...James R. Fernando; Peiyan Shen; Glenn D. Walker; Yi Yuan; David P. Stanton; Coralie Reynolds; Eric C. Reynolds Remineralisation of demineralised enamel subsurface lesions can be enhanced by pretreatment of the lesions with base (NaOH). The aim of this study was to test the effect of intralesion pH...

...) and root dentin (RD), and investigate the involvement of dissolved components in bacteria-induced pH changes using a model of tooth/bacteria interface. An experimental apparatus forming a well was made of polymethyl methacrylate, and a bovine tooth (CE or RD) specimen was fixed at the bottom of the well...

...Alaa A. Alkhateeb; Lloyd A. Mancl; Richard B. Presland; Marilynn L. Rothen; Donald L. Chi Salivary flow rate, pH, and buffering capacity are associated with dental caries, but studies from the cystic fibrosis (CF) literature are inconclusive regarding these salivary factors and caries. The aim...

...Xuelian Huang; Renee M. Schulte; Robert A. Burne; Marcelle M. Nascimento A selected group of oral bacteria commonly associated with dental health is capable of producing alkali via the arginine deiminase system (ADS), which has a profound impact on the pH of human oral biofilms. An increased risk...

...A. Lussi; M. von Salis-Marincek; C. Ganss; E. Hellwig; Z. Cheaib; T. Jaeggi The aim of this study was to compare tooth surface pH after drinking orange juice or water in 39 patients with dental erosion and in 17 controls. The following investigations were carried out: measurement of pH values...

...M.F. Correia; L.M.A. Tenuta; A.A. Del Bel Cury; J.A. Cury To test the effect of distinct solubilities of dentine and enamel on mineral ion concentration in the biofilm fluid during a sugar-induced pH drop, dental biofilms were formed in situ for 4 days on acrylic (control), dentine or enamel...

...-exposure) models can be used for screening products regarding their erosive potential, while more elaborate pH cycling models can be used to simulate erosion in vivo. However, in vitro models provide limited information on intra-oral erosion. In situ models allow the effect of an erosive challenge...

...F. Lippert; A. Butler; R.J.M. Lynch The present study investigated de- and remineralization in enamel lesions under plaque fluid (PF)-like conditions using quantitative light-induced fluorescence (QLF). Preformed lesions were exposed to partially saturated lactic acid solutions, varying in pH...

... to erosion have not been previously investigated. Chewing-gum-stimulated salivary flow rate, pH, bicarbonate concentration and viscosity were compared between two groups of vomiting bulimics and with 10 healthy controls. One bulimic group (n = 9) had pathological tooth wear present according to the criteria...

...A. Millward; L. Shaw; E. Harrington; A.J. Smith Use of a splint-mounted flexible pH electrode has allowed reliable continuous monitoring of pH at the surface of the dentition whilst still enabling subjects to drink normally. pH was monitored at the palatal upper left central incisor and upper right...

..., the enrichment of Streptococcus mutans , observed following glucose pulses in the absence of pH control, was prevented by xylitol. In contrast, sorbitol had the opposite effects and S. mutans increased in proportion. The study provides evidence for a mechanism by which xylitol could affect the ecology of dental...

...H. Almqvist; F. Lagerlöf To study the effect of fluoride on de- and remineralization of root hard tissue, an automatic pH-cycling caries model, simulating Stephan curves, was used for 21 days. From each of 13 unexposed human roots, four cementum/dentin blocks were prepared. Four experiments were...

...A. Küseler; V. Baelum; O. Fejerskov; J. Heidmann The accuracy and precision of 12 different microelectrodes were assessed through a series of pH recordings of buffer solutions with known pH values. Some electrodes were quite accurate, yielding an average deviation of recordings from true values...

... to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements. pH Powder: liquid ratio Surface area c. McKnight-Hanesa G.M. Whitfordb Departments of a Pediatric Dentistry and » Oral Biology, School of Dentistry, Medical College...

...A.A. Scheie; O. Fejerskov; P. Lingström; D. Birkhed; F. Manji The aim of this study was to assess the applicability of palladium touch micro-electrodes, connected to battery-run pH meters, for in vivo plaque pH measurements in children. The pH was assessed in 20 7-year-old and in 19 14-year-old...

...P.C. Lammers; J.M.P.M. Borggreven; F.C.M. Driessens Subsurface lesions in bovine enamel slices were remineralized. The remineralization solutions contained either 0.03,0.3, or 1.0 ppm fluoride at either pH 5.5 or 6.8. The amount of remineralization was determined after periods of up to 610 h, using...

... generate identical pH versus time curves over extended periods of time. To test the model demineralization studies on cementum/dentin were performed. Cementum/dentin blocks were repeatedly subjected to de- and remineralizing solutions delivered by a computerized pump system connected to a pH-meter...

...S. Kalfas; D. Birkhed The pH changes and the amounts of the metabolic end products lactate, formate, acetate and ethanol were studied in suspensions of dental plaque material. The suspensions were incubated with sorbitol or glucose for 30–80 min, in the presence or absence of air. The acid...

...Anja-Riitta Luoma; J. Räisänen The effects of F+ Mg additives on the F varnish-treated bovine enamel underneath a fermenting Streptococcus mutans layer was investigated. The enamel slabs with the streptococcal layer were incubated at 37 °C for 18 h. The final pH after the fermentation on the highly...

...D. Birkhed The concentration of fructose, glucose and sucrose, the pH and the titratable amount of acid were analyzed in the following groups of soft drinks (8–11 samples per group): (1) fruit juices, (2) fruit drinks, (3) carbonated beverages and (4) sport drinks. Moreover, the effect...