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 Heliomolar, and Bis-MPEPP-based Marathon One. The solutions used were: 99.9% acetic acid, 99% propionic acid and 75% ethanol. Specimens (4 mm diam. x 2 mm thick) were stored at 37 degrees C in 3 mL of solution for up to 30 days. Gas chromatography/mass spectrometry was used to characterize the leached moieties and DTS of the specimens after immersion was evaluated. Data were analysed using ANOVA and Tukey LSD test. The eluted substances were not all the same in different solutions and composites but mostly increased with immersion time, and included diluents (TEGDMA and decamethacrylate) and some additives, such as an ultra-violet stabilizer (TINUVINP), plasticizers (dicyclohexyl phthalate and bis(2-ethylhexyl) phthalate), initiator (triphenyl stibine), coupling agent (gamma-methacryloxypropyl trimethoxysilane), and phenyl benzoate. The chief polymerizing monomers were not found. More kinds of components were found in the acetic acid and ethanol groups studied. The fewest kinds and quantities of leached moieties were found for Bis-GMA specimens and then Bis-GMA/UDMA ones, most of which are diluent agents. Bis-MPEPP specimens leached the most substances, which were composed mostly of a short phenyl group chain structure. The BisGMA composite showed the highest DTS (54.8 +/- 5.7 MPa), which was not greatly affected by the length of storage. Bis-GMA/UDMA (36.2 +/- 6.8 MPa) and Bis-MPEPP (26.1 +/- 4.5 MPa) composites were significantly reduced (P < 0.05) after 30 days storage in the ethanol (35-50%), in the propionic acid (25-30%), and in the acetic acid (40-60%). Irreversible processes such as the leaching of components occur in fluids simulating an oral environment, which may contribute to irreversible material degradation, especially for non-Bis-GMA-based composites.
journal_name
J Oral Rehabiljournal_title
Journal of oral rehabilitationauthors
Lee SY,Huang HM,Lin CY,Shih YHdoi
10.1046/j.1365-2842.1998.00284.xsubject
Has Abstractpub_date
1998-08-01 00:00:00pages
575-88issue
8eissn
0305-182Xissn
1365-2842journal_volume
25pub_type
杂志文章abstract::The summarized scanning electron microscopic-supported micromorphologic data of a 10-year longitudinal clinical study of GIC/Hybrid composite posterior restorations is reported. The aim of this study was to compare the results to USPHS-compatible clinical criteria of the CPM index and to analyse the deterioration patt...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2004.01329.x
更新日期:2004-10-01 00:00:00
abstract::To examine the stiffness of the masseter muscle using sonographic elastography and to investigate its relationship with the most comfortable massage pressure in the healthy volunteers. In 16 healthy volunteers (10 men and 6 women), the Masseter Stiffness Index (MSI) was measured using EUB-7000 real-time tissue elastog...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2009.01977.x
更新日期:2009-09-01 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::This research evaluated the relationship between balancing side molar contacts and chewing patterns measured with a jaw movement analyser and multi-channel electromyography (EMG) of the masticatory muscles. Nine healthy subjects with relatively normal occlusions participated in the experiment and were divided into tho...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.1997.00553.x
更新日期:1997-09-01 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::Obstructive sleep apnoea syndrome (OSAS) is associated with several sleep disorders and sleep-related problems. Therefore, the aim of this study was to compare the effects of a mandibular advancement device (MAD) with those of nasal continuous positive airway pressure (nCPAP) on self-reported symptoms of common sleep ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,随机对照试验
doi:10.1111/joor.12505
更新日期:2017-06-01 00:00:00
abstract::The aims of this study were to observe the release of fluoride ions (F-) from GC-Fuji Lining-LC(R) glass-ionomer cement, to assess the diffusion process, and to measure fluoride diffusivity (D) in the set cement. Specimens of various dimensions and shapes, ranging from discs to cylindrical rods, were fabricated for bo...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2000.00554.x
更新日期:2000-07-01 00:00:00
abstract::This paper describes the application of a hydraulic intraoral jig to the establishment of the vertical dimension of occlusion for full denture construction. The device enables the patient to establish an occlusal height which is most comfortable without the intervention or guidance of the dentist. Six patients for who...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1988.tb00174.x
更新日期:1988-07-01 00:00:00
abstract::The periodontal regeneration of interproximal bone defects of the posterior teeth produced by guided tissue regeneration (GTR), with expanded Polytetrafluoroethylene barrier membranes and conventional therapy, was clinically evaluated in 20 intrabony periodontal defects in 10 patients. The material included the presen...
journal_title:Journal of oral rehabilitation
pub_type: 临床试验,杂志文章
doi:10.1046/j.1365-2842.1996.d01-206.x
更新日期:1996-09-01 00:00:00
abstract::The aim of this study was to examine whether sectioning of the lateral branches of the hypoglossal nerves (l-XII) in young male rats affects regulation of body weight, food intake and water intake in their period of growth by using a linear fixed effects model or not. Three groups of the rats were prepared according t...
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::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::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::The present study was designed to analyse the average depth of the microporosity of a nickel-chromium (Ni-Cr) system alloy (Verabond II). The metal surface was subject to one of the following surface treatment: (i) Electrolytic etching in nitric acid 0.5 N at a current density of 250 mA cm(-2); (ii) chemical etching w...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2003.01102.x
更新日期:2003-05-01 00:00:00
abstract::Although tooth loss with age has been extensively investigated, there appears to be no literature on the relationship of age to remaining mandibular third molars. The study showed that as age increases so does the frequency of absent vertically erupted mandibular third molars. However, no correlation was found between...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.1997.00195.x
更新日期:1997-12-01 00:00:00
abstract::A total of 30 denture-wearing patients with burning mouth syndrome (BMS) referred to a Pain Clinic Unit and 26 age- and sex-matched control subjects were examined and compared with respect to general health factors and denture function. The study demonstrated a significantly higher frequency of multiple chronic diseas...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1995.tb00237.x
更新日期:1995-12-01 00:00:00
abstract::The preservation and restoration of severely weakened pulpless teeth is a difficult and relatively unpredictable procedure. This study evaluated the resistance to fracture of experimentally weakened bovine roots internally reconstructed with different filling materials in combination with prefabricated post compared w...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2003.00990.x
更新日期:2003-06-01 00:00:00
abstract::A longitudinal radiographic cephalometric and electromyographic investigation was performed on eighteen subjects provided with an immediate complete upper and a partial lower denture. The observation stages were: before final extractions and 7 weeks, 6 months and 1 year after denture insertion. The cephalometric analy...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1986.tb00665.x
更新日期:1986-07-01 00:00:00
abstract::Fluorinated Bis-GMA was synthesized and used with other commercially available fluorinated monomers and diluents to prepare hydrophobic composites. The composites were formulated as one-paste systems and were polymerized using blue light. Mechanical properties and water-related qualities were determined. Fluorination ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1996.tb01227.x
更新日期:1996-03-01 00:00:00
abstract::The short-term effect (3-6 weeks) of the use of a stabilization splint was investigated in a group of 35 myogenous craniomandibular disorder patients. The patients were clinically examined and surface EMG recordings of the temporal and masseter muscles were made during clenching in the intercuspal position (ICP), imme...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1995.tb00789.x
更新日期:1995-05-01 00:00:00
abstract::Restoring broken down non-vital teeth implies in general the provision of a post and core foundation. Many materials and techniques have been introduced for this purpose in recent years. In this article the advantages and disadvantages of the cast and the non-cast post and core are discussed. The problems involved wit...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1987.tb00687.x
更新日期:1987-01-01 00:00:00
abstract::A technique has been developed for the preparation of test bars of the different types of aluminous porcelains using the standard laboratory procedures for the preparation of aluminous porcelain jacket crowns. Up to now the investigation of the properties of dental porcelain has been conducted using test specimens pro...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.1981.tb00489.x
更新日期:1981-03-01 00:00:00
abstract::The activity of anterior temporal muscle, the number of tooth contacts, and total duration of closure during maximal and habitual clenching were studied in varied chair positions. Fifteen subjects were evaluated. The means for the muscle activity of anterior temporal muscle during habitual clenching were 63.5-73.5% of...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:
更新日期:1997-03-01 00:00:00
abstract::The aim of this study was to evaluate the association between self-reported sleep bruxism and the age, gender, clinical subtypes of temporomandibular disorders (TMD), pain intensity and grade of chronic pain in patients previously diagnosed with TMD. Thousand two-hundred and twenty patients of the Andalusian Health Se...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.12172
更新日期:2014-08-01 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::Given increased tooth retention into later years of life, dentists face increasing challenges in maintaining teeth with extensive composite restorations. Accompanying the increase in placement of composite restorations in general practice, there has also been increased evidence that repair, rather than replacement, of...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2011.02260.x
更新日期:2012-03-01 00:00:00
abstract:BACKGROUND:Tongue muscle strength is important for swallowing but decreases with age, in association with reduced skeletal muscle mass. However, the relationships between pharyngeal dynamics and both skeletal muscle mass and tongue muscle strength are unknown. OBJECTIVE:To investigate the effect of reductions in tongu...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/joor.13120
更新日期:2021-02-01 00:00:00
abstract::The occlusal contact area wear resistance of two new composite restoratives (Z250 and P60) was investigated and compared with two existing materials (Silux and Z100) using a reciprocal compression-sliding test apparatus. Six wear specimens were made for each material and subjected to wear testing at 20 MPa with artifi...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1046/j.1365-2842.2002.00814.x
更新日期:2002-02-01 00:00:00
abstract::The aim of this study was (i) to examine the effect of light tooth contact as in diurnal tooth clenching on the tactile detection threshold (TDT), the filament-prick pain detection threshold (FPT) and the pressure pain threshold (PPT) in the oro-facial region and (ii) to examine the possible gender difference in this ...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章
doi:10.1111/j.1365-2842.2009.01961.x
更新日期:2009-07-01 00:00:00
abstract::The aim of this systematic review of the literature was to assess the scientific evidence for detectable correlations between the stomatognathic system and whole-body posture and to provide information on the relevance of posturography as a diagnostic aid in dentistry. A literature survey was performed using the Medli...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,评审
doi:10.1111/j.1365-2842.2009.02019.x
更新日期:2009-12-01 00:00:00
abstract:OBJECTIVE:A network meta-analysis (NMA) of randomised clinical trials (RCTs) was performed aiming to compare the treatment outcome of dry needling, acupuncture or wet needling using different substances in managing myofascial pain of the masticatory muscles (TMD-M). METHOD:An electronic search was undertaken to identi...
journal_title:Journal of oral rehabilitation
pub_type: 杂志文章,meta分析,评审
doi:10.1111/joor.12960
更新日期:2020-07-01 00:00:00