The effect of different salivary calcium concentrations on the erosion protection conferred by the salivary pellicle.

Baumann, Tommy; Bereiter, Riccarda; Lussi, Adrian; Saads Carvalho, Thiago (2017). The effect of different salivary calcium concentrations on the erosion protection conferred by the salivary pellicle. Scientific Reports, 7(1), p. 12999. Nature Publishing Group 10.1038/s41598-017-13367-3

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Different proportions of mineral ions in saliva can influence the protective effect the salivary pellicle provides against dental erosion. To investigate the effect of different calcium concentrations in human saliva on the protection against enamel erosion, enamel specimens were divided into 8 treatment groups: humid chamber (Ctrl); whole mouth stimulated human saliva (HS); artificial saliva containing different calcium concentrations (ASlow, ASmedium, AShigh); and dialysed human saliva containing different calcium concentrations (DSlow, DSmedium, DShigh). The specimens underwent 4 cycles of incubation in the treatment group followed by an erosive challenge. Surface hardness and calcium release were measured during the cycling process. All DS groups exhibited significantly higher enamel surface softening than HS and the corresponding AS groups. Among the DS groups, the surface softening was significantly higher in DSlow than in DShigh. No significant differences were found within the AS or DS groups regarding calcium release. The results of this study indicated that erosion protection conferred by saliva depends on an interplay between salivary proteins and ions. While both proteins and ions have a positive effect on their own, the combination of the two can lead to different degrees of protection or even negative effects, depending on the relative concentrations.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Preventive, Restorative and Pediatric Dentistry
04 Faculty of Medicine > School of Dental Medicine > School of Dental Medicine, Restorative Dentistry, Research
04 Faculty of Medicine > School of Dental Medicine

UniBE Contributor:

Baumann, Tommy; Bereiter, Riccarda; Lussi, Adrian and Saads Carvalho, Thiago

Subjects:

600 Technology > 610 Medicine & health
500 Science > 570 Life sciences; biology

ISSN:

2045-2322

Publisher:

Nature Publishing Group

Language:

English

Submitter:

Tommy Baumann

Date Deposited:

17 Nov 2017 14:00

Last Modified:

19 Nov 2017 02:19

Publisher DOI:

10.1038/s41598-017-13367-3

PubMed ID:

29021538

BORIS DOI:

10.7892/boris.106761

URI:

https://boris.unibe.ch/id/eprint/106761

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