IJETSI

Title: LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) USED TO ANALYZE THE EVOLUTION OF MINERAL CONTENT OF ENAMEL AFTER WHITENING AND ITS RECOVERY WITH A DESENSITIZING GEL
Authors: Guillermo Alejandro Veliz Silva , Roberto Mendez Maya ,Jorge Humberto Luna Dominguez , Carlos Alberto Luna Lara , Rogelio Oliver Parra , Bertha Luna Garcia , Jose Macario Hernandez Izaguirre , Luis Vidal Ponce Cabrera
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Guillermo Alejandro Veliz Silva1 , Roberto Mendez Maya2 ,Jorge Humberto Luna Dominguez2 , Carlos Alberto Luna Lara2 , Rogelio Oliver Parra2 , Bertha Luna Garcia2 , Jose Macario Hernandez Izaguirre2 , Luis Vidal Ponce Cabrera 1Graduate Speciality in Prosthodontics, Fac. de Odontologia, Universidad Autonoma de Tamaulipas. 2Profesor titular de la Fac. de Odontologia, Universidad Autonoma de Tamaulipas. 3Profesor Investigador del Instituto Politecnico Nacional, CICATA Altamira.
MLA 8 Silva, Guillermo Alejandro Veliz, et al. "LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) USED TO ANALYZE THE EVOLUTION OF MINERAL CONTENT OF ENAMEL AFTER WHITENING AND ITS RECOVERY WITH A DESENSITIZING GEL." IJETSI, vol. 3, no. 1, Jan.-Feb. 2018, pp. 85-95, ijetsi.org/more2018.php?id=7. APA Silva, G., Maya, R., Dominguez, J., Lara, C., Parra, R., Garcia, B., Izaguirre, J., & Cabrera, L. (2018, January/February). LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) USED TO ANALYZE THE EVOLUTION OF MINERAL CONTENT OF ENAMEL AFTER WHITENING AND ITS RECOVERY WITH A DESENSITIZING GEL. IJETSI, 3(1), 85-95. Chicago Silva, Guillermo Alejandro Veliz, Roberto Mendez Maya, Jorge Humberto Luna Dominguez, Carlos Alberto Luna Lara, Rogelio Oliver Parra, Bertha Luna Garcia, Jose Macario Hernandez Izaguirre, and Luis Vidal Ponce Cabrera. "LASER-INDUCED BREAKDOWN SPECTROSCOPY (LIBS) USED TO ANALYZE THE EVOLUTION OF MINERAL CONTENT OF ENAMEL AFTER WHITENING AND ITS RECOVERY WITH A DESENSITIZING GEL." IJETSI 3, no. 1 (January/February 2018), 85-95.
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Abstract: Objective: To analyze the mineral composition of enamel after a whitening treatment using hydrogen peroxide at 35% (HP) and a subsequent recovery treatment with desensitizing gel containing potassium nitrate at 3% and sodium fluoride at 0.25%, using the LIBS technique. Study design: Thirteen healthy premolars were exposed to in vitro tooth whitening using HP at 35% (WhiteGold, Dentsply, USA) and subsequently treated with a desensitizing gel containing potassium nitrate at 3% and sodium fluoride at 0.25% (UltraEZ, Ultradent, South Jordan, UT, USA) to assess the recovery of mineral content lost because of the treatment with HP. The content of Ca, Mg, Na, C and CaF was repeatedly evaluated using laser-induced breakdown spectroscopy of the control enamel (M1), enamel exposed to HP (M2), enamel treated with potassium nitrate and sodium fluoride at 24 hours (M3), 7 days (M4) and 14 days (M5) after whitening. Results: The presence of elements like Ca, Mg, Na, C and the compound CaF, was detected, proving there is no mineral recovery after applying potassium nitrate at 3% and sodium fluoride at 0.25%. Conclusions: The use of a desensitizing gel containing potassium nitrate at 3% and sodium fluoride at 0.25% does not recover the mineral content of the enamel treated with HP at 35% The LIBS technique allowed to verify the presence of elements such as Ca, Mg, Na, C and the compound CaF, as well as the temporal modifications of their proportions in enamel.

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