Abstract:
OBJECTIVES:A low pH environment is created by cariogenic bacteria. This study was aimed to measure pH of carious lesions intraorally using a micro-pH sensor, and assess predominant acid-producing cariogens by qPCR to differentiate caries activities. METHODS:103 dentine lesions classified as active or arrested caries based on the clinical and radiological examinations were collected from patients after intraoral measurement of the lesion surface pH using a micro-pH sensor. Quantitative detection of genomic DNA copies of target cariogenic bacteria (mutans streptococci and Lactobacillus spp.) in each lesion was performed using real-time PCR. Correlation between the pH ranges and the number of bacterial species was examined by Spearman test. RESULTS:50 samples were diagnosed as active and 53 as arrested lesions. Statistically significant difference was observed on average surface pH value between active and arrested lesions (p<0.05). Prevalence of Lactobacillus spp. was higher in active lesions than in arrested lesions (76% vs. 58% of samples, respectively). When the carious lesions were categorised into four different pH ranges (up to 5.5, from 5.6 to 5.8, from 5.9 to 6.1 and 6.2 or above), increased prevalence of Lactobacillus spp. was observed with decrease of pH levels. A significant negative relationship was found between pH value and number of Lactobacillus spp. (r=-0.209, p<0.05) but no such correlation was found for mutans streptococci. CONCLUSIONS:Intraoral pH measurement might be clinically useful to determine acidity of the local environment of carious lesions as one aspect of the caries activity assessment. CLINICAL SIGNIFICANCE:The population of certain bacteria may indicate activity of carious lesions. Intraoral pH measurement of the carious lesions using a micro-pH sensor may be a clinically feasible method for assessment of lesion acidity.
journal_name
J Dentjournal_title
Journal of dentistryauthors
Kuribayashi M,Kitasako Y,Matin K,Sadr A,Shida K,Tagami Jdoi
10.1016/j.jdent.2011.12.013subject
Has Abstractpub_date
2012-03-01 00:00:00pages
222-8issue
3eissn
0300-5712issn
1879-176Xpii
S0300-5712(11)00321-6journal_volume
40pub_type
杂志文章abstract:OBJECTIVE:Sodium hexametaphosphate (SHMP) is a widely used industrial preservative commonly found in children's drinks. In this paper we examined the effect of SHMP incorporated into children's drinks on acid production by the oral biofilm by monitoring salivary concentrations of lactic acid. MATERIALS AND METHOD:Twel...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2006.08.003
更新日期:2007-03-01 00:00:00
abstract::The bacteriological contamination of pumice slurry in polishing units in a dental clinical area (high risk), a production laboratory (medium risk), and a non-clinical teaching laboratory (low risk), was investigated. Slurry samples taken from all three areas were found to be heavily contaminated with pathogenic organi...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(90)90030-i
更新日期:1990-10-01 00:00:00
abstract:OBJECTIVES:Tooth shade is crucial to patient satisfaction in aesthetic dentistry. Two-dimensional (2D) clinical photographs have been widely used to record patients' tooth shade for creation of beautiful smile. However, in the digital workflow, 3D virtual teeth models in open file format contain only mesh information w...
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doi:10.1016/j.jdent.2018.09.009
更新日期:2018-12-01 00:00:00
abstract:OBJECTIVES:to explain the practice of wish-fulfilling medicine and how it relates to dentistry. SOURCES:Relevant papers, and reports from authoritative institutions were identified in Pubmed and Google Scholar. RESULTS:Wish-fulfilling medicine refers to services provided by professionals using medical methods in a me...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/j.jdent.2020.103302
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVES:The dysbiotic oral microbiome plays a key role in the pathogenesis of caries in children. Topical application of casein phosphopeptide-amorphous calcium phosphate containing fluoride (CPP-ACP/F) is an effective treatment modality for children with caries (CC). Hitherto the mechanism by which CPP-ACP/F module...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2021.103582
更新日期:2021-01-12 00:00:00
abstract:OBJECTIVES:An optimisation of the mixing ratio of an encapsulated glass-ionomer restorative in terms of compressive strength, working characteristics and pore distribution following mechanical mixing with different mixing machines was undertaken. METHODS:Mean compressive fracture strengths, standard deviations and ass...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2005.05.008
更新日期:2006-02-01 00:00:00
abstract:OBJECTIVES:Traditional mechanical methods of retaining restorative materials have been replaced to a large extent by tooth conserving adhesive restorative techniques. Because adhesives have been evolving so rapidly for the last few years, the timing is right for evaluating the clinical status of present day adhesives. ...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/s0300-5712(96)00070-x
更新日期:1998-01-01 00:00:00
abstract::Evidence exists that plasma F- concentrations of 1.0 part/10(6) are nephrotoxic and that much lower levels disturb enamel mineralization. Ingested F(-)-containing gels, tablets and toothpastes all raise plasma F- levels significantly, as does prolonged exposure to fluorine-containing anaesthetic gases. There is, there...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(90)90254-c
更新日期:1990-02-01 00:00:00
abstract:OBJECTIVES:The objectives of this study were two-fold: (1) to determine (by surfometry) loss of deciduous and permanent enamel and dentine following 15days' exposure to a single low pH orange drink; and (2) to determine (by surfometry) loss of deciduous and permanent enamel and dentine following exposure to the product...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(99)00074-3
更新日期:2000-05-01 00:00:00
abstract::Maximum lateral forces as measured by strain gauges mounted on the analysing rod of a Nesor surveyor for four operators during surveying procedures ranged from 81 to 110 cN (mean 92.4 cN). Maximum lateral forces used when trimming blockout and inlay wax ranged from 159 to 184 cN (mean 169 cN) and 137 to 196 cN (mean 1...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(91)90012-n
更新日期:1991-06-01 00:00:00
abstract:OBJECTIVES:Full-ceramic systems can be produced by different techniques (layering, heatpressing, CAD/CAM) and have various compositions with different crystalline contents that may affect the optical properties of laminate restorations. METHODS:A total of 60 specimens were prepared from e.max Press, e.max CAD, Empress...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2012.11.013
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVES:Chlorhexidine (CHX) is a commonly used antiseptic mouthwash, used by dental practitioners and the public, due to its antimicrobial effects. The aim of this article was to provide a narrative review of current antimicrobial uses of CHX relevant to dentistry in the context of oral diseases, highlighting need f...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/j.jdent.2020.103497
更新日期:2020-12-01 00:00:00
abstract:OBJECTIVE:To investigate the association between xerogenic medication use and tooth wear among American adults and whether this association can be explained by subjective oral dryness. METHODS:We used data from 3578 adults who participated in the National Health and Nutritional Examination Survey (NHANES). Tooth wear ...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103542
更新日期:2020-12-01 00:00:00
abstract:INTRODUCTION:Tooth surface loss (TSL) is an increasingly recognised problem. We are therefore seeing an increase in the number and complexity of in vitro studies investigating factors that modify effects at the tooth surface. AIM:The aim of this paper is to provide a narrative review that illustrates the more commonly...
journal_title:Journal of dentistry
pub_type: 杂志文章,评审
doi:10.1016/j.jdent.2010.01.002
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVES:The reason for high water absorption by room temperature vulcanizing (RTV) silicone denture soft lining materials has not been demonstrated previously. An experimental room-temperature vulcanizing (RTV) silicone soft lining material which had been shown to have good mechanical properties had high water absor...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/0300-5712(95)00032-1
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVES:Effective delivery of active agents to dental hard tissues is critical to product performance and pertinent to biofilm control, caries, erosion, hypersensitivity and tooth bleaching. The aim of this study was to investigate in vitro the bioadhesion and retention behaviour of non-aqueous delivery systems (NAD...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2010.06.005
更新日期:2010-09-01 00:00:00
abstract:OBJECTIVES:Astra Tech implants have been used to provide implant supported overdentures for 25 people, 13 with paired stud retention, 10 with paired magnetic retention and two with magnetic retention on three fixtures. RESULTS:The first case was completed in June 1990 and the last in May 1992. Of the 52 fixtures which...
journal_title:Journal of dentistry
pub_type: 临床试验,杂志文章
doi:10.1016/s0300-5712(97)87698-1
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVES:To analyse the effect of first and second premolar extractions on eruption space for upper and lower third molars and on third molar position and angulation during orthodontic treatment. METHODS:The sample consisted of 296 patients of which 218 patients were orthodontically treated without extraction and 78...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.03.007
更新日期:2017-06-01 00:00:00
abstract:PURPOSE:Develop a methodology to correlate microtensile bond strength (microTBS) and leakage within the same site of a specimen and evaluate the predominate debond and leakage pathways. MATERIALS AND METHODS:A Class II (MO) slot cavity was prepared in 37 extracted human molars and restored with indirect resin composit...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(00)00065-8
更新日期:2001-02-01 00:00:00
abstract:OBJECTIVES:This study aimed to assess the effect of curing conditions--exposure time, mode, energy density, and exposure distance--on the mechanical properties of high-viscosity bulk-fill resin-based composites (RBCs) measured at simulated clinical relevant filling depths. METHODS:Three high-viscosity bulk-fill RBCs w...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2014.05.012
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVE:The aim of this long-term follow-up was to collect up to 17-year survival data of different metal post-and-core restorations with a covering crown. METHODS:At initiation of the study, a controlled clinical trial, single tooth was provided with an artificial covering crown, by 18 operators. Restorations under...
journal_title:Journal of dentistry
pub_type: 杂志文章,随机对照试验
doi:10.1016/j.jdent.2007.07.006
更新日期:2007-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to clarify the positional relationship between the crown contour and the pulp chamber using micro-CT system for restorations of maxillary second deciduous molar. METHODS:Five maxillary second deciduous molar teeth each from the deciduous dentition and the mixed dentition periods...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2005.12.001
更新日期:2006-08-01 00:00:00
abstract:OBJECTIVES:Inhibition of hybrid layer degradation, for example via inhibition of matrix-metallo-proteinases (MMP) could reduce risk of retention loss and failure of adhesively placed restorations. This systematic review investigated such inhibitory pretreatment qualitatively and via meta- and trial-sequential-analysis....
journal_title:Journal of dentistry
pub_type: 杂志文章,meta分析,评审
doi:10.1016/j.jdent.2016.04.007
更新日期:2016-06-01 00:00:00
abstract:OBJECTIVES:This study investigated the in-vitro performance and fracture force of anterior implant-supported tooth-coloured fixed dental prosthesis (FDPs). Different material types with varying flexural strength and modulus of elasticity were compared with screw-retained or bonded application. MATERIALS AND METHODS:Id...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2020.103326
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVE:To evaluate the effect of shading technique and thickness on the color stability and translucency of translucent zirconia after coffee thermocycling. METHODS:Specimens in different thicknesses (1; 1.5; 2 mm) (n = 4 for each thickness) were sectioned from translucent preshaded zirconia (Pre) and externally sh...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2018.03.011
更新日期:2018-06-01 00:00:00
abstract:OBJECTIVES:To detect any differences in the propensity of unstimulated and stimulated, individual whole saliva to cause in vitro staining by chlorhexidine and tea. METHODS:Unstimulated and stimulated human saliva was collected on a daily basis and used to coat optically clear acrylic specimens. Specimens were subjecte...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/s0300-5712(02)00053-2
更新日期:2002-09-01 00:00:00
abstract:OBJECTIVES:The effectiveness of fissure sealing in preventing dental caries in a subject-specific fashion was studied in order to forge a link between the controlled trials and knowledge creation in clinical practice. METHODS:The subjects were divided retrospectively into three categories according to the sealant trea...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2006.10.009
更新日期:2007-04-01 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...
journal_title:Journal of dentistry
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:OBJECTIVES:To evaluate the effect of hydrothermal aging (H), mechanical cycling (M), and the combination of hydrothermal plus mechanical cycling (H+M) on biaxial flexural strength (BFS) and microstructure of two monolithic zirconias, indicated for anterior (AMZ) or posterior restorations (PMZ) and a conventional zircon...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2017.05.021
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVES:The aim of this study was to evaluate the influence of different titanium zirconium (TiZr) alloy surfaces on primary human gingival fibroblasts (HGF) for improved soft tissue integration of dental implants. METHODS:TiZr polished, machined and machined+HCl/H2SO4 acid-etched surfaces were modified by cathodic...
journal_title:Journal of dentistry
pub_type: 杂志文章
doi:10.1016/j.jdent.2013.11.003
更新日期:2014-01-01 00:00:00