Tissue Management, Impression Making, Definitive Casts and Dies (Pt. I) Flashcards
Introduction
oImpression must include: n Sufficient \_\_\_\_ tooth structure immediately adjacent to the margins pTo identify contour of tooth and prepared surfaces n All teeth in \_\_\_\_ pAllows casts to be accurately \_\_\_\_ pLingual surfaces anterior teeth nInfluence \_\_\_\_ n Soft tissues immediately surrounding tooth preparation
unprepared
arch
anterior guidance
Include unprepared tooth structure to develop ____
contours
Avoid:
(1) ____
(2) Tears
(3) ____
(4) Other imperfections
For optical impressions, avoid: ____
> >
Inaccuracies in ____
air bubbles
thin spots
artifacts
restoration fabrication
Introduction
oMoisture control n One of the most important aspects of \_\_\_\_ making n Control \_\_\_\_ n Control \_\_\_\_ n Moisture may result in \_\_\_\_
successful impression
saliva
bleeding
VOIDS
(1)Tissue Health
oMust evaluate health of surrounding soft tissues
o____ must be treated and resolved before fixed prostheses placed
oAttempt to minimize ____ damage during preparation
n Especially with ____ preparations, may be unavoidable
oWell-____ provisional restoration imperative to restoring gingival health
Soft tissues must be returned to optimum state of health prior to impression making
periodontal disease
soft tissue
subgingival
contoured
(1)Tissue Health
Poor contours contribute to ____ and ____ of gingival tissues
Must reduce ____ prior to impression
inflammation
recession
inflammation
(1)Tissue Health
oOften better to ____ impression making and improve oral health
n Quality ____restorations
n Reinforce homecare
oMinor gingival hemorrhage
n ____
n Infiltrating a ____ directly into gingival papilla
delay
provisional
astringent
local anesthetic
(2)Saliva Control
oSeveral techniques for dry field n \_\_\_\_ n \_\_\_\_ n \_\_\_\_ angles n Different \_\_\_\_ available pAntisialagogic action pPrescribe cautiously
cotton rolls
saliva ejectors
dry
medications
(3)Displacement of Gingival
Tissues
oOften needed to gain access to prepared tooth oCan be achieved by
n Mechanical
p____ (most effective)
p____ with direct pressure
n Chemical
p____ or epinephrine cause
localized soft tissue shrinkage
n Surgical
p____, excision with scalpel or electrosurgery or laser
gingival retraction cord
foam or paste
aluminum sulfate
curettage
(3)Displacement of Gingival
Tissues
oDisplacement cord
n Non-____ cord
n Chemically impregnated cord or dipping cord in astringent
pContain ____ or iron salts
and cause transient ischemia
n____ the gingival tissue pEpinephrine-containing cord
nUse with caution due to ____
oSulcus closes within ____ seconds, once removed
n Make impression ____
impregnated AI shrinking tachycardia 30 immediately
(3)Displacement of Gingival
Tissues
o\_\_\_\_ (hemodent)and \_\_\_\_ (astringident) n Medicaments which help control seepage of \_\_\_\_ p\_\_\_\_ hemostatic gel p\_\_\_\_ tissue damage
aluminum chloride ferric sulafte gingival fluid coagulative minimum
(3)Displacement of Gingival
Tissues
oContact between the astringent and prepared tooth surfaces must be minimized to maintain ____
n Subsequent dentinal tubule sealing may be desirable to decrease ____
smear layer
post op sensitivity
(3)Displacement of Gingival
Tissues
oTechniques n Single cord technique n Double cord technique pThin cord placed without \_\_\_\_ at bottom of gingival crevice n Left during \_\_\_\_ n Minimize \_\_\_\_
pSecond ____ cord placed on top for lateral tissue displacement
n Removed prior to ____
overlap
impression
seepage
larger
impression-making
(3)Displacement of Gingival
Tissues
oIsolate prepared teeth
n ____
n ____
oGently dry
n Do not excessively ____
pPostoperative sensitivity
oCut length of cord sufficient
to ____ tooth
oDip cord in astringent and squeeze excess with gauze
n If place dry cord, moisten before ____ to prevent tearing epithelium
cotton rolls saliva ejector dessicate encircle removal
(3)Displacement of Gingival Tissues
oLoop the cord around the tooth oGently push cord into sulcus n Start \_\_\_\_ peasier n Angle instrument toward \_\_\_\_ to push directly into sulcus n Second instrument may aid placement
interproximally
tooth