Effect of air-blowing time and long-term storage on bond strength of universal adhesives to dentin

What's new for the clinician: excerpts from and summaries of recently published papers

“…The newly introduced universal adhesive systems rapidly gained attention from dental clinicians due to their flexible application mode. 1 Considering their compositions, universal adhesives are similar to the one-step self-etching system since all ingredients are incorporated into one bottle.…”

“…Air-drying after application of the adhesive is considered a crucial step in the bonding procedure. 1 Within that step alone, many factors can affect the bond strength, including air-blowing time, air pressure, and air temperature. 1 According to the conventional 3-step etch and rinse adhesive systems, the air-blowing step is necessary to evaporate the solvent from the primer and to achieve a uniform, thin bonding layer.…”

“…Tooth discoloration caused by restorative and endodontic materials has been evaluated with subjective approaches and objective methods. 1 Spectrophotometers, colorimeters, digital photography, and digital image analysis techniques enable the objective evaluation of colour and colour change over time. 1 Instrumental measurements commonly employ the Commission International de L'Eclairage's (CIE's) L*, a*, b* system.…”

“…1 Spectrophotometers, colorimeters, digital photography, and digital image analysis techniques enable the objective evaluation of colour and colour change over time. 1 Instrumental measurements commonly employ the Commission International de L'Eclairage's (CIE's) L*, a*, b* system. The CIE L*a*b* colour coordinates enable the determination of colour in three-dimensional space.…”

“…L* values describe lightness, which ranges from black (0) to white (100); a* values represents red (+ 80a*) to green (− 80a*) colour changes; and b* values represent yellow (+ 80b*) to blue (− 80b*) colour changes. 1 Ekici and colleagues (2019) 1 reported on a study that sought to evaluate the tooth crown discoloration induced by commonly used and new-generation endodontic sealers at one month and one and three years after application.…”