Bonding integrity and compressive strength of re-bonded, surface conditioned and Er Cr YSGG laser treated lithium disilicate ceramics

Albaker, Abdulaziz M.; Deeb, Laila Al; Alhenaki, Aasem M; Aldeeb, Modhi; Ahdal, Khold Al; Abduljabbar, Tariq; Vohra, Fahim

doi:10.1177/2280800020910954

Cited by 5 publications

(6 citation statements)

References 24 publications

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“…Many studies have shown that surface texture is a critical factor that affects the optical property and color perception of dental restoration. 18 19 20 The smooth surface plays an important role in diverting the light pathway that reflects at the same angle as it strikes the surface. This phenomenon is known as specular reflection.…”

Section: Discussionmentioning

confidence: 99%

Influence of toothbrush abrasion and surface treatments on the color and translucency of resin infiltrated hybrid ceramics

et al. 2021

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PURPOSE The study compared the color change, lightness, and translucency of hybrid resin ceramics exposed to toothbrush abrasion and surface treatment. MATERIALS AND METHODS Four hybrid ceramics [Lava Ultimate (LU), Vita Enamic (EN), Shofu HC (SH), and Crystal Ultra (CU)] were compared with a glass-ceramic (Vita Mark II) control. One hundred and twenty specimen blocks were prepared using a precision saw machine. Specimens in each material were divided into four subgroups based on the surface treatment (polishing or staining) and a storage medium (water or citric acid). Simulated tooth brushing with a mixture of 100 RDA (radioactive abrasives) with 0.3 ml distilled water was used for 3650 cycles (7300 strokes) for each specimen. Measurements for the color change, lightness, and translucency were measured after toothbrushing using a spectrophotometer. Statistical analysis compared outcomes using paired t-test, ANOVA, and Tukey post hoc test. RESULTS The maximum color change was identified in SH (stained acid) [1.44 (0.40)], whereas the lowest was identified in EN (polished water) [0.66 (0.16)] material. The maximum and minimum loss of surface translucency was observed in SH (polished water) [12.3 (0.52)] and EN (stained acid) [6.5 (0.55)] specimens, respectively. Lastly, loss of lightness was the highest in VM (polished acid) [69 (0.95)], whereas the lowest was observed in CU (stained water) [56.7 (0.86)]. CONCLUSION The comparison presented a significant effect of toothbrush abrasion on translucency and lightness of the hybrid resin ceramics. Color change was not significantly influenced irrespective of the storage medium employed. Surface staining demonstrated the preservation and stability of color and optical properties under the influence of toothbrush abrasion and chemical trauma.

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Section: Discussionmentioning

confidence: 99%

Influence of toothbrush abrasion and surface treatments on the color and translucency of resin infiltrated hybrid ceramics

et al. 2021

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“…The groups with the highest surface wettability also had the highest bond strength values (Sil + Er [14.11 ± 4.11 MPa] and Er [19.25 ± 3.7 MPa]). The Er:YAG laser acts on organic substrates by vaporizing its water content, which causes expansion and then microexplosions and tissue ablation 28,29 . Dental ceramics have a completely inorganic composition, which theoretically would hinder the action of the laser.…”

Section: Resultsmentioning

confidence: 99%

Surface etching and silane heating using Er:YAG and Nd:YAG lasers in dental ceramic luted to human dentin

Feitosa

Tribst

Araújo

et al. 2021

Int J Applied Ceramic Tech

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Investigate the tensile bond strength, surface morphology, and wettability of reinforced glass‐ceramic etched with high power laser at different protocols and luted to human dentin. Fifty carious‐free human molars were used in this study and distributed in five groups according to surface etching: (Control [HF10% + Silane]; Er [Er:YAG + Silane]; Sil + Er [Silane + Er:YAG]; Nd [Nd:YAG + Silane]; and Nd + Sil [Silane + Nd:YAG]). After, the tensile bond strength test was performed. Three specimens per group were used to perform the surface morphologies by using scanning electron microscopy analysis and wettability by using the sessile drop technique. Failure modes were determined. Data were analyzed with two‐way analysis of variance and Tukey tests, with α = .05. The bond strength data showed statistically significant differences among tested groups for the laser and silanization technique type (p < .001). The highest calculated bond strength values were obtained with Er (19.25 ± 3.70 MPa) followed by Sil + Er (14.11 ± 4.11 MPa), Control (9.42 ± 2.27 MPa), Nd (9.66 ± 2.02 MPa), and Nd + Sil (6.71 ± 1.88 MPa), respectively. The silane application prior to the laser irradiation showed an inferior bond strength compared to the conventional silanization technique. The surface etching using Er:YAG laser showed promissor results for the lithium disilicate.

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“…Repeated applications with low frequency, high power, and longer duration laser parameters are proposed to be more effective in enhancing the roughness and the bonding integrity of ceramic specimens since it is known that laser characteristics can precisely affect the outcome of Er,Cr:YSGG applications. The Er,Cr:YSGG laser ablates tissues using the principle of micro-explosion, resulting in microscopic and macroscopic irregularities (Albaker et al, 2020). In addition, it was found that the mean of surface roughness increased with both the power and duration of the laser treatment.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Lithium Disilicate Surface Morphology Treated with Er,Cr:YSGG and Fractional CO2 Laser

Noor Azad Mohammed*,

Zainab F. Al-Bawi,

Balsam saadi Abdulhameed

2023

IJL

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The use of indirect, all-ceramic restorations has grown in popularity among dentists. Studies have demonstrated that for indirect ceramic restorations to be effective over time, cement and ceramic must be bonded in a stable manner. Chemical, mechanical, and laser irradiation are among the methods used to precondition ceramic surfaces in order to increase bond strength.The objective of the study: This study was performed to investigate the roughness values and surface topography of lithium disilicate glass-ceramic treated with conventional methods and different Er,Cr:YSGG, and fractional CO2 laser conditioning parameters.Material and methods: Sixty samples of lithium disilicate glass-ceramic were divided as follows: 1- (n = 10) untreated; 2- (n = 10) Hydrofluoric acid etched; 3- (n = 10) conditioned by Er,Cr: YSGG laser at (7 W, 25 Hz, 50/50% Water/Air, pulse duration 60 us, irradiation time 2 min); 4- (n = 10) conditioned by Er,Cr:YSGG laser at (5 W, 25 Hz, 50/50% Water/Air, pulse duration 60 us, irradiation time 2 min); 5- (n = 10) conditioned by fractional CO2 laser at (power 8 W, pulse duration 10 ms); 6- (n = 10) conditioned by fractional CO2 laser at (power 6 W, pulse duration 10 ms). Then evaluated by: Profilometer, and scanning electron microscopy.Results: The highest roughness values were found in CO2 laser power 8 W treated samples, followed by Er,Cr:YSGG laser power 7W treated samples. The hydrofluoric acid-etched samples showed roughness values comparable to those of CO2 laser-irradiated samples with a power of 6 W. The untreated sample showed the smoothest surface with the lowest roughness value.Conclusion: The application of Er,Cr:YSGG, fractional CO2 lasers enhances the surface roughness of lithium disilicate samples positively, showing the promised results of using these parameters in bonding procedures.

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Bonding integrity and compressive strength of re-bonded, surface conditioned and Er Cr YSGG laser treated lithium disilicate ceramics

Cited by 5 publications

References 24 publications

Influence of toothbrush abrasion and surface treatments on the color and translucency of resin infiltrated hybrid ceramics

Influence of toothbrush abrasion and surface treatments on the color and translucency of resin infiltrated hybrid ceramics

Surface etching and silane heating using Er:YAG and Nd:YAG lasers in dental ceramic luted to human dentin

Evaluation of Lithium Disilicate Surface Morphology Treated with Er,Cr:YSGG and Fractional CO2 Laser

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