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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of Particle and Air-Abrasion Moment on Y-TZP Surface Characterization and Bond Strength

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Author(s):
Martins, Samira Branco [1] ; Abi-Rached, Filipe de Oliveira [1] ; Adabo, Gelson Luis [1] ; Baldissara, Paolo [2] ; Fonseca, Renata Garcia [1]
Total Authors: 5
Affiliation:
[1] Univ Estadual Paulista, Araraquara Dent Sch, Dept Dent Mat & Prosthodont, Sao Paulo - Brazil
[2] Alma Mater Studiorum Univ Bologna, Dept Oral Sci, Bologna - Italy
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY; v. 28, n. 1, p. E271-E278, JAN 2019.
Web of Science Citations: 1
Abstract

Purpose To evaluate the influence of particle and air-abrasion on the surface characterization and shear bond strength (SBS) of a Y-TZP ceramic with a resin cement. Materials and Methods Y-TZP specimens were air-abraded with 50 mu m alumina particles; 120 mu m alumina particles; 30 mu m silica-coated alumina particles (Rocatec Soft); 110 mu m silica-coated alumina particles (Rocatec Plus). Air-abrasion was performed before (BS); after (AS); before and after (BAS) zirconia sintering. Surface characterization included roughness (n = 10), wettability (n = 10), morphology (n = 2), and elemental composition (n = 2). For SBS (n = 11), composite resin discs were bonded to the air-abraded and silane-treated zirconia surface, with the resin cement RelyX ARC. Failure mode was determined. Roughness, wettability, and SBS data were analyzed by two-way ANOVA with pairwise interaction and Tukey's test (alpha = 0.05). Results Air-abrasion performed with coarser particles at BS and BAS moments provided the highest roughness values, while the lowest roughness values were observed with particles combined with AS moment (p < 0.01). Rocatec Plus provided lower contact angle than the 120 mu m alumina particles (p = 0.013), and BAS exhibited lower contact angle than BS (p = 0.002). The combinations 120 mu m/BS and the silica-coated alumina particles/AS and /BAS showed the highest SBS (p < 0.05). The combination of each particle/BAS was statistically similar to the same particle/AS. Failure mode was 100% adhesive for all groups. The interaction particle size/air-abrasion moment determined the morphological pattern. Silicon was observed only in the Rocatec groups. Conclusions Roughness was influenced by the particle size and was higher when the zirconia was air-abraded in its green stage. The particle composition played an important role in the wettability and both studied air-abrasion moments provided similar wettability than the one in which air-abrasion is usually performed. The highest SBS values were observed in the three moments, by using certain particles for each moment. (AU)

FAPESP's process: 12/08534-1 - Evaluation of the influence of particle size and air-abrasion moment on surface characterization (composition, morphology, wettability and roughness) of zirconia and on bond strength with resin cement
Grantee:Samira Branco Martins
Support Opportunities: Scholarships in Brazil - Master