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Quantitative cement solubility experiments in vivo.

L J Pluim, J Arends, P Havinga

Journal of Oral Rehabilitation

|March 1, 1984

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Dental luting cements were tested in vivo for up to 6 months. Zinc-phosphate cement dissolved significantly faster than glass-ionomer cement.

Area of Science:

Biomaterials Science
Dental Materials Science
Clinical Dentistry

Background:

Dental luting cements are crucial for prosthodontic restorations.
Understanding cement solubility in the oral environment is vital for long-term restoration success.
Longitudinal studies evaluating cement dissolution in vivo are limited.

Purpose of the Study:

To quantitatively assess the in vivo dissolution and dissolution rates of dental luting cements over time.
To compare the longitudinal solubility of zinc-phosphate cement and glass-ionomer cement under clinical conditions.

Main Methods:

Cement samples were incorporated into full prostheses and worn by patients for up to 6 months.
Surface replicas of cement were created at regular intervals.

Related Experiment Videos

Scanning Electron Microscopy (SEM) stereographic photography and stereometry were used to quantify surface changes and measure distances between cement and enamel surfaces.

Main Results:

Zinc-phosphate cement exhibited an average in vivo solubility rate of approximately 80 microns per week.
Glass-ionomer cement demonstrated a significantly lower in vivo solubility rate of approximately 2 microns per week.
The study provides quantitative data on the longitudinal degradation of luting cements in the oral environment.

Conclusions:

Glass-ionomer cement shows superior solubility resistance compared to zinc-phosphate cement in vivo.
The findings have implications for selecting appropriate luting cements based on desired longevity and clinical performance.
Further research could explore other cement types and long-term clinical outcomes.