Volume 9, Issue 3 (9-2024)
J Res Dent Maxillofac Sci 2024, 9(3): 167-173 |
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Ethics code: Our study was conducted in laboratory conditions and on extracted teeth.
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Shahidi S, Heidari S, Rahimikhoob M, Farar B, Safarzadeh Khosroshahi S. Effect of a Desensitizing Agent on Microshear Bond Strength of Two Bonding Systems. J Res Dent Maxillofac Sci 2024; 9 (3) :167-173
URL: http://jrdms.dentaliau.ac.ir/article-1-554-en.html
URL: http://jrdms.dentaliau.ac.ir/article-1-554-en.html
Shaghayegh Shahidi1 
, Solmaz Heidari2 , Maryam Rahimikhoob3 , Bahareh Farar3 , Shadab Safarzadeh Khosroshahi * 
4
, Solmaz Heidari2 , Maryam Rahimikhoob3 , Bahareh Farar3 , Shadab Safarzadeh Khosroshahi * 4
1- Private Dental Practice, Tehran, Iran.
2- Department of Operative Dentistry, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
3- Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
4- Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. ,shadab.kh@gmail.com
2- Department of Operative Dentistry, Dental Caries Prevention Research Center, Qazvin University of Medical Sciences, Qazvin, Iran.
3- Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran.
4- Department of Operative Dentistry, Faculty of Dentistry, Tehran Medical Sciences, Islamic Azad University, Tehran, Iran. ,
Abstract: (222 Views)
Background and Aim: Postoperative tooth hypersensitivity after restorative procedures is a common finding. Considering the obstruction of dentinal tubules following the use of dentin desensitizers, there are some concerns about the effects of desensitizers on the bond strength of bonding systems. This study aimed to assess the effect of a desensitizer on microshear bond strength (µSBS) of two bonding systems.
Materials and Methods: In this in vitro study, 20 sound human molars were mesiodistally sectioned into halves, and the roots were cut at the cementoenamel junction. The samples (n=40) were then randomly divided into four groups (n=10): (I) Adper™ Single Bond 2, (II) Desensibilize desensitizing agent+ Adper™ Single Bond 2, (III) Single Bond Universal, and (IV) Desensibilize desensitizing agent + Single Bond Universal. Adhesives and desensitizing agents were applied according to the manufacturers’ instructions. Filtek Z250 composite cylinders were fabricated and bonded to dentin surfaces. The µSBS of each sample was then measured. Data were analyzed by one-way ANOVA and a post-hoc test (P<0.05).
Results: A reduction in µSBS was found following the application of desensitizing agent in combination with AdperTM Single Bond 2 (P<0.05). The µSBS increased when the desensitizing agent was applied in combination with Single Bond Universal. However, this difference was not significant (P˃0.05).
Conclusion: Desensibilize desensitizing agent affected the dentinal tubule obstruction and decreased the µSBS when used with AdperTM Single Bond 2 total-etch system, while the µSBS increased when it was used with Single Bond Universal adhesive.
Materials and Methods: In this in vitro study, 20 sound human molars were mesiodistally sectioned into halves, and the roots were cut at the cementoenamel junction. The samples (n=40) were then randomly divided into four groups (n=10): (I) Adper™ Single Bond 2, (II) Desensibilize desensitizing agent+ Adper™ Single Bond 2, (III) Single Bond Universal, and (IV) Desensibilize desensitizing agent + Single Bond Universal. Adhesives and desensitizing agents were applied according to the manufacturers’ instructions. Filtek Z250 composite cylinders were fabricated and bonded to dentin surfaces. The µSBS of each sample was then measured. Data were analyzed by one-way ANOVA and a post-hoc test (P<0.05).
Results: A reduction in µSBS was found following the application of desensitizing agent in combination with AdperTM Single Bond 2 (P<0.05). The µSBS increased when the desensitizing agent was applied in combination with Single Bond Universal. However, this difference was not significant (P˃0.05).
Conclusion: Desensibilize desensitizing agent affected the dentinal tubule obstruction and decreased the µSBS when used with AdperTM Single Bond 2 total-etch system, while the µSBS increased when it was used with Single Bond Universal adhesive.
Type of Study: Original article |
Subject:
Restorative Dentistry
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