Abstract：
:Enamel blocks bearing artificial caries are used in intra-oral appliances for cariogenicity tests. These blocks are often sterilised to prevent the possibility of cross-infection via this route. This study therefore aimed to determine the effect of sterilisation methods on the structural integrity of artificial enamel caries used for intra-oral cariogenicity tests. Four experimental groups were devised. Ten bovine incisors were used in each group. Artificial caries was produced in each tooth which was subsequently cut into two halves. One half of each tooth was reserved as control while the other was sterilised. The four groups were subjected to respective sterilisation methods: gamma irradiation (approximately equal to 25 KGy), steam autoclaving (121 degrees C for 15 min), sodium hypochlorite (12% w/v for 24 h) and povidone-iodine (7.5% w/v for 24 h). The control and sterilised specimens in each group were examined for microbial growth after incubation in nutrient broth for up to 7 days at 37 degrees C under aerobic and anaerobic conditions. Mineral loss and lesion depth were quantified from microradiographs of sections from control and sterilised specimens using transverse microradiography. Data were analysed statistically by paired Student's t-test. Microbial growth was observed only in control specimens. Gamma irradiation and NaOCL caused cream discolouration and bleaching of the enamel surface, respectively. Autoclaving, sodium hypochlorite and povidone-iodine resulted in further demineralisation of the lesions. The four sterilisation methods were all effective sterilants for artificial caries. However, gamma irradiation appears the most acceptable method considering the more adverse effects of the other methods with regards to cariogenicity tests.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Amaecha BT,Higham SM,Edgar WMdoi
10.1016/s0300-5712(98)00064-5keywords:
subject
Has Abstractpub_date
1999-05-01 00:00:00pages
313-6issue
4eissn
0300-5712issn
1879-176Xpii
S0300-5712(98)00064-5journal_volume
27pub_type
杂志文章abstract：OBJECTIVES:To evaluate the effect of the addition of epigallocatechin-3-gallate (EGCG) on the antibacterial and physical properties of glass ionomer cement (GIC). METHODS:A conventional GIC, Fuji IX, was used as a control. EGCG was incorporated into GIC at 0.1% (w/w) and used as the experimental group. Chlorhexidine (...
journal_title：Journal of dentistry
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doi：10.1016/j.jdent.2013.07.014
更新日期：2013-10-01 00:00:00
abstract：:Silver-palladium alloys have been endorsed on clinical grounds as substitutes for gold alloys in posts and cores. However, carbon absorption during heating and casting can adversely affect the mechanical properties of silver-palladium alloys. In this study the tensile characteristics of endodontic posts cast in silver...
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doi：10.1016/0300-5712(89)90049-3
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abstract：OBJECTIVE:The aim of this study was to characterize the surface of Y-TZP after abrasion with various airborne particles. METHODS:The Y-TZP blanks were cut into 44 discs and sintered according to the manufacturer's instructions. The specimens were treated as follows: (a) control specimens, (b) abraded with 50μm alumina...
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pub_type： 杂志文章
doi：10.1016/j.jdent.2013.07.006
更新日期：2013-10-01 00:00:00
abstract：OBJECTIVE:The aim of this study is to illustrate the graded proper properties of enamel from the outer (near occlusal surface) to the inner region (near enamel-dentine junction) in a cross-sectioned surface and discuss how natural design achieve the graded functions. METHODS:Nanoindentation, Raman spectroscopes, and S...
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doi：10.1016/j.jdent.2009.03.019
更新日期：2009-08-01 00:00:00
abstract：OBJECTIVE:This randomized controlled trial compared the survival of glass fibre and cast metal dental posts used to restore endodontically treated teeth with no remaining coronal wall. METHODS:Fifty-four participants (45 women) and 72 teeth were evaluated during a follow-up period of up to 3 years. Teeth were randomly...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
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更新日期：2014-05-01 00:00:00
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doi：10.1016/j.jdent.2013.07.004
更新日期：2013-09-01 00:00:00
abstract：OBJECTIVES:Mutans streptococci and Lactobacilli on impressions of teeth and caries tests were used to identify caries prone subjects. METHODS:Twenty-seven dental students were examined for caries initially and after 4 years. At the initial examination plaque index; saliva flow, buffering capacity and lysozyme; sucrose...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2008.07.004
更新日期：2008-11-01 00:00:00
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pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2005.02.010
更新日期：2006-01-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jdent.2018.01.010
更新日期：2018-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/s0300-5712(00)00013-0
更新日期：2000-08-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0300-5712(93)90109-4
更新日期：1993-10-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2008.02.009
更新日期：2008-05-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jdent.2011.03.003
更新日期：2011-07-01 00:00:00
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pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2014.05.015
更新日期：2015-02-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(89)90168-1
更新日期：1989-10-01 00:00:00
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doi：10.1016/j.jdent.2013.06.011
更新日期：2013-09-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/0300-5712(93)90136-e
更新日期：1993-08-01 00:00:00
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pub_type： 杂志文章,评审
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更新日期：2012-07-01 00:00:00
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更新日期：2018-09-01 00:00:00
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pub_type： 杂志文章,meta分析,评审
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更新日期：2016-05-01 00:00:00
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doi：10.1016/j.jdent.2006.10.003
更新日期：2007-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1016/j.jdent.2018.12.001
更新日期：2019-02-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.06.002
更新日期：2013-09-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to determine the dentine fluoride uptake from three fluoride-containing composites (FluorEver, FluoroCore and Pertac-Hybrid) and to investigate their ability to affect the resistance of dentine to an artificial caries challenge. METHODS:Three dentine slabs were prepared from ea...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(96)00045-0
更新日期：1997-05-01 00:00:00
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pub_type： 杂志文章
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更新日期：2020-03-01 00:00:00
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journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2004.07.005
更新日期：2004-11-01 00:00:00
abstract：OBJECTIVE:To test the hypothesis, derived from a previous short-term (7-day) assessment, that the absence of conventional pulp protection is not responsible for long-term pulp complications of composite resin restorations with self-etching adhesives. METHODS:All 150 patients who received the restorations with self-etc...
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pub_type： 杂志文章
doi：10.1016/j.jdent.2007.02.005
更新日期：2007-06-01 00:00:00
abstract：INTRODUCTION:C. tropicalis and C. krusei have emerged as virulent species causing oral infections. Both have developed resistance to commonly prescribed azole antifungal agents. OBJECTIVE:The study aimed to determine the effect of mouth rinses containing chlorhexidine digluconate (CHX), cetylpyridinium chloride (CPC) ...
journal_title：Journal of dentistry
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更新日期：2012-07-01 00:00:00
