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 Restorations after 4 years in-vivo
Title: 3M ESPE RelyX™ Unicem Self-Adhesive Universal Resin Cement
4-year Clinical Performance
Published in: THE DENTAL ADVISOR, Vol. 24, No. 4, May 2007
Aim of the study: The evaluators of THE DENTAL ADVISOR used RelyX™
Unicem cement for cementing restorations made of full
ceramic, metal, PFM and composites (crowns, bridges,
inlays/onlays, posts).
RelyX Unicem cement was evaluated in the categories postoperative sensitivities, microleakage and debonding.
Results: Post-operative sensitivities only occurred with few patients after cementation with RelyX Unicem. The number
of microleakage for cementations is comparable to that of multi-step resin cements with 5th generation bondings.
The loss rate of restorations cemented with RelyX Unicem is only 0.6%. In total, RelyX Unicem cement
received a clinical rating of 98%, so that THE DENTAL ADVISOR awards its top grade of 5 stars also after
4 years
Observation period: 4 years
Results (in %):
Postoperative sensitivities (n = 1560) 1.8%
Marginal discolorations (n = 1560) 4.2%
"Debonding" rate (n = 4400) 0.7%
Allocation of the restorations:
All-ceramic crowns and bridges = 42%
PFM crowns and bridges= 31%
Posts = 1%
All-ceramic inlays/onlays= 26%
Read the full study (PDF, 367KB)
Full ceramic inlays and onlays after 12 months in-vivo
Title: Ceramic inlays luted with a self-adhesive cement after one year.
Published by: M. Taschner, R. Frankenberger, A. Petschelt, and N. Krämer, University of Erlangen, Germany.
Published in: AADR 2006, Florida #1361
Complete Abstract: 3M ESPE Scientific Facts, March 2006.
Aim of the study: In this in-vivo study RelyX™ Unicem cement was compared with a total-etch-system (Syntac®, Variolink® II,
Ivoclar Vivadent). In the split-mouth-design, IPS Empress inlays and onlays were cemented with both systems and
clinically examined after a wearing time of 12 months.
Results: After one year of service time the one-step cement RelyX Unicem cement proves just as good as the
total-etch-system Syntac/Variolink II. Postoperative sensitivities did not occur.
Observation period: 12 months
Average age of patients: 39 years
Read the full study (PDF, 367KB)
Glass ceramic inlays and onlays after 12 months in-vivo
Title: Clinical Comparison of RelyX Unicem and Variolink II used to lute Ceramic Inlays.
Published by: C. Stanford et al.; University Iowa, USA
Aim of the study: In this clinical long-term study 95 inlays and onlays made of glass ceramic (Authentic, Microstar, Atlanta,
USA) were cemented with RelyX™ Unicem cement and a total-etch-system (Syntac®, Variolink® II, Ivoclar Vivadent)
and clinically evaluated after 36 months.
Results: When comparing the two adhesive cements for ceramic inlays/onlays at vital posterior teeth, no differences were
observed in the clinical result after 3 years.
Observation period: 36 months
Read the full study (PDF, 367KB)
Restorations from full ceramic, veneer metal ceramic and metal after 2 years in-vivo
Title: Two-year Performance of Restorations Placed with a Self-adhesive Luting Material
Published by: R.J. Crisp, F.J.T. Burke, University of Birmingham, United Kingdom.
Published in: IADR 2006, Brisbane #2098
Complete Abstract: 3M ESPE Scientific Facts, June 2006.
Aim of the study: This in-vivo study evaluates the clinical results when carrying out cementations of full ceramics, PFM and full
metal restorations with RelyX Unicem cement.
Results: After an average observation period of 21 months the result achieved with RelyX Unicem cement was rated
very satisfactorily. No failures were reported.
Read the full study (PDF, 367KB)
Full ceramic bridges after 18 months in-vivo
Title: Clinical Longevity of CAD/CAM Generated Y-TZP Posterior Fixed Partial Dentures
Published by: J.A. Sorensen, R. Lusch, and Yokoyama, Pacific Dental Institute, Portland, OR, USA
Published in: AADR 2006, Florida #0270
Complete Abstract: 3M ESPE Scientific Facts, March 2006
Aim of the study: In the present study the clinical success rate of RelyX™ Unicem cement with three- and four-unit bridges made of
Lava™ zirconium oxide has been examined.
Results: After a mean service time of 18 months all Lava bridges available for follow-up examinations functioned well.
RelyX Unicem cement showed reliable performance: marginal discolorations and debondings did not occur. Thus, RelyX Unicem cement achieves good clinical results and a good in-vivo long-term stability.
Observation period: 18 months
Lava™ restorations available for follow-up examination: 52
Debondings: 0%
Allocation of the bridge restorations in %*
Three-unit bridges 73%
Four-unit bridges 27%
Upper jaw 54%
Lower jaw 46%
* The majority of FPDs replaced the first molar
Post cementations after 36 months in-vivo
Title: FRC vs. Titanium Posts – Preliminary Results of a RCT
Published by: M. Naumann1, G. Sterzenbach2 and K.-P. Lange2
1 Humboldt-University, Charite Berlin, Germany, 2 Humboldt-University, Berlin, Germany
Published in: IADR 2006, Brisbane #0077
Complete Abstract: 3M ESPE Scientific Facts, June 2006
Aim of the study: The present study examines the clinical behavior of RelyX™ Unicem cement when cementing endodontic
posts. Titanium posts as well as glass fiber posts were tested.
Results: After an observation period of 12 to 36 months no post restorations were lost with both, the glass fiber as well as
the titanium posts. Thus, RelyX Unicem cement is very suitable for the cementation of endodontic posts.
Average observation period: 20 months
Number of post restorations: 91
Thereof titanium posts: 51%
Thereof glass-fiber posts: 49%
Losses total: 0%
Pulp compatibility after 60 days
Title: Human pulp response to resin cements used to bond inlay restorations
Published by: C. A. de S. Costa1, J. Hebling2, R. C. Randall2
1 University Sao Paulo State-UNESP, Sao Paulo, Brasil, 2 3M ESPE, St. Paul, USA
Published in: Journal of dental materials, No. 22, 954–962
Aim of the study: In this clinical study the pulp compatibility after inlay cementation with RelyX™ Unicem cement and a total-etchsystem
(Syntac®, Variolink® II, Ivoclar Vivadent) has been examined.
Results: During the histological examination 60 days after cementation with RelyX Unicem cement the area around the pulp
showed a normal histology. However, with the cementation with the total-etch-system a small inflammatory
reaction was discovered. This may cause a post-operative sensitivity.
Observation period: 60 days
Number of restorations: 24
Average patient age: 14 years
Read the full study (PDF, 367KB)
Replacement of an insufficient PFM crown by a Lava™ Zirconia Crown
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