However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .
Effect of haemostatic agent application on the shear bond strength of contemporary/multi-mode adhesive systems.
OBJECTIVES The aim was to determine the effect of blood contamination and haemostatic agent application on the shear bond strength ( SBS ) of different adhesives to dentin . MATERIAL S AND METHODS Seventy-two extracted human molars were used in this study . Teeth were mounted acrylic in moulds . Mesial and distal surfaces were removed to obtain flat dentin surfaces ( n=144 ) and grinded with a 600 grit s and paper . The sample s were r and omly divided into three main groups ( N=48 ) based on the adhesive system and application procedures . GROUP 1 : No contamination ( control ) , GROUP 2 : Blood contamination , GROUP 3 : Blood Contamination+Haemostatic agent application . Each group was further divided into four subgroups : SUBGROUP I : Single Bond 2 ( etch- and -rinse ) Subgroup II : Clearfil SE Bond ( two-step self-etch ) Subgroup III : Single Bond Universal ( multimode , etch- and -rinse ) subgroup IV : Single Bond Universal ( multimode , all-in-one self-etch ) ( n=12 ) . Resin cylinders ( Filtek Z550 ) were bonded to the dentin surfaces according to the manufacturers ' instructions . A shear load was applied to the specimens using universal testing machine at a cross-head speed of 0.5 mm/min until failure . Data were analyzed statistically ( p<0.05 ) . RESULTS Statistically significant differences were observed between no contamination ( control ) and blood + haemostatic agent contamination groups for both Single Bond 2 ( etch- and -rinse ) and Single Bond Universal ( multimode , all-in-one self-etch ) ( p<0.05 ) . When the adhesive systems were compared to each other , no statistically significant differences were found in all contamination groups and control group for the mean SBS values ( p>0.05 ) . CONCLUSION When blood contamination is inevitable two step self- etching adhesive systems may be the choice of adhesive system in terms of shear bond strength
However , for the ultra-mild All-Bond Universal adhesive , the etch- and -rinse strategy was significantly different than the self-etch mode in terms of dentin micro-tensile bond strength , as well as in the global analysis of enamel micro-tensile and micro-shear bond strength ( p≤0.05 ) .
The enamel bond strength of universal adhesives is improved with prior phosphoric acid etching .
However , this effect was not evident for dentin with the use of mild universal adhesives with the etch- and -rinse strategy .
CLINICAL SIGNIFICANCE Selective enamel etching prior to the application of a mild universal adhesive is an advisable strategy for optimizing bonding
OBJECTIVES A systematic review was conducted to determine whether the etch- and -rinse or self-etching mode is the best protocol for dentin and enamel adhesion by universal adhesives .