Effect of Er:YAG laser and EDTAC on the adhesiveness to dentine of different sealers containing calcium hydroxide

• Published in: International endodontic journal 2003-07, Vol.36 (7), p.472-475
• Main Authors: Picoli, F., Brugnera-Junior, A., Saquy, P. C., Guerisoli, D. M. Z., Pecora, J. D.
• Format: Article
• Language: English
• Subjects: Adhesiveness; Aluminum Silicates; Analysis of Variance; Bismuth - chemistry; Calcium Hydroxide - chemistry; Chelating Agents - pharmacology; Dental Bonding; Dentin - drug effects; Dentin - radiation effects; Dentin - ultrastructure; Dentistry; Edetic Acid - analogs & derivatives; Edetic Acid - pharmacology; endodontics; Er:YAG laser; Erbium; Humans; Lasers; Materials Testing; Root Canal Filling Materials - chemistry; root canal sealers; Salicylates - chemistry; Stress, Mechanical; Surface Properties; Yttrium; Zinc Oxide - chemistry
• ISSN: 0143-2885; 1365-2591
• DOI: 10.1046/j.1365-2591.2003.00660.x

Aim  To evaluate the effect of 15% EDTAC solution and Er:YAG laser irradiation on the adhesiveness to dentine of root canal sealers containing calcium hydroxide. Methodology  The crowns of 60 maxillary human molars were ground until dentine was exposed. The teeth were divided into three groups of 20 teeth: group I, the dentine surface received no treatment; group II, 15% EDTAC solution was applied to the dentine; group III, the dentine received Er:YAG laser application (11 mm focal distance with perpendicular incidence to dentine surface; 4 Hz frequency; 200 mJ energy; 2.25 W potency; 62 J total energy; 1 min application time). Aluminium cylinders filled with the sealers, Sealer 26, Apexit, Sealapex and CRCS, were then applied to the treated surfaces. Adhesiveness was measured with a universal testing machine, with traction results given in MegaPascals (MPa). These results were submitted to anova tests. Results  Statistical analysis showed significant differences (P