Effect of non-thermal plasma treatment and resin cements on the bond strength of zirconia ceramics with different yttria concentrations

Author:

Ozturk Deniz1,Sen Nazmiye23ORCID,Isler Sabire2

Affiliation:

1. Department of Prosthodontics, Health Science Institute , University of Istanbul , Istanbul , Türkiye

2. Department of Prosthodontics, Faculty of Dentistry , University of Istanbul , Istanbul , Türkiye

3. Department of Prosthodontics, Faculty of Dentistry , Kent University , Istanbul , Türkiye

Abstract

Abstract Objectives To investigate the effect of different surface treatments and resin cements on the shear bond strength of zirconia ceramics with different yttria concentrations. Methods Zirconia blocks characterized by different yttria concentrations [Vita YZ HT (HT), Vita YZ ST (ST) and Vita YZ XT (XT)] were used to prepare disc-shaped specimens (n=252). Specimens prepared to investigate shear bond strength (SBS), water contact angle and surface roughness (Ra) were divided into four subgroups; control (C), sandblasting (S), sandblasting + nonthermal plasma treatment (SNTP) and nonthermal plasma treatment (NTP). For SBS testing, specimens were further divided into two groups (n=108) according to the luting cement used [Panavia F2.0 (P) and Rely X U200 (R)]. The water contact angles were determined by sessile drop technique and Ra was analyzed with optical profilometer. SBS tests were performed in a universal testing machine at a crosshead speed of 0.5 mm/min. The data sets were statistically analyzed with two and three-way ANOVAs followed by post-hoc comparisons (α=0.05). Results The water contact angle and Ra data were significantly affected by surface treatments. The mean Ra values of ST and XT were significantly lower than HT for the surface treatment groups of C and NTP. The SBS values were significantly different among the groups subjected to different surface treatments. The mean SBS values of surface treatment groups (S, SNTP and NTP) when cemented with R were significantly higher than the groups of C (p<0.05). Conclusions For the tested zirconia ceramics with different yttria concentrations, non-thermal plasma activation helps to improve SBS and is a promising tool in practical use.

Funder

Bilimsel Araştirma Projeleri Birimi, Istanbul Üniversitesi

Publisher

Walter de Gruyter GmbH

Subject

Biomedical Engineering

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