Does the application of whitening dentifrices during at-home bleaching affect the bond strength of resin composite to dentin?

BMC Oral Health

Research

Farzaneh Ahrari¹  Atefeh Nemati-Karimooy²  Horieh Moosavi²  Fatemeh Rezaei³  Zahra Yavari⁴ 

[1] Dental Research Center, School of Dentistry, Mashhad University of Medical Sciences, Vakilabad Blvd, Mashhad, Iran;Department of Restorative and Cosmetic Dentistry, School of Dentistry, Mashhad University of Medical Sciences, Mashhad, Iran;I.M. Sechenova Medical Institute, Moscow, Russia;Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran;

关键词: Bleaching;    Dental bonding;    Whitening dentifrice;    Toothpaste;    Bond strength;    Ozone;    Polymerization;    Bleaching agents;    Curing light;    Composite resins;   

DOI  :  10.1186/s12903-022-02680-7

 received in 2022-09-25, accepted in 2022-12-19,  发布年份 2022

来源: Springer

【 摘 要 】

AimThis study aimed to evaluate the effect of using whitening dentifrices during at-home bleaching on the shear bond strength (SBS) of resin composite to dentin, and investigate whether the increased polymerization time would improve SBS.MethodsNinety-six bovine incisors were divided into 4 groups of 24, according to the whitening treatment applied as follows: group 1, at-home bleaching + brushing with a regular dentifrice; group 2, at-home bleaching + brushing with a whitening dentifrice containing ozone; group 3, at-home bleaching + brushing with a commercial whitening dentifrice; and group 4 (control), no whitening/brushing treatment. Each group was divided into two subgroups (n = 12) to assess the effect of curing time (20 versus 80 s) on SBS. A self-etch adhesive was bonded to dentin, and after 2-day water storage, SBS was determined.ResultsSBS was significantly affected by the whitening treatment (P = 0.03), but increasing the curing time had no significant effect on SBS (P = 0.137). Bond strength in group 1 was comparable to the control group (P > 0.05). The specimens in group 3 displayed significantly lower SBS than either group 4 or group 1 (P > 0.05). No significant difference was observed between the SBS of group 2 compared to any other group (P > 0.05). There was no significant association between the treatment group and failure type (P > 0.05).ConclusionThe bonding interface was not negatively influenced by the at-home bleaching procedure. However, using a commercial whitening dentifrice during at-home bleaching produced a significant detrimental effect on SBS. Extending the curing time would have no beneficial effect on adhesion to a whitened dental substrate.

【 授权许可】

CC BY   
© The Author(s) 2022

【 图 表 】

Fig. 1

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