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Dental Treatment 2018
Dentistry and Craniofacial Research
ISSN: 2576-392X
Page 72
September 10-11, 2018
Zurich, Switzerland
25
th
International Conference on
Dental Treatment
Background:
White spot lesion (WSL) represents the early
manifestation of the dental caries and can be treated by a non-
invasive management. The white spot lesion is still the most
complicated dilemma facing orthodontists during orthodontic
treatment using fixed appliances. Light cured bioactive glass
varnishes releasing calcium, phosphate, strontium and fluoride
for controlled remineralisation exhibit promise for prevention of
WSL.
Objectives:
To evaluate
in vitro
the effectiveness of application of
novel BAG varnish in the protection of enamel surfaces against
acid challenge.
Materials and Methods:
A total of 6 enamel blocks were selected
and distributed randomly into two groups (n = 3). Group A:
Clinpro
TM
white varnish (3M ESPE TM) was used to coat the
enamel surface and group B: light cured BAG varnish which
consists of BAG (35% SiO
2
, 45% CaCO
3
, 7.5% Na
2
CO
3
, 6% P
2
O
5
, 6%
SrF
2
) mixed with resin (70/30 UDMA/HEMA, 0.6% EDMAB, 0.3%
CQ, and 1% 4META) with glass: resin ratio of 60:40 was used.
The enamel blocks were covered with two layers of acid-resistant
nail varnish except the exposed enamel surface. Each three
enamel blocks were mounted vertically in small plastic tubes and
scanned by XMT before and after immersion in 10ml artificial
saliva demineralising buffer (pH = 4) over two time periods 24
hours and 96 hours at 37ºC.
Result:
The evaluation of XMT slices demonstrated the ability
of the BAG varnish to prevent the development of WSL after
immersion in AS pH4 for 24 hours and 96 hours. The line profiles
have confirmed the protective efficacy of BAG varnish in reducing
the acid demineralisation.
Conclusions:
This ex-vivo acid challenge study illustrates that
the novel BAG varnishes can be used effectively to prevent the
WSL and protect the teeth from low pH environment in oral
cavity. Hence, the novel BAG varnish has the potential to prevent
demineralisation and caries.
t.j.a.al-khafaji@qmul.ac.ukAn x-ray microtomography measurement of a novel bioactive
glass varnish in prevention of white spot lesions. (A
comparative acid challenge study)
Thaer Jaber Al-Khafaji
1
, Ferranti Wong
2
, Padhraig S. Fleming
2
and
Robert Hill
1
1
Department of Dental Physical Science, London
2
Barts and the London Dental School, School of Medicine and Dentistry, London
J Dent Craniofac Res 2018, Volume 3
DOI: 10.21767/2576-392X-C3-009