Influence of Er:YAG laser irradiation distance on the bond strength of a restorative system to enamel

An In Vitro Comparison of the Bond Strength of Composite to Superficial and Deep Dentin, Treated With Er:YAG Laser Irradiation or Acid-Etching

“…2,14,16,17 The recent literature has not precisely verified the superiority of laser irradiation to acid-etching for treating dentinal surfaces prior to bonding. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] Previous reports have claimed that there are certain advantages in bonding to lased dentin because of an apparently enlarged surface area for adhesion based on the scaly and flaky surface appearance following Er:YAG irradiation. [33][34][35] In a study, the shear bond strength in deep lased dentin was better than in superficial lased dentin.…”

Shear bond strength of pit and fissure sealants on permanent teeth after several etching protocols: In vitro study

“…10,11 The adjunction of phosphoric acid etching to laser has not surpass simple acid etching, a finding corroborated in this and other studies outcomes. 8,12,13 However, its use could be justified by the fact that several studies 11,14,15 reported that enamel Er:YAG laser results in a suitable micro retentive pattern for adhesion and can increase enamel acid resistance, 9,15-17 contrary to acid etching which demineralizes enamel surface leading to caries. 15,18 Additionally, it is also thought to have an antibacterial effect by entrapping free ions 12,18,19 and forming remineralization microspaces.…”

“…8,12,13 However, its use could be justified by the fact that several studies 11,14,15 reported that enamel Er:YAG laser results in a suitable micro retentive pattern for adhesion and can increase enamel acid resistance, 9,15-17 contrary to acid etching which demineralizes enamel surface leading to caries. 15,18 Additionally, it is also thought to have an antibacterial effect by entrapping free ions 12,18,19 and forming remineralization microspaces. 12,19 Nevertheless, laser treatment requires specific considerations as the use of correct tip, 8,15,20 adequate energy, otherwise could result in sub or over ablative energy, causing either flacking 8,18,21,22 or vitrification.…”

“…15,18 Additionally, it is also thought to have an antibacterial effect by entrapping free ions 12,18,19 and forming remineralization microspaces. 12,19 Nevertheless, laser treatment requires specific considerations as the use of correct tip, 8,15,20 adequate energy, otherwise could result in sub or over ablative energy, causing either flacking 8,18,21,22 or vitrification. 8,20 Furthermore, dental tissues response depends on several conditions such as focal distance, irriga- tion, among others; 15,23 in addition, ablation process could lead to produce a microretentive surface on enamel.…”

“…12,19 Nevertheless, laser treatment requires specific considerations as the use of correct tip, 8,15,20 adequate energy, otherwise could result in sub or over ablative energy, causing either flacking 8,18,21,22 or vitrification. 8,20 Furthermore, dental tissues response depends on several conditions such as focal distance, irriga- tion, among others; 15,23 in addition, ablation process could lead to produce a microretentive surface on enamel. 20,22 Regarding the self-etching adhesive employed in this study, it had similar SBS values to all the groups, except for group VI (in combination with previous Er:YAG laser irradiation).…”