A labially displaced anterior tooth is restored with a gold core porcelain jacket crown so that it is in line with the arch; the crown will appears: A. Short B. Long C. Narrow D. Wide

A labially displaced anterior tooth is restored with a gold core porcelain jacket crown so that it is in  line with the arch; the crown will appears:
A. Short
B. Long
C. Narrow
D. Wide
by

1 Answer

Answer :

C. Narrow
by

Related questions

A lateral incisor labial to the arch needs to be restored in normal alignment with PFM retraction. How will the tooth appear: A. Too wide B. Too short C. To narrow D. To long

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Last Answer : C. To narrow

The major cause of jacket crown breakage is, A. Inclusion of platinum foil B. Use of weak cementum C. Voids of porcelain D. Porcelain is thinner than 1mm

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The periodontal ligament in a tooth without use appears to be: A. Narrow B. Wide

Description : The periodontal ligament in a tooth without use appears to be: A. Narrow B. Wide

Last Answer : A. Narrow

In regard to apically displaced flap, what is TRUE: A. Does not preserve attached gingivae B. Does not lengthen crown of tooth C. Is a pocket elimination procedure D. A & C

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The minimal labial tooth reduction for satisfactory aesthetics with porcelain fused to metal crown is, A. 1mm B. The full thickness of enamel C. 1.5 mm D. 2.5mm E. One third of the dentine thickness

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Last Answer : C. 1.5 mm

“Pop off” of a porcelain veneer from the under the lying gold crown is due to:** A. Too thick application of pure gold surface conditioner B. Contamination at the porcelain metal interface C. Under firing the opaque layer D. All of the above

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The cervical finish line of a full veneer crown preparation should be placed: A. Just supragingival whenever is possible B. According to the depth of gingival crevice C. Subgingival to reduce ability of recurrent caries D. At the junction of tooth and amalgam core

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Last Answer : A. Just supragingival whenever is possible

What contraindicates pulp capping: A. Accidental exposure on vital young molars B. When inflammation of radicular pulp is already present C. When roots are greatly curved and tortuous D. When anterior tooth is vital and immature with wide open apices E. None of the above

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The ideal length of core in the fabrication of crown and core of endodontically treated tooth is, A. 1.5 of crown length B. The length of the crown C. 2/3 tooth/root length D. ½ root length

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A vital tooth has a crown cemented to a pin-retained amalgam core; where does a failure occur: A. Between crown and cement B. Between core and cement C. In the crown and the root D. In the core and the margin preparation

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Last Answer : B. Between core and cement

What is the ideal length for a post in post-core in an endodontically treated tooth: A. 2/3 of the tooth length B. ½ of the tooth length C. 1.5 times that of the crown D. Same as the anticipated crown

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In the construction of a full veneer gold crown, future recession of gingival tissue can be prevented or at least minimised by, A. Extension of the crown 1 mm under the gingival crevice B. Reproduction of normal tooth incline in the gingival one third of the crown C. Slight over contouring of the tooth in the gingival one fifth of the crown D. Slight under contouring of the tooth in the gingival one fifth of the crown

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Last Answer : B. Reproduction of normal tooth incline in the gingival one third of the crown

When should metallic framework not be contaminated during the fabrication of a porcelain fused to metal crown: A. Between bisque stage and glazing stage B. Between preheat and opaque stages C. Between opaque and bisque stages D. Between one opaque and two opaque stages

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Last Answer : b.parallel to the nearest external surface

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Description : An advantage of metal. ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness. B. Overall conservative for tooth structure. C. Ability to watch the appearance of adjacent natural teeth. D. Less laboratory time.

Last Answer : A. Palatal reduction may be of minimal thickness.

An advantage of metal-ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness B. Overall conservative for tooth structure C. Ability to watch the appearance of adjacent natural teeth D. Less laboratory time

Description : An advantage of metal-ceramic crowns, compared wit full ceramic crowns for restoring anterior teeth is, A. Palatal reduction may be of minimal thickness B. Overall conservative for tooth structure C. Ability to watch the appearance of adjacent natural teeth D. Less laboratory time

Last Answer : A. Palatal reduction may be of minimal thickness

The OPTIMUM crown to root ratio for abutment tooth is:** A. 2:3 B. 1:1

Description : The OPTIMUM crown to root ratio for abutment tooth is:** A. 2:3 B. 1:1

Last Answer : A. 2:3

A cast crown fits on the die but not on the tooth, the discrepancy is about 0.3mm, what would you do: A. Relieve cast from the inside B. Take a new impression and make new crown C. Burnish margins D. Use thick mix of cement

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Last Answer : C. Epithelium trapped after sutures

When you try to seat a crown on a tooth you find a discrepancy of 0.3mm at the margin; you will: A. Reduce inner surface of crown B. Remake a new crown C. Smooth the enamel at the margin D. Hand burnish crown margins

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Last Answer : B. Remake a new crown

A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown can BEST be achieved by: A. Hand burnishing B. Mechanical burnishing C. Using finishing burs and points to remove the enamel margins on the tooth D. Making a new impression and remaking the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

Description : A crown casting with a chamfer margin fits the die; but in the mouth the casting is open approximately 0.3mm. A satisfactory fit and accurate physiological close of the gingival area of the crown ... the crown E. Relieving the inside of the occlusal surface of the casting to allow for further

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In bridge work, which of the followings terms is NOT CORRECT: A. A retainer could be a crown to which a bridge is attached to B. A connector connects a pontic to a retainer or two retainers to each other C. The saddle is the area of the edentulous ridge over which the pontic will lie and comes in contact with pontic D. A pontic is an artificial tooth as part of a bridge

Description : In bridge work, which of the followings terms is NOT CORRECT: A. A retainer could be a crown to which a bridge is attached to B. A connector connects a pontic to a retainer or two retainers to each ... lie and comes in contact with pontic D. A pontic is an artificial tooth as part of a bridge

Last Answer : C. The saddle is the area of the edentulous ridge over which the pontic will lie and comes in contact with pontic

Which of the following is NOT a characteristic of glass ionomer cements? a. strong in compression but weaker in tension True b. the matrix is formed during the initial set of the cement c. sets via an ion exchange reaction that continues for at least 24 hours true d. suitable for use as a core build up material in anterior teeth

Description : Which of the following is NOT a characteristic of glass ionomer cements? a. strong in compression but weaker in tension True b. the matrix is formed during the initial set of the cement c. sets via ... for at least 24 hours true d. suitable for use as a core build up material in anterior teeth

Last Answer : d. suitable for use as a core build up material in anterior teeth

In radiographs, an incipient carious lesion limited to the end of the proximal surface of a posterior tooth appears as: A. Radiopaque area B. Triangle with apex towards the tooth surface C. Larger in radiographs than actual lesion D. All of the above E. None of the above

Description : In radiographs, an incipient carious lesion limited to the end of the proximal surface of a posterior tooth appears as: A. Radiopaque area B. Triangle with apex towards the tooth surface C. Larger in radiographs than actual lesion D. All of the above E. None of the above

Last Answer : B. Triangle with apex towards the tooth surface

A large amalgam core is to be condensed around several pins in a vital molar tooth; what type of amalgam mix would you prefer: A. A large mix to ensure homogeneity B. A large with extra mercury to give easier manipulative qualities C. Several small mixes, sequentially triturated D. Several small mixes with varying mercury/alloy ratios E. A basic mix to which additional mercury is added as needed

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A female patient comes to you complaining of persistent pain in a heavily restored central incisor; you suspect pulpitis and you have been told that she is in transit leaving by plane next day. Your treatment will be, A. Remove filling and place a sedative dressings B. Pulp extirpation and obturate with Ledermix dressings C. Prescribe analgesics and systemic antibiotic

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Last Answer : B. Pulp extirpation and obturate with Ledermix dressings

Marginal leakage at the proximal gingival cavosurface of a recently restored class II can be caused by: I. Insufficient condensation II. First proximal increment was too large III. Neglecting to wedge the matrix IV. Hand manipulation instead of mechanical V. Debris contamination A. I, II, III B. II, III, IV C. I, II, V D. None of the above E. All of the above

Description : Marginal leakage at the proximal gingival cavosurface of a recently restored class II can be caused by: I. Insufficient condensation II. First proximal increment was too large III. Neglecting to wedge the matrix IV. Hand ... III, IV C. I, II, V D. None of the above E. All of the above

Last Answer : C. I, II, V

If you have a tooth pulled with a gold crown on it, should they give you the crown?

Description : If you have a tooth pulled with a gold crown on it, should they give you the crown?

Last Answer : answer:I always ask for the gold from dental work. There is ever any issue. But no dentist in my memory (past or future) has offered it. Of course, ask someone for it.

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Description : The depth of an arch is the distance between (A) Ground level and springing line (B) Crown and springing line (C) Crown and ground level (D) Intrados and extrados

Last Answer : Answer: Option D

The triangular space formed between the extrados and the horizontal line drawn through the crown of an arch is known as (A) Haunch (B) Spandril (C) Voussoirs (D) Skewbacks

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Last Answer : Answer: Option B

A palatal root displaced into the antrum while extracting; what is your decision to retrieve it: A. Through the alveolar B. Surgical opening of canine fossa C. Nasal antrostomy

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Which one of this restorative methods will be LEAST compromised by a core, A. Amalgam B. Composite C. GIC D. Cast gold

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Last Answer : A. Color stability and resistance to abrasion

What is the minimal labial reduction for porcelain metal crowns: A. 1mm B. 1.5mm C. 0.5mm

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Last Answer : B. 1.5mm

Porcelain must not be contaminated by handling between which two stages: A. Pre-soldering and heat treatment B. Heat treatment and opaque /bake/ stages C. Opaque and bisque stages D. Bisque and glazing stages E. First opaque bake and second opaque bake

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Last Answer : A. Pre-soldering and heat treatment

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Last Answer : A. Reduces size of air-bubbles incorporated thus decreasing porosity

The most common failure in constructing porcelain to metal is: A. Improper metal framework B. Rapid heating

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Last Answer : A. Improper metal framework

Rough surface/Porosity of porcelain is a result of: A. Lack of compression/ condensation B. Sudden high temperature

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Which nerve is anesthesised in anterior border of ramus and 1 cm above occlusal plane of lower posterior teeth: A. Lingual nerve B. Long buccal nerve

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Which of the following will NOT be used in determination of vertical dimension? a. Aesthetic b. Phonetics c. Gothic arch tracing. d. Swallowing

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Which of the following will NOT be used in the determination of vertical dimension: A. Aesthetic B. Phonetics C. Gothic arch tracing D. Swallowing

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The MOST common consequence arising from premature extraction of deciduous molars is: A. Loss of arch length B. Loss of speech sound C. Loss of facial contour D. Loss of vertical height E. Loss of free way space

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The MOST common consequence arising from premature extraction of deciduous molar is: A. Loss of arch length B. Loss of speech sound C. Loss of facial contour

Description : The MOST common consequence arising from premature extraction of deciduous molar is: A. Loss of arch length B. Loss of speech sound C. Loss of facial contour

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