Long-term evaluation of warm-air treatment effect on adaptation of silane-containing universal adhesives to lithium disilicate ceramic

Abstract

The effect of warm air-blowing on the sealing ability of two one-bottle and one two-bottle silane-containing universal adhesives (UAs) applied to lithium disilicate ceramics (LDS) was evaluated. Tapered cavities prefabricated in LDS blocks (IPS e.max CAD) were treated by the adhesives, air-blown either with normal air (23±1°C) or warm air (60±5°C), and filled with a flowable resin composite. Interfacial gap formation was observed using swept-source optical coherence tomography immediately after filling, after 24 h, 5,000 and 10,000 thermal cycles, and an additional 1-year water storage. Specimens bonded using normal air-blown one-bottle UAs exhibited a significantly higher gap formation than the two-bottle UA (p<0.001), and detached within 24 h. Warm air-blowing significantly decreased the gap formation of one-bottle UAs (p<0.001), but the specimens dislocated within 24 h or during thermocycling. The twobottle UA withstood all aging procedures and warm air-blowing significantly decreased its 1-year gap formation compared to normal air-blowing (p=0.002).

The Use of Warm Air for Solvent Evaporation in Adhesive Dentistry: A Meta-Analysis of In Vitro Studies

“…Thirty-six studies were chosen for full-text reading, and one article was included after hand searching the references from these documents. After reading the full text, nine articles were excluded due to several reasons: in (4), the bond strength was not evaluated [18,[30][31][32]; in (4), a warm air stream was not tested [33][34][35][36]; and (1) was a thesis [37]. Then, a total of 28 articles were included in the qualitative analysis [12][13][14]16,20,21,23,24,29,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56].…”