Abstract:
:The translucency and colour of a composite resin are characterized by two wavelength-dependent parameters: the absorption coefficient, K and the scattering coefficient, S. These parameters were calculated according to the Kubelka-Munk (1931) equations for two commercial resins. The calculations were based on reflectance spectra of samples of different thicknesses which were placed on a black and a white background. Employing the values of these parameters, calculated spectra were obtained of samples on the same as well as different backgrounds. The difference between the experimental and the calculated spectra was evaluated in terms of Friele-MacAdam-Chickering (Hemmendinger, 1970) colour differences. The Munsell colour values, corresponding to the spectra were evaluated. It was found that the colour of a resin sample of a specified thickness which is placed on a particular background may be predicted to a fair degree of accuracy from calculations employing the K and S values of the resin and the reflectance spectrum of the background. It has been demonstrated that illuminating the sample at 45 degrees instead of using diffuse illumination, affected the results only to a small extent. The effect of internal reflections at the resin surface on the relfectivity on the sample is discussed. An expression has been derived for computing the reflectivity of a sample on any background from its transmittance and reflectivity on a completely absorbing background.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Grajower R,Wozniak WT,Lindsay JMdoi
10.1111/j.1365-2842.1982.tb01027.xsubject
Has Abstractpub_date
1982-09-01 00:00:00pages
389-99issue
5eissn
0305-182Xissn
1365-2842journal_volume
9pub_type
杂志文章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::Bruxism contributes to the development of temporomandibular disorders as well as causes dental problems. Although it is an important issue in clinical dentistry, no treatment approaches have been proven effective. This study aimed to use electromyogram (EMG) biofeedback (BF) training to improve awake bruxism (AB) and ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,随机对照试验
doi:10.1111/joor.12233
更新日期:2015-02-01 00:00:00
abstract::There have been limited studies of subjective tongue function over long-term follow-up in spite of swallowing and articulation disorders are common complications of glossectomy. To assess long-term subjective swallowing and articulation function after partial glossectomy. A total of 63 patients with the mobile tongue ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12193
更新日期:2014-10-01 00:00:00
abstract::The goals of an international taskforce on somatosensory testing established by the Special Interest Group of Oro-facial Pain (SIG-OFP) under the International Association for the Study of Pain (IASP) were to (i) review the literature concerning assessment of somatosensory function in the oro-facial region in terms of...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,实务指引,评审
doi:10.1111/j.1365-2842.2010.02196.x
更新日期:2011-05-01 00:00:00
abstract::A survey of commercial dental laboratories in Geneva and Vancouver has been carried out using both questionnaires and telephone enquiries. It was concerned with the types of fixed prostheses constructed and the impact of recent technical developments. The results of the study revealed that cosmetic factors played a ma...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1988.tb00160.x
更新日期:1988-05-01 00:00:00
abstract::The histological effects of a temporary crown and bridge material (Scutan) on the pulp of canine teeth of ferrets was investigated at time intervals up to 6 months. After 24 h a moderate to severe pulpal response was observed which persisted up to 6 months. A case of contact sensitivity to Scutan is reported. ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1980.tb00457.x
更新日期:1980-09-01 00:00:00
abstract::Quality control is very important in relation to invasive and lengthy treatments, such as integrated orthodontic and surgical correction of dentofacial deformities. The aim of this cross-sectional study was to compare self-reported somatosensory disturbances and quantitative sensory testing (QST) findings between two ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2010.02059.x
更新日期:2010-05-01 00:00:00
abstract::Recent studies have shown that infraorbital nerve constriction (IoNC)-induced mechanical allodynia has been attenuated by administration of highly purified 150-kDa Botulinum neurotoxin type A (BoNT/A). Here, we extend these studies to determine whether BoNT/A could attenuate IoNC-induced symptoms of thermal hyperalges...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2011.02236.x
更新日期:2012-01-01 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
abstract::The aim of this study was to analyse mastication and the sense of taste in 39 patients submitted to cancer treatment in different areas of the body and to compare these variables with those of 44 control individuals within the same age range. The following aspects were assessed: dental status (DMFT); stimulated and no...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12005
更新日期:2012-12-01 00:00:00
abstract::Signs and symptoms of temporomandibular dysfunction (TMD) and functional recordings were re-examined in subjects, 19-21 years of age, 5 years after the first examination. Thirty-seven subjects had restored dentitions at both examinations (group F), 13 subjects with previously intact dentitions had had fillings in thei...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1991.tb01683.x
更新日期:1991-09-01 00:00:00
abstract::This study investigates the wear resistance of four different types of occlusal splint materials based on two-body wear simulations under wet and dry conditions. Twenty specimens of each splint material (Dentalon Plus, Orthoplast, Biocryl C, and Eclipse), each with a diameter of 16 mm and a thickness of 3 mm, were tes...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2012.02301.x
更新日期:2012-08-01 00:00:00
abstract::The aim of this study was to analyse the leached moieties of dental composites after storage in ethanol and organic acids of plaque and further evaluate the resultant effect on the diametral tensile strength (DTS) of the composites. Three commercial composites were used: Bis-GMA-based Z100, Bis-GMA/UDMA-based Heliomol...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.1998.00284.x
更新日期:1998-08-01 00:00:00
abstract::The aim of this study was to compare the findings on magnetic resonance imaging (MRI) in temporomandibular disorders (TMD) pain patients with clinical diagnoses of myofascial pain or arthralgia/osteoarthritis in combination with myofascial pain according to the Research Diagnostic Criteria for TMD. The temporomandibul...
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::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::summary Ceramic inserts are reported to possibly reduce polymerization shrinkage for posterior resin composite fillings. The aim of the present investigation was to evaluate the effect of different insert systems before and after thermomechanical loading. Sixty sound human third molars received occlusomesial Class II ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,随机对照试验
doi:10.1111/j.1365-2842.2005.01459.x
更新日期:2005-08-01 00:00:00
abstract::Mandibular condyles and temporal fossae were studied in a large Romano-British collection of skulls. The size and shape of the condyles differed from those in previous populations studied. Changes in form or shape of the condyles were age-related and could be correlated to the number of teeth lost on the same side and...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1985.tb01546.x
更新日期:1985-09-01 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::Implant treatment in individuals with periodontitis-associated tooth loss is frequently debated. The objective of the present systematic review was to assess the principles and outcome of implant treatment in periodontitis-susceptible patients. Studies considered for inclusion were searched in MEDLINE (PubMed) and rel...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,meta分析,评审
doi:10.1111/j.1365-2842.2007.01830.x
更新日期:2008-01-01 00:00:00
abstract:OBJECTIVES:This study aimed to clarify the efficacy of a border-moulding procedure with low-flow silicone impression material compared with a conventional compound to complete denture fabrication. It also aimed to evaluate the influence of various functional tasks during the lingual-side moulding procedure regarding th...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12939
更新日期:2020-05-01 00:00:00
abstract::Meniscectomy of the temporomandibular joint (TMJ) was frequently performed until a few years ago but now is seldom employed. This procedure induces important articular modifications but the complete extent of ultrastructural changes is still unknown. Twenty-one Wistar rats were submitted to unilateral meniscectomy. An...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2006.01647.x
更新日期:2006-10-01 00:00:00
abstract::This study aimed to assess possible fluoride uptake by cavity walls following a single application of Duraphat around class V or I amalgam restorations which were inserted in seventeen human premolars in vitro and in vivo. Six cavities were lined with one layer of Copalite before insertion of the restorations. After a...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1980.tb00433.x
更新日期:1980-03-01 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::In a sample of fifteen partially edentulous subjects assigned for immediate complete denture treatment, a correlation analysis was performed between pre-extraction facial morphology determined from lateral cephalograms, and EMG activity of the anterior temporal and masseter muscles in maximal clench and tapping of tee...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1983.tb00105.x
更新日期:1983-03-01 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
abstract::Restorative dental materials are considered biocompatible without exhibiting any bioactive behaviour. The aim of this study was the investigation of surface structure changes on conventional dental ceramics used in metal-ceramic restorations modified by a bioactive glass, after immersion in SBF for various time period...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2003.01072.x
更新日期:2003-09-01 00:00:00
abstract::In this study, the experimental denture base on the hard palate of the molar region of osteoporotic rats was designed to cover without any mechanical pressure or to load continuous pressure (0.5, 1.5 or 3.4 kPa). Experimental osteoporosis was induced by ovariectomy and feeding on a low calcium diet. Histopathological ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2002.00863.x
更新日期:2002-06-01 00:00:00
abstract::Lone standing splinted implant segments are accepted as optimal. However, in the treatment of partial edentulism, clinical reality often predicates the consideration of splinting teeth and implants due to variables of tooth/implant location and available bone support. This article presents a review on biomechanical as...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
doi:10.1046/j.1365-2842.1998.00583.x
更新日期:1998-01-01 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