Influence of Laser Irradiation on Pits and Fissures: AnIn SituStudy

Abstract

Based on the results from the present study, it may be concluded that the CO(2) and Nd:YAG lasers increased the enamel acid resistance in pits and fissures.

Erbium Lasers for the Prevention of Enamel and Dentin Demineralization: A Literature Review

“…103 The irradiation of pits and fissures with an Er:YAG laser (2 Hz, 80 mJ) submitted to an in situ model, revealed no significant difference in demineralization prevention. 75 Er:YAG laser irradiation (2 Hz, 80 mJ) also failed to control the progression of enamel erosion in situ. 46 Higher energy densities (62.5 and 87.5 J/cm 2 ) 104,105 were also tested in the in situ model and showed that Er:YAG laser presented a similar performance of the high-speed handpiece with regard to the demineralized area, the inhibition zone width, the crack occurrence, and the demineralization score in enamel adjacent to composite resin restorations.…”

“…56 In contrast, the other studies reported that the results of Er:YAG laser in occlusal fissure caries prevention were similar to those achieved in the control portion of the substrate. 45,75 One hypothesis given by the authors for these findings could be related to the use of water cooling during irradiation. The irregularity of the occlusal surface could promote water buildup at the bottom of the fissures, and the necessary heating temperature was not reached.…”

“…45,56,75 The first in vitro study applied ablation parameters on occlusal surfaces using Er:YAG (2 Hz, 135 mJ, 64 J/cm 2 ) and Er:YSGG (2 Hz, 454 mJ, 105 J/cm 2 ) with water cooling, 56 and the other studies performed in vitro and in situ studies and applied lower energy parameters (2 Hz, 80 mJ, 1.26 J/cm 2 ) with water cooling. 45,75 Only the first study cited that applied higher energy densities showed positive results, consisting of a 50% inhibition of caries progression for the Er:YAG laser (64 J/cm 2 ) and 72% caries inhibition for the Er:YSGG laser (105 J/cm 2 ) when compared with the control group. 56 According to the authors, as a beneficial side effect of peripheral heat deposition during the laser procedure, the walls of the prepared cavity may acquire an increased resistance to decay.…”

Chemical Changes of Enamel Produced by Sodium Fluoride, Hydroxyapatite, Er:YAG Laser, and Combined Treatments

“…There are dental surfaces where caries develop more frequently [2,3], including the occlusal surfaces [3,4]. This is mainly due to the morphology of these surfaces, which are characterized by pits and fissures that favor the accumulation and proliferation of pathogenic caries organisms [2,5,6].…”

Análise in vitro e in situ da erosão dental e de métodos de prevenção em pacientes portadores da doença do refluxo gastroesofágico

“…Os lasers Nd:YAG e CO2 foram selecionados por haver relatos na literatura sobre sua superioridade no aumento da resistência ácida do esmalte em relação aos outros lasers (Bedini et al,2010;Corrêa-Afonso et al, 2012;Corrêa-Afonso et al, 2013;Cohen et al, 2014).…”