Effects of dentifrice containing 1,500 ppm F (NaF) on dental erosion

Seong-Soog Jeong; Ki-Ho Chung

doi:10.11149/jkaoh.2017.41.3.208

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Jeong and Chung: Effects of dentifrice containing 1,500 ppm F (NaF) on dental erosion

Original Article

J Korean Acad Oral Health 2017;41(3):208-213.

Published online: 15 September 2017

DOI: https://doi.org/10.11149/jkaoh.2017.41.3.208

Effects of dentifrice containing 1,500 ppm F (NaF) on dental erosion

Seong-Soog Jeong^1,², Ki-Ho Chung^3,

¹Department of Preventive & Public Health Dentistry, Chonnam National University School of Dentistry, Gwangju, Korea

²Dental Science Research Institute, Chonnam National University School of Dentistry, Gwangju, Korea

³Department of Preventive Dentistry and Public Oral Health, Yonsei University College of Dentistry, Seoul, Korea

Corresponding Author: Ki-Ho Chung Department of Preventive Dentistry and Public Oral Health, Yonsei University College of Dentistry, 50 Yonsei-ro, Seodaemun-gu, Seoul 03722, Korea Tel: +82-2-2228-3070 Fax: +82-2-392-2926 E-mail: yspd8050@naver.com

Received 12 June 2017 Revised 25 July 2017 Accepted 3 August 2017

This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Objectives

The purpose of this study was to evaluate the effect of a dentifrice containing 1,500 ppm F (NaF) and 2% bamboo salt on dental erosion caused by ingestion of acidic beverages.

Methods

Specimens of extracted bovine teeth enamel were embedded in a resin and polished. Experimental specimens were subjected to one of the six treatments (n=10 per treatment group): the experimental group consisted of 1,500 ppm F (NaF)+2% bamboo salt; 1,500 ppm F (NaF); 1,000 ppm F (NaF)+2% bamboo salt; 1,000 ppm F (NaF); free fluoride+2% bamboo salt; and free fluoride. The specimens were exposed to the experimental dentifrice, an acidic beverage, and artificial saliva. The treated specimens were analyzed using a Vickers surface hardness test and scanning electron microscopy (SEM). Surface hardness and SEM were compared before and after the chemical pH cycling sequences for 12 days.

Results

Group 1 (1,500 ppm F+2% bamboo salt) showed the highest surface hardness, followed by group 2 (1,500 ppm F), group 3 (1,000 ppm F+2% bamboo salt), group 4 (1,000 ppm F), group 5 (free fluoride+2% bamboo salt), and group 6 (free fluoride), in that order. Upon observing the surface by SEM, when bamboo salt was used and when the NaF concentration was higher, the enamel was denser and the surface was more highly remineralized.

Conclusions

The use of a higher concentration of NaF and bamboo salt resulted in a higher preventive effect on tooth erosive potential. The addition of bamboo salt to dentifrice containing a high concentration of NaF can contribute to preventing dental erosion.

Keywords: Bamboo salt, Dental erosion, NaF, Remineralization

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Fig. 1.

SEM images of bovine teeth surface after treatment (A: 1,500 ppm F (NaF)+2% BS, B: 1,500 ppm F (NaF), C: 1,000 ppm F (NaF)+2% BS, D: 1,000 ppm F (NaF), E: free fluoride+2% BS, F: free fluoride, ×50,000).

Table 1.

Test groups for the study

Group	Fluoride	Bamboo salt	Abrasive
1	1,500 ppm F (NaF)	2%	Silica
2	1,500 ppm F (NaF)	-
3	1,000 ppm F (NaF)	2%
4	1,000 ppm F (NaF)	-
5	Free	2%
6	Free	-

Table 2.

Time table for treatment solution and artificial saliva cycle for the period of 12 days

Time	Treatment
09:00-09:03	Dentifrice Treatment
09:03-10:00	Artificial Saliva*
10:00-10:30	Acidic Beverage
10:30-12:00	Artificial Saliva*
12:00-12:03	Dentifrice Treatment
12:03-13:00	Artificial Saliva*
13:00-13:30	Acidic Beverage
13:30-15:00	Artificial Saliva*
15:00-15:03	Dentifrice Treatment
15:03-Next morning	Artificial Saliva*

*The artificial saliva used in this study contained; 0.22% Gastric mucin, 0.0381% NaCl, 0.0213% CaCl₂·2H₂O, 0.0738% KH₂PO₄, 0.1114% KCl.

Table 3.

Effects of the different dentifrices on lesion surface hardness according to chemical cycling methods (unit: VHN)

Group	N	Time (day)		Difference* (△VHN)
Group	N	0	12	Difference* (△VHN)
1	10	289.93±6.65	228.38±9.69	61.54±17.45^a
2	10	289.98±6.60	218.24±11.29	71.07±16.11^a,b
3	10	290.26±6.37	206.00±11.26	84.26±13.66^b,c
4	10	290.27±4.95	197.71±8.91	92.56±15.99^c,d
5	10	290.21±6.13	189.83±4.92	100.38±10.14^d,e
6	10	290.16±5.20	179.97±11.94	110.18±14.34^e

Values are mean±SD. *P<0.05, by one-way ANOVA.

^a,b,c,d,e The same letter indicates no significant difference by Duncan's test at a=0.05.

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