title: Characterization of dentifrices containing desensitizing agents, triclosan or whitening agents: EDX and SEM analysis.
abstract: Dentifrices with different compositions are available on the market, but there is limited information about their properties. The aim of this in vitro study was to evaluate the physicochemical characteristics of 12 dentifrices divided into three categories, as containing desensitizing agents, Triclosan or whitening agents. Desiccation loss/residue analysis: 5 g of dentifrice was weighed five times for each group. pH analysis: 5 g of dentifrice were diluted in three parts of distilled water and analyzed using a digital potentiometer. Scanning electron microscopy (SEM): analysis of ashes, shape and size of the particles. Energy-dispersive x-ray spectroscopy (EDX): identification of the abrasive elements. Data were analyzed using ANOVA, Bonferroni post hoc test (α=0.05). Desiccation loss: 38.21% to 65.83%. Dentifrices containing Triclosan and desensitizing agents showed statistically significant differences among them (p<0.05). Whitening dentifrices showed statistically significant differences between Close-Up Whitening and Sensodyne Branqueador (44.72%, 65.83%, respectively). Most dentifrices presented neutral or basic pH. Different shape and size particles were observed in the SEM analysis. Abrasive elements were identified in the EDX. These results demonstrate that the evaluated dentifrices had different properties and their composition influences directly their characteristics, thus resulting in a more or less abrasive action on tooth surface. Knowing the characteristics of the dentifrices is important to indicate the ideal product for each case.
authors.affiliation: Department of Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil.
authors.forename: Shelon Cristina Souza
authors.initials: SC
authors.lastname: Pinto
authors.affiliation: Department of Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil.
authors.forename: Sérgio Paulo
authors.initials: SP
authors.lastname: Hilgenberg
authors.affiliation: Department of Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil.
authors.forename: Denise Stadler
authors.initials: DS
authors.lastname: Wambier
authors.affiliation: Department of Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil.
authors.forename: Paulo Vitor
authors.initials: PV
authors.lastname: Farago
authors.affiliation: Department of Post-Graduation, School of Dentistry, UniCEUMA - CEUMA University, São Luis, MA, Brazil.
authors.forename: Matheus Coelho
authors.initials: MC
authors.lastname: Bandéca
authors.affiliation: Department of Dentistry, School of Dentistry, Ponta Grossa State University, Ponta Grossa, PR, Brazil.
authors.forename: Fábio André
authors.initials: FA
authors.lastname: Santos
mesh_terms: D003802:Dentifrices; D008855:Microscopy, Electron, Scanning; D013052:Spectrometry, X-Ray Emission; D058205:Tooth Bleaching Agents / Q000737:chemistry*; D014260:Triclosan / Q000737:chemistry*
chemical_list: D003802:Dentifrices; D058205:Tooth Bleaching Agents; D014260:Triclosan