com rem final Flashcards
What is a trial denture
preliminary arrangement of denture teeth that has been prepared for placement into the pt mouth
during the trial denture app _____ are crude approx of positions of teeth- ____ are arbitrary
wax rims and contours
During teh trial placement is it important to determine the
OVD
physiologic rest position is ____ mm space between teeth
2-4
Stretch relax method is when you
put a dot on nose and chin and measure the distance between dots
Swallow relax method should have th pt swallow and the teeth should _____ while swallowing
contact
There should be ____ when pt says S and Ch
no contact of teeth
When determining the CR occlusion must verify the cast are….
mounted corretctly on articulator
What do you do if you have to remount the cast
make a new interocclusal record by remounting madnibular cast
To determine the anterior occlusal plane what should you do
determined by esthetics and is when the max incisors contact lower lip with F and V sounds
To determine the posterior occlusal plane…
mandibular molars are 2/3 up RM pads
What sounds can you use to dermine the OVD
S Ch Z T Sh
if teeth touch when speaking S sounds, OVD is ____-
too far open
if pt whistles on sibilant sounds
contour of anterior palate is too narrow
whens speaking F or V the incisors should
hit the wet/dry lip line on lip and have pt count from 50-60
incisal plane paralleles the ______
interpupillary line
What is the importance of protrusive record
records condylar inclinations
adjust condylar angles
used for balance occlusion
When you are mounting the teeth should _____ perfectly and there should be no space around cusps
interdigitate
PMMA- acrylic resin is a
coloreless, transparent solid
what are the advantages of acrylic
ease in processing
excellent esthetics
adequate strength
low water sorption
When do you use heat activated denture base
used in fabrication of all dentures
_____ is a technique to process denture resins with heat activation
compression molidng
Internal porosity is caused by
temp rise above 100 celcius and is monomor boils
_______ have the same compositions as the denture base resin except for pigmentation to produce tooth shades
resin denture teeth
In resin denture teeth the teeth and base are
chemically bonded to each other
what is the difference between autopolymerization and heat activated resins
autopolymerization uses benzyl peroxide
heat activation has a greater degree of _____
polymerization
Chemically activated or autopolymerization has
less shrinkage and shorter working time
What is the purpose a tissue conditioner
lining the intaglio surface of the denture with conditioners improves retention and stability
tissue conditioners allow the pt to keep wearing dentures when the _____
tissues continue to heal
What are the uses for tissue conditioner
prevent denture soreness
stabilize temp record base
stabilzie immediate denture healing
final impression material
When is metal base dentures used
for repeated fracture of a conventional dentures
what is a disadvantage of metal denture
hard to reline
what is the purpose to reline a denture
to produce an intaglio surface which fits the mucosa accurately without affecting OVD
What are reasons you would reline
tissue changes caused by stress, hereditary factors, defects in dentures
relining is the replacing of the intaglio surface with
new resin
rebasing is replacing the ______ with new resin
entire denture base
what errors do you want to avoid with relining
dont increase OVD
dont let max denture move forward during relin impression step
Diff between function impression and static impressions with relining
functional- leave in 1-2 hrs
static- closed mouth technique and removed moments later not hrs
when do you place the posterior palatal seal when reling
before processing
most common situation in a single denture
max arch is edentuoulous and mand has natural teeth
_____ routine resorption following extraction of teeth results in smaller maxilla
centripetal resorption
_____ is when the max CD oppsoing mandibular naterior natural teeth
combination syndrome
effects of combination syndrome
max anterior tissue is mobile
inflammatory palatal hyperplasia
maxillary tuberosities enlarged
mandibular resorption
mand anterior teeth supraerupted
______ will help prevent rapid bone loss
overdentures
manibular anterior resorbs ____ as fast as max anterior
4x
what are the advantages of overdentures
dentures support
stability
improved stress distribution
psychological benefit
When to use overdenture
combination syndrome
conventional denture would have a poor prognosis
What is the most frequent tooth used for an abutment
canine
the maxilla resorbs ___ and
up and inward
biting force of natural dentition is ____ that of a denture
5x
What are the sources of occlusal error
-inaccurate max-man records
-ill fitting temporary record bases
-change of OVD on articular
-incorrect arrangement of post teeth
-failure to close flask during processing
-too much pressure in closing the flask
-resin shrinkage upon polymerization
-heat generated when polishing
What is the goal of the insertion appointment
the process of eliminating errors
patients should leave out old dentures for at least ____ prior to insertion appointment
24 hrs
what cast do you remount for clinical remount
mandibular
what is PIP used for
used on itaglio surface to detect undercuts/ accuracy of tissue contact
After applying PIP and placing it in mouth, what do you remove
islands of pink
what is disclosing wax used for
check for overextension of denture borders
what can cause problems with phonetics
thickness of max palate
re-evalulate position of max ant teeth
open OVD
What can cause gagging
palate is too thick
palate extension too long
lack of tongue space
Dentist should ______ exist and work to find it
assume errors
when do you do a clinical remount
prior to making the reocrd
Process of clinical remount
place 2 cotton rolls between post teeth to deprogram muscles
make interocclusal records
remount dentures on articulator and refine occlusion
What are the advantages of clinical remont
reduces pt participation
dentist sees better
stable working foundation
absence of saliva
Lab remount=
still on master cast, straight out of processing
clinical remount=
on articulator
what is the desired occlusion
simultaneous contact of all posterior teeth
NO contacts on _____ teeth
anterior
ALl pt with dentures should be seen ____ after insertion of denture
24-48 hrs
patients who are seen in 24-48 hrs do _____-
better with dentures
adjust the ____ surface first, then adjust _____
intaglio then the occlusion and outside
most crucial time in a patients perception of success of dentures is the ______
adjustment period
When is the time to remedy esthetic problems
trial placement period
what can cause tissue irritations
overextension
trauma from occlusion
pressure from base
tissue abrasion
possible causes of loss of retention are
occlusion
base contours
teeth not in neutral zone
posterior palate seal
over/under extended
salivary flow
soreness in vestibule caused by
overextended border of flange
sore on crest of ridge caused by
occlusion error
soreness at frenum caused by
frenal notch too shallow or sharp
soreness of tissue overlying coronoid process caused by
too much thickness at distobuccal corner
numbess or burning in anterior palate caused by
pressure on incisive papilla
numbness or burning in lower premolar area caused by
pressure over mental nerve
teeth contact during speaking then the
OVD too far open
If the dentures loosen after 3-4 hrs after the first insertion then there is
an occlusal error
max CD dislodges when yawing then
DB corner too thcik
smiling causes max CD to dislodge then
denture flange too thick posterior to buccal frenum
max CD dislodges when eating then
suspect post palatal seal or occlusion
Conventional denture is to
reline the immediate denture after healing and ridge stable (6months)
fabricated prior to extracting teeth
what are the 2 phases of conventional immediate denture
phase 2- remove post teeth, alveoplasty, tuberosity reduction
phase 2- extract ant teeth
Interim immediate dentures is ued for
short period then is replaced by a new set after healing
In immediate dentures a ____ is not possible
anterior try in so ethetics may be unpredictable
denture should be worn _____ without being removed by the patient
24 hours
what are the benefits of a 2 phase surgery
simplifies clinical procedures
reduces post placement care
improves denture comfort
complete denture therapy is not a
definitive treatment
ridge resorbs ___ on mand than max
4x
Description of traumatic ulcers
common with new dentures
can be caused my occlusal issues or overexteneded
Description of inflammatory papillary hyerplasia
combination syndrome
related to wearing ill fitting denture
candida present
angular cheilitits description
is inflamattion of lips with redness radiating from angles of mouth
assosciated with candida
decreased OVD and vitamine def
descrption of fibrous hyperplasia aka epulis fissuratum
little lip f tissue caused by ill fitting dentures. NOT APART of combination syndrome
found on labila vestibule not on lingual
description of canida
most common on max arch
HIV and diabetes are presisposing conditions
3 presentations with HIV are
angular cheilitis
erythematous candidiasis
pseudomembranous canidia
What is the occlusion desired
simultaneous contact of all posterior teeth in CR
No anterior contact
No inferferenecs in eccentric movements
a disadvantage to immediate dentures is that there is a lack of
a trial dentures so cant determine the anterior esthetics
