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55 Cards in this Set
- Front
- Back
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The first veneers were attached to the teeth with:
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Denture adhesive powder
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In the historical progression of esthetic dentistry, major breakthrough came about with the development of.
a) Acid etch technique b) Filled resins c) Rubber dam d) A&B |
A&B
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During evaluation of a highly esthetically patient, you noted the teeth to be veneers exhibited asymmetrical gingival height you should:
a) inform the patient and proceed with tooth preparation b) correct the gingival discrepancy before proceeding with preparation c) correct the gingival discrepancy after tooth reduction correct the gingival discrepancy after cementation of restorations |
B
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Patient evaluation include all of the following except:
a) occlusal analysis b) assessment of oral hygiene c) evaluation of the lip line d) none of the above |
D
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Fluorosis usually presents as a:
a) brownish white discoloration b) grey black discoloration c) grey blue black discoloration d) none of the above |
A
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Tetracycline staining is confined to:
a) enamel b) dentin c) A&B |
B
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T/F
The gingival height is an important factor in esthetics Asymmetrical gingiva should be corrected after preparation of the teeth |
True
False (before) |
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In tooth preparation for porcelain veneers,the limiting factor is:
a) thickness of enamel b) thickness of dentin c) severity of staining d) all of the above e) none of the above |
Thickness of enamel
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During try-in of veneer restorations, glycerin is used to:
a) increase bonding b) hold the veneer in place c) clean the veneer d) activate the cement |
Hold the veneer in place
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On average, enamel is thickest in?
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The Incisal 1/3 of the tooth
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Over the last 3 decades, porcelain veneers have improved dramatically in terms of:
a) acid etching techniques b) resin adhesive cements c) porcelain material d) all of the above |
D
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In order to maximize your success in treatment planning for esthetic veneers, which of the following is the LEAST important to consider?
a) patient selection b) indications and contraindications for the procedure c) advantages and disadvantages of the procedure d) patients social standing |
D
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Which of the following conditions can be successfully managed with porcelain veneer restorations?
a) patients with severe crowding b) patients with severe occlusal traumatism and parafunctional habits c) teeth with major diastemas d) teeth with intrinsic stains |
D
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Porcelain veneers as opposed to composite veneers have
a) lower abrasion resistance b) lower stain resistance c) require longer chair time d) better esthetics and color stability |
D
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Disadvantages of porcelain veneers include
a) procedure is irreversible b) lack of reparability c) technique sensitive d) all of the above |
D
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All of the following are advantages of porcelain veneer restorations over composite veneer restorations EXCEPT:
a) superior esthetics b) higher abrasion resistance c) easy to repair d) less chair time |
C
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All of the following are DISADVANTAGES of porcelain veneer restorations EXCEPT:
a) irreversible, tooth preperation often required b) difficult to repair c) fragile until bonded d) strong fracture resistance once bonded |
D (is actually an advantage)
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Which of the following statements are true regarding tooth preparation technique versus non-tooth preparation technique when fabricating a porcelain veneer preparation:
a) better control of emergence profile with tooth preparation b) margin placement and finish lines are similar with both techniques c) non-tooth preparation technique allows for enough thickness of porcelain without overcontouring the restoration d) none of the above |
A
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When preparing a tooth to receive a porcelain veneer restoration, which of the following conditions would require the least enamel removal?
a) Severely stained teeth b) Protruding teeth c) Linguoevesed teeth d) Supraerupted teeth |
C
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What is the average enamel thickness of a maxillary incisor in th middle 1/3 of the tooth?
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0.82mm
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What is the average enamel thickness of a maxillary incisor in th gingival 1/3 of the tooth?
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0.36mm
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Having the veneer preparation end in enamel offers which of the following advantages:
a) increased bondable surface b) increased bonding strength c) better seal for restoration d) all of the above |
D
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Prior to starting a procelain veneer preparation, the patient must be informed that
a) questionable restoration must be replaced b) carious lesions must be restored c) both of the above d) none of the above |
C
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The margins of a porcelain veneer restoration should ideally be placed
a) slightly supragingival b) slightly subgingival c) at gingival margin d) none of the above |
A
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Supragingival margins are prefereable to subgingival margins because they:
a) cause less trauma to the tissue during preparation b) allow impression making without the need for retraction cord c) allow easier home maintenance and oral hygiene d) all of the above |
D
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If during tooth preparation of veneers, minimal amount of enamel remains, you should
a) continue and restore with porcelain veneers b) stop and consider other treatment modalities c) restore the tooth with composite veneers d) two of the above |
B
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T/F
Ideally, the margins of veneers should be on enamel to maximize bonding and sealing of the tooth |
Both statements and reason are True and Related
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During preparation of a tetracycline stained tooth the discoloration is expected to _____ as enamel is removed
a) increase b) decrease c) remain the same |
Increase b/c discoloration is confined to the dentin
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The location of the finish line for porcelain veneer depends on
a) the discoloration being masked b) the lip line c) location of existing class V restorations d) two of the above e) all of the above |
E All of the above YO!
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Guide grooves are recommended to ____
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Control amount of tooth reduction
Avoid dentin exposure |
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Overlapping the incisal edge may be indicated:
a) if the tooth is to be lengthened b) to facilitate seating of the veneer c) A&B d) none of the above. The incisal edge should never be overlapped |
C
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If incisal preparation is indicated, the incisal reduction should be a minimum of ____
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1 mm
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If the incisal edge is to be included in the preparation and the tooth length is not to be changed, the incisal edge should be prepared:
a) flat at 90 degrees to the long axis of the tooth b) beveled at 30-40 degrees to the long axis of the tooth c) beveled at 80 degrees to the long axis of the tooth d) none of the above |
B
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T/F
Overlapping the incisal edge changes the path of insertion of the veneer; therefore the proximal walls should converge slightly toward the incisal. |
The statements are TRUE and related
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The tissue surface of the porcelain veneer is usually etched with
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9.5% hydrofluoric acid
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Which of the following cements would be appropriate for porcelain laminate veneer?
a) glass ionomer cement b) light cured resin cement c) zinc phosphate cement d) dual cure resin cement |
B & D
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A silane coupling agent is used on the
a) etched porcelain veneer b) unetched porcelain c) Tooth preparation d) A&C |
Etched porcelain veneer
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To maximize esthetics, all of the following information should be conveyed to the laboratory Except
a) shade of the prepared tooth b) the desired shade of the veneers c) the opacity and translucency level of the porcelain d) none of the above |
D
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In general, tooth reduction for porcelain laminate veneer should be ____ in the gingival 1/3 and ____ in the incisal 2/3
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0.3-0.4mm & 0.5-0.7mm
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T/F
Porcelain veneer preparation must always be temporized |
False
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During the try-in stage, the porcelain veneers should be tried-in
a) individually b) collectively c) dry d) A then B |
D
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Enamel surface is etched with:
a) phosphoric acid b) hydrofluoric acid c) both A&B d) Neither A nor B |
Phosphoric acid
(note: the veneer is etched with hydrofluoric acid) |
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To facilitate visualization of tooth preparation, the teeth should be:
a) prepared dry and rinsed every 10 sec b) preparated wet and inspected dry c) prepared and inspected dry d) either A or B e) None of the above |
D
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After cementation, the patient should be scheduled for follow up:
a) 1 week post insertion b) 4 weeks post insertion c) 6 month postinsertion d) 1 year postinsertion |
1 week postinsertion
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Intrinsic staining can be caused by all of the following EXCEPT:
a) fluoride ingestion b) tetracycline exposure c) excessive coffee drinking d) trauma e) A B and D |
C
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The interproximal contacts should be placed
a) short of the contact b) lingual to the proximal contact c) at the line angles d) none of the above |
Short of the contact
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T/F
When preparing a tooth for a veneer, it is best to include the contact area The inclusion of the contact area improves finishing of the veneer |
Both statements are False
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When preparing a tooth for a porcelain veneer not involving the incisal edge, one needs to prepare the tooth
a) in one plane: facial b) in two planes: incisal and facial c) in two planes: gingival and facial d) in three planes: gingival, proximal and incisal |
D
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The line angles of the veneer preparation should be
a) rounded b) sharp c) tapered d) any of the above |
Rounded
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If needed, adjustments of the porcelain veneer should be performed:
a) on the cast b) in the mouth, before cementation c) after cementation of the veneer d) either b or c |
C
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What is a better etching agent to use for the purposes of resin infiltration as it successfully removes the surface layer?
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5% OR 15%HCL
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In resin infiltration what is the penetration coefficient?
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The higher the number is, the better the material will penetrate into the lesion.
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In resin infiltration, what is meant by contact angles?
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We want a material that will spread into all surfaces. Resin infiltrate spreads well and penetraates into pores much better than flowable composite.
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What are white spots that cannot be treated with resin infiltration?
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Developmental white spots: linear white spots due to growth disturbances, fluorosis, tetracycline staining, cavitated or old lesions
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What is the SOE code for resin infiltration?
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1351-RI
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