Human dental enamel evaluation after radiotherapy simulation and laminates debonding with Er,Cr:YSGG using SEM and EDS
DOI:
https://doi.org/10.5935/2525-5711.20190022Keywords:
Radiotherapy, Gamma Rays, Lasers, Solid-State, Dental Enamel, Head and Neck NeoplasmsAbstract
The pursuit of perfection makes younger people undergo aesthetic procedures without formal indication. However, young patients may be susceptible to a disease such as head and neck cancer which treatment can compromise the adhesion of these indirect mate- rials. Here, we present an analyze, of the gamma radiation effects on crystallographic morphology of human dental enamel after laminate veneer debonding with Er,Cr:YSGG laser. Thus, human dental enamel samples were prepared and randomized into 2 groups (n=10): Laser Irradiation (L) and Gamma + Laser Irradiation (GL) group. Scanning elec- tron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) were performed before bonding and after debonding using Er,Cr:YSGG. Only Gamma + Laser Irradia- tion group received a cumulative dose of 70 Gy gamma radiation used in head and neck cancer radiotherapy. SEM images showed that both GL and L groups presented altered morphology. EDS showed an decrease in Ca and P intensities after laser debonding of laminates veneers in both group. Therefore, a proper laser facet removal protocol should be established for healthy patients and patients who have been exposed to radiotherapy for head and neck cancer.
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Copyright (c) 1969 Thais Freitas Rabelo, Claudia Bianchi Zamataro, Nielsen Grosko Kuchar, Nathalia Zanini, Amanda Caramel Juvino, Matheus del-Valle, Pedro Arthur Augusto Castro, Moises Oliveira Santos, Denise Maria Zezell
This work is licensed under a Creative Commons Attribution 4.0 International License.
