasia adjacent to its border. it is a reactive growth in relation to an overextended or ill fitting denture flange. these cleft like lesions are known as EPULIS FISSURATUM

How well did you know this?

Not at all

Perfectly

EPULIS FISSURATUM
causes (2)

long term neglect or settling subsequent to residual ridge resorption
traumatic occlusion of natural teeth opposing an artificial denture

How well did you know this?

Not at all

Perfectly

EPULIS FISSURATUM
tx

surgical removal of the hyperplastic tissue

How well did you know this?

Not at all

Perfectly

HYPERPLASTIC TISSUE

surgically removed before construction of RPD

How well did you know this?

Not at all

Perfectly

HYPERPLASTIC TISSUE
tx (4)

tissue rest
soft reline of existing dentures
change in denture habits
surgical removal of tissue

How well did you know this?

Not at all

Perfectly

HYPERPLASTIC TISSUE
the best impression tech for patient w loose HYPERPLASTIC TISSUE is to

there must be intimate contact of the impression material w the tissue in its passive position

How well did you know this?

Not at all

Perfectly

HYPERPLASTIC TISSUE
the most important reason for tx before construction of a complete or RPD is to provide a

firm, stable base for the denture

How well did you know this?

Not at all

Perfectly

KELLY’S COMBINATION SYNDROME

specific pattern of bone resorption in the anterior portion of edentulous max

generally observed when a mand partial denture is opposed by a max complete denture

How well did you know this?

Not at all

Perfectly

KELLY’S COMBINATION SYNDROME
in most instances, the prosthesis lose some degree of — as a result of alveollar resorption

support

How well did you know this?

Not at all

Perfectly

KELLY’S COMBINATION SYNDROME
as this resorption occurs beneath the mand extension bassed,

support for the psoterior prosthetic teeth is diminished

How well did you know this?

Not at all

Perfectly

KELLY’S COMBINATION SYNDROME
occlusal forces are concentrated within the anterior sextants. increased forces in anterior max may result in resorption w accompanying

DOWNWARD GROWTH OF THE TUBEROSITIES AND TIPPING OF
THE OCCLUSAL PLANE

How well did you know this?

Not at all

Perfectly

KELLY’S COMBINATION SYNDROME
* CONTINUOUS RELINE OR PLACEMENT OF IMPLANTS in mand posterior locaitons may combat the effects of combo syndrome by

stabilzing the mand post occlusal surfaces

this results in more stable occlusal plane and a more equitable distribution of forces to the more equitable distribution of forces to the opposing max denture . equitable dist of forces is maintained and the likelihood of conbo syndrome is minimized

How well did you know this?

Not at all

Perfectly

TISSUE CONDITIONER

soft materials applied to the intaglio to allow a more equitable distribution of forces throughout the dental arch

TISSUE CONDITIONER they are

non irritating non toxic

TISSUE CONDITIONER used to tx

unhealthy or abused oral tissues

TISSUE CONDITIONER soft and elastic, does not undergo

substantial perm deformation

TISSUE CONDITIONER softness lasts approx --- after which the material hardens and ccan itself become an irritant

1 week

TISSUE CONDITIONER to be effective in tx abused oral tissues CONDITIONER MUST BE CHANGED every

3-5 days

TISSUE CONDITIONER composed of powder and liquid

powder is an acrylic polymer, usually ethyl metacrylate and the liquid is usually a mix of ethyl alc and aromatic ester

TISSUE CONDITIONER these two combine to form a gel that remians pliable for several days this mechanism of action is a

combo of improved force distributed and a short term cushioning effect

TISSUE CONDITIONER intaglio is checked with

pip

TISSUE CONDITIONER occulsion is checked and refined following

normal procedures

TISSUE CONDITIONER then

tissue conditioner is applied

TISSUE CONDITIONER cameo surface of the prothesis is

painted with separator

TISSUE CONDITIONER after the tissue conditioner is mixed according to mand recs, it is

flowed into the intaglio or the denture

TISSUE CONDITIONER tissue conditioner is distributed evenly using a

small spatula

TISSUE CONDITIONER

tx denture is seated in the mouth under light pressure the pressure is maintained as the material dlows border tissues should be manpulated to border mold the conditioner for mand RPD, the tongue should be brought forward and forcibly placed into eat cheek to define the lingual esxtension accurately

TISSUE CONDITIONER if the posterior artificial teeth are present, the pt must

close the teeth tg while the conditioner is still capable of flowing in order to align the art teeth properly w the opposing occlusion

TISSUE CONDITIONER once the denture has been seated and aligned, the pt should sit quiletly for --- until the gel stage of the cond has been reached

4-5 min

TISSUE CONDITIONER at this time the denture should be

removed from the mouth and examined

TISSUE CONDITIONER excess material removed usuing a

sharp blade

TISSUE CONDITIONER areas of contact are removed using

lab burs

TISSUE CONDITIONER tissue conditioner should not be allowed to dry. for those periods of time when the denture is not in the mouth, must be

submerged in water or cleansing solution

WROUGHT WIRE (2)

febricated by drawing the metal from which it is made into a wire it is important that a wrought wire slasps have an elongation % of no more than 6%. microstructure changed that could compromise the physical prep such as fracture

WROUGHT WIRE a cast metal is any materal that is

melted and cast into a mold

when the casting is cold worked in some manner, provide therequired article or appliance it is called a

wrought metal

the mechanism properties of 11 are superior to those of the cast structure

WROUGHT WIRE --% greater strength, hardness and tensile strength

WW has greater (2) than the cast clasps and are tougher and more ductile than cast clasps

flexibility adjusutability

WROUGHT WIRE success depends on

physical properties and the changes that may occur during fabrication

WROUGHT WIRE lab procedures can compromise the desirable physical prop due to

IMPROPER HEATING AND COOLING

WROUGHT WIRE

too much heat recrystallization or grain growth

framework material * CHROMIUM-COBALT ALLOYS (4)

low density high modulous low material cost resistance to tarnish

CrCo are more --- in comparaison to gold or palladium. this stiffness can be overcom by including WWretentive elements in the framework

COMPOSITION OF CHROMIUM ALLOYS FOR RPDS

chromium cobalt nickel carbon, tin indium

chromium

ensures that the alloy will resist tarnish and corrosion

cobalt:

contributes strength, rigidness and hardness

nickel

increases duclitlity

minor constituents

carbon has a pronouned side effect on the strength, hardness and dictibiliy, time indium and other readily oxidized minor comonents of the alloy fx to improve bonding

gold alloys are --- as flex as the CrCo alloys

twice

CHROMIUM-COBALT ALLOYS adv (3)

high modulous for elasticity, lower flex low material cost low density

CHROMIUM-COBALT ALLOYS causes for failure (4)

cold working shrinkage porosity low % elongation excessive carbon in the alloy

cold working

reduced the % of elongation that causes a decrease in hardness

shrinkage porosity

alloys shrink approx 2.3 % and the result is porosity

low % elongation

directly related to greated brittleness

excessive carbon in the alloy

reacts with the other constituents to form carbides