Abstract:
:The design of dental superstructures influences the loading on dental implants and the deformation of the anterior interforaminal bone in an edentulous mandible. This deformation causes stress in the bone around the implants and may lead to bone resorption and loss of the implant. The stress distribution around dental implants in an edentulous mandible was calculated by means of a three-dimensional, finite-element model of the anterior part of the jaw. This model was built from data obtained from slices of a single human mandible and was provided with four endosseous implants in the interforaminal region. The implants were either connected with a bar or remained solitary. The solitary implants or the bars were loaded either uniformly or non-uniformly. In case of a non-uniform distribution, either the central bar or the central implants were loaded or the lateral bars or the lateral implants were loaded. The most extreme stresses in the bone were always located around the neck of the implant. In the case of the uniform distribution of the loading there were more or less equal extreme principal stresses around the central and lateral implants. If the load was not uniformly distributed on the superstructure then the implant that was nearest to the place of loading showed the highest stress concentration; with connected implants there was a reduction in the magnitude of the extreme principal stresses compared to solitary implants.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Meijer HJ,Starmans FJ,Steen WH,Bosman Fdoi
10.1046/j.1365-2842.1996.d01-185.xsubject
Has Abstractpub_date
1996-11-01 00:00:00pages
757-63issue
11eissn
0305-182Xissn
1365-2842journal_volume
23pub_type
杂志文章abstract::This study consists of 147 subjects treated with fixed prostheses 4 years previously. Occlusal analyses were made, and the fillings, crowns, and pontics on the occlusal surfaces were recorded. Occlusal interferences were found in 42.6% of the fillings, in 34.9% of the crowns, in 27.0% of the pontics, and in 24.6% of t...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1986.tb01301.x
更新日期:1986-09-01 00:00:00
abstract:BACKGROUND:Retraction of the posterior tongue facilitates bolus formation, food transfer and Stage II transport in chewing and swallowing. Surface electromyography of the neck region (N-EMG) enabled the evaluation of muscle function at the posterior tongue. Although previous studies showed that food hardness increased ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12774
更新日期:2019-06-01 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::Age, health status and disease treatments are thought to influence salivary flow. In this study, age effect on salivation was compared in non-feeding (at rest and during parafilm chewing) and feeding (during meat chewing) conditions for two groups of healthy subjects, 25 young subjects (mean age 27.4 years) and 20 old...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2004.01253.x
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to compare the effectiveness of two types of treatment (counseling program versus counseling program plus jaw exercises) to improve the quality of life of patients with disc displacement with reduction (DDWR). MATERIALS AND METHODS:Patients were divided into two groups. The test gro...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.13126
更新日期:2020-11-18 00:00:00
abstract::A photographic technique was used to determine the instantaneous centre of rotation of a fixed unilateral distal extension partial denture and the teeth to which it was attached. The teeth involved were the lower canine and first premolar. When the two crowns were splinted together to provide support, both vertical an...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1986.tb00677.x
更新日期:1986-11-01 00:00:00
abstract::To determine the degree of surface roughness of glass-ionomer cements (GICs) and polyacid-modified resin composite (PAMRC) after polishing and immersion in various foodstuffs. Three tooth-coloured restorative materials were used: a PAMRC (F2000), a conventional glass-ionomer cement (CGIC) (Fuji IX) and a resin-modifie...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2006.01608.x
更新日期:2007-01-01 00:00:00
abstract::Variability in magnitude of deglutitional hyolaryngeal excursion in patients with dysphagia suggests that it does not adequately represent the kinematics of swallowing difficulties or recovery following rehabilitation. On the other hand, reduced hyolaryngeal excursion velocity has been reported in patients with dyspha...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12259
更新日期:2015-05-01 00:00:00
abstract::The oxide layer that covers a titanium surface is extremely stable and appears to have excellent biocompatibility, which can result in successful osseointegration. The aim of this study was to analyse the characteristics of an oxide layer formed by anodic oxidation (anodization), and to evaluate the extent of bone hea...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2006.01688.x
更新日期:2007-07-01 00:00:00
abstract::Mandibular movement during lateral articulatory movements was studied in young subjects with no apparent dental disease or malocclusion. A closed circuit television movement detector was used. Signals of each vector of movement were combined in pairs to provide envelopes of movement in three planes, mutually at right ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1984.tb00559.x
更新日期:1984-03-01 00:00:00
abstract::In the 90s, there was a general belief that mechanical overloading was one of the main reasons for late implant failure. This triggered research to assess the role of mechanical loading on the establishment and the maintenance of oral implant osseointegration. Animal experimental studies indeed suggested the potential...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
doi:10.1111/joor.12195
更新日期:2014-10-01 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
pub_type: 杂志文章
doi:10.1111/joor.13135
更新日期:2020-12-15 00:00:00
abstract::Four cushion adhesives (Fittydent I; Fittydent II, introduced as an advanced formula; Protefix; and Seabond) were compared clinically through patients subjective evaluations. Maxillary dentures of 32 patients were relined and the mandibular dentures were scored by Kapur index before the application of different treatm...
journal_title:Journal of oral rehabilitation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2842.1998.00220.x
更新日期:1998-03-01 00:00:00
abstract::Measurements were made of the spectral distribution of light emitted from five commercially available visible-light polymerization units. All emissions peaked between 400 and 500 nm but the 'functional' irradiance varied by a factor of 20 for the sources investigated. Timer checks revealed errors of up to 20%. Light o...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1986.tb00653.x
更新日期:1986-05-01 00:00:00
abstract::Masticatory muscle activity during teeth clenching is affected by occlusal pattern. However, few studies have performed simultaneous evaluation of all masticatory activities during teeth clenching under various occlusal conditions. The aim of this study was to use muscle functional magnetic resonance imaging (mfMRI) t...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12404
更新日期:2016-08-01 00:00:00
abstract::The study aimed to compare the locations of the hinge axis and the kinematic centre in both clicking and non-clicking TMJs. The six degrees of freedom optoelectronic jaw movement recording system OKAS-3D was used to record open/close movements in 10 asymptomatic subjects and 30 subjects with a clicking joint. Movement...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.1999.00441.x
更新日期:1999-08-01 00:00:00
abstract::This study reports a prospective clinical trial comparing a carbon fibre reinforced carbon (CFRC) endodontic post with a conventional prefabricated post. Twenty-seven single rooted maxillary anterior teeth in 18 patients (nine males and nine females; age range 18-60 years) were restored either with a CFRC post or a wr...
journal_title:Journal of oral rehabilitation
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1046/j.1365-2842.2003.01178.x
更新日期:2003-08-01 00:00:00
abstract::There are no studies that have compared the clinical and radiographic status around immediately loaded (IL) and conventional loaded (CL) implants placed in patients with type 2 diabetes mellitus (T2DM). The aim was to compare the clinical and radiographic status around IL and CL implants placed in T2DM patients. One h...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12466
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND:Juvenile recurrent parotitis (JRP) is the second-most common childhood disease of the salivary glands after mumps. Since popularisation of mumps vaccination, children suffered from JRP more often, and the aetiology remains unclear. Chinese children had the habit of soft foods due to the special dietary habit...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12921
更新日期:2020-04-01 00:00:00
abstract::Forces required by complete dentures for penetrating some commonly used food items were measured experimentally. These forces were compared with the maximal bite forces of twenty-seven complete denture wearers. Food items that required the greatest forces in direct closure were rye bread (167 N), raw carrot (118 N), b...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1987.tb00757.x
更新日期:1987-11-01 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::Camphorquinone (CQ) is widely used as a photo-initiator in dental materials; however, its cytotoxicity against human pulp fibroblasts (HPF) and particularly the effects of 2-dimethylaminoethyl methacrylate (DMA), a reducing agent and visible light (VL) irradiation on it remain unknown. So we investigated the cytotoxic...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2004.01357.x
更新日期:2004-12-01 00:00:00
abstract::Using a cast measuring technique, the change in contour of the residual maxillary alveolar ridge of patients who have worn dentures for a number of years and are then fitted with new dentures, has been investigated. The study confirmed that even after 30 years of denture wearing, further bone resorption may occur bene...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1980.tb00441.x
更新日期:1980-05-01 00:00:00
abstract::Dysphagia rehabilitation in the elderly includes direct therapy to alter the three-dimensional shape of the oropharynx so that food boluses can pass safely through the poorly functioning pharynx. Alteration of the mandibular position is thought to affect oropharyngeal shape, but this relationship remains poorly unders...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2011.02263.x
更新日期:2012-04-01 00:00:00
abstract::The aim of this study was to determine if the abrasive effect on dentine of two commercially available toothpastes, known to vary in their in vitro abrasive levels, can be differentiated in an in situ model after 10 days, assessed by contact profilometry. This was a single centre, single blind, randomized, split mouth...
journal_title:Journal of oral rehabilitation
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
abstract::The study assessed whether psychological and socio-demographic factors, including somatisation, depression, stress, anxiety, daytime sleepiness, optimism, gender and age, are associated with pain intensity and pain-related disability in patients with temporomandibular disorders (TMDs). In total, 320 TMD patients were ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12479
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND:Severe malocclusions may cause functional and aesthetic problems and symptoms of temporomandibular disorders (TMD). Studies have investigated association between malocclusions and TMDs and shown controversial findings. OBJECTIVE:Purpose of this investigation was to examine the prevalence of TMD sub-diagnose...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12790
更新日期:2019-07-01 00:00:00
abstract::Extensive investigation into the mechanism of chronic obstructive sialadenitis (COS) calls for a reliable model that mimics the onset and progression of the disease. Duct obstruction is closely correlated with COS, and partial duct obstruction is usually observed in COS. Partial ligation of ducts or vessels is a valid...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12711
更新日期:2018-12-01 00:00:00
abstract::Determining the factors associated with NCCLs and DH in populations could guide the implementation of specific preventive measures. This study evaluated the clinical features and factors associated with non-carious cervical lesions (NCCLs) and dentin hypersensitivity (DH) in a Brazilian population. The participants we...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12469
更新日期:2017-02-01 00:00:00
abstract::Three human subjects performed tooth grinding for 25 min, and after 20 h biopsies of the right and left masseter muscles were examined for their contents of mast cells. In comparison with specimens from a control group of three subjects, there was an increase of degranulating mast cells in muscles that had performed b...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1978.tb00387.x
更新日期:1978-01-01 00:00:00