Dentine hypersensitivity — effects of some proprietary mouthwashes on the dentine smear layer: a SEM study

Caries management by risk assessment (CAMBRA) and its effect on the surface roughness of various restorative materials

“…Literature that supports a direct association between a change in surface roughness of dental restorative materials and benzoic acid is scarce; however, studies are available that demonstrate potentially deleterious effects of acidic mouthwashes, organic acids, and acidic food and drinks on natural teeth by removing all or part of the dentin smear layer, thus leading to dentin hypersensitivity. 22,23 One study evaluated the permeability of dentin after a single exposure to acidic soft drinks with different acid compositions, one of which contained benzoic acid. All the drinks tested increased dentin permeability by removing the smear layer.…”

“…19,20 With the development of CAMBRA guidelines has come the application of many more anticaries regimens by dentists and their patients, for example, fluoride in the form of gels, pastes, and rinses; xylitol in the form of rinses, lozenges, and gum; chlorhexidine rinses; and sodium bicarbonate pastes and rinses. 22 With these topical products being increasingly used by patients to prevent caries, how they will affect the restorations existing in the mouth is important.…”

The erosive effects of some mouthrinses on enamel

“…Moreover, effects in vitro are magnified many times over compared to effects in situ (West et al 1999). With the very limited data on erosion of dental tissues by mouthrinses entirely drawn from laboratory studies (Addy et al 1991), it was felt unsafe to assume that low pH mouthrinses would necessarily behave like soft drinks. In the event the present studies proved this concern well founded since the study in vitro did not correlate with the study in situ, unlike studies with soft drinks (Hughes et al 1999a, b, West et al 1999).…”

“…Indeed, considerable adverse media attention in the UK was directed towards mouthrinses with pH values below 5.5. Evidence that mouthrinses do cause erosion, at least of dentine and in vitro is available (Addy et al 1991, West et al 1998, 1999, Hughes et al 1999a, b). Unfortunately and unlike for soft drinks, there are no data derived from controlled clinical investigations of the dental erosive effects of mouthrinses.…”

Resistência de Cimentos Resinosos Empregados na Fixação de Retentores Intra-radiculares à Passagem de Fluidos que Atravessam a Dentina

“…Diante do exposto, quando a denti na radicular não está recoberta pelo cemento, ou quando esse é removido em procedimentos como raspagem, aplainamento radiculares, plasti as radiculares, dentre outros procedimentos, pode ocorrer o ingresso de produtos indesejáveis vindos do meio externo do dente 10 , no canal radicular, que tende a aumentar com alguns líquidos roti neiramente ingeridos na dieta e substâncias uti lizadas na higiene oral [11][12][13][14] .…”