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[A comparative study of marginal microleakage using three different cements in ceramic crowns]
1The First Affiliated Hospital, College of Medical Sciences, Zhejiang University, Hangzhou 310003, China.
Summary
Panavia F adhesive luting system showed the least marginal microleakage for IPS-Empress 2 all-ceramic crowns. This dental cement is effective in preventing microleakage in posterior all-ceramic restorations.
Area of Science:
- Dental Materials Science
- Prosthodontics
- Biomaterials
Background:
- All-ceramic crowns, such as IPS-Empress 2, offer aesthetic advantages but require effective luting agents.
- Marginal microleakage can compromise the longevity and integrity of all-ceramic restorations.
- Evaluating different luting cements is crucial for optimal clinical performance.
Purpose of the Study:
- To compare the marginal microleakage of IPS-Empress 2 all-ceramic crowns.
- To assess the efficacy of three distinct dental cements in preventing microleakage.
Main Methods:
- Twenty-four IPS-Empress 2 crowns were luted onto human molars using Panavia F, Dyract compomer, or Harvard zinc phosphate cement.
- Samples underwent thermocycling and immersion in fuchsin dye.
- Marginal microleakage was quantified using light stereomicroscopy.
Main Results:
- Panavia F exhibited significantly lower microleakage compared to Dyract and Harvard cements.
- Harvard zinc phosphate cement showed the highest levels of microleakage across all specimens.
- Statistical analysis confirmed highly significant differences (P<0.01) in microleakage among the tested cements.
Conclusions:
- Panavia F adhesive luting system is the most effective cement for minimizing marginal microleakage with IPS-Empress 2 all-ceramic crowns.
- This adhesive system is recommended for use in posterior all-ceramic restorations to enhance durability.