For Better Dentistry

8-year data proves the longevity and reliability of ceram.x one restorations

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8-year data proves the longevity and reliability of ceram.x one restorations
Two clinical studies from Sweden and Italy demonstrate that the nanoceramic restorative filling material ceram.x one is exceptionally high performing. In both prospective studies, ceram.x one was evaluated in class II and class V restorations respectively over a period of eight years. The studies examined retention rates, marginal integrity, anatomical form, colour retention, surface texture and secondary caries. In both classes of cavity ceram.x one proved itself to be highly effective even after eight years - the annual failure rate was less than two percent - an outstanding outcome!

The first clinical study1 was carried out in Sweden by van Dijken and Pallesen and compared the durability of ceram.x one UNIVERSAL in class II restorations that were adhered with a self-etch adhesive with restorations that were adhered with an etch&rinse adhesive. A total of 165 fillings in 78 patients were evaluated at regular intervals. Within the prospective time period there were no significant differences in failure rate between the two groups. After eight years, the failure rate of the self-etch group was 1.63 percent and that of the etch&rinse group 1.69 percent. ceram.x one proved dependable and efficient for these occlusal load-bearing class II restorations – regardless of the adhesive technique.

A further long-term study2 run in Italy by Dondi and Lorenzi tested the reliability of the restorative technique for non-carious cervical defects without employing mechanical retention. This involved providing 50 patients with 100 ceram.x one DENTIN & ENAMEL cervical restorations; for control purposes a further 50 Esthet.X® fillings were also placed. The prime&bond® one ETCH & RINSE adhesive was used throughout. After eight years, the total loss rate was a mere 9.1 percent which equates to an annual failure rate of 1.1 percent. This prospective long-term study confirms that ceram.x one  DENTIN & ENAMEL (in conjunction with prime&bond one ETCH & RINSE) provides excellent performance, even in cervical lesions.

A combination of ceram.x one and the innovative SDR® bulk filling material also results in a particularly high performance: Two prospective clinical studies3,4 by van Dijken and Pallesen showed that ceram.x one is ideal for applying an enamel cap on an SDR restoration. Following a three-year observational period, both clinical studies indicated that the combined ceram.x one/SDR restorations had very low failure rates of only 1.2 and zero percent respectively.


In addition, to its proven reliability and longevity, the ceram.x one nanoceramic restorative is very easily manipulated and has a long working time of up to 180 seconds (ENAMEL shades) and 120 seconds (DENTIN and UNIVERSAL shades). Both product versions create the entire VITA®5 range using only seven shades: ceram.x one UNIVERSAL is available in seven shades with the same degree of medium translucency which help with placing anterior and posterior fillings quickly and easily. ceram.x one DENTIN & ENAMEL includes four dentin and three enamel shades for creating aesthetically sophisticated restorations according to the natural build-up or layering concept. This simplified shading system provides fast and reliable shade selection in addition to providing excellent aesthetics that last for many years.

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Class II restoration placed in tooth 26 using ceram.x one UNIVERSAL. Courtesy of: Prof. Dr. Manhart, University of Munich, Germany.

References

van Dijken JW, Pallesen U. Eight-year randomized clinical evaluation of Class II nanohybrid resin composite restorations bonded with a one-step self-etch or a two-step etch-and-rinse adhesive. Clinical Oral Investigations 2014 Oct 31, [Epub ahead of print].

2 Dondi dall’Orologio G, Lorenzi R. Clinical 8-year follow-up study on ceram·X in class V restorations. Submitted for publication.

3 van Dijken JW, Pallesen U. A randomized controlled three year evaluation of “bulk filled” posterior resin restorations based on stress decreasing resin technology. Dental Materials 2014; 30: e245-e251.

4 van Dijken JW, Pallesen U. Randomized 3-year follow-up of posterior bulk filled resin composite restorations. Abstract for IADR, 2014, Dubrovnik.

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