Infinity^®
Hybrid Resin Ionomer Cement
Research Reference Guide

1. THE DENTAL ADVISOR, Vol. 19, No. 10, December 2002.

Clinical consultants awarded Infinity Syringeable a 4 1/2-PLUS rating. The evaluators stated, “Infinity Syringeable is a highly recommended, dual-cured, resin ionomer cement for crown and bridge cementation.” It received a 91% rating. They also commented about the quick, easy delivery with excellent consistency, and thought the mixing tips were very good for cement placement.

2. Assmusen, E., “Adherence of Resin-Based Luting Agents Assessed by the Energy of Fracture,” ACTA Odontal Scand, 1993: 151.

The statistical analysis showed that Infinity cement has a significantly higher fracture resistance (80% greater) than Panavia EX (Kuraray), and also out-performed ABC Dual (Vivadent), Comspan Opaque (Caulk/Dentsply), Duralingual (Unitek), Porcelite Dual Cure (Kerr), and Twinlook (Kulzer).

3. White, S.N., Yu, Z., “Physical Properties of Fixed Prosthodontic, Resin Composite Luting Agents,” International Journal of Prosthodontics, Vol. 6, 1993: 384-389.

This study compares the physical properties of six resin-composite luting agents and one control. Results indicated that C&B Metabond suffered considerable plastic deformation; Panavia EX failed to meet ADA type II specifications; All-Bond Crown and Bridge Cement’s film thickness was greater than the negative control. Infinity, however, demonstrated good compressive and diametral tensile strengths and an acceptable film thickness.

4. White, S.N., Yu, Z., “Compressive and Diametral Tensile Strengths of Current Adhesive Luting Agents,” Journal of Prosthetic Dentistry, Vol. 69, 1993: 568–572.

Results indicate that Infinity exhibited a compressive strength of 140.7 MPa compared to 62.1 MPa for zinc phosphate cement. In regards to diametral tensile strength, Infinity yielded a strength of 23.1 MPa compared to 9.3 MPa for zinc phosphate cement. In conclusion, Infinity exhibited significantly greater compressive and diametral tensile strengths than zinc phosphate cements.

5. White, S.N., Yu, Z., “Film Thickness of New Adhesive Luting Agents,” Journal of Prosthetic Dentistry, Vol. 67, 1992: 782-785.

Infinity met the ADA Type II specification for film thickness of less than 40 microns. It should be noted that ADA Type II materials are recommended for all uses except the cementing of precision appliances.

6. Strassler, H.E., “An Auto-Mixing Resin Ionomer Cement,” Compendium of Continuing Education in Dentistry
^®, Vol. 23, No. 4, April 2002: 360.

Infinity resin ionomer cement has been used successfully in dentistry for more than 10 years. In addition, the author has found it to be one of the most biocompatible resin cements and, when used with Tenure^®, noted a significant reduction in postcementation sensitivity. A recent innovation is the use of an automix syringe for dispensing and mixing to making the task of cementation
more consistent and easier.

7. Freedman, G., “Short Crown Solution,” Cosmetic Dentistry Update 1992: 48.

This article discusses the problems of debonding often associated with cementing a crown to a tooth with a very short clinical length. The author advocates the use of a resin ionomer, such as Infinity, because of the following reasons: high bond strength, fluoride release, insolubility, and decrease in microleakage. Additionally, Infinity safe to use, does not require the use of an oxygen inhibitor, has radiopacity, and offers a working time of four (4) minutes.

8. White, S.N., Yu, Z., Tom, J.F., Sangsurasak, S., “In Vivo Marginal Adaptation of Cast Crowns Luted with Different Cements,” Journal of Prosthetic Dentistry, Vol. 74, 1995: 25–32.

This study showed that after crown cementation with Infinity and Infinity + Tenure, marginal discrepancies were within commonly accepted ranges of clinical acceptability. The use of Tenure did not increase marginal gap discrepancies.

9. THE DENTAL ADVISOR PLUS, July – August 1995.

The evaluators of THE DENTAL ADVISOR reported a 4-STAR rating from their clinical findings after evaluating Infinity. The report stated that Infinity is highly recommended as a multi-purpose, dual-cure, resin cement.

10. White, S.N., Yu, Z., Tom, J.F., Sangsurasak, S., “In Vivo Microleakage of Luting Cements for Cast Crowns,” Journal of Prosthetic Dentistry, Vol. 71, 1994: 333–337.

Statistical analysis revealed meaningful differences between Infinity and Infinity/Tenure All-Surface Bonding System compared to zinc phosphate. 

11. Clinical Research Associates Newsletter, Vol. 17, Issue 5, May 1993.

This newsletter describes resin cements and provides clinical indications for their use. It details the uses for one material, Infinity:

1) Standard cementation procedures for crowns and fixed prostheses
2) Cementation procedures for ceramic or resin crowns
3) Cementation procedures for fixed prostheses requiring high retention
4) Repair of crowns
5) Cementation of ceramic and resin inlays and onlays
6) Cementation of gold alloy inlays, onlays, or resin retained adhesion prostheses
7) Cementation of metal-to-metal in implant dentistry
8) Cementation of posts

12. White, S.N., et al., “Fatigue of Resin Cement-Based Metal Alloy Bond Strength,” Journal of Prosthetics, Vol. 5, 1996: 253-258.

This study investigated the bond strength of nine resin cements to a base metal alloy. Artificial aging with various numbers of thermo cycling was employed. This study demonstrated that Infinity bonds remained stable throughout the testing. The bond strengths of the other cements dropped significantly. 

13. Millstein, P., et al., “The Effect of Composite Resin-Ionomer Cements and Cores on Crown Core Retention,” Journal of Dental Research, Vol. 76, Abs. No 1353, Mar. 1997.

This study focuses on the relationship of core materials, cements, and the interaction between the two as being highly significant, showing Core Paste to be the most retentive.