Microtensile Bond Strength of a Resin Cement to Silica-Based and Y-TZP Ceramics Using Different Surface Treatments

被引:30
作者
Keshvad, Alireza [1 ]
Hakimaneh, Seyed Mohammad Reza [1 ]
机构
[1] Shahed Univ, Dept Prosthodont, Fac Dent, Italia St, Tehran 14177, Iran
来源
JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY | 2018年 / 27卷 / 01期
关键词
Lithium disilicate ceramic; Nd:YAG laser; surface treatment; zirconia ceramic; LASER IRRADIATION; COMPOSITE; PORCELAIN; DURABILITY; ADHESION;
D O I
10.1111/jopr.12622
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Purpose: To evaluate the effects of different surface treatments on the microtensile bond strength (mu TBS) of bonding between resin cement and lithia or zirconia-based ceramics using an in vitro study. Materials and Methods: Three zirconia ceramic blocks (IPS e.max ZirCAD) and three lithium disilicate ceramic blocks (IPS e.max CAD) were sintered and duplicated in resin composite. The zirconia specimens underwent various treatments (n = 1): (i) Sandblast + primer (ZiSa); (ii) sandblast + laser irradiation + primer (ZiSaLa); or (iii) laser irradiation + primer (ZiLa). The lithium disilicate specimens also underwent various treatments: (i) sandblast + HF+ silane (LiSaE); (ii) sandblast + silane (LiSa); or (iii) sandblast + laser irradiation + silane (LiSaLa). The ceramic-composite blocks were cemented with resin cement and cut to produce bars with approx. 1 mm(2) bonding areas. The specimens were thermocycled, and bond strength tests were performed in a universal testing machine. The fracture type was determined by observing the fractured surface under a stereomicroscope. The mean bond strengths of the specimens were statistically analyzed using one-way ANOVA and Duncan's tests (alpha = 0.05). Results: Mean comparison of the mu TBS showed no significant difference between LiSaE and LiSa (p > 0.05), but significant differences between LiSaE and other groups (p <= 0.01). No significant differences were found between the ZiSaLa and ZiSa groups (p > 0.05). The modes of failure in all groups were mostly adhesive (57% to 80%). The mean bond strengths in laser-irradiated ceramics were significantly lower than those from other surface treatments. All ZiLa specimens debonded before testing (pretest failure). Conclusions: Lithium disilicate ceramic surface treated with a combination of sandblasting and silane application provided a bond strength comparable to that provided by sandblasting in combination with acid etching and applying silane. Groups treated with laser irradiation had significantly lower bond strengths than other groups.
引用
收藏
页码:67 / 74
页数:8
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