TY - JOUR
T1 - Changes in enamel after bleaching pre-treatment with non-thermal atmospheric plasma
AU - Ruivo, Melissa A.
AU - Nima, Gabriel
AU - Pacheco, Rafael R.
AU - Lancellotti, Ailla C.R.A.
AU - Palma-Dibb, Regina G.
AU - Faraoni, Juliana J.
AU - Soares, Luis E.S.
AU - Martins, Airton A.
AU - Lopes, Bruno B.
AU - Giannini, Marcelo
N1 - Funding Information:
This study was supported in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil ( CAPES ) - Finance Code 001, by CAPES Research Grant 8782018 and National Council for Scientific and Technological Development [ CNPq # 304692/2018-2 ], from Brazil.
Publisher Copyright:
© 2020 Elsevier GmbH
PY - 2020/9/1
Y1 - 2020/9/1
N2 - The aim of this study was to evaluate color change, mineral composition and topography of the enamel after the pre-treatment with non-thermal atmospheric plasma (NTAP) followed by 38% hydrogen peroxide (HP) bleaching. Buccal enamel of bovine incisors teeth was stained with black tea solution and then divided into five groups (n = 12), according to the plasma application time: PL1 (one minute) or PL2 (2 min) and number of HP applications: HP1 (one) and HP3 (three). The following groups were investigated: HP3, PL1+HP1, PL1+HP3, PL2+HP1 and PL2+HP3. Four color measurements: initial (untreated), after staining and after bleaching (first and second sessions), were performed using an intraoral spectrophotometer (Vita Easyshade). Energy Dispersive X-ray Spectroscopy (EDX) was used to analyze the mineral composition of the enamel before and after two bleaching sessions. Laser confocal microscopy was used to analyze the enamel topography. The pre-treatment with NTAP did not improve the whitening results. The use of NTAP preserves the concentration of calcium and phosphorus, only HP3 group experimented a significant decrease in the mineral concentration. All the bleached groups, with or without NTAP treatment increased their enamel roughness. The application of NTAP did not influence the color change, but it was important to maintain the mineral composition of bleached teeth. All the groups increased their roughness level.
AB - The aim of this study was to evaluate color change, mineral composition and topography of the enamel after the pre-treatment with non-thermal atmospheric plasma (NTAP) followed by 38% hydrogen peroxide (HP) bleaching. Buccal enamel of bovine incisors teeth was stained with black tea solution and then divided into five groups (n = 12), according to the plasma application time: PL1 (one minute) or PL2 (2 min) and number of HP applications: HP1 (one) and HP3 (three). The following groups were investigated: HP3, PL1+HP1, PL1+HP3, PL2+HP1 and PL2+HP3. Four color measurements: initial (untreated), after staining and after bleaching (first and second sessions), were performed using an intraoral spectrophotometer (Vita Easyshade). Energy Dispersive X-ray Spectroscopy (EDX) was used to analyze the mineral composition of the enamel before and after two bleaching sessions. Laser confocal microscopy was used to analyze the enamel topography. The pre-treatment with NTAP did not improve the whitening results. The use of NTAP preserves the concentration of calcium and phosphorus, only HP3 group experimented a significant decrease in the mineral concentration. All the bleached groups, with or without NTAP treatment increased their enamel roughness. The application of NTAP did not influence the color change, but it was important to maintain the mineral composition of bleached teeth. All the groups increased their roughness level.
KW - Enamel
KW - Non-thermal atmospheric pressure plasma
KW - Tooth dental bleaching
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U2 - 10.1016/j.cpme.2020.100106
DO - 10.1016/j.cpme.2020.100106
M3 - Article
AN - SCOPUS:85088783480
SN - 2212-8166
VL - 19-20
JO - Clinical Plasma Medicine
JF - Clinical Plasma Medicine
M1 - 100106
ER -