A major difference between light cured and chemical cured composite is that during setting or in function the light cured material tends to:******** VERY IMP A. Seal the margins better and completely B. Exhibit less wear on time C. Undergo greater colour change D. Shrink more rapidly E. Posses greater fracture toughness

A major difference between light cured and chemical cured composite is that during setting or in  function the light cured material tends to:******** VERY IMP
A. Seal the margins better and completely
B. Exhibit less wear on time
C. Undergo greater colour change
D. Shrink more rapidly
E. Posses greater fracture toughness
by

1 Answer

Answer :

D. Shrink more rapidly
by

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When considering visible light cured composites, which of the following statements is incorrect? A. An air-inhibited layer is present superficially on the composite. B. The wavelength of the light which affects the initiator is in the range of 450 to 500 nanometers. C. All other things equal. The light generally penetrates deeper into a small-particle composite than it does into a microfilled composite. (smaller particles absorb more light) D. B and C E. All are true

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Which of the following statement about the defective margins of amalgam restorations is true?+M07 A. The larger the breakdown, the greater the chance of decay. IF THERE IS MARGINAL BREAKDOWN THIS DOSNT NECESSITATE THE PRESENCE OF CARIES ALONG MARGIN So the ans is Chances are increased

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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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A patient is complaining of an open sore on the buccal mucosa. The lesion is painless, ulcerated, has indurated margins, 1.5 cm in diameter, covered by greyish-white exudate, enlarged lymph nodes and tender, negative tuberculin test and positive serology. The diagnosis is

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Reconstitution of the epithelial barrier (epithelialization) begins within hours of the initial injury. Which of the following statement(s) is/are true concerning the process of epithelialization? a. Bacteria, protein exudate, and necrotic tissue all will compromise this process b. Epithelial cells exhibit contact proliferation c. Epithelialization occurs only from the margins of the wound d. Visible scarring can occur only when the injury extends deeper than the superficial dermis

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Which of the following factors can affect the shape and size of the pulp canal: A. Chemical irritation and caries B. Trauma and function C. Attrition, wear and aging of the patient D. All of the above

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An 8 years-old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed presents for treatment three hours after injury. Which of the following should be considered? a- Remove the surface 1. 2 mm of pulp tissue and place calcium hydroxide. b- Place calcium hydroxide directly on the exposed pulp. c- Pulpotomy using formocresol. d- Pulpectomy and immediate root filling. e- Pulpectomy and apexification.

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Last Answer : a- Remove the surface 1. 2 mm of pulp tissue and place calcium hydroxide

What indicates for a periapical surgery: A. Where performing an endodontic treatment on existing root canal filling may lead to fracture of the root B. When root canal treatment is faulty C. When there is danger of involving other structures D. When the bony defect is so extensive that the edges of the incisors will collapse E. None of the above

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In maxilla fracture, if intra cranial pressure increases:** A. It is normal B. Typically associated with tachycardia C. Associated with blood pressure D. Usually subsides spontaneously E. Typically associated with constricted and un-reactive pupil

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8 years old child who has sustained a fracture of maxillary permanent central incisor in which 2mm of the pulp is exposed; presents for treatment three hours after injury. Which of the following should be considered? M07*********** A. Remove the surface 1-2 mm of pulp tissue and place calcium hydroxide (Cvek pulpotomy, apexogenesis) B. Place calcium hydroxide directly on the exposed pulp C. Pulpotomy using formocresol D. Pulpectomy and immediate root filling E. Pulpectomy and apexification

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Last Answer : A. Remove the surface 1-2 mm of pulp tissue and place calcium hydroxide (Cvek pulpotomy, apexogenesis)

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The un-polymerized monomer in Self-cured resin is approximately:** A. 0.5% B. 2.5% C. 5% D. 10%

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The most common cause of fracture at the isthmus of class II dental amalgam restoration is: A. Delayed expansion B. Inadequate depth at the isthmus area C. Inadequate width at the isthmus area

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A blow to the mandible resulted in deviation to the left on opening; x-rays show unilateral fracture, where would you expect the fracture:** A. Neck of the left condyle B. Neck of the right condyle C. Body of the left condyle D. Body or the right condyley

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Last Answer : A. Neck of the left condyle

A patient suffers a blow to his maxillary central incisor without resulting in fracture. The pulp may: A. Show immediate necrosis B. Become non-vital but only if treatment is delayed too long C. Become non vital irrespective of treatment D. No changes are seen later if fracture does not occur

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Last Answer : C. Become non vital irrespective of treatment

A child with a fracture of a tooth at the apical third of the root, what would be your first decision: A. Wait and recall after one month and observe for any necrotic or radiolucency B. Root canal treatment C. Extraction D. Apiectomy

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When repairing a fracture of a lower complete denture, which statement is correct: A. Self curing will distort the denture B. Cold curing will not be strong enough because of small area of attachment C. There is a possibility of occlusal disharmony

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