Abstract
BackgroundDentin hypersensitivity is a short, severe pain with fast onset. Therapy aims to either prevent or decrease neural transmission or physically occlude the dentinal tubules. This study aimed to evaluate the effectiveness of commercial desensitizing dentifrice by means of an ex vivo method.Material and MethodsSamples (n=8 lower human premolars for each group) were randomly allocated into: G1- brushing with Colgate®Sensitive Pro-Relief; G2- brushing with Sensodyne®Rapid Relief; G3- brushing with Sensodyne®Repair & Protect; and G4- brushing with Colgate®Maximum Cavity Protection. The test bodies were submitted to simulated toothbrushing and dentifrices were analyzed regarding their hydrodynamic size, polydispersity index (PI) and zeta potential. Specimens were evaluated using: scanning electron microscopy (SEM); spectroscopy energy dispersive X-ray (EDS); and profilometry. A qualitative analysis of the photomicrographs and topographies was performed.ResultsThe dentifrices showed statistical similar physical and chemical characteristics. They also demonstrated obliteration of dentinal tubules when micrographs were observed. Regarding the chemical elements present in the dentin samples, there was a statistically significant difference between the control and experimental surfaces in the four groups.ConclusionsJoint data analysis shows that the desensitizing dentifrice showed better results with regards to the obliteration of dentinal tubules compared to positive and negative controls. Key words:Dentin hypersensitivity, dentin desensitizing agents, toothpastes.
Highlights
Improvements in the oral health status of the worldwide population are currently noteworthy, as well as the efficacy of dental treatments, which leads to lower rates of caries and periodontal diseases, contributing to the maintenance of the teeth in the oral cavity for longer [1].These factors, combined with the longer life expectancy of the world population, can indirectly lead to increased rate of dentin hypersensitivity (DH), since the higher the individual’s age and the number of teeth he has, the greater the chances of having DH [1,2]
By checking the chemical elements of specimens from Group 3, a statistically significant difference (p
The smaller the dentifrice particles, the easier is their penetration into the dentinal tubules
Summary
Improvements in the oral health status of the worldwide population are currently noteworthy, as well as the efficacy of dental treatments, which leads to lower rates of caries and periodontal diseases, contributing to the maintenance of the teeth in the oral cavity for longer [1].These factors, combined with the longer life expectancy of the world population, can indirectly lead to increased rate of dentin hypersensitivity (DH), since the higher the individual’s age and the number of teeth he has, the greater the chances of having DH [1,2]. Improvements in the oral health status of the worldwide population are currently noteworthy, as well as the efficacy of dental treatments, which leads to lower rates of caries and periodontal diseases, contributing to the maintenance of the teeth in the oral cavity for longer [1]. Given the foregoing, the present study aimed to: (i) physically and -chemically assess four brands of commercial desensitizing dentifrice, in terms of their average particle size and surface charge; and (ii) determine their ex vivo effectiveness with regards to the obliteration process of the dentinal tubules. Conclusions: Joint data analysis shows that the desensitizing dentifrice showed better results with regards to the obliteration of dentinal tubules compared to positive and negative controls
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