Operative II-E1: Gold Onlays part 2 Flashcards
Which bur is the best for DIVERGING the walls of the isthmus and box forms?
169(L)
What is the width of a maxillary PM gingival floor?
1.2mm
What is the range of contact separation on a maxillary PM?
0.5-1mm (to burnish the margins!)
The axial wall on a gold only prep is convex and ________
convergent
Non-Fxn Bevel: ___-___ mm
0.5-0.75mm
Gingival Bevel: ____mm
1.0mm
Functional Bevel: ___-___mm (my downfall)
1.0-1.5mm
The isthmus is _____ wide and _____ deep
2.0mm wide, 2.0mm deep
Dr. H “recommends” to use the ____ bur for cutting the depth grooves
856 D
When you are checking occlusion ALWAYS check which TWO positions?
- MIP-static 2.Lateral Excursions-dynamic
IN THE HOOD: where is the hood located in relation to the pulpal floor?
APICAL to the pulpal floor
What is the finishing bevel on the hood?
LESS than 0.5mm (my nemesis today)
Why we in tha hood on the fxn cusp: it ________ the functional cusp
reinforces
Why we in tha hood on the fxn cusp: Placed below the level of the pulpal floor to prevent the ______ cusp from fracture
lingual…interesting
Why we in tha hood on the fxn cusp: improves ________ by providing a reciprocal wall on the palatal surface
retention
In the HOOD: the palatal wall is ______
convergent
I’m confused: ___mm finishing bevel along the entire cavo-surface margin
0.5mm…what was all that other bevel stuff?
When do I finish divergence of the internal walls?
AFTER the occlusal reduction (easier access and visibility, better able to determine retention)
If doing a skirt on a max molar, the ______ skirt will be larger than the ______ surface
distal larger than mesial
The pulpal and gingival floors are parallel to the ______ plane
occlusal plane
Which impression type? trip tray or full arch: less steps involved, DYNAMIC impression, reduces the “HIGH crown”!!!
triple tray
Which impression type? trip tray or full arch:
Accurate mounting is technique sensitive
full arch
Which impression type? trip tray or full arch:
Limited to stable occlusion and simple cases
trip tray
The double bite impression is ‘dynamic’ because when taken the teeth depress because of the ____
PDL
Indications for Triple Tray: Pt has a Type ___ bite
type I
Indications for Triple Tray: There is a stable, positive, and reproducible occlusion– _____
MIP
Contra Indications for Triple Tray: NO _______ partial dentures!!
REMOVABLE
Contra Indications for Triple Tray: No Type___ NOR Type ___ occlusal schemes
Type II NOR Type III
Which material does Dr. H recommend for triple tray impressions?
Polyether, its more rigid
Which is more flexible Polyether or PVS?
PVS is more flexible, PE is more rigid
How many times should you rehearse the triple tray steps with the Pt?
3 times w empty tray
What are you looking for to ensure Pt is in MIP during a Triple Tray impression?
contralateral contacts
In a triple tray impression, you want to see _____ pass through the MIP contacts
light
What type of provisional do we use when a prep has thin areas under heavy occlusion?
Metal Ion
When using integrity, how long should the pt occlude for it to set?
60 seconds
What do you bond the Bis-Acrylic Resin Temp with?
Temp Bond
When using a metal ion temp, we will use pliers to thin and smooth the ______ of the temp
margins
If the metal ion temp has good retention, use _______ cement
Cement with B & T (ZOE)
If the metal ion temp is loose, reline with ______ then cement it with ______
acrylic…temp bond
What do you use to clean excess cement? Hopefully we don’t have to use anesthetic…
an explorer, cotton and pumice
If you have an open margin when you go to deliver your crown, what do you ALWAYS check FIRST?
Contacts!
When adjusting the contacts, use a _______ ONLY
rubberized abrasive
Finalizing the marginal fit: smooth margins with a ____ bur and finish with a _____ stone. Use the ____ speed hand piece in _______
7404 bur…white stone….slow speed…reverse
To prepare the restoration, ______ the inside of it and _____ the tooth its going on
sandblast…pumcie
