Abstract:
:The relationship between isotonic jaw-opening and jaw-closing muscle function was studied using a newly developed apparatus which enables load and velocity to be detected simultaneously. The following results were obtained from 17 male adults (age range 22-32 years) without any occlusal dysfunction. (i) The force-velocity relationship in jaw-opening and jaw-closing muscles was represented by a hyperbolic curve, which fitted well with Hill's equation. (ii) The theoretical maximum force obtained by extrapolation from regression was 32.55 +/- 4.98 kg for jaw opening and 35.74 +/- 4.52 kg for jaw closing. (iii) The theoretical maximum velocity obtained by extrapolation from regression was 456.70 +/- 183.27 mm s-1 for jaw opening and 372.77 +/- 141.67 mm s-1 for jaw closing. (iv) The maximum mechanical power (Pmax) calculated from the product of the force and velocity was 772.20 +/- 182.65 kg.mm s-1 for jaw opening and 708.68 +/- 128.14 kg.mm s-1 for jaw closing. (v) The Pmax exerted by individual subjects was approximately 12-34% of the maximum possible force (Fmax) calculated from the force and velocity, in both jaw opening and jaw closing. There were no statistically significant differences between jaw opening and jaw closing with regard to any isotonic muscle functions. In other words, the results of this study strongly indicated a substantial balance between isotonic jaw-opening and jaw-closing muscle function in the subjects who were investigated.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Watanabe K,Shimizu K,Nakata S,Watanabe Mdoi
10.1111/j.1365-2842.1991.tb00045.xsubject
Has Abstractpub_date
1991-03-01 00:00:00pages
169-77issue
2eissn
0305-182Xissn
1365-2842journal_volume
18pub_type
杂志文章abstract::Twenty-one methylmethacrylate screw implants were inserted in the jaws of three Labrador dogs. Clinical, radiographic, microscopic and fluorescence microscopic examinations were performed. Direct bone-implant contact was found in all firm implants, and the density of the alveolar bone increased towards the screw surfa...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1975.tb00916.x
更新日期:1975-07-01 00:00:00
abstract::An I-bar clasp is one of the most popular direct retainers for distal-extension removable partial dentures. However, no adequate information is available on preferable shape as determined by biomechanics. This study aimed (1) to investigate, by finite element analysis (FEA), the dimensions and stress of I-bar clasps h...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2001.00673.x
更新日期:2001-05-01 00:00:00
abstract:BACKGROUND:Masticatory movement occurs complicatedly and bilaterally. Although the tongue plays an important role in mastication, bilateral tongue function during mastication has not been clarified yet. OBJECTIVE:To investigate the effect of food properties on posterior tongue activity and coordination of muscles bila...
journal_title:Journal of oral rehabilitation
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更新日期:2020-12-15 00:00:00
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journal_title:Journal of oral rehabilitation
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doi:10.1046/j.1365-2842.2003.01050.x
更新日期:2003-02-01 00:00:00
abstract::The effects of mechanical stimulation of denture-bearing mucosa on the perception of mandibular position was tested in five patients wearing dentures. In order to produce mucosal stimulation of different intensities, five types of a punctate stimulus plate each having a different number of raised points was used. A hy...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1992.tb01494.x
更新日期:1992-11-01 00:00:00
abstract::A clinical study of the use of root abutments as an aid to the support of complete dentures is presented. This technique offers a realistic alternative for patients who are reluctant to face the loss of their remaining natural teeth and the wearing of complete dentures. The abutments enhance the support and stability ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1976.tb00954.x
更新日期:1976-07-01 00:00:00
abstract::The placement of dental implants in the molar region of the maxilla is often difficult because of insufficient bone volume and the inferior bone quality. In order to avoid these limitations, the pillar of bone, which is composed of the maxillary tuberosity, the pyramidal process of the palatine bone and the pterygoid ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2001.00741.x
更新日期:2001-02-01 00:00:00
abstract::The purpose of this study was to examine the relationship between masticatory performance and maximal occlusal force in dentate subjects, using test foods of varying hardness. Subjects were 20 young males with natural dentitions. Gummy jellies with two different degrees of hardness have been used as test foods to eval...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2003.01009.x
更新日期:2003-03-01 00:00:00
abstract::This study examined properties of four composite veneering materials polymerized with two different photo-curing units for the purpose of evaluating curing performance of the combination of composite material and curing unit. Two microfilled (Dentacolor and Thermoresin LC II) and two hybrid (Cesead II and Solidex) com...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
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更新日期:1998-05-01 00:00:00
abstract::Titanium is used to fabricate spherical and bar attachments for overdentures on osseointegrated implants. This in vitro study investigated the long-term effects of commercially pure titanium on the retention force of telescope crowns with conical interface. Combinations of various materials for the inner and outer cro...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1996.tb00866.x
更新日期:1996-06-01 00:00:00
abstract::Surface electromyography was used to study the function of the anterior temporal, surface masseter, deep masseter and anterior digastric muscles of 14 patients after complete rehabilitation of occlusion with fixed prostheses and/or removable partial prostheses. All patients had a balanced occlusion with protection by ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1995.tb00211.x
更新日期:1995-01-01 00:00:00
abstract::As one of the dental differentiations in The Netherlands, temporomandibular disorders (TMD) focuses on the diagnosis and treatment of pain and dysfunction of the masticatory system. Bruxism (i.e. tooth clenching and/or grinding) is thought to play an important aetiological role in TMD. Among others, bruxism may result...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.0305-182X.2003.01244.x
更新日期:2004-03-01 00:00:00
abstract::Acrylic resin dentures may have cytotoxic effects on oral soft tissues. However, there is sparse data about the cytotoxic effect of fibre-reinforced acrylic resin denture base materials. The purpose of this in vitro study was to determine the effect of two fibre impregnation methods on the cytotoxicity of a glass and ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2006.01648.x
更新日期:2006-09-01 00:00:00
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::The aim of this study was to evaluate denture satisfaction over a 1 year period after extraction of the last teeth. Seventy-four patients who required immediate denture therapy in the mandible were randomly treated, (1) with complete immediate dentures (22); (2) with immediate overdentures on two lower canines without...
journal_title:Journal of oral rehabilitation
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1995-11-01 00:00:00
abstract::The chewing and swallowing activity of jaw-closing muscles was studied longitudinally in 30 partially edentulous subjects who were provided with an immediate complete upper and a partial lower denture. Electromyographic recordings of the anterior temporal and masseter muscles were obtained during habitual chewing of a...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1991.tb00060.x
更新日期:1991-07-01 00:00:00
abstract::The influence of porcelain thickness and opacity on the polymerization of two dual activated (microfine and hybrid) and one light irradiated (hybrid) resin cements was assessed by hardness measurements. The surface microhardness values of the upper and lower surface of 1 mm thick resin cement specimens were determined...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1994.tb01171.x
更新日期:1994-09-01 00:00:00
abstract::Oral food perception depends on somatosensory information that includes taste and can be modified by oral components and/or functions such as mastication. The purpose of this study was to describe the interplay between oral health, mastication and taste. A review according to the Preferred Reporting Items for Systemat...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
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更新日期:2017-12-01 00:00:00
abstract::To reveal the acoustic characteristics associated with hypernasality and to ascertain their correlation to the severity of hypernasality, 30 speech samples produced by 15 maxillectomy patients were acoustically analysed with and without an obturator prosthesis in place. The isolated, sustained Japanese vowel /i/ was u...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
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更新日期:2000-08-01 00:00:00
abstract::An electromyographic study of the masseter and anterior temporal muscles was performed on fifteen bruxism patients with clinical symptoms such as muscle pain, fatigue and tenderness. The slopes of the voltage tension (V/T) curves (calculated as the value of the relative inclination between the integrated electromyogra...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1982.tb00541.x
更新日期:1982-03-01 00:00:00
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journal_title:Journal of oral rehabilitation
pub_type: 临床试验,杂志文章
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更新日期:1996-09-01 00:00:00
abstract::There is a paucity of guidelines for the dental profession to assess failure of endodontic therapy. While a successful treatment can be well defined by the absence of apical periodontitis and clinical symptoms after a period of observation, failed treatment has escaped a distinct standing over the years. This article ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
doi:10.1111/joor.12423
更新日期:2016-10-01 00:00:00
abstract::The purpose of this study was to determine the effect of simulated ageing on the physical properties of some soft denture liners. The hardness, tensile strength and percentage elongation values were determined before and after ageing treatment. At the end of the experimental ageing process softening was observed only ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.1999.00434.x
更新日期:1999-09-01 00:00:00
abstract::This paper explores seven different factors which should be considered when prescribing the lower anterior prosthesis: alignment as seen from the incisal; height of the incisal edges; degree of irregularity of the teeth; character of the incisal edge; height of the cuspid; mesio-incisal angle of the cuspid; and ridge ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1983.tb00130.x
更新日期:1983-07-01 00:00:00
abstract::The aim of this in vitro study was to evaluate the yield strengths of glass fibre-reinforced composite (FRC) posts and zirconia dioxide ceramic (ZDC) posts. Tapered glass FRC posts (DentinPost) and ZDC posts (Cerapost) of three sizes in diameter (ISO 50, 90, 110) were used for bending tests. Conventional prefabricated...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2006.01526.x
更新日期:2006-01-01 00:00:00
abstract::We aimed to investigate mastication predominance in healthy dentate individuals and patients with unilateral posterior missing teeth using objective and subjective methods. The sample comprised 50 healthy dentate individuals (healthy dentate group) and 30 patients with unilateral posterior missing teeth (partially ede...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12403
更新日期:2016-08-01 00:00:00
abstract::Two chemically different glass ionomer cements (Ketac Fil and ChemFil II Caps) and three different methods of conditioning the surface for repair were evaluated. Specimens of each material were prepared, aged and sectioned. The cut surfaces were treated with either phosphoric acid, polyacrylic acid or a combination of...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1994.tb01180.x
更新日期:1994-11-01 00:00:00
abstract::There is an increase in elderly dentate adults who will retain more of their natural teeth, and thus the demand for restorative dental services among them will be high. In Finland, systematic dental care for old people has not been organized. Health centres have mainly targeted the development of dental care for child...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2002.00903.x
更新日期:2002-05-01 00:00:00
abstract::Earlier work revealed that creep of a particular dental amalgam can be described by the model F(t) = F0 exp (t/t0)m. Here F(t) is the creep compliance at time t, whereas F0, t0 and m are constants of the model. In the previous study only three alloys were used. It was the aim of this study to investigate the factor al...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1983.tb00129.x
更新日期:1983-07-01 00:00:00
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 ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2007.01746.x
更新日期:2008-01-01 00:00:00