Morphological changes induced by short pulse hydrogen fluoride laser radiation on dental hard tissue and restorative materials

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

“…Chemical changes as well as surface roughening induced in dentin by laser irradiation might increase the bonding surface area, hence the adhesion. 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.…”

Barium Chalcogenide Crystals: A Review

“…As a result, such sources find a wide range of applications, including atmospheric monitoring systems [2,3], noninvasive medical diagnostics [4,5], thermography (thermal imaging) [6], laser surgery [7,8], and various other applications. In various applications, particularly gas analysis applications, the mid-IR range sources listed below are commonly used: CO and CO 2 gas lasers [3,7] along with their frequencydoubled radiation [9,10]; hydrogen fluoride (HF) and deuterium fluoride (DF) chemical lasers [11]; solid-state lasers utilizing crystals doped with transition metals and rare earth ions [12]; III-V diode and IV-VI lead salt diode lasers [13]; tunable quantum cascade lasers (QCLs) [14,15]; and frequency down-converters, like optical parametric oscillators (OPOs) and difference frequency generators (DFGs) [16,17].…”