Are self‐etch adhesive systems effective in the retention of occlusal sealants? A systematic review and meta‐analysis

Abstract

Occlusal sealants applied with self-etch systems show lower retention throughout time than sealants applied in the conventional approach, regardless of the use of adhesive systems.

Dental hypomineralization treatment: A systematic review

“…However, results regarding the use of an adhesive prior to fissure sealant application are conflicting . In 2015 a meta‐analysis carried out by Botton et al concluded that the nonuse of an adhesive resulted in a higher retention rate of fissure sealants in teeth without hypomineralization. As so, further studies are needed in order to confirm the results reported by Lygidakis et al…”

Resin infiltration of deproteinised natural occlusal subsurface lesions improves initial quality of fissure sealing

“…53 The prismless enamel layer of occlusal fissures is acid-resistant (thus delaying the onset of caries), 54 and etching efficacy has been attributed to the strength of the used acid (and to the etching time). 55 From a series of experiments, it became clear that a regular etch pattern with increased surface roughness is possible at the very base of pits and fissures, 54 thus providing the basis for adhesive linkage. Therefore, mechanical removal of aprismatic enamel (by enameloplasty or fissurotomy), though favourable in some cases, 56 would seem dispensable, 35 whereas etching (using etch-and-rinse systems) is regarded as essential for adequate mechanical adhesion and minimising loss of retention.…”

“…Therefore, mechanical removal of aprismatic enamel (by enameloplasty or fissurotomy), though favourable in some cases, 56 would seem dispensable, 35 whereas etching (using etch-and-rinse systems) is regarded as essential for adequate mechanical adhesion and minimising loss of retention. 55, 56 …”

“…41, 61 Regarding the outcome of timely sealant materials, several shortcomings have been identified, and these limitations include pretreatment modalities of enamel, 12, 55, 57, 60 curing modes, 60 and viscoelastic properties of the material. 12, 13, 36, 37, 60 Polymerisation contraction and hygroscopic and thermal expansion of fissure sealants 64 might lead to microleakage and gap formation, whereas filler content should affect fracture resistance.…”

“…The latter typically reveal reduced retention time compared with conventional sealing. 55 Instead, it should be borne in mind that the primary beneficial effect of the RI is due to its inherent penetration capabilities, thus occluding the porous volume of carious lesions and achieving superior results compared with other adhesive bonding agents. 58, 68 Hence, although fissure sealing as a resinous top coat provides an impermeable diffusion barrier, the infiltrated lesion itself constitutes an obstacle located inside the lesion with a safeguarding function in case of breakdown or extensive wear and abrasion of the sealant.…”