Abrasion of 6 dentifrices measured by vertical scanning interference microscopy

Pascaretti-Grizon, Florence; Mabilleau, Guillaume; Chappard, Daniel

doi:10.1590/1679-775720130204

Cited by 14 publications

(9 citation statements)

References 21 publications

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“…Particle size and shape are also found to influence abrasion, particularly when comparing abrasives made from the same compound, as silicon dioxide (artificial silica) (15). This study presented some dentifrices with irregular and large particles, demonstrating greater abrasiveness.…”

Section: Discussionmentioning

confidence: 81%

“…The desiccation loss in the present study was similar among the groups. Sensodyne Original (64.07%), Sensodyne Cool Gel (60.85%) and Sensodyne Branqueador (65.83%) showed greater content of abrasive agents, but other studies found no correlation between the content of abrasives and abrasion degree (15,16).…”

Section: Discussionmentioning

confidence: 87%

“…A previous study concluded that dentifrices with calcium carbonate of rhombohedral or ovoid shape, a more regular structure, present lower abrasiveness than more irregular particles (12). Another study showed that dentifrices with sharp particles, regardless of the abrasive agent, calcium carbonate or silica abrasives, present lower abrasiveness (15). It is important to remind that chemically identical abrasives may have different effects and the mixture of these abrasives may result in effects that differ from those when the components are used individually (9).…”

Section: Discussionmentioning

confidence: 99%

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Characterization of Dentifrices Containing Desensitizing Agents, Triclosan or Whitening Agents: EDX and SEM Analysis

et al. 2014

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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.

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Section: Discussionmentioning

confidence: 81%

Section: Discussionmentioning

confidence: 87%

Section: Discussionmentioning

confidence: 99%

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Characterization of Dentifrices Containing Desensitizing Agents, Triclosan or Whitening Agents: EDX and SEM Analysis

et al. 2014

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“…This is corroborated by data from this study where effective biofilm removal without a detrimental effect to the substratum was observed at short exposure times (10 s). Longer exposure times of 10 min did cause an increase in surface roughness on a hydroxyapatite surface; however, this should be put into context of other studies where exposure of 2 min to toothbrushing using certain dentrifices produced a much greater surface abrasion than observed with a 10-min UAS exposure (Pascaretti-Grizon et al 2013). In addition, while the flow rate of 2.1 L/min used in this study provides good surface area coverage, there is the issue of requiring relatively large volumes of water, and thus miniaturization would be desirable.…”

Section: Discussionmentioning

confidence: 76%

Removal of Dental Biofilms with an Ultrasonically Activated Water Stream

et al. 2015

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Acidogenic bacteria within dental plaque biofilms are the causative agents of caries. Consequently, maintenance of a healthy oral environment with efficient biofilm removal strategies is important to limit caries, as well as halt progression to gingivitis and periodontitis. Recently, a novel cleaning device has been described using an ultrasonically activated stream (UAS) to generate a cavitation cloud of bubbles in a freely flowing water stream that has demonstrated the capacity to be effective at biofilm removal. In this study, UAS was evaluated for its ability to remove biofilms of the cariogenic pathogen Streptococcus mutans UA159, as well as Actinomyces naeslundii ATCC 12104 and Streptococcus oralis ATCC 9811, grown on machine-etched glass slides to generate a reproducible complex surface and artificial teeth from a typodont training model. Biofilm removal was assessed both visually and microscopically using high-speed videography, confocal scanning laser microscopy (CSLM), and scanning electron microscopy (SEM). Analysis by CSLM demonstrated a statistically significant 99.9% removal of S. mutans biofilms exposed to the UAS for 10 s, relative to both untreated control biofilms and biofilms exposed to the water stream alone without ultrasonic activation (P < 0.05). The water stream alone showed no statistically significant difference in removal compared with the untreated control (P = 0.24). High-speed videography demonstrated a rapid rate (151 mm(2) in 1 s) of biofilm removal. The UAS was also highly effective at S. mutans, A. naeslundii, and S. oralis biofilm removal from machine-etched glass and S. mutans from typodont surfaces with complex topography. Consequently, UAS technology represents a potentially effective method for biofilm removal and improved oral hygiene.

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“…The relation between the abrasive potential of toothpastes, alterations on enamel and restorative materials has been evaluated by many studies [35]. In fact, it was reported by Pinto et al [7] that dentifrices abrasiveness might be affected by the quality and the quantity of abrasives, unlike other studies, where no correlation between the content of abrasives and abrasion degree has been detected [36]. In the present study, sodium carbonate and calcium carbonate were used as combined abrasive agents for formula 2, similarly to Moore and Addy [37] who formulated toothpaste with a combination of different abrasive agents (artificial silicas, tixosil, Zeodent and calcium carbonate).…”

Section: Discussionmentioning

confidence: 99%