Retention of implant-supported zirconium oxide ceramic restorations using different luting agents

作者：Nejatidanesh Farahnaz; Savabi Omid^*; Shahtoosi Mojtaba

来源：Clinical Oral Implants Research, 2013, 24: 20-24.

DOI：10.1111/j.1600-0501.2011.02358.x

• cementation
• methods
• crowns
• dental cement
• chemistry
• dental prosthesis retention
• zirconium chemistry

Objective: The aim of this study was to evaluate the retention value of implant-supported zirconium oxide ceramic copings using different luting agents. %26lt;br%26gt;Method and materials: Twenty ITI solid abutments of 5.5mm height and ITI implant analogs were mounted vertically into autopolymerizing acrylic resin blocks. Ninety zirconium oxide copings (Cercon, Degudent) with a loop on the occlusal portion were made. All samples were airborne particle abraded with 110m Al2O3 and luted using different types of luting agents: resin cements (Clearfil SA, Panavia F2.0, Fuji Plus), conventional cements (Fleck%26apos;s, Poly F, Fuji I), and temporary cements (Temp Bond, GC free eugenol, TempSpan) with a load of 5Kg. (N=10) All copings were incubated at 37 degrees C for 24h and conditioned in artificial saliva for 1week, and thermal cycled for 5000 cycles 5-55 degrees C with a 30-s dwell time. The dislodging force of the copings along the long axis of the implant-abutment complex was recorded using universal testing machine with 5mm/min crosshead speed. Data were subjected to Kruskal-Wallis (=0.05) and Mann-Whitney tests with Bonferroni step down correction (=0.001). %26lt;br%26gt;Results: There was significant difference between the mean rank retention values of different luting agents (P%26lt;0.001). The resin cements showed the highest retention (Clearfil SA, 203.49 +/- 52.86; Fuji Plus, 190.61 +/- 48.00; Panavia F 2.0, 172.16 +/- 70.76N). The conventional cements had more retention than the temporary cements and glass ionomer cement (P%26lt;0.001). %26lt;br%26gt;Conclusion: The retention of zircona ceramic restorations, over ITI solid abutments may be influenced by the type of cement. The application of an MDP-containing resin and resin-modified glass ionomer luting agents increase the retentive value of implant-supported zirconium oxide restorations.

• 出版日期2013-8