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Zakavi, Faramarz, Gholizadeh, Sarah, Dibazar, Sana, Esmaeili, Mehdi. (1401). A Comparison of Laser and Mechanical Surface Pretreatment Methods on Shear Bond Strength of Resin Composite to Resin-Modified Glass Ionomer. سامانه مدیریت نشریات علمی, 24(Supplement-March-2023), 103-111. doi: 10.30476/dentjods.2022.92281.1624
Faramarz Zakavi; Sarah Gholizadeh; Sana Dibazar; Mehdi Esmaeili. "A Comparison of Laser and Mechanical Surface Pretreatment Methods on Shear Bond Strength of Resin Composite to Resin-Modified Glass Ionomer". سامانه مدیریت نشریات علمی, 24, Supplement-March-2023, 1401, 103-111. doi: 10.30476/dentjods.2022.92281.1624
Zakavi, Faramarz, Gholizadeh, Sarah, Dibazar, Sana, Esmaeili, Mehdi. (1401). 'A Comparison of Laser and Mechanical Surface Pretreatment Methods on Shear Bond Strength of Resin Composite to Resin-Modified Glass Ionomer', سامانه مدیریت نشریات علمی, 24(Supplement-March-2023), pp. 103-111. doi: 10.30476/dentjods.2022.92281.1624
Zakavi, Faramarz, Gholizadeh, Sarah, Dibazar, Sana, Esmaeili, Mehdi. A Comparison of Laser and Mechanical Surface Pretreatment Methods on Shear Bond Strength of Resin Composite to Resin-Modified Glass Ionomer. سامانه مدیریت نشریات علمی, 1401; 24(Supplement-March-2023): 103-111. doi: 10.30476/dentjods.2022.92281.1624

A Comparison of Laser and Mechanical Surface Pretreatment Methods on Shear Bond Strength of Resin Composite to Resin-Modified Glass Ionomer

Journal of Dentistry
مقاله 4، دوره 24، Supplement-March-2023 - شماره پیاپی 1، خرداد 2023، صفحه 103-111    اصل مقاله (1.04 M)
نوع مقاله: Original Article
شناسه دیجیتال (DOI): 10.30476/dentjods.2022.92281.1624
نویسندگان
Faramarz Zakavi1؛ Sarah Gholizadeh1؛ Sana Dibazar* 2؛ Mehdi Esmaeili3
1Dept. of Operative and Esthetic Dentistry, Dental Faculty, Ahvaz Jundishapur Medical Science University, Ahvaz, Iran.
2Dept. of Operative and Esthetic Dentistry, Dental Faculty, Tabriz University of Medical Science, Tabriz, Iran.
3Dept. of Orthodontics Dentistry, Dental Faculty, Tabriz Azad University of Medical Science, Tabriz, Iran.
چکیده
Statement of the Problem: Dentin margins have a higher microleakage than enamel in composite restorations due to weaker bond durability. Clinically, most margins are located apical to cementoenamel junction on the dentin or cementum. Different surface preparation methods may have dissimilar effects on the shear bond strength of resin-modified glass ionomer (RMGI) to composite resin, regarding the layering technique employed in restoration of these cavities.
Purpose: This study aimed to investigate the shear bond strength of RMGI to composite resin using different mechanical surface preparation methods.
Materials and Method: In this in vitro study, 72 RMGI samples were prepared in six groups (n=12): control, acid etching, air abrasion with aluminum oxide (Al2O3), bur, Er: YAG laser, and Er, Cr: YSGG laser groups. Two samples from each group were randomly examined under a scanning electron microscope (SEM). A bonding layer and composite resin were applied and cured. Then the samples were subjected to 5000-cycles thermocycling procedure. The shear bond strength was then evaluated using a universal testing machine. Finally, the failed surface of the samples was evaluated under a light microscope to examine the failure mode. For the statistical analysis, one-way ANOVA and Games-Howell post hoc test was used to compare quantitative variables and chi-squared test to investigate the relationship between the failure mode and the groups. The significant level was set at 0.05.
Results: The results showed significant differences between the mean of the strength variable in the groups (p< .001). The acid-etch and air abrasion groups exhibited significantly the lowest and highest values, respectively. The chi-squared test results also showed a significant relationship between the failure mode in the study groups (p= .008).
Conclusion: Acid etching before completing RMGI polymerization could adversely affect shear bond strength. The air abrasion and bur methods are among the best methods to increase the shear bond strength between composite resin and RMGI. Using Er, Cr: YSGG and Er: YAG lasers could increase the bond strength results.
کلیدواژه‌ها
Lasers؛ Glass ionomer cements؛ Composite resins؛ Bond strength
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