Dental Restoration Materials
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Questions and Answers

What is the primary advantage of indirect restorations in extensive lesions?

  • Lower cost
  • Easier contouring outside the patient mouth (correct)
  • Higher strength requirements
  • Better esthetics

Why may Amalgam be favored in patients with moderately high caries incidence?

  • Due to its superior esthetics
  • Due to its easier repair
  • Due to its higher strength requirements
  • Due to its superior adaptation and low cost (correct)

What is a characteristic of spherical alloys?

  • Higher mercury-alloy ratios
  • Higher condensation pressures
  • Larger particle sizes
  • Lower mercury-alloy ratios (correct)

What is the primary disadvantage of using spherical alloys for extensive restorations?

<p>Difficulty in establishing proper contours and proximal contact (B)</p> Signup and view all the answers

Why may resin composite restorations be favored in esthetic conscious patients?

<p>Due to their better esthetics (B)</p> Signup and view all the answers

What is the primary advantage of blended shapes of alloy particles?

<p>Wider range of applications (C)</p> Signup and view all the answers

What is the primary advantage of using Amalgam in cases where repeated remakes are likely to occur?

<p>Lower cost in the long run (A)</p> Signup and view all the answers

In what type of teeth is the soft Amalgam recommended?

<p>Pulp capped teeth (B)</p> Signup and view all the answers

What is the main reason why amalgam should not be carved in a direction from the restoration to the tooth structure?

<p>It leads to submargins and ditch formation (C)</p> Signup and view all the answers

What is the purpose of post-carve burnishing in amalgam restorations?

<p>To improve the marginal seal and surface hardness (C)</p> Signup and view all the answers

Why should the patient avoid chewing on the restored tooth for 8-24 hours after the procedure?

<p>To prevent cracking or fracturing of the restoration (D)</p> Signup and view all the answers

What is the main advantage of using high-copper alloys in amalgam restorations?

<p>They have a tendency of self-polishing (A)</p> Signup and view all the answers

What is the primary function of bonding systems containing 4-META in amalgam restorations?

<p>To improve the marginal seal and retention form (D)</p> Signup and view all the answers

What is the main benefit of polishing amalgam restorations?

<p>It improves the marginal adaptation of the restoration (D)</p> Signup and view all the answers

What is the main disadvantage of premature finishing and polishing of amalgam restorations?

<p>It interferes with the crystalline structure of the hardening amalgam (A)</p> Signup and view all the answers

What is the main advantage of using adhesive resins in amalgam restorations?

<p>They improve the marginal seal and retention of the restoration (D)</p> Signup and view all the answers

What is the primary reason for not over-tightening the band during posterior resin restorations?

<p>To prevent flexing of the cusps and resulting post-restoration sensitivity (A)</p> Signup and view all the answers

In which type of teeth is the use of a specific technique indicated for amalgam restorations?

<p>Tilted and partially erupted teeth (A)</p> Signup and view all the answers

What is the primary advantage of using capsules as the form of alloy/mercury supply?

<p>Elimination of mercury spills and exposure to mercury vapor (D)</p> Signup and view all the answers

What is the critical factor in the selection of the amalgam alloy?

<p>All of the above (D)</p> Signup and view all the answers

What is the primary disadvantage of using the technique described for resin restorations?

<p>It does not offer optimal contour and contact (A)</p> Signup and view all the answers

What is the purpose of the trituration step in the amalgam manipulation technique?

<p>To mix the alloy and mercury (B)</p> Signup and view all the answers

What is the consequence of inaccurate alloy/mercury ratio in the amalgam mixture?

<p>Weakened mechanical properties (B)</p> Signup and view all the answers

What is the advantage of using the described technique for amalgam restorations?

<p>It allows for better visibility (C)</p> Signup and view all the answers

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