The effect of immediate dentin sealing with chlorhexidine pretreatment on the shear bond strength of dual‐cure adhesive cement

Abstract

The purpose of this in vitro study was to evaluate the effect of immediate dentin sealing (IDS) with and without chlorhexidine (CHX) pretreatment on the shear bond strength (SBS) of dual-cure adhesive resin cement. Mid-coronal dentin surfaces were obtained from 75 human molars. They were randomly allocated into five groups in accordance to type of IDS [etch&rinse/ER (Adper Single Bond2) and universal/U adhesive systems (Single Bond Universal)] and presence of CHX application (n = 15): Group ER; Group ER + CHX; Group U; Group U + CHX; and Group C (no IDS). Dualcure adhesive resin cements were bonded with a cylinder-shaped Teflon mold. The SBS was measured using a universal test machine. Fracture type was evaluated with stereomicroscope. The resin/dentin interfaces were examined with an environmental scanning electron microscope. Data were statistically analyzed with two-way analysis of variance and Bonferroni tests (p < .05). Regarding the IDS treatment groups with/ without CHX, there were no significant differences in SBS (p > .05). Group U + CHX showed significantly higher SBS than Group C (p < .05). Regarding the presence of CHX, no significant differences in SBS were found (p > .05). The prevalent failure mode was the mixed type for most of the groups. Group C exhibited an intact and regular hybrid layer with no resin tag, whereas longer and clear resin-tag formation was visible for Group U + CHX. CHX pretreatment improved the bond strength between adhesive resin cement and dentin when IDS treatment was performed with a universal adhesive system.

Immediate Dentin Sealing for Adhesive Cementation of Indirect Restorations: A Systematic Review and Meta-Analysis

“…Thus, a total of 22 studies were considered in the qualitative analysis. One study was excluded from the quantitative analysis because data on bond strength were not available [ 26 ], giving 21 studies considered for the meta-analysis [ 12 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ].…”

“…A meta-analysis of the 21 in vitro studies was conducted [ 12 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 ], and separate analyses for immediate and aged bond strength were performed. Separate subgroups were analyzed for each aging time considering the type of adhesive used.…”

Effect of Immediate Dentin Sealing on the Bonding Performance of Indirect Restorations: A Systematic Review

“…Overall, the literature supported IDS’s ability to improve bond strength. A few showed negative or no impact [ 36 , 58 , 59 , 67 ], while several showed benefits contingents upon the resin cement [ 34 , 35 , 43 , 45 , 57 ], DBA [ 39 , 46 , 56 ], or flowable RBC [ 23 , 32 , 69 ].…”

“…Among bond strength methodologies used by the included studies, 37 studies evaluated microtensile bond strength to dentin , 15 evaluated shear bond strength to dentin [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68], 3 evaluated microshear bond strength to Table 2 describes details of the included studies, such as publication year, type of tooth, IDS material, restoration material, temporary material, conditioning method, sample size, test method, and aging. Among bond strength methodologies used by the included studies, 37 studies evaluated microtensile bond strength to dentin , 15 evaluated shear bond strength to dentin [54][55][56][57][58][59][60][61][62][63][64][65][66][67][68], 3 evaluated microshear bond strength to dentin [69][70][71], and 5 evaluated tensile bond strength to dentin [72][73][74][75][76]. The majority of the studies used human molar and premolar teeth, while eight studies used bovine teeth for the bond strength test [50,[69][70][71]…”

Ação da solução de chá verde encapsulada em nanoquitosana na dentina submetida à biocorrosão: resistência adesiva da interface e atividade das metaloproteinases da matriz

“…O uso de inibidores de MMPs, antes da aplicação do sistema adesivo na dentina parece ser um passo importante para qualidade da camada híbrida 43,44. A clorexidina como prétratamento demonstrou ser eficaz na redução da degradação da interface resina-dentina (DENIZ et al, 2021, GIACOMINI et al, 2020. No entanto, o resultado do presente estudo demostrou que o uso do chá verde + NanoQ, usado no pré-tratamento da dentina interferiu positivamente na melhora na preservação da qualidade interface adesiva.…”