Abstract:
:Dental modeling resins have been developed for use in areas where highly precise resin structures are needed. The manufacturers claim that these polymethyl methacrylate/methyl methacrylate (PMMA/MMA) resins show little or no shrinkage after polymerization. This study examined the polymerization shrinkage of five dental modeling resins as well as one temporary PMMA/MMA resin (control). The morphology and the particle size of the prepolymerized PMMA powders were investigated by scanning electron microscopy and laser diffraction particle size analysis, respectively. Linear polymerization shrinkage strains of the resins were monitored for 20 minutes using a custom-made linometer, and the final values (at 20 minutes) were converted into volumetric shrinkages. The final volumetric shrinkage values for the modeling resins were statistically similar (P > 0.05) or significantly larger (P < 0.05) than that of the control resin and were related to the polymerization kinetics (P < 0.05) rather than the PMMA bead size (P = 0.335). Therefore, the optimal control of the polymerization kinetics seems to be more important for producing high-precision resin structures rather than the use of dental modeling resins.
journal_name
Biomed Res Intjournal_title
BioMed research internationalauthors
Kwon TY,Ha JY,Chun JN,Son JS,Kim KHdoi
10.1155/2014/914739subject
Has Abstractpub_date
2014-01-01 00:00:00pages
914739eissn
2314-6133issn
2314-6141journal_volume
2014pub_type
杂志文章abstract::There were no systematic researches about autophagy-related long noncoding RNA (lncRNA) signatures to predict the survival of patients with colon adenocarcinoma. It was necessary to set up corresponding autophagy-related lncRNA signatures. The expression profiles of lncRNAs which contained 480 colon adenocarcinoma sam...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2020/9807918
更新日期:2020-09-02 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2014/398960
更新日期:2014-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2015/854056
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/201475
更新日期:2013-01-01 00:00:00
abstract::Nematodes infections are responsible for debilitating conditions and economic losses in domestic animals as well as livestock and are considered an important public health problem due to the high prevalence in humans. The nematode resistance for drugs has been reported for livestock, highlighting the importance for de...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/879263
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2020/6174936
更新日期:2020-07-28 00:00:00
abstract::Following cerebral ischemia/reperfusion (I/R) injury, a series of pathophysiological processes are stimulated in both the central nervous system (CNS) and the periphery, including, but not limited to, the peripheral immune and endocrine systems and underregulation of the neuroendocrine-immune network. Glutamate (Glu) ...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2018/6316059
更新日期:2018-07-19 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/846062
更新日期:2015-01-01 00:00:00
abstract::Ischemia-reperfusion injury (IRI) is a major contributor to acute kidney injury (AKI). At present, there are no effective therapies to prevent AKI. The aim of this study was to analyse whether valproic acid (VPA), a histone deacetylase inhibitor with anti-inflammatory properties, prevents renal IRI. Male Wistar rats w...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/5985903
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/214618
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/859845
更新日期:2015-01-01 00:00:00
abstract::Aim. To investigate the expression of miR-940 in the hepatocellular carcinoma (HCC) and its impact on function and biological mechanism in the HCC cells. Methods. Quantitative RT-PCR analysis was used to quantify miR-940 expression in 46 cases of tissues and cells. Transfection of HCC cell lines was performed by miR-9...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/7618342
更新日期:2016-01-01 00:00:00
abstract::The energy generated by an extremely low frequency electromagnetic field (ELF-EMF) is too weak to directly induce genotoxicity. However, it is reported that an extremely low frequency magnetic field (ELF-MF) is related to DNA strand breakage and apoptosis. The testes that conduct spermatogenesis through a dynamic cell...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/567183
更新日期:2014-01-01 00:00:00
abstract::Ablative therapies have been utilized with increasing frequency for the treatment of Barrett's esophagus with and without dysplasia. Multiple modalities are available for topical ablation of the esophagus, but radiofrequency ablation (RFA) remains the most commonly used. There have been significant advances in techniq...
journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2014/642063
更新日期:2014-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/310406
更新日期:2013-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/7582734
更新日期:2019-07-31 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2020/5190587
更新日期:2020-05-20 00:00:00
abstract::The aim of this study was to investigate the efficacy of the sequential combined 585 nm PDL and the 1064 nm neodymium:yttrium-aluminium-garnet laser (PDL/Nd:YAG) in the treatment of surgical scars and to evaluate the short-term effects by in vivo confocal microscopy (RCM) and the long-term effects by clinical assessme...
journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2014/204532
更新日期:2014-01-01 00:00:00
abstract:OBJECTIVE:To assess whether high-molecular-weight proteins excretion predicts outcome and therapy-responsiveness in patients with FSGS and nephrotic syndrome. RESEARCH DESIGN AND METHODS:Thirty-eight patients measured at biopsy fractional excretion of IgG (FEIgG) and urinary α2-macroglobulin/creatinine ratio ( α m/C)....
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/941831
更新日期:2013-01-01 00:00:00
abstract::Mycobacterium bovis causes classic bovine tuberculosis, a zoonosis which is still a concern in Africa. Biofilm forming ability of two Mycobacterium bovis strains was assessed on coupons of cement, ceramic, or stainless steel in three different microbiological media at 37°C with agitation for 2, 3, or 4 weeks to determ...
journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2014/210165
更新日期:2014-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/6451849
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2019/4370258
更新日期:2019-08-06 00:00:00
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journal_title:BioMed research international
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1155/2017/5969657
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/138060
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2013/140327
更新日期:2013-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2016/9140541
更新日期:2016-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章
doi:10.1155/2015/635732
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 临床试验,杂志文章
doi:10.1155/2015/709452
更新日期:2015-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,评审
doi:10.1155/2017/8013575
更新日期:2017-01-01 00:00:00
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journal_title:BioMed research international
pub_type: 杂志文章,随机对照试验
doi:10.1155/2016/6015761
更新日期:2016-01-01 00:00:00