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Effect of different polymerization techniques on dimensional stability of record bases
1Department of Removable Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia.
The Journal of Prosthetic Dentistry
|February 1, 1994
Summary
This study evaluated five polymerization techniques for maxillary record bases. Curing in a monomer atmosphere resulted in the least dimensional change, improving adaptation accuracy for dental prosthetics.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Polymerization Techniques
Background:
- Accurate adaptation of maxillary record bases to casts is crucial for successful denture fabrication.
- Polymerization techniques can influence the dimensional stability and accuracy of record bases.
- Discrepancies in adaptation can lead to ill-fitting prosthetics and patient discomfort.
Purpose of the Study:
- To analyze discrepancies in the posterior border adaptation of maxillary record bases.
- To compare the dimensional accuracy of five different polymerization techniques.
Main Methods:
- Five polymerization techniques were used: bench curing, curing with petroleum jelly, monomer atmosphere, air pressure, and warm water/air pressure.
- Ten maxillary record bases were fabricated using each technique.
- Dimensional accuracy was measured immediately using a measuring microscope at three specific points.
Main Results:
- All tested polymerization techniques resulted in observable dimensional changes.
- The monomer atmosphere technique demonstrated the least dimensional change among the five methods.
- This suggests superior adaptation of record bases when using the monomer atmosphere technique.
Conclusions:
- Polymerization technique significantly impacts the dimensional accuracy of maxillary record bases.
- Curing in a monomer atmosphere is the most effective technique for minimizing dimensional discrepancies.
- This finding has implications for improving the fit and quality of dental prosthetics.