Effect of ammonium hexafluorosilicate application for arresting caries treatment on demineralized primary tooth enamel.

Abstract:

:Ammonium hexafluorosilicate (AHF) has been applied to arrest caries without discoloration. The purpose of this study was to observe structural and elemental changes of demineralized and AHF applied primary tooth enamel. Enamel from the labial surface of 20 primary canines was divided into an unground side and ground side at the center of the tooth, and demineralized with 35% phosphoric acid for 6 min. The teeth were divided into 4 groups according to a 3-min application of AHF and 1 week of soaking in artificial saliva, as follows: group A (neither AHF nor saliva), group B (only saliva), group C (only AHF), and group D (AHF and saliva), and then subdivided according to whether the enamel was ground or unground. Specimens were analyzed with scanning electron microscopy (SEM) and energy dispersive X-ray spectrometry (EDS). The data were statistically analyzed using ANOVA and Fisher's PLSD test at α = 0.05. In groups A and B, prism structures were seen, however, in groups C and D, enamel surfaces were covered with spherical particles. Ca/P ratio was significantly higher in groups C and D than in groups A and B. There was no significant difference between ground and unground enamel in the content of any element. The values for F, Na, Mg and Si persents and Ca/P ratio were significantly higher for the enamel surface than for points 10-30 µm beneath the surface. Results of this study suggest the possibility that AHF treatment arrests caries, although further study will be required to confirm this result.

journal_name

J Oral Sci

journal_title

Journal of oral science

authors

Hosoya Y,Tadokoro K,Otani H,Hidaka K,Inoue T,Miyazaki M,Tay FR

doi

10.2334/josnusd.55.115

subject

Has Abstract

pub_date

2013-01-01 00:00:00

pages

115-21

issue

2

eissn

1343-4934

issn

1880-4926

pii

DN/JST.JSTAGE/josnusd/55.115

journal_volume

55

pub_type

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