[Improving the bonding strength of castable ceramic crowns]

Area of Science:

• Dental Materials Science
• Biomaterials Engineering
• Prosthodontics

Background:

• Dental restorations require durable bonding agents for longevity.
• Castable ceramic crowns offer aesthetic and functional benefits.
• Evaluating bonding agents is crucial for clinical success.

Purpose of the Study:

• To compare the fracture strength of castable ceramic crowns bonded with Panavia 21 resin bonding agent versus porcelite dual cure cement.
• To determine the in vitro efficacy of different bonding agents for ceramic crowns on molars.

Main Methods:

• Specimens of Plat-II castable ceramic crowns bonded to molars were tested.
• Two bonding agents were used: Panavia 21 resin bonding agent and porcelite dual cure cement.
• Fracture loading was measured in Newtons (N) under in vitro conditions.

Main Results:

• Crowns bonded with Panavia 21 exhibited a significantly higher fracture loading (845.8 +/- 137.1 N) compared to those bonded with porcelite dual cure cement (534.0 +/- 58.7 N).
• The difference in fracture strength between the two agents was statistically significant (P < 0.05).
• The strength achieved with Panavia 21 exceeded typical bite forces.

Conclusions:

• Panavia 21 resin bonding agent demonstrates superior performance in enhancing the fracture strength of castable ceramic crowns.
• The findings support the clinical use of Panavia 21 for bonding ceramic crowns to molars.
• This research provides valuable data for selecting effective bonding agents in restorative dentistry.