Abstract：
:Simultaneous recordings of the activity of the masseter and anterior temporalis and of jaw movement were made on 10 healthy dentate volunteers while they chewed roasted peanuts in their habitual manner. The quantity of food taken was altered by varying (a) its total weight (mouthful) between 8 and 1 g, but with a fixed initial particle size and (b) by varying its initial particle size between median sizes of 9.2 and 2.4 mm, but keeping the mouthful constant. Significant differences were found in the peak and mean (r.m.s.) estimates of muscle activity (particularly in the masseter), and the dimensions of jaw movements. These differences were associated with the variation in both the size of the mouthful and of the initial particles but were much greater with changes in the mouthful. A dimensional argument treating both the weight of food in the mouth and initial particle size as volumes showed that initial particle volume had been varied by approximately 50 times as much as mouthful volume and therefore that the mouthful was a far more critical factor in masticatory physiology than was the particle size of the food. The reasons for this probably lie in an understanding of mechanisms of food comminution.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Diaz-Tay J,Jayasinghe N,Lucas PW,McCallum JC,Jones JTdoi
10.1016/0003-9969(91)90120-jsubject
Has Abstractpub_date
1991-01-01 00:00:00pages
893-8issue
12eissn
0003-9969issn
1879-1506journal_volume
36pub_type
杂志文章abstract：OBJECTIVE:It has been suggested that oxidative stress plays a role in the pathogenesis of chronic obstructive pulmonary disease (COPD), though this role has yet to be fully elucidated. The purpose of this study was to further evaluate this role as concomitantly expressed in the saliva and broncho-alveolar lavage (BAL/'...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2006.08.002
更新日期：2007-01-01 00:00:00
abstract：:Porphyromonas gingivalis culture products and a purified trypsin-like protease (TLPase) from the organism were tested for their effects on the phagocytosis of P. gingivalis by polymorphonuclear leucocytes (PMN) from 16 patients with adult periodontitis and 16 healthy subjects in a case-control study. Both the culture ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(93)90134-8
更新日期：1993-04-01 00:00:00
abstract：:A phenotypic study had shown that gingival B cells respond differently to two periodontopathic bacteria, Porphyromonas gingivalis and Fusobacterium nucleatum. Further investigation now shows a reduction in the percentage of Ki-67 + T cells in cultures of gingival and peripheral blood mononuclear cells stimulated with ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(92)90139-y
更新日期：1992-01-01 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：OBJECTIVE:This study reports the expression of proinflammatory cytokines in temporomandibular joint (TMJ) of patients affected with temporomandibular osteoarthritis (OA). DESIGN:In twelve OA of the TMJ (OA-TMJ) affected patients and in six healthy volunteer subjects studied as control, the expression of IL1beta (inter...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2008.04.004
更新日期：2008-10-01 00:00:00
abstract：OBJECTIVE:Juzentaihoto (JTX) is a traditional Japanese medicine that consists of 10 herbs. The purpose of this study was to evaluate the efficacy of multi-herbal medicine JTX as a preventive and therapeutic drug for periodontal bone resorption and for reducing restraint stress. MATERIALS AND METHODS:Porphyromonas ging...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2014.06.010
更新日期：2014-11-01 00:00:00
abstract：OBJECTIVE:Amelogenesis imperfecta (AI) is a group of clinically and genetically heterogeneous inherited conditions, causing alterations in the structure of enamel and chemical composition of enamel matrix during development. The objective of this study was to compare the clinical, radiographic, histological and immunoh...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2015.06.016
更新日期：2015-09-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to investigate the correlation between the immunohistochemical expression of proliferating cell nuclear antigen (PCNA), factor VIII, and CD34 (markers of endothelial cells), and vascular endothelial growth factor (VEGF) and the recurrence of oral squamous cell carcinoma (OSCC) and or...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2011.04.012
更新日期：2011-11-01 00:00:00
abstract：:Experiments showed that the human capacity to maintain a particular isometric force in the presence of visual feedback during a force-level, pursuit-tracking experiment is less developed for the jaw-closing muscles than for the limb muscles. This finding may indicate that the projection on the trigeminal motoneurone p...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90150-s
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVE:To investigate morphological and biochemical changes in an experimental model of temporomandibular joint (TMJ) arthritis, as well as examine contralateral joint involvement and morphometric aspects of masticatory muscles in affected animals. DESIGN:Forty Wistar rats were allocated into three groups, as follo...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2018.07.003
更新日期：2018-11-01 00:00:00
abstract：:The effects of ligation on body weight, protease activity and hair kynurenine content were observed. The body weights of parotid gland(PT)-ligated and of combined submandibular (SM)-, sublingual (SL)- and PT-ligated rats were much less than those of sham-operated controls. However, the weights of SM,SL-ligated rats we...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(88)90137-9
更新日期：1988-01-01 00:00:00
abstract：:Radially directed inter-odontoblastic collagen fibres were observed in ultra-thin sections of the radicular pulp/predentine complex of rat molars. Bundles of fibres crossed the distal junctional complexes of the odontoblasts, went through the whole thickness of the predentine and were incorporated into the mineralized...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(91)90082-6
更新日期：1991-01-01 00:00:00
abstract：OBJECTIVES:The aim of this study is to clarify the functional significance of heat-shock protein (HSP)-25 during tooth development. DESIGN:We compared the expression of HSP-25 in the dental epithelial and mesenchymal cells with their proliferative activity during odontogenesis in rat molars on postnatal days 1-100 by ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2005.09.007
更新日期：2006-05-01 00:00:00
abstract：:It is well known that low-molecular weight hyaluronan (HA) is detected in human periodontal tissue under inflammatory conditions. HA oligosaccharide (HAoligo) has been demonstrated to induce matrix metalloproteinase (MMP)-1 expression in dendritic cells and chondrocytes, however, the bioactivities of HAoligo in period...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2009.05.005
更新日期：2009-08-01 00:00:00
abstract：OBJECTIVE:The aim of this study is to explore patterns of non-syndromic permanent tooth agenesis in a large orthodontic patient group. DESIGN:A record review was performed in various orthodontic clinics to identify white patients with non-syndromic permanent tooth agenesis, excluding 3rd molars. Four hundred and fourt...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2017.02.020
更新日期：2017-07-01 00:00:00
abstract：:Long non-coding RNAs (lncRNAs) have recently attracted more attention about the role in a broad range of biological processes and complex cancers. We aimed to identify differentially expressed lncRNAs that play an important role in the pathogenesis of oral squamous cell carcinoma (OSCC). Microarray data GSE25099 consi...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2015.08.003
更新日期：2015-10-01 00:00:00
abstract：:Most commercial dentifrices contain sodium lauryl sulphate, which oxidizes upon storage. The effects of aged sodium lauryl sulphate and its oxidative breakdown products on the conversion of amorphous calcium phosphate to hydroxyapatite were studied in vitro by a pH drop method. Hydroxyapatite was identified from its X...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(92)90085-m
更新日期：1992-03-01 00:00:00
abstract：:Masseter and digastric muscle activities and jaw movement trajectories were recorded in freely moving rabbits during eating. The patterns in these trajectories and activities were similar to those described in previous studies on restrained animals. Although the duration of masticatory sequences, which started with fo...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(92)90099-t
更新日期：1992-01-01 00:00:00
abstract：UNLABELLED:Adaptive remodelling of the mandibular condyle in response to mandibular advancement is the mechanism exploited by orthodontic forward displacement devices. OBJECTIVE:This work investigated the expression of collagens, matrix metalloproteinases and vascular endothelial growth factor during this process. DE...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2011.09.017
更新日期：2012-06-01 00:00:00
abstract：:Normal function of the lateral pterygoid muscle is not well understood. The principal aim of this study was to determine whether there is a progressive decrease in lateral pterygoid activity as the condyle moves posteriorly and superiorly during the return phase of a contralateral or protrusive jaw movement, as would ...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(00)00011-x
更新日期：2000-06-01 00:00:00
abstract：OBJECTIVE:To test the association of child's growth/development status and socioeconomic variables with dental emergence patterns. DESIGN:A sample of 359 children belonging to a birth cohort of over 5000 children born in 1993 in Pelotas (Brazil) was studied in 1998-1999. Previously trained observers collected birthwei...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2006.12.001
更新日期：2007-06-01 00:00:00
abstract：:Dental follicle has been implicated as the origin of alveolar bone, cementum and periodontal ligament, but there is no direct evidence of their cellular lineage. The present pilot study was designed to characterize the phenotype of cultured cells obtained from the dental follicle of neonatal mouse molars. Developing m...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(99)00033-3
更新日期：1999-09-01 00:00:00
abstract：:The fortuitous observation of salivary microliths in ferret was pursued in the present investigation. Major salivary glands obtained post-mortem from mature ferrets of either sex were examined with the use of histology and light microscopical histochemistry for calcium, protein, amino acids, mucosubstances and hydroly...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2005.07.009
更新日期：2006-03-01 00:00:00
abstract：:Counts of cultivable Porphyromonas gingivalis, assays of microbial proteases and the concentration in gingival crevicular fluid of proteoglycan metabolites were investigated at periodontitis and gingivitis sites in 16 patients with chronic adult periodontitis before and after treatment. Two periodontitis sites and two...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/s0003-9969(96)00103-3
更新日期：1997-01-01 00:00:00
abstract：:Various fruit juices with relatively low pH are known to have erosive effects on human tooth enamel in a reasonably short time. Honey, also with a relatively low pH, could do the same, but scanning electron microscopy showed no erosion of enamel by honey over a period of 30 min, neither did Knoop microhardness tests s...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(94)90110-4
更新日期：1994-02-01 00:00:00
abstract：:Previous studies have reported that the abnormal development of the second deciduous molar in Down syndrome and cerebral palsy begins before birth. In view of these results we have turned our attention to the earlier stages of dental development in utero, represented by the primary canine, in order to see if we can id...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2007.04.011
更新日期：2007-10-01 00:00:00
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：:The abrasiveness of food is a key determinant in the rate of physiological attrition (dental wear) in humans. With increasing food processing through time, the rate of physiological dental wear in human teeth has decreased markedly. Many consider such wear to be beneficial to oral health and that insufficient wear may...
journal_title：Archives of oral biology
pub_type： 历史文章,杂志文章
doi：10.1016/s0003-9969(99)00095-3
更新日期：1999-11-01 00:00:00
abstract：OBJECTIVE:This in vitro study was undertaken to assess the effects of Galla chinensis extract on inhibition of enamel caries-like demineralization and to elucidate the role of the organic matrix of enamel in this process. DESIGN:Either regular or enamel disposed of its organic matrix both of bovine origin were exposed...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/j.archoralbio.2009.06.007
更新日期：2009-09-01 00:00:00
abstract：:The layer was evaluated by scanning electron microscopy and by measurement of hydraulic conductance before and after 2-min topical treatment with potassium chloride, neutral potassium oxalate, half-neutralized oxalic acid or both neutral and acidic oxalates. The treated smear layers were then re-evaluated microscopica...
journal_title：Archives of oral biology
pub_type： 杂志文章
doi：10.1016/0003-9969(85)90185-2
更新日期：1985-01-01 00:00:00
