Consultants’ Comments

• “Loved the material – it was easy to work with a very reliable bond.”
• “I cemented two minimally retentive bridges with excellent results.”
• “Quick and easy, I like it.”
• “After seating a restoration, spot cure for not more than two seconds; otherwise, the set material is hard to remove.”

Description

RelyX Ultimate Adhesive Resin Cement is an adhesive resin cement available in a dual-barrel syringe with a mixing tip for easy mixing and dispensing. Used in conjunction with Scotchbond Universal Adhesive, a new all-purpose bonding agent, it results in high bond strength to both enamel and dentin – measured to be over 30 MPa by THE DENTAL ADVISOR. RelyX Ultimate Adhesive Resin Cement includes a component that activates the self-cured function of the bonding agent and eliminates the need for an additional activator. Scotchbond Universal Adhesive also functions as a primer for silica-based ceramics, zirconia and metal substrates. In addition, it can also be used with total-etch and self-etch bonding techniques. The combination can be used for cementing silica-based ceramic, zirconia, PFM, and CAD/CAM restorations. RelyX Ultimate Adhesive Resin Cement is available in shades: A1/Light, A3 Opaque, B0.5/White, and Translucent.

Evaluation Protocol

During a 15-month period, over 700 restorations were cemented with RelyX Ultimate Adhesive Resin Cement and Scotchbond Universal Adhesive by four dentists. The restorations included mostly crowns; bridges (3, 4 and 5 units); and a few inlays, onlays and veneers. The vast majority were silica-based ceramic and zirconia restorations.

Results at One Year

Two hundred and seventy five restorations (Figure 1) were recalled over a three-month period. The recalled restorations were evaluated for lack of sensitivity, resistance to marginal staining and retention. Each category was rated on a scale of 1 to 5. 1=poor, 2=fair, 3=good, 4= very good, and 5=excellent.

Lack of sensitivity
Lack of sensitivity was rated excellent (Figure 2). Ten patients reported mild to moderate sensitivity lasting for a period of a few days after cementation. Only one patient experienced sensitivity that lingered for about one month and then dissipated after an occlusal adjustment.

Resistance to marginal staining
Resistance to marginal staining was rated excellent (Figure 2). Five of the recalled patients presented with very slight discoloration (a rating of 4) at the margin that did not require intervention. One patient experienced significant discoloration of posterior crown requiring replacement.

Retention
Retention was rated excellent (Figure 2). Three crowns and two veneers debonded during the first 15 months of service. This represents a debond rate of less than 0.2%. The two veneers debonded shortly after cementation, and it is possible that the material was not adequately mixed. Overall, the debonding rate has been low, attesting to the high bond strength of the cement to tooth structure.

Conclusion

RelyX Ultimate Adhesive Resin Cement used with Scotchbond Universal Adhesive performed exceptionally well at the one-year recall, based on observations of low sensitivity, minimal marginal discoloration and a very low debonding rate. RelyX Ultimate Adhesive Resin Cement received a 99% clinical performance rating.