An in-situ pilot study to investigate the native clinical resistance of enamel to erosion

To investigate the differences in susceptibility of the surface of native and polished enamel to dietary erosion using an in-situ model. Thirty healthy volunteers (n = 10 per group) wore mandibular appliances containing 2 native and 2 polished enamel samples for 30 min after which, the samples were...

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Bibliographic Details
Published in:Journal of dentistry 2018-03, Vol.70, p.124-128
Main Authors: Mullan, Francesca, Austin, Rupert S., Parkinson, Charles R., Bartlett, David W.
Format: Article
Language:English
Subjects:
Adult
Citric Acid - adverse effects
Dental enamel
Dental Enamel - diagnostic imaging
Dental Enamel - drug effects
Dental Enamel - pathology
Dental Pellicle
Dental Polishing - adverse effects
Dentistry
Enamel
Erosion resistance
Fluorides, Topical
Fruit and Vegetable Juices - adverse effects
Fruit juices
Hardness
Humans
Middle Aged
Orthodontics
Pellicle
Pilot Projects
Profilometry
Saliva
Studies
Surface Properties
Surface roughness
Teeth
Time Factors
Tooth Erosion - diagnostic imaging
Tooth Erosion - pathology
Tooth wear
Young Adult
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Summary:To investigate the differences in susceptibility of the surface of native and polished enamel to dietary erosion using an in-situ model. Thirty healthy volunteers (n = 10 per group) wore mandibular appliances containing 2 native and 2 polished enamel samples for 30 min after which, the samples were exposed to either an ex-vivo or in-vivo immersion in orange juice for 5, 10 or 15 min and the cycle repeated twice with an hour’s interval between them. Samples were scanned with a non-contacting laser profilometer and surface roughness was extracted from the data, together with step height and microhardness change on the polished enamel samples. All volunteers completed the study. For native enamel there were no statistical difference between baseline roughness values versus post erosion. Polished enamel significantly increased mean (SD) Sa roughness from baseline for each group resulting in roughness change of 0.04 (0.03), 0.06 (0.04), 0.04 (0.03), 0.06 (0.03), 0.08 (0.05) and 0.09 (0.05) μm respectively. With statistical differences between roughness change 45 min in-vivo versus 45 min ex-vivo (p 
ISSN:0300-5712
1879-176X
DOI:10.1016/j.jdent.2018.01.005