The effect of surface treatment with a fractional carbon dioxide laser on shear bond strength of resin cement to a lithium disilicate-based ceramic

Ahrari, Farzaneh; Boruziniat, Alireza; Mohammadipour, Hamideh Sadat; Alirezaei, Mehrnoosh

doi:10.4103/1735-3327.208762

Cited by 16 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the present study, CO 2 laser was used to modify the surface morphology and enhance the composite adhesion onto porcelain surface, so the null hypothesis was rejected. FTIR spectra indicated good interaction and response between fractional CO 2 laser and porcelain material, in agreement with previous studies [23,24]. The surface roughness of the laser group was homogenous, shallow, and evenly distributed with no signs of carbonization or cracks.…”

Section: Discussionsupporting

confidence: 90%

Role of CO2 Laser on SBS between Dental Porcelain and Composite Resin Repair Process

Hassan

Hussein

Mohammed³

2023

International Journal of Dentistry

View full text Add to dashboard Cite

Background. The surface modification of porcelain material can be conducted by mechanical, chemical, or laser means. This study investigated the CO2 laser effect on porcelain to enhance bonding with composite resin. Materials and methods. A total of 33 blocks of feldspathic porcelain were randomly divided into 3 groups of 10. Additionally, three specimens were used in scanning electronic microscopy and energy-dispersive spectroscopy tests. Group I was treated with 9.5% hydrofluoric acid (HF), Group II with a 5 W CO2 laser, and Group III with CO2 followed by etching with 9.5% HF. Then, a Bisco intraoral repair kit was used, followed by the application of repair composite resin (Tetric N Ceram) on the porcelain surface using a Teflon mold and light-curing source. Shear bond strength (SBS) was assessed by using a digital universal testing machine, and failure modes were evaluated. Data were analyzed by analysis of variance (ANOVA) and least significant difference test. Results. A high significant difference in roughness and SBS was found amongst the tested groups P < 0.001 . SBS and roughness for Group III were significant at P < 0.05 , and the lowest value was observed in Group II. The cohesive mode of failure was dominant in Groups I and III, whereas adhesive failure was dominant in Group II. Conclusion. The surface treatment of porcelain with CO2 laser followed by HF application can enhance roughness and SBS, and can be recommended when extra retention during repair indication.

show abstract

Section: Discussionsupporting

confidence: 90%

Role of CO2 Laser on SBS between Dental Porcelain and Composite Resin Repair Process

Hassan

Hussein

Mohammed³

2023

International Journal of Dentistry

View full text Add to dashboard Cite

show abstract

“…25 This result is in agreement with that of a study by Ahrari et al who concluded that laser surface treatment on zirconia significantly increased SBS because of surface roughness. 10 However, the result disagrees with Kirmali et al; they proposed that Nd;YAG lasers are not effective to in increasing the bond strength between zirconia and porcelain. This could be due to the fact that the authors in the study used different laser energy and different pulse duration.…”

Section: Discussionmentioning

confidence: 84%

“…9 Previous studies have employed different lasers such as CO2, Nd;YAG and Er;YAG for the surface treatment of zirconia and reported varying degrees of success. 10 Soltaninejad et al concluded that the surface treatment with Nd:YAG laser resulted in increased share bond strength and surface roughness. 11 while Liu et al found that Nd:YAG laser cannot improve the surface roughness of zirconia.…”

Section: Introductionmentioning

confidence: 99%

Effects of Different Laser Treatments on Some Properties of the Zirconia-Porcelain Interface

2021

View full text Add to dashboard Cite

Introduction: This study was performed to compare the effect of Fractional CO2 laser or Q switched Nd:YAG laser of surface treatment on the shear bond strength of zirconia-porcelain interface. Methods: Fractional CO2 laser at 30 W, 2 ms, time interval 1 ms, distance between spots 0.3 mm, and number of scans is (4) or Q switched Nd:YAG laser at 30 J/mm2 and 10 Hz were used to assess the shear bond strength of zirconia to porcelain. Pre-sintered zirconia specimens were divided into three groups (n = 10) according to the surface treatment technique used: (a) untreated (Control) group; (b) CO2 group; (c) Nd:YAG group. All samples were then sintered and veneered with porcelain according to the manufacturer’s instructions. Surface morphology was examined using a light microscope, the surface roughness test was done by the atomic force microscope (AFM), and the shear bond strength (SBS) test was done by a universal testing machine. After debonding following shear bond test, zirconia surfaces were examined under a light microscope to determine their fracture mode. Results: The Results of this study showed that the lowest SBS was recorded in the control group, and the highest SBS recorded in the Fractional CO2 group, followed by the Q switched Nd:YAG laser group, as well as an increase in surface roughness and change in the morphology and mode of failure in the experimental groups . Conclusion: This study shows that Fractional CO2 laser and Q switched Nd:YAG laser treatments significantly increase the bond strength than untreated zirconia .

show abstract

“…The fractional CO2 laser can increase micromechanical retention and bond strength by roughening the surface via the process of thermomechanical ablation. The use of fractional CO2 lasers is associated with other benefits, such as the fact that the emission wavelength of the CO2 laser is almost completely absorbed by ceramics, it is ideally adapted for ceramic surface treatment and scanning the surface by the laser apparatus itself would result in a more homogeneous etching pattern on the ceramic specimen (Ahrari et al, 2017). More research is needed to confirm this assumption.…”

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

View full text Add to dashboard Cite

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.

show abstract

The effect of surface treatment with a fractional carbon dioxide laser on shear bond strength of resin cement to a lithium disilicate-based ceramic

Cited by 16 publications

References 33 publications

Role of CO2 Laser on SBS between Dental Porcelain and Composite Resin Repair Process

Role of CO2 Laser on SBS between Dental Porcelain and Composite Resin Repair Process

Effects of Different Laser Treatments on Some Properties of the Zirconia-Porcelain Interface

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

Contact Info

Product

Resources

About