Abstract：
OBJECTIVE:To evaluate the effect of compounds of Galla chinensis on the remineralisation of initial enamel carious lesions in vitro. METHODS:Sixty bovine enamel blocks with early lesions were prepared and randomly divided into six treatment groups. The lesions were subjected to a pH-cycling regime for 12 days. Each daily cycle included 4x1min applications with one of six treatments; 1000ppm F aq. (as NaF, positive control); deionized water (negative control); or 4000ppm aqueous solutions of four G. chinensis extracts (GCEs); GCE, GCE-B, GCE-B1, or GCE-B2. Surface enamel microhardness was measured on the enamel blocks before and after demineralisation, and after pH-cycling, and percentage surface microhardness recovery (%SMHR) was calculated. The enamel specimens were then sectioned (thickness ca. 80microm) and examined by polarized light microscopy. RESULTS:All samples rehardened significantly compared to baseline. Fluoride had a significantly greater effect than all other treatments. In the GCEs groups, %SMHR was significantly greater than DDW for the GCE, GCE-B and GCE-B1 groups. There was no significant difference between the GCE-B2 group and DDW. Polarized light microscopy showed that the thickness of the surface layer increased obviously in all specimens including NaF group, GCE group, GCE-B group and GCE-B1 group. Negative birefringent band appeared in the lesions body and the depth of the lesions was obviously reduced. CONCLUSION:The present study has demonstrated the potential of three GCEs (GCE, GCE-B and GCE-B1) to effect net rehardening of artificial carious lesions under dynamic pH-cyclic conditions.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Chu JP,Li JY,Hao YQ,Zhou XDdoi
10.1016/j.jdent.2006.11.007subject
Has Abstractpub_date
2007-05-01 00:00:00pages
383-7issue
5eissn
0300-5712issn
1879-176Xpii
S0300-5712(06)00207-7journal_volume
35pub_type
杂志文章abstract：OBJECTIVES:To validate a new questionnaire for evaluating the 'Oral aesthetic-related quality of life (OARQoL)' of prosthetically restored patients. 'OARQoL' assesses the impact of the self-perceived dental aesthetics on patients' well-being. METHODS:The 'Quality of Life associated with Dental Aesthetic Satisfaction (...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2015.08.010
更新日期：2015-11-01 00:00:00
abstract：OBJECTIVES:A priority research area in minimal intervention dentistry is the characterization of the early stages of dental erosion. The aim of this in vitro study was to assess the effect of short, repetitive erosive challenges to human enamel over 2 min at pH 1.5 and 3.0 under conditions simulating gastric regurgitat...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2014.06.011
更新日期：2014-11-01 00:00:00
abstract：:The effects of gamma radiation at therapeutic dosage levels on the physical properties of three anterior (two light-cured and one autocure) composites and a light-cured posterior composite were studied. Gamma radiation had no effect on the autocured composite but had varied effects on the light-cured systems. The diam...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(89)90071-7
更新日期：1989-08-01 00:00:00
abstract：OBJECTIVES:During laboratory fabrication procedures and/or clinical adjustments, pressable materials: IPS Empress and Empress 2, may be ground, polished or sandblasted. These treatments may affect their strength by introducing microscopic flaws and defects. This study investigates the effect of these procedures on the ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2003.08.006
更新日期：2004-02-01 00:00:00
abstract：OBJECTIVES:To evaluate the effect of addition of zinc oxide and copper nanoparticles (ZnO/CuNp) into universal adhesives, on antimicrobial activity (AMA), cytotoxicity (CTX), water sorption (WS) and solubility (SO), microhardness (MH) and in vitro degree of conversion (DC), as well as resin-dentin microtensile bond str...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2019.01.012
更新日期：2019-03-01 00:00:00
abstract：OBJECTIVES:To measure the tooth whitening effects delivered immediately after brushing with silica-based toothpastes containing blue covarine in vitro and in vivo. METHODS:Salivary pellicle coated human extracted teeth were brushed with either a slurry of a toothpaste containing blue covarine (BC), a formulation conta...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.10.014
更新日期：2017-12-01 00:00:00
abstract：OBJECTIVES:Wear of dental hard tissues, e.g. dental erosion, is reported to be a growing problem. A non-destructive measurement of enamel layer thickness would provide the opportunity for both early diagnosis, and longitudinal measurement of progressive enamel loss. It was the aim of this study to investigate the poten...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(99)00063-9
更新日期：2000-03-01 00:00:00
abstract：OBJECTIVES:To compare the accuracies of 4 laboratory scanners using a new custom-made block for complete-arch implant rehabilitation. MATERIALS AND METHODS:A block comprised 4 cylinders, with 2 in the anterior (0° angulation) and 2 in the posterior region (45° distal angulation) (Experimental group) and a standard blo...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2020.103476
更新日期：2020-11-01 00:00:00
abstract：OBJECTIVES:The aim of the current study was to evaluate the effect of 2% CHX and 2% CHX-methacrylate compared to the resin-dentin bonds created by a two-step etch-and-rinse adhesive system after 24h, 6min and 12min. METHODS:Microtensile bond strengths and interfacial nanoleakage within resin-dentin interfaces created ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2015.11.002
更新日期：2016-02-01 00:00:00
abstract：:A significant correlation was found between the number of mutans streptococci in saliva and the proportional distribution of these microorganisms in pooled plaque from the margins of all restorations. At high salivary numbers there was a tendency towards a higher porportion of mutans streptococci in plaque from the ma...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(92)90130-5
更新日期：1992-06-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to evaluate the effect of sealant placement on the detection of caries by a fluorescent camera (FC), the Spectra caries detector. MATERIALS AND METHODS:In a laboratory study, FC images and readings were obtained from 31 extracted teeth, before and following application of clear seal...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.05.005
更新日期：2013-07-01 00:00:00
abstract：OBJECTIVES:The aim of this research was to evaluate the effect of titanium tetrafluoride on dentine permeability in comparison with sodium fluoride and acidulated phosphate fluoride to determine their contribution to acid resistance of dentine. METHODS:Thirty-two dentine discs were prepared from extracted mandibular m...
journal_title：Journal of dentistry
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0300-5712(99)00029-9
更新日期：1999-09-01 00:00:00
abstract：OBJECTIVES:Acrylic resins, used in the manufacturing of different types of intra-oral prostheses, are vulnerable to colonisation by microorganisms which potentially endanger the general health of the prostheses, wearers. The aim of this study was to investigate the influence of a novel coating (Parylene) on surface rou...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2013.06.011
更新日期：2013-09-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to identify factors influencing the selection of restorative materials. METHODS:In 1992, a random sample of Finnish dentists working in the public and private health care sectors were asked to provide information on restorative treatments during a given period. The study material co...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(95)00070-4
更新日期：1996-07-01 00:00:00
abstract：OBJECTIVES:To monitor zirconia-ceramic and metal-ceramic posterior FDPs with respect to survival and technical/biological complication rates. MATERIALS AND METHODS:Fifty-eight patients received 76 3- to 5-unit posterior FDPs. The sites were randomly assigned to 40 zirconia-based (ZC) and 36 metal-based (MC) FDPs. FDPs...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2018.05.015
更新日期：2018-09-01 00:00:00
abstract：OBJECTIVES:The light intensity of curing lights used in private dental offices was measured using commercial curing and heat radiometers and related to uniformity of cure depth of standardized composite specimens. METHODS:The intensity of 130 curing light from 107 dental offices was measured with curing and heat radio...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(98)00052-9
更新日期：1999-03-01 00:00:00
abstract：:Some laboratory tests of impression material accuracy mimic the clinical situation (simulatory) while others attempt to quantify a material's individual properties. This review concentrates on simulatory testing and aims to give a classification of the numerous tests available. Measurements can be made of the impressi...
journal_title：Journal of dentistry
pub_type： 杂志文章,评审
doi：10.1016/0300-5712(92)90117-u
更新日期：1992-04-01 00:00:00
abstract：OBJECTIVES:This study aimed to evaluate the effect of low-fluoride toothpastes with calcium glycerophosphate (CaGP) on enamel remineralization in situ. METHODS:Volunteers (n=10) wore palatal devices holding four bovine enamel blocks. The treatments involved 5 experimental phases of 3 days each according to the followi...
journal_title：Journal of dentistry
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.jdent.2014.09.001
更新日期：2014-12-01 00:00:00
abstract：:The Annual Conference of the British Association of Teachers of Conservative Dentistry (BATCD) was held in Sheffield on 16 and 17 September 1993. The main programme addressed educational issues in three areas: the undergraduate/vocational-trainee interface, the teaching of implants in the undergraduate curriculum, and...
journal_title：Journal of dentistry
pub_type：
doi：10.1016/0300-5712(94)90069-8
更新日期：1994-10-01 00:00:00
abstract：OBJECTIVES:All-ceramic crowns have become increasingly used also in the posterior regions, but there are only few studies documenting the clinical outcome of these restorations. The aim was therefore to present the 3-year outcome of zirconia (NobelProcera) single crowns. METHODS:All patients treated with porcelain-ven...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2009.06.002
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVE:The shear bond strengths of an autopolymerizing denture base resin to cast Ti-6Al-7Nb and Co-Cr alloys using three metal conditioners were investigated. METHODS:Ti-6Al-7Nb alloy and Co-Cr alloy discs were cast. The disc surfaces were air-abraded with 50 microm alumina particles and treated with three metal c...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2005.05.002
更新日期：2006-02-01 00:00:00
abstract：:A 99.5 per cent pure aluminium step-wedge served as reference for evaluating the radiopacity of 55 anterior and posterior composites. The radiopacity of all materials evaluated was compared with the radiopacity of human enamel and human dentine of equivalent sample thickness. Seventeen composites exhibited a radiopaci...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(91)90056-5
更新日期：1991-12-01 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...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(89)90049-3
更新日期：1989-12-01 00:00:00
abstract：OBJECTIVE:To compare the permeability of the occlusal and the cervical dentinal regions within the same tooth, which represent the bottom of Class I and V cavities, respectively, with two different compositions of perfusion fluid, in vitro. METHODS:An occlusal and a buccal disc were cut from each extracted third molar...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/s0300-5712(02)00005-2
更新日期：2002-02-01 00:00:00
abstract：:Meta-analysis is a formalized method of combining results of different studies to provide conclusions about the effectiveness of a treatment modality. The aims of this study were to use meta-analysis to determine the clinical performance of posterior composite restorations using the assessment criteria of the USPHS gu...
journal_title：Journal of dentistry
pub_type： 杂志文章,meta分析
doi：10.1016/0300-5712(94)90143-0
更新日期：1994-02-01 00:00:00
abstract：OBJECTIVES:Firstly, to evaluate the in vitro anti-erosion efficacy of a new mouthrinse formulation containing 450 ppm fluoride using profilometry and microindentation. Secondly, to compare fluoride uptake by erosive lesions from two mouthrinses containing different fluoride sources using dynamic secondary ion mass spec...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/S0300-5712(11)70004-5
更新日期：2010-11-01 00:00:00
abstract：OBJECTIVES:This study was performed to determine the compositions of commercial temporary restorative resins and to evaluate the leachability of plasticizer and residual monomer from them. METHODS:The chemicals in four commercial temporary restorative resins (Dura Seal, Fit Seal, Plast Seal Quick, and Poly Seal) were ...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2003.12.004
更新日期：2004-05-01 00:00:00
abstract：OBJECTIVES:To investigate repairs of direct restorations by a group of Dutch general dental practitioners (GDPs) and its consequences on longevity of restorations. METHODS:Data set was based on dental records of patients attending 11 general dental practices (24 Dentists) in the Netherlands. Patients that received Cla...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2017.06.002
更新日期：2017-09-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the microtensile bond strengths of total etching adhesive systems to pulpal chamber wall dentine after treated with various irrigants. METHODS:Thirty extracted human third molars were cut horizontally to expose the pulp horn. The roof of the pulp chamber and pulp ti...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/j.jdent.2005.01.008
更新日期：2005-09-01 00:00:00
abstract：OBJECTIVES:This study concerned the temperature and linear dimensional change of heat-cured acrylic resin in the two-stage processing technique for complete dentures. METHODS:Thermocouples were incorporated in the acrylic resin for recording temperatures. Measurements between reference marks were made by a high-resolu...
journal_title：Journal of dentistry
pub_type： 杂志文章
doi：10.1016/0300-5712(95)91190-x
更新日期：1995-08-01 00:00:00
