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Related Experiment Videos

Low force cementation

P R Wilson1

  • 1School of Dental Science, University of Melbourne, VIC, Australia.

Journal of Dentistry
|July 1, 1996
PubMed
Summary
This summary is machine-generated.

Proper seating force and venting are crucial for optimal cast crown cementation. Using specific dental cements like Ketac-Cem Applicap with venting minimizes marginal elevation, ensuring better restoration fit and longevity.

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Area of Science:

  • Dental Materials Science
  • Prosthodontics
  • Biomaterials Engineering

Background:

  • Marginal adaptation of full coverage restorations is critical for long-term success.
  • Luting agents and cementation techniques can significantly impact marginal opening.
  • Increased marginal opening poses risks to pulpal and periodontal health.

Purpose of the Study:

  • To investigate the influence of seating forces, venting, and cement type on post-cementation marginal elevation in cast crowns.
  • To identify optimal conditions for minimizing marginal discrepancies during crown cementation.

Main Methods:

  • A standardized 40-micron cement space was created between a gold crown and a stainless steel die.
  • Two types of dental cements (Phosphacap, Ketac-cem Applicap) were used.

Related Experiment Videos

  • Post-cementation crown elevation was measured under varying seating forces (2.5, 12.5, 25 N) with and without occlusal venting.

    • Main Results:

    • Ketac-Cem Applicap with crown venting resulted in less than 20 microns of elevation at 12.5 N seating force.
    • Phosphacap required higher forces (25 N) and venting to achieve comparable seating (19 microns).
    • Seating force and venting significantly influenced post-cementation marginal elevation.

    Conclusions:

    • The required seating force for maximum cast crown seating is cement-specific.
    • Effective venting procedures significantly reduce the necessary seating force.
    • Optimizing cementation parameters is essential for achieving predictable marginal adaptation.