Combined application of femtosecond laser and air‐abrasion protocols to monolithic zirconia at different sintering stages: Effects on surface roughness and resin bond strength

Okutan, Yener; Kandemir, Banucicek; Gündoğdu, Yasemin; Kılıç, Hamdi Şükür; Yucel, Munir Tolga

doi:10.1002/jbm.b.34741

Cited by 14 publications

(30 citation statements)

References 50 publications

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“…Akın et al reported that CO2 laser irradiation of zirconia might be an ineffective method for improving the bond strength of resin cement to zirconia 19) . Er:YAG and Nd:YAG laser treatments have been proposed to improve the bond strength to zirconia 19,22) . In this study, the bond strength data proved that ytterbium fiber laser irradiation was more efficient at increasing the bond strength of resin cements to zirconia.…”

Section: Discussionmentioning

confidence: 99%

“…Recent studies have examined laser surface treatment to improve the surface modification of titanium and zirconia implant bodies 12,13) . Laser treatment can cause various changes in material surfaces, including creating proper surface roughness to increase the bonding of resin cements to zirconia, which is difficult to manufacture with high hardness [18][19][20][21][22][23][24] . It has been also recognized that ytterbium laser treatment on zirconia surfaces enhances the bond strength between zirconia and resin cements 23) .…”

Section: Introductionmentioning

confidence: 99%

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Effects of ytterbium laser surface treatment on the bonding of two resin cements to zirconia

et al. 2022

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Monolithic zirconia crowns bonded to zirconia abutments have become more commonly used in the construction of cement-retained implant superstructures. The present study aimed to examine the effects of laser surface treatments on the bond strength of two resin cements to zirconia. Three types of surfaces were examined: untreated, alumina blasted, and ytterbium laser treated; and two types of resin cements: 4-META/MMA-TBB resin cement and composite resin cement. Half of the specimens were subjected to a thermocycling process. Subsequently, a shear bond test was carried out. In addition, surface roughness was measured for each surface type. The results showed that laser treatment increased zirconia surface roughness and that laser treatment significantly increased shear bond strength after the thermocycling of both cement types compared to no treatment. Our experimental results suggested that ytterbium laser surface treatment of zirconia increased the bond strength of resin cements.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of ytterbium laser surface treatment on the bonding of two resin cements to zirconia

et al. 2022

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“…7,8 A proportionally larger area has a high surface energy, which can improve mechanical bonding to the zirconia surface. 9,18 Airborne particle abrasion has gained popularity with regard to obtaining roughness on the zirconia surface, 23 but conflicting results were reported in some related studies. 8,24,25 In many studies applying surface treatment, where SBS and surface roughness were evaluated, there was no correlation between the SBS values and the surface roughness values.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of the shear bond strength of zirconia to a self-adhesive resin cement after different surface treatment

Akar¹,

Dündar²,

Kırmalı³

et al. 2021

Dent. Med. Probl.

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Background. Bond stability between zirconia and a self-adhesive resin cement is a major concern, and only limited evidence about its longevity is currently available. Moreover, no study has yet comprehensively evaluated the influence of different power levels of the neodymium-doped yttrium-aluminum-garnet (Nd:YAG) laser irradiation on the shear bond strength (SBS) of zirconia to a self-adhesive resin cement.Objectives. The aim of this study was to evaluate the SBS of pre-sintered and sintered zirconia to a selfadhesive resin cement after various treatment (air abrasion and the Nd:YAG laser irradiation at varying power levels -1 W, 2 W and 3 W).Material and methods. Ninety-nine zirconia specimens were prepared and divided into 3 groups: control (with no surface treatment); and pre-sintered and sintered groups with surface treatment. Surface treatment was applied before sintering in the pre-sintered group and after sintering in the sintered group. After following all protocols, a resin cement was layered on the zirconia surface. Shear bond strength was measured using a universal testing machine. The results were subjected to the statistical analysis. The surface topography and phase transformation of zirconia were evaluated using the atomic force microscopy (AFM), scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses after surface treatment.Results. The laser irradiation (3 W, 1 W and 2 W) of the pre-sintered zirconia surface resulted in the highest SBS values (p < 0.001), while the lowest SBS values were obtained with airborne particle abrasion of the pre-sintered and sintered zirconia surfaces. Conclusions.Laser irradiation increased the SBS of pre-sintered zirconia to a resin cement. Surface treatment with air abrasion had a lesser effect on the SBS values.

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“…In our study, the translucent zirconia surface obtained following the FSL treatment presented uniform irregular structures without groove-like structures or pits, as confirmed in the SEM image shown in Figure 2e. Surface topography can be modified by femtosecond laser surface treatment and surface roughness of the zirconia can be increased; thus, the bond strength can be improved [31].…”

Section: Discussionmentioning

confidence: 99%

Changes in Crystal Phase, Morphology, and Flexural Strength of As-Sintered Translucent Monolithic Zirconia Ceramic Modified by Femtosecond Laser

Liang

Yuan

2021

Applied Sciences

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Conventional bonding technology suitable for silica-based ceramics is not applicable to zirconia, due to its polycrystalline phase composition, chemical stability, and acid corrosion resistance. The development of an effective treatment to improve its surface roughness and mechanical properties remains an unresolved problem. Therefore, to solve this problem, this in vitro study evaluated the changes in surface morphology and flexural strength of translucent monolithic zirconia surfaces treated with femtosecond laser technology. As-sintered translucent zirconia specimens were subjected to airborne particle abrasion and femtosecond laser treatments, while control group specimens received no treatment. After treatment, the roughness and morphology of the treated zirconia surfaces were examined. The flexural strength and X-ray diffraction of the treated specimens were measured and analyzed. Statistical inferential analysis included one-way analysis of variance at a set significance level of 5%. The surface roughness after femtosecond laser treatment was significantly improved when compared with the control group and the group that received the airborne particle abrasion treatment (p < 0.05). In comparison with the airborne particle abrasion group, the flexural strength of the group that received the femtosecond laser treatment was significantly improved (p < 0.05). The femtosecond laser approach using appropriate parameters enhanced the roughness of the zirconia without reducing its flexural strength; therefore, this approach offers potential for the treatment of zirconia surfaces.

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Combined application of femtosecond laser and air‐abrasion protocols to monolithic zirconia at different sintering stages: Effects on surface roughness and resin bond strength

Cited by 14 publications

References 50 publications

Effects of ytterbium laser surface treatment on the bonding of two resin cements to zirconia

Effects of ytterbium laser surface treatment on the bonding of two resin cements to zirconia

Evaluation of the shear bond strength of zirconia to a self-adhesive resin cement after different surface treatment

Changes in Crystal Phase, Morphology, and Flexural Strength of As-Sintered Translucent Monolithic Zirconia Ceramic Modified by Femtosecond Laser

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