A mathematical model for predicting toothbrush stiffness

Rawls, H. Ralph; Mkwayi-Tulloch, N. J.; Krull, M. E.

doi:10.1016/s0109-5641(05)80040-5

Cited by 17 publications

(13 citation statements)

References 7 publications

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“…The stiffness of a toothbrush depends on various factors, such as modulus of elasticity, bristle and tuft diameter, number of tufts, the number of bristles per unit area packed into a tuft hole, and the trim length of bristles. 13 Moreover, the diameter of the filament play an important role as it determines the filament stiffness when the length and moduli of elasticity of the filaments are constant.…”

Section: Introductionmentioning

confidence: 99%

Abrasion of eroded dentin caused by toothpaste slurries of different abrasivity and toothbrushes of different filament diameter

Wiegand

Kuhn

Sener

et al. 2009

Journal of Dentistry

109

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Abrasion of eroded dentin caused by toothpaste slurries of different abrasivity and toothbrushes of different filament diameter SummaryObjective: This study aimed to evaluate the impact of toothpaste slurry abrasivity and toothbrush filament diameter on abrasion of eroded dentin in vitro.Methods: Eroded dentin samples (hydrochloric acid, pH: 2.6, 15s) were brushed with 40 strokes in an automatic brushing machine using manual toothbrushes with different filament diameter (0.15 mm, 0.20 mm or 0.25 mm). The toothbrushes were applied with a control slurry free of abrasive particles (RDA-value: 10) or toothpastes slurries with different abrasivity (RDA-values: 20, 50 or 100). Each erosive-abrasive cycle was followed by storage of the dentin samples in artificial saliva for 3h. After each 4 cycles, the samples were stored in artificial saliva for 15h. After 60 cycles, dentin loss was measured by profilometry and statistically analysed by ANOVA and linear regression analysis.Results: Dentin loss increased along with the RDA-value of the toothpaste slurries. The impact of the filament diameter on dentin loss was less evident compared to the RDA-value.However, toothbrushes with smaller filament stiffness caused higher dentin wear in all toothpaste slurry groups (RDA 20, 50 and 100) except for the paste-free control group (RDA 10).Conclusion: Abrasion of eroded dentin increased along with the RDA-value of the toothpaste slurry and with decreasing filament diameter of the toothbrush.3

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Section: Introductionmentioning

confidence: 99%

Abrasion of eroded dentin caused by toothpaste slurries of different abrasivity and toothbrushes of different filament diameter

Wiegand

Kuhn

Sener

et al. 2009

Journal of Dentistry

109

View full text Add to dashboard Cite

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“…Whilst brushing, a vertical upward load is exerted, which in turn can exert an effect on the oral surfaces. The force of the brush acting on the individual filament is proportional to the load exercised by the filament tip (5). Consequently, if the load is increased the danger of damage increases that the filament’s tip can penetrate into the mucosa.…”

Section: Introductionmentioning

confidence: 99%

“…They suddenly fold back laterally when a certain limit load is reached. When folding back, the rod suddenly gives way elastically (without breaking) and the load diminishes abruptly (5). A load higher than this fold‐back limit load can thus not be transferred onto the mucosa by the rod, via its tip.…”

Section: Introductionmentioning

confidence: 99%

Tapered toothbrush filaments in relation to gingival abrasion, removal of plaque and treatment of gingivitis

Versteeg

Piscaer

Rosema

et al. 2008

Int J Dental Hygiene

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“…The two spring constants are identical when same spring is used. It should be noted that the deformation of spring ( x) is a nonlinear because the stiffness of brush is, in general, empirically derived and deflection of brush is also affected by many factors such as bristle modulus, the number of tufts, and the trim length of bristles [11]. Therefore, value of the x has to be found by calculating the stiffness of brush empirically.…”

Section: Brush Force Controlmentioning

confidence: 99%

Operational effects of a mobile robot system for cleaning ventilation ducts

Jeong

Jeon

Park

2013

Proceedings of the 6th International Conference on PErvasive Technologies Related to Assistive Environments

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Eliminating various contaminants and particular matters accumulated inside the ventilation system of the confined space such as subway stations becomes key issue for conserving high air quality and green indoor environment. Accumulated various pollutants at inner duct surface can cause secondary air contamination and injure subway passengers' respiratory system and health. In fact, periodic duct cleaning works can improve indoor air quality, but cleaning entire ventilation system takes high cost and manpower. This study addresses the effectiveness of duct cleaning based on the developed autonomous duct cleaning robot. In particular, the new duct cleaning robot equipped with compliance rolling brushes enables to operate robot in a constant cleaning force to the target duct surface. Control method with the compliant device has also been analyzed. The proposed design of autonomous duct cleaning robot is expected to save the operating cost of subway ventilation system and sustain clean indoor air quality by providing easier and faster cleaning tools.

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A mathematical model for predicting toothbrush stiffness

Cited by 17 publications

References 7 publications

Abrasion of eroded dentin caused by toothpaste slurries of different abrasivity and toothbrushes of different filament diameter

Abrasion of eroded dentin caused by toothpaste slurries of different abrasivity and toothbrushes of different filament diameter

Tapered toothbrush filaments in relation to gingival abrasion, removal of plaque and treatment of gingivitis

Operational effects of a mobile robot system for cleaning ventilation ducts

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