Effects of different luting agents on bond strengths of fiber-reinforced composite posts to root canal dentin.
OBJECTIVE
To evaluate the bond strength between two fiber posts (FRC Postec and DT Light Post) and different composite resins following different surface treatments of the posts.


METHODS
One hundred sixty extracted teeth were divided into sixteen groups (n = 10). After pretreatment of the post surface with (1) no treatment, (2) silanization, (3) sandblasting + silanization or (4) tribochemical coating, the posts were either luted with the resin cements provided by the manufacturers of the post system or with a core buildup material. Push-out tests were performed in a universal testing machine until the post segment was dislodged from the root section. Data were analyzed using ANOVA. Multiple comparisons were performed using Tukey's test.


RESULTS
FRC Postec achieved significantly higher bond strengths than DT Light Post (p < 0.0001). Cementation with the core buildup material showed significantly higher bond strengths than the resin cement provided by the post manufacturers (p < 0.0001).


CONCLUSIONS
Post type, type of surface treatment and type of resin cement were significant factors for bond strength. Luting with a core buildup material significantly increased the bond strengths.
Rödig
Tina
T
Department of Operative Dentistry, Preventive Dentistry and Periodontology, Georg August University, Göttingen, Germany. troedig@med.uni-goettingen.de
Nusime
Anne Kathrin
AK
Konietschke
Frank
F
Attin
Thomas
T
D000134:Acid Etching, Dental; D000537:Aluminum Oxide / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D002484:Cementation / Q000379:methods; D003188:Composite Resins / Q000737:chemistry*; D003738:Dental Cements / Q000737:chemistry; D045662:Dental Etching / Q000379:methods; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D003786:Dental Pulp Cavity / Q000648:ultrastructure*; D003799:Dental Stress Analysis / Q000295:instrumentation; D003804:Dentin / Q000648:ultrastructure*; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D005898:Glass / Q000737:chemistry; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011176:Post and Core Technique / Q000295:instrumentation*; D011791:Quartz / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D055116:Self-Curing of Dental Resins; D012821:Silanes / Q000737:chemistry; D013314:Stress, Mechanical
C112274:Clearfil Liner Bond 2; D003188:Composite Resins; D003738:Dental Cements; D003764:Dental Materials; D017220:Dentin-Bonding Agents; C448319:ESPE bonding system; C420130:Excite cement; C483522:LuxaCore; D008689:Methacrylates; C076808:Monobond S; D011109:Polymethacrylic Acids; C425843:Prime and Bond NT; D019279:Resin Cements; D012821:Silanes; C009753:fiberglass; D011791:Quartz; C103502:Variolink; D017438:Bisphenol A-Glycidyl Methacrylate; C081713:Visio-Bond; D000537:Aluminum Oxide