Abstract:PURPOSEPlasma activation of hydrophobic zirconia surfaces might be suitable to improve the bond strength of luting materials. The aim of this study was to analyze the influence of nonthermal argon-plasma on the shear bond strength (SBS) between zirconia and different combinations of 10-MDP adhesive systems and luting composites after artificial aging.MATERIALS AND METHODSTwo hundred forty Y-TZP specimens were ground automatically with 165 µm grit and water cooling. Half of the specimens received surface activa… Show more
“…Irrespective of the cement type, the SBS values of the NTP group were significantly lower in thermocycling than non-thermocycling. These results are consistent with previous reports of a significant decrease in SBS due to thermocycling after NTP treatment [23,25,38]. Therefore, the SBS after NTP treatment may be affected by thermal stress, the compositions of resin cement, and low resistance to hydrolysis of the van der Waals bond [39,40].…”
Section: Discussionsupporting
confidence: 92%
“…Some articles also have mentioned that this mechanical surface treatment can improve the bond strength between zirconia and various types of cement [29,30]. In contrast, several studies have shown that the microporosity created by sandblasting can act as a cracking agent to worsen the long-term stability of zirconia-based restorations [4,7,22,25]. Additionally, He et al [31] have also been mentioned that the remaining Al 2 O 3 particles after sandblasting could degrade the adhesion, requiring the cleaning of the surface.…”
Section: Discussionmentioning
confidence: 99%
“…These activated plasma species produce a reactive surface without significantly changing the bulk properties of the materials [22,23]. The plasma treatment has also been applied to the dental field and can be a suitable method for increasing zirconia adhesion [24,25]. Previous studies have compared the effects of sandblasting and non-thermal atmospheric pressure plasma (NTP) on shear bond strength (SBS) between Y-TZP and resin cement [26,27].…”
The purpose of this study was to evaluate the effect of non-thermal atmospheric pressure plasma (NTP) on shear bond strength (SBS) between yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) and self-adhesive resin cement. For this study, surface energy (SE) was calculated with cube-shaped Y-TZP specimens, and SBS was measured on disc-shaped Y-TZP specimens bonded with G-CEM LinkAce or RelyX U200 resin cylinder. The Y-TZP specimens were classified into four groups according to the surface treatment as follows: Control (no surface treatment), NTP, Sb (Sandblasting), and Sb + NTP. The results showed that the SE was significantly higher in the NTP group than in the Control group (p < 0.05). For the SBS test, in non-thermocycling, the NTP group of both self-adhesive resin cements showed significantly higher SBS than the Control group (p < 0.05). However, regardless of the cement type in thermocycling, there was no significant increase in the SBS between the Control and NTP groups. Comparing the two cements, regardless of thermocycling, the NTP group of G-CEM LinkAce showed significantly higher SBS than that of RelyX U200 (p < 0.05). Our study suggests that NTP increases the SE. Furthermore, NTP increases the initial SBS, which is higher when using G-CEM LinkAce than when using RelyX U200.
“…Irrespective of the cement type, the SBS values of the NTP group were significantly lower in thermocycling than non-thermocycling. These results are consistent with previous reports of a significant decrease in SBS due to thermocycling after NTP treatment [23,25,38]. Therefore, the SBS after NTP treatment may be affected by thermal stress, the compositions of resin cement, and low resistance to hydrolysis of the van der Waals bond [39,40].…”
Section: Discussionsupporting
confidence: 92%
“…Some articles also have mentioned that this mechanical surface treatment can improve the bond strength between zirconia and various types of cement [29,30]. In contrast, several studies have shown that the microporosity created by sandblasting can act as a cracking agent to worsen the long-term stability of zirconia-based restorations [4,7,22,25]. Additionally, He et al [31] have also been mentioned that the remaining Al 2 O 3 particles after sandblasting could degrade the adhesion, requiring the cleaning of the surface.…”
Section: Discussionmentioning
confidence: 99%
“…These activated plasma species produce a reactive surface without significantly changing the bulk properties of the materials [22,23]. The plasma treatment has also been applied to the dental field and can be a suitable method for increasing zirconia adhesion [24,25]. Previous studies have compared the effects of sandblasting and non-thermal atmospheric pressure plasma (NTP) on shear bond strength (SBS) between Y-TZP and resin cement [26,27].…”
The purpose of this study was to evaluate the effect of non-thermal atmospheric pressure plasma (NTP) on shear bond strength (SBS) between yttria-stabilized tetragonal zirconia polycrystal (Y-TZP) and self-adhesive resin cement. For this study, surface energy (SE) was calculated with cube-shaped Y-TZP specimens, and SBS was measured on disc-shaped Y-TZP specimens bonded with G-CEM LinkAce or RelyX U200 resin cylinder. The Y-TZP specimens were classified into four groups according to the surface treatment as follows: Control (no surface treatment), NTP, Sb (Sandblasting), and Sb + NTP. The results showed that the SE was significantly higher in the NTP group than in the Control group (p < 0.05). For the SBS test, in non-thermocycling, the NTP group of both self-adhesive resin cements showed significantly higher SBS than the Control group (p < 0.05). However, regardless of the cement type in thermocycling, there was no significant increase in the SBS between the Control and NTP groups. Comparing the two cements, regardless of thermocycling, the NTP group of G-CEM LinkAce showed significantly higher SBS than that of RelyX U200 (p < 0.05). Our study suggests that NTP increases the SE. Furthermore, NTP increases the initial SBS, which is higher when using G-CEM LinkAce than when using RelyX U200.
“…In addition, NTP generation equipment is not only inexpensive but also low in maintenance costs [ 31 ]. This NTP processing has been introduced to dentistry and may be an effective tool for increasing the RS of the zirconia crown [ 33 , 34 ].…”
Section: Introductionmentioning
confidence: 99%
“…Several articles have reported the effect of NTP on shear bond strength or microtensile bond strength between zirconia and resin cement [ 32 , 33 , 34 , 35 , 36 , 37 , 38 ]. However, there is currently no study on the RS between NTP-treated zirconia crown and titanium implant abutment through resin cement.…”
The aim of this study is to investigate the effect of non-thermal atmospheric pressure plasma (NTP) on retentive strength (RS) between the zirconia crown and the titanium implant abutment using self-adhesive resin cement. Surface free energy (SFE) was calculated on 24 cube-shaped zirconia blocks, and RS was measured on 120 zirconia crown-titanium abutment assemblies bonded with G-CEM LinkAce. The groups were categorized according to the zirconia surface treatment as follows: Control (no surface treatment), NTP, Si (Silane), NTP + Si, Pr (Z-Prime Plus), and NTP + Pr. Half of the RS test assemblies were aged by thermocycling for 5000 cycles at 5–55 °C. The SFE was calculated using the Owens-Wendt method, and the RS was measured using a universal testing machine at the maximum load until failure. One-way analysis of variance (ANOVA) with post-hoc Tukey honestly significant difference (HSD) was performed to evaluate the effect of surface treatments on the SFE and RS. Independent sample t-test was used to compare the RS according to thermocycling (p < 0.05). For the SFE analysis, the NTP group had a significantly higher SFE value than the Control group (p < 0.05). For the RS test, in non-thermocycling, the NTP group showed a significantly higher RS value than the Control group (p < 0.05). However, in thermocycling, there was no significant difference between the Control and NTP groups (p > 0.05). In non-thermocycling, comparing with the NTP + Si or NTP + Pr group, there was no significant difference from the Si or Pr group, respectively (p > 0.05). Conversely, in thermocycling, the NTP + Si and NTP + Pr group had significantly lower RS than the Si and Pr group, respectively (p < 0.05). These results suggest that NTP single treatment for the zirconia crown increases the initial RS but has little effect on the long-term RS. Applied with Silane or Z-Prime Plus, NTP pre-treatment has no positive effect on the RS.
Cold atmospheric pressure plasmas (CAP) is widely used for various therapeutic applications in health care. With the enormous progress in the understanding of plasma physics and development of plasma devices, the application of CAP is greatly promoted in dentistry. The reactive chemical species and electromagnetic radiation generated by CAP can activate and control various biochemical procedures. Therefore, CAP showed promising usage in surface modification of dental materials, biofilm removal, disinfection, endodontic therapy, periodontitis treatment, wound healing, and head and neck cancer control. Therefore, the objective of the present review is to present recently published studies on CAP in dentistry.
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