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Related Experiment Videos

Comparison of three luting agents.

M Iwaku, T Takatsu, T Fusayama

    The Journal of Prosthetic Dentistry
    |April 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    This study compared three luting cements, finding that water-settable polycarboxylate cement exhibited the most neutral pH, least disintegration in water, and thinnest film. Zinc phosphate cement showed higher acidity during setting.

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    Area of Science:

    • Dental Materials Science
    • Biomaterials Engineering

    Background:

    • Luting cements are crucial for dental restorations.
    • Understanding cement properties like acidity and disintegration is vital for clinical success.
    • Previous research has focused on specific cement types, necessitating comparative studies.

    Purpose of the Study:

    • To compare the acidity, disintegration, and film thickness of three luting cements.
    • To evaluate the performance of water-settable polycarboxylate cement against traditional polycarboxylate and zinc phosphate cements.
    • To provide data aiding in the selection of appropriate luting cements.

    Main Methods:

    • Three luting cements were tested: two polycarboxylate types and one zinc phosphate cement.
    • Acidity was measured by pH during setting over 24 hours.

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  • Disintegration was assessed in distilled water and lactic acid solution.
  • Film thickness was determined using standardized methods.

    • Main Results:

    • Polycarboxylate cements approached neutral pH (exceeding 6) within 5 hours, with water-settable polycarboxylate being highest.
    • Zinc phosphate cement exhibited lower pH (3.4 after 5 hours, 5.5 after 24 hours).
    • All cements showed greater disintegration in lactic acid than distilled water; water-settable polycarboxylate had the least disintegration in water.
    • Film thickness was minimal for the water-settable polycarboxylate cement.

    Conclusions:

    • Water-settable polycarboxylate cement demonstrates favorable properties regarding pH, water disintegration, and film thickness compared to zinc phosphate and conventional polycarboxylate cements.
    • The enhanced properties suggest potential for improved clinical performance and longevity of restorations luted with water-settable polycarboxylate cement.
    • Further in-vivo studies are warranted to confirm these findings in clinical settings.