# 151634
Clinical comparison of Glass Fiber with Zirconium oxide posts Christian Mesmer¹, Fabian Huettig, Martin Groten, Jürgen Geis-Gerstorfer Department of Prosthodontics and Section Medical Materials & Technology Dental Clinic University of Tübingen
Introduction: In recent years, glass fiber-reinforced root posts and zirconium oxide posts have become very popular for reinforcement and rebuilding of endodontically treated and partially destructed abutment teeth by using resin-based direct build-up techniques before crowning. The material advantage of both post systems is public, but still little is known about the comparison between Fiber and Zirconia based post systems when it comes to their clinical long-term performance.
Objective: This clinical investigation evaluated the clinical comparison of glass fiber reinforced root posts with zirconia (ZrO2) reinforced root posts in endodontically treated prosthodontic abutment teeth. Figure 1: Tested system: Rebilda, Voco; compared systems & Cosmopost, Ivoclar Vivadent.
Methods: 42 abutment teeth (15 anterior/27 posterior) in 11 patients (6 male/ 5 female) were reinforced with posts for later prosthodontic treatment. 28 received a single crown and 14 were retainers for fixed-partial-dentures (FPD). Glass fiber-reinforced post luted with resin luting agent (Rebilda Post, n=22), and resin luted ZrO2 post (Cosmopost/ FlexiFlow, n=20) were assigned by random in patients receiving more than one post. Follow-up examination consisted of a complete dental status as well as a quality assessment of the post-supported restorations including 6 periodontal probings per teeth. Variables of interest were pain on percussion, increased probing depths or fracture of tooth / restauration. Figure 2: Glas Fiber system working steps : Rebilda Post , Voco,Germany.
Figure 3: Zirconium oxide system working steps : Cosmopost, Ivoclar Vivadent,Germany. Post placement for tooth reinforcement
Post placement with reconstruction of lost tooth structure
Figure 4: rebuilt teeth(a), distribution of observation time (b), dark parts represent anterior teeth. Jaw region
ante
post
b
c
d
e
f
g
h
30%
27
15
a
a
0
6
12
18
24
Time to event
30
Results: The median observation time of all 11 patients was 15 months (range: 5 to 32). 25 posts (64%) were observed for more 36 than 14 months. No adverse events occurred. All post-reinforced b teeth and supported restorations were free from complication.
Conclusion: Both post-system yielded promising first results as reinforcement of endodontically treated abutment teeth supporting crowns and 3-unit FPDs in standard situations. The glass fiber reinforced root posts, in comparison with zirconia (ZrO2) reinforced root post-systems may offer a clinical alternative to conservative esthetic quality post reconstruction techniques. Acknowledgements: This study was supported by „ VOCO, (Cuxhafen, Germany)“ CED-IADR 31.08-03.09. 2011 Budapest
Dr. med. dent. Christian Mesmer
[email protected]
