Abstract：
:It is considered that the information of chewed food, such as size and texture, is important for smooth mastication. In this study, we analysed aspects of the control of occlusal force, by experimentally reproducing situations in which the hardness of food changed unpredictably during mastication, using a device that utilized a 3-sectioned urethane rubber piece with different hardness values. Seven healthy subjects were instructed to perform repetitive jaw open-close movements paced by a metronome (1.0 Hz) and to maintain constant occlusal force throughout the trial. Using the device, the following parameters were measured during the first to fifth strokes after changing the hardness, peak value, impulse, duration and time to peak of occlusal force in the waveform of occlusal force, cycle time of open-close jaw movements, jaw gape and maximum speed in the closing phase in the waveform of the jaw movements. Each parameter value was statistically analysed by anova with Fisher's least significant difference method (P < 0.05). Peak occlusal force, impulse and jaw gape were significantly affected by the change in hardness, while an increase in hardness caused increases in the values for peak occlusal force and impulse against the instruction, after which those values remained constant while the subjects occluded the same level of hardness. Our results indicate that the level of the resulting occlusal force is regulated automatically according to the hardness of the chewed food. We concluded that occlusal force was adapted for efficient mastication when the hardness of foods changes unpredictably.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Shimada A,Tanaka M,Yamashita R,Noguchi K,Torisu T,Yamabe Y,Fujii H,Murata Hdoi
10.1111/j.1365-2842.2007.01746.xsubject
Has Abstractpub_date
2008-01-01 00:00:00pages
12-9issue
1eissn
0305-182Xissn
1365-2842pii
JOR1746journal_volume
35pub_type
杂志文章abstract：:The first purpose of this study was to translate the Oral Behaviours Checklist (OBC) into Dutch and to examine its psychometric properties. The second purpose was to examine the correlations between scores on the OBC and facial pain, while controlling for the possible confounding effects of psychosocial factors, such ...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
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更新日期：2014-02-01 00:00:00
abstract：:The aim of this study was to evaluate the effect of oscillating forces upon the flow of five dental cements. A laboratory investigation was carried out using a crown and die. It showed that the application of oscillating forces improved the flow of the tested dental cements when combined with low static loads and wide...
journal_title：Journal of oral rehabilitation
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doi：10.1046/j.1365-2842.1999.00459.x
更新日期：1999-11-01 00:00:00
abstract：:The associations between oral parafunctions, signs and symptoms of craniomandibular disorders (CMD), race, and sex were analysed in recordings from 203 4-6-year-old African-American and Caucasian children. Significant correlations were found between bruxism, nail biting, thumb sucking and most of the CMD signs and sym...
journal_title：Journal of oral rehabilitation
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abstract：:Nineteen patients with definite and suspected temporomandibular joint (TMJ) osteoarthritis participated in this study. All patients were treated by dental care including bite plane therapy. By comparing the pre-treatment clinical symptoms and TMJ tomograms with those post-treatment, efficacy of the dental treatment ap...
journal_title：Journal of oral rehabilitation
pub_type： 临床试验,杂志文章
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更新日期：1994-07-01 00:00:00
abstract：:Recent evidence has been presented suggesting that 'depression' headaches and classic migraines may be related to extended sleep duration. This analogue study was designed to evaluate the possibility that mild to moderate headaches induced by excessive sleep might be related to increased muscle activity. Eight subject...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.1987.tb00726.x
更新日期：1987-07-01 00:00:00
abstract：:Glass ionomer cement (ASPA) was inserted in unconditioned class V cavities or in contact with polished ground surfaces of enamel and dentine in twelve teeth. Ground sections of all teeth were examined by microradiography, and four of the sections submitted to electron probe microanalysis. A narrow outer zone of increa...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.1980.tb01461.x
更新日期：1980-01-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章,随机对照试验
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更新日期：2005-11-01 00:00:00
abstract：:Physiological tooth movements during mandibular excursions with and without occlusion have been considered. Using electronic and pantographic techniques, anterior guidance and tooth movements during simulated mastication (without a bolus) were investigated. Investigations in the absence of occlusion showed that elasti...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.1981.tb00523.x
更新日期：1981-11-01 00:00:00
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journal_title：Journal of oral rehabilitation
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更新日期：2008-01-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
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更新日期：2018-12-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
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更新日期：2020-05-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.1990.tb01413.x
更新日期：1990-09-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.1999.00407.x
更新日期：1999-06-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.2009.01986.x
更新日期：2009-09-01 00:00:00
abstract：:In the literature, most researchers evaluate individuals' nutritional status and chewing ability by types of foods chosen or blood test. However, most of previous researches enrolled small sample size and the results might be influenced by personal preference of foods as well as the individuals' response to invasive e...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/joor.12115
更新日期：2014-02-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.2002.00862.x
更新日期：2002-07-01 00:00:00
abstract：:A random probability sample of 2667 United Kingdom (UK) addresses was selected in a multistage sampling process. Participants were interviewed about their oral health status--number of teeth possessed and denture status. In addition information was collected about their socio-demographic characteristics (age, gender, ...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.2002.00827.x
更新日期：2002-03-01 00:00:00
abstract：:The purpose of this study was to clarify whether the reverse cycle during chewing is abnormal in children with primary dentition. Children with normal primary dentition (N = 23; 5.5 +/- 0.8 years) and female adults (N = 25; 20.7 +/- 1.9 years) participated in this study. Chewing movement was recorded using an opto-ele...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.2009.02006.x
更新日期：2010-01-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/joor.12220
更新日期：2015-01-01 00:00:00
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journal_title：Journal of oral rehabilitation
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journal_title：Journal of oral rehabilitation
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更新日期：2012-01-01 00:00:00
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pub_type： 杂志文章,随机对照试验
doi：10.1111/j.1365-2842.2009.01965.x
更新日期：2009-07-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章,多中心研究
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更新日期：2010-10-01 00:00:00
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journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.2006.01719.x
更新日期：2007-04-01 00:00:00
abstract：:The influence of head posture on movement paths of the incisal point (IP) and of the mandibular condyles during free open-close movements was studied. Ten persons, without craniomandibular or cervical spine disorders, participated in the study. Open close mandibular movements were recorded with the head in five postur...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.2000.00518.x
更新日期：2000-04-01 00:00:00
abstract：:One of the main problems for aged people is that of having a balanced diet, improved by correct conditioning of the alimentary bolus. Does the masticatory status influence the appearance of gastrointestinal disorders? Such a question justifies the present study. The present work concerned all the patients (211) of eig...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.2001.00730.x
更新日期：2001-07-01 00:00:00
abstract：:The purpose of this study was to determine whether performance differences existed in subjects' self-generated bite force discrimination ability using maxillary and mandibular central incisors, canines, premolars and first molars. Two separate studies were conducted: (i) to assess whether performance differences exist...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.1989.tb01374.x
更新日期：1989-11-01 00:00:00
abstract：:Head flexion and extension movements near the natural head position (NHP) were analysed for the location of the mean instantaneous centre of rotation (ICR). Forty-six healthy young adults (30 women and 16 men) with sound dentitions, free from cranio-cervical disorders, performed habitual movements that were automatica...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1046/j.1365-2842.1997.d01-300.x
更新日期：1997-05-01 00:00:00
abstract：:This study examined the differences in the masticatory function of patients with temporomandibular disorder (TMD) in Korea. The experimental groups were as follows: 23 patients with painful arthralgia classified as pain group according to the research diagnostic criteria for temporomandibular disorder (RDC/TMC) and 28...
journal_title：Journal of oral rehabilitation
pub_type： 杂志文章
doi：10.1111/j.1365-2842.2010.02179.x
更新日期：2011-07-01 00:00:00
