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Volume 31 , Issue 5
September/October 2011
Pages 563 (e64–e70)

Effect of Physical and Physicochemical Surface Treatment Methods on the Tensile Strength of CAD/CAM-Fabricated Zirconia Posts and Cores Luted to Root Canals

Cumhur Sipahi, DDS, PhD/Fulya Toksoy, DDS, PhD/Simel Ayyıldız, DDS, PhD/Mutlu Özcan, Dr Med Dent, PhD

PMID: 21845239
DOI: 10.11607/prd.00.1013

This study investigated the effect of surface treatments on the retentive strength of zirconia posts and cores to root canals. Maxillary central incisors (n = 40) were treated endodontically, obturated, and post spaces were prepared. Zirconia posts and cores (n = 40) were obtained and assigned randomly to four groups (n = 10 per group; control, sandblasting, tribochemical silica coating, and tribochemical silica coating + silanization). Posts were cemented adhesively, and tensile force was applied. All treatment methods increased the tensile strength of zirconia posts and cores compared to the control group (P = .034). No significant difference was found between treatment methods. Failure types varied depending on the surface treatment method. (Int J Periodontics Restorative Dent 2011;31:e64–e70.)

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