Abstract:
:Dehydration by alcohols and concentrated solutions of highly soluble salts caused refractive changes in enamel which were enhanced in the cervical regions. Electron microscopy showed crystals in cervical enamel to vary from normal orientation, size and habit to marked disorientation and reduced size. Consequent increases in surface area and inter-crystalline volume could account for the exaggerated optical behaviour. The changes in optical properties of enamel occurred only when the osmotic pressures of the imbibing solutions exceeded 500 atm. It is proposed that the internal pore system may take up water freely but exclude large hydrated molecules and ions which thereby create a negative pressure on the water contained in these pores. Once this negative pressure exceeds the tensile strength of the water-pore system, molecules may be torn from their attachment sites, and possibly from each other, so that a sudden evacuation of the pores is accompanied by a simultaneous reduction in refractive index. It is likely that such sudden evacuation would alter the potential of the pore surfaces to react with small molecules and ions subsequently invading the tissue.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Poole DF,Newman HN,Dibdin GHdoi
10.1016/0003-9969(81)90106-0subject
Has Abstractpub_date
1981-01-01 00:00:00pages
977-82issue
12eissn
0003-9969issn
1879-1506journal_volume
26pub_type
杂志文章abstract:OBJECTIVE:The complex movement of the temporomandibular joint (TMJ) disc during mastication is controlled in large part by the disc's attachments to the surrounding tissues. This study seeks to address the lack of available quantitative data characterizing the extracellular matrix composition of the discal attachments ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2011.10.004
更新日期:2012-06-01 00:00:00
abstract:OBJECTIVES:Previous studies have suggested that the vasculature in the dental pulp and periodontal tissues plays an important role in producing the eruptive force in continuously erupting incisors. The aim of the present study was to investigate the effects of local injections of vasoactive drugs on regional blood flow...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2005.11.001
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:To investigate the effect of resveratrol (RSV) on orthodontic tooth movement (OTM) and orthodontic induced root resorption (OIRR) in rats. METHODS:Thirty-six male Wistar rats used in this study were randomly divided into three groups of 12 animals each. All test subjects underwent a 50 g orthodontic force ea...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2019.104642
更新日期:2020-03-01 00:00:00
abstract::Dispersed salivary acini isolated from the rat submandibular gland were incubated in a HEPES-buffered Krebs-Ringer solution or in the same buffer containing 20 mM NH4Cl and the accumulation and efflux of K+ were measured with the radiotracer 86Rb+, in the presence and absence of acetylcholine and of transport inhibito...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(92)90135-u
更新日期:1992-01-01 00:00:00
abstract::Eruption is a highly localized process during which the bone resorption and formation that occur on opposite sides of the tooth are dependent upon the surrounding soft tissues, the true dental follicle externally and the enamel organ internally. To examine the ability of the enamel organ to cause eruption the external...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(94)90116-3
更新日期:1994-04-01 00:00:00
abstract::The effect of muscle temperature on the speed of contraction and on the strength of contraction of the cat jaw muscles was studied. Muscles contracted faster when their temperatures were increased. The tetanic and twitch tension decreased significantly as the animal was heated from 30 to 40 degrees C. ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(84)90030-x
更新日期:1984-01-01 00:00:00
abstract:OBJECTIVE:The aim of this study is to clarify the effects of zinc chloride (ZnCl2) exposure on the induction of heme oxygenase-1 (HO-1) expression and its regulatory mechanisms in MDPC-23 mouse odontoblast-like cells. METHODS:MDPC-23 cells were incubated with ZnCl2, and the levels of HO-1 protein, phosphorylated forms...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2012.09.002
更新日期:2013-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the expression of matrix metalloproteinase inducer (EMMPRIN) and its correlation with the expression of matrix metalloproteinases (MMPs)-1, -2 and -9 during the development of periapical lesion in mice. METHODS:Periapical lesions were induced in the lower first molars of mice and after 7, 14, 21 ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2014.05.021
更新日期:2014-09-01 00:00:00
abstract::To study the effects of increased occlusal vertical dimension on these kinetics, the actin-filament sliding velocity on masseter myosins in an in vitro motility assay and the ATPase activity of masseter myosins from normal (control) and bite-opened (5.6 mm increase in the vertical dimension for 1 week) guinea-pigs wer...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(97)00038-1
更新日期:1997-07-01 00:00:00
abstract::These were characterized in stimulated saliva from 21 healthy volunteers using antibodies specific for human tissue-type plasminogen activator (t-PA) or urokinase. After pre-incubation with immunoglobulins, with and without specific antibodies, the fibrinolytic activity was assayed on fibrin plates containing plasmino...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(87)90097-5
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVE:As shown in the quantitative suspension test adding lactoperoxidase to a thiocyanate (SCN(-)) hydrogen peroxide (H(2)O(2)) combination over the physiological saliva level has significant positive antimicrobial effects to a level of totally killing Streptococcus mutans, Streptococcus sanguinis, and Candida alb...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2011.04.016
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:Macrophages are involved in tissue inflammation and repair through cytokine secretion. However, the contribution of macrophages to healing and osteogenesis after tooth extraction remains unclear. Therefore, we investigated the distribution of osteoblastic cells and macrophages in the early healing process aft...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2021.105042
更新日期:2021-01-08 00:00:00
abstract::The net surface charge of various oral streptococci were assessed by aqueous two-phase partitioning in a dextran-polyethylene glycol system. Great variability was found among individual strains within all species tested. Type 1 strains of Streptococcus sanguis serotypes which have been found to be more adherent, expos...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(81)90114-x
更新日期:1981-01-01 00:00:00
abstract:OBJECTIVE:To compare the densities of CD1a + immature and CD83+ mature dendritic cells, and inflammatory infiltrate cells between smokers and non-smokers with oral leukoplakia. Parameters associated with malignant transformation were also evaluated. DESIGN:21 smokers and 23 non-smokers diagnosed with oral leukoplakia ...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2018.07.008
更新日期:2018-11-01 00:00:00
abstract:OBJECTIVE:To evaluate the antimicrobial activity of a silver nanoparticles/carboxymethyl-cellulose (AgNPs/CMC) composite on in vitro and dentine disc heterogeneous biofilms. DESIGN:AgNPs/CMC composite effect on normal human gingival fibroblast cells (HGF) viability was determined by the MTT reduction assay. In additio...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2020.104943
更新日期:2020-12-01 00:00:00
abstract::Centrifuged deposits of various individual bacteria from type-culture collections and dental plaque samples were immersed in liquid nitrogen for periods of up to 2 years. All the organisms were recovered after storage in liquid nitrogen but Fusobacterium nucleatum (ATCC 10953) and Campylobacter fetus (NCTC 10354) cons...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(84)90095-5
更新日期:1984-01-01 00:00:00
abstract:INTRODUCTION:Intact neural supply is necessary for tooth eruption. Sympathetic denervation accelerates or decelerates the eruption rate depending on the tooth condition (intact or injured). The aim of this study is to reexamine the role of the sympathetic innervation, through the observation of the effects of pre or po...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2018.02.003
更新日期:2018-05-01 00:00:00
abstract:OBJECTIVE:To identify the genetic risk markers of aggressive periodontitis (AgP), researchers focus on genetic components that regulate the immune response. Therefore the purpose of this study was to investigate genetic impact of monocyte chemoattractant protein (MCP)-1-2518A/G and CC chemokine receptor 2 (CCR2) -190G/...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2017.04.016
更新日期:2017-08-01 00:00:00
abstract:OBJECTIVE:Connexins (Cxs) are important to control growth and cell differentiation of dental tissues. The aim of the present study was to assess the impact of chronic exposure to sodium fluoride (NaF) on Cxs expression and alkaline phosphatase (ALP) activity in dental pulp, and on morphometric parameters of adult rat m...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2014.11.003
更新日期:2015-02-01 00:00:00
abstract::It is well accepted that reduced masticatory function induced by a diet with soft physical consistency causes alterations in the craniofacial morphology in growing animals. It is assumed that these alterations are associated with reduced proliferative activity of osteoblasts on the bone surface, indicating a significa...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(00)00057-1
更新日期:2000-10-01 00:00:00
abstract::The classical hydrodynamic theory implicated fluid movement as a transducing mechanism in the production of dental sensitivity. This theory assumes that sensitive dentine must be permeable. Various measurements of dentine permeability are discussed, including: (1) factors that influence diffusive permeation across den...
journal_title:Archives of oral biology
pub_type: 杂志文章,评审
doi:10.1016/0003-9969(94)90191-0
更新日期:1994-01-01 00:00:00
abstract::The association of wheat germ agglutinin (WGA) and peanut agglutinin (PNA) with oral tissues after eating raw wheat-germ or raw peanuts, respectively, was determined. An indirect enzyme-linked immunoassay (ELIA) was used to detect WGA and PNA on epithelial cells. Buccal and tongue epithelial cells, and preparations of...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(83)90002-x
更新日期:1983-01-01 00:00:00
abstract::In culture, chondrocytes of Meckel's cartilage can differentiate further to become bone-type collagen-synthesizing cells. Here, the replacement of type II collagen by type I collagen, accompanying expression of the osteocytic phenotype, was analysed by double immunofluorescence staining, histochemistry and electron mi...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(97)00104-0
更新日期:1998-02-01 00:00:00
abstract::Apoptosis in regressive primary (deciduous) dental primordia was examined in the embryos of Suncus murinus, which is a monophyodont. The primary tooth germs of S. murinus are temporarily formed and disappear during the embryonic period before they are calcified. Most primary tooth germs reach the bell stage and degene...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/s0003-9969(01)00007-3
更新日期:2001-07-01 00:00:00
abstract::Gingival crevicular fluid (GCF) was collected into capillary tubes from healthy gingiva and sites of advanced periodontitis. Following digestion with Pronase E, the glycosaminoglycans were isolated by successive precipitation into 5% cetylpyridinium chloride and 95% ethanol. Unsaturated disaccharide isomers of chondro...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(95)00038-q
更新日期:1995-08-01 00:00:00
abstract:UNLABELLED:Tooth enamel is formed by ameloblasts, which are derived from the epithelial cells of the enamel organ. OBJECTIVE:The purpose of this study was to grow human ameloblast-like epithelial cells in culture. DESIGN:Human fetal tooth organs were isolated, and the cells were separated by digestion in collagenase/...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2004.12.008
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:Obtaining high number of stem cells is of interest for cell based therapies. N-Acetyl-l-cysteine (NAC) acts as a source of sulfhydryl groups and an anti-oxidative agent. The aim of this study was to test different NAC concentration on proliferation and differentiation of deciduous teeth dental pulp stem cells...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2016.06.002
更新日期:2016-10-01 00:00:00
abstract:OBJECTIVE:We have applied fluorimetric method to monitor aldehyde dehydrogenase (ALDH*) activity in human saliva samples to study inactivation, reactivation and inhibition of the enzyme. DESIGN:Saliva samples were collected to buffer stock solution, containing various thiols, and assayed in the presence of the fluorog...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2007.11.004
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:To investigate the mesial cervical concavity of maxillary first premolars and its relationship with root and canal configuration using cone-beam computed tomography (CBCT). DESIGN:Images of maxillary first premolars (n = 1056) were collected from patients (n = 601) who had undergonein vivo CBCT scanning. The...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2018.05.002
更新日期:2018-08-01 00:00:00
abstract:OBJECTIVES:The influence of carotid artery occlusion (10, 30 and 60 min) on regulatory mechanisms implicated in the vasorelaxant responses of isolated glandular branch of rabbit facial artery to acetylcholine (ACh) and vasoactive intestinal polypeptide (VIP) was examined. DESIGN:In organ bath studies with arterial rin...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2010.03.006
更新日期:2010-05-01 00:00:00