Scatolin, R. S.
Lepri, T. P.
Alexandria, A. K.
Maia, L. C.
Borsatto, M. C.
Corona, S. A. M.
Total Authors: 8
 Univ Sao Paulo, Dent Sch Ribeirao Preto, Dept Restorat Dent, BR-14049 Ribeirao Preto, SP - Brazil
 Univ Ribeirao Preto, Sch Dent, Ribeirao Preto, SP - Brazil
 Univ Fed Rio de Janeiro, Sch Dent, Dept Pediat & Orthodont, Rio De Janeiro, RJ - Brazil
 Univ Sao Paulo, Dent Sch Ribeirao Preto, Dept Dent Mat & Prosthet Dent, BR-14049 Ribeirao Preto, SP - Brazil
 Univ Sao Paulo, Dent Sch Ribeirao Preto, Dept Pediat Clin Prevent & Community Dent, BR-14049 Ribeirao Preto, SP - Brazil
Total Affiliations: 5
Lasers in Medical Science;
Web of Science Citations:
This in situ study evaluated the effect of Er:YAG laser irradiation in controlling the progression of enamel erosion-like lesions. Fifty-six enamel slabs (330 KHN +/- 10 %) with one fourth of the surface covered with resin composite (control area) were submitted to initial erosion-like lesion formation with citric acid. The slabs were divided into two groups: irradiated with Er:YAG laser and non-irradiated. Fourteen volunteers used an intraoral palatal appliance containing two slabs, in two phases of 5 days each. During the intraoral phase, in a crossed-over design, half of the volunteers immersed the appliance in citric acid while the other half used deionized water, both for 5 min, three times per day. Enamel wear was determined by an optical 3D profilometer. ANOVA revealed that when deionized water was used as immersion solution during the intraoral phase, lower values of wear were showed when compared with the groups that were eroded with citric acid, whether irradiated or non-irradiated with Er:YAG laser. When erosion with citric acid was performed, Er:YAG laser was not able to reduce enamel wear. Small changes on enamel surface were observed when it was irradiated with Er:YAG laser. It may be concluded that Er:YAG laser irradiation did not reduce the progression of erosive lesions on enamel submitted to in situ erosion with citric acid. (AU)