The Influence of Plastic Light Cure Sheaths on the Hardness of Resin Composite

2009 ◽  
Vol 34 (6) ◽  
pp. 741-745 ◽  
Author(s):  
S. Pollington ◽  
N. Kahakachchi ◽  
R. van Noort
Keyword(s):  
Mechanical Properties ◽  
Infection Control ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Cross Infection ◽  
Restorative Material ◽  
Depth Of Cure ◽  
Light Curing

Clinical Relevance Disposable sheaths are now recommended as a method of cross infection control when light curing resin composite. However, these sheaths may affect the depth of cure of the resin composite, resulting in a compromise of the mechanical properties of the restorative material.

The Influence of Tip Geometry and Distance on Light-curing Efficacy

10.2341/07-94 ◽  
2008 ◽  
Vol 33 (3) ◽  
pp. 325-331 ◽  
Author(s):  
G. Corciolani ◽  
A. Vichi ◽  
C. L. Davidson ◽  
M. Ferrari
Keyword(s):  
Light Source ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Restorative Material ◽  
Entry And Exit ◽  
Depth Of Cure ◽  
Composite Restorations ◽  
Light Curing

Clinical Relevance Among the factors that significantly influence the depth of cure of resin composite restorations—the distance between the tip of the light source and the restorative material—as well as the geometry of the tip, are crucial parameters. Increasing the ratio between the entry and exit diameter of the tip will result in an improvement in the depth of cure for lower distances between the tip of the light source and the restorative material, while decreasing the ratio of the depth of cure, which will be higher for greater distances.

scholarly journals Effect of cross infection control barriers used on the light-curing device tips on the cure depth of a resin composite

2013 ◽  
Vol 16 (3) ◽  
pp. 224 ◽  
Author(s):  
IsabelCristina Celerino de Moraes Porto ◽  
AndréiaCristina Ramos de Brito ◽  
Abhishek Parolia
Keyword(s):  
Infection Control ◽  
Resin Composite ◽  
Cross Infection ◽  
Light Curing

Evaluation of Curing Light Distance on Resin Composite Microhardness and Polymerization

2007 ◽  
Vol 32 (6) ◽  
pp. 571-578 ◽  
Author(s):  
K. M. Rode ◽  
Y. Kawano ◽  
M. L. Turbino
Keyword(s):  
Physical Properties ◽  
Mechanical Behavior ◽  
Clinical Application ◽  
Clinical Relevance ◽  
Resin Composite ◽  
Restorative Material ◽  
Light Curing ◽  
Curing Light ◽  
Dental Professional

Clinical Relevance Different light curing units, the thickness of the resin composite increments and the exposure distance to a curing light may change the physical properties of a restorative material and compromise its mechanical behavior under clinical loading conditions. Understanding how these factors can affect the quality of restorative products may help the dental professional in selecting the best activating source for a specific clinical application.

scholarly journals Mechanical properties, volumetric shrinkage and depth of cure of short fiber-reinforced resin composite

2016 ◽  
Vol 35 (3) ◽  
pp. 418-424 ◽  
Author(s):  
Akimasa TSUJIMOTO ◽  
Wayne W. BARKMEIER ◽  
Toshiki TAKAMIZAWA ◽  
Mark A. LATTA ◽  
Masashi MIYAZAKI
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Short Fiber ◽  
Volumetric Shrinkage ◽  
Fiber Reinforced ◽  
Depth Of Cure

The application of restorative material packed in blisters in cross infection control in restorative dentistry

2019 ◽  
Vol 24 (1) ◽  
Author(s):  
Alicja Porenczuk ◽  
Bartłomiej Górski ◽  
Wioletta Bielas ◽  
Dariusz Gozdowski ◽  
Agnieszka Mielczarek
Keyword(s):  
Infection Control ◽  
Dental Students ◽  
Cross Infection ◽  
Restorative Material ◽  
Restorative Dentistry ◽  
Restorative Treatment ◽  
Dental Procedures ◽  
Restorative Materials ◽  
Knowledge And Attitude ◽  
Almost All

Introduction. Dental procedures bear risk of pathogens transmission leading to cross--infection. Means of protection aim at preventing direct contact with patient’s infected tissues. Less attention is paid to indirect threats, such as the restorative material’s infection during treatment. Restorative materials portioned and packed in disposable blisters may effectively eliminate the risk of material’s contamination. Aim. The aim of the study was to assess the knowledge and attitude of polish dental students on infection of dental restorative materials during treatment. Material and methods. A survey was conducted among students of the Faculty of Dentistry at the Medical University of Warsaw, who were given disposable packages of the restorative material for cavity reconstruction during practical classes. Results. All students gained theoretical knowledge on cross-infection control. Less than half declared need for more classes in this field. Almost all of them (96%) admitted that pathogens transmission may occur during restorative treatment where one spatula is used for both picking the material from the syringe and placing it in the cavity. Only 68% of them actually use separate instruments during restorative treatment. All of them think that packing of the material in separate blisters may increase safety during treatment through minimizing risk of the material contamination. Conclusions. Polish dental students need more classes concerning cross-infection control in restorative dentistry. Restorative materials packed in disposable blisters may increase patients safety during restorative treatment.

scholarly journals Influence of C-factor and Light-curing Mode on Gap Formation in Resin Composite Restorations

2009 ◽  
Vol 34 (5) ◽  
pp. 544-550 ◽  
Author(s):  
G. O. Santos ◽  
M. E. O. Santos ◽  
E. M. Sampaio ◽  
K. R. H. C. Dias ◽  
E. M. Silva
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Gap Formation ◽  
Composite Restorations ◽  
Light Curing

Clinical Relevance Gap formation in resin composite restorations may have influence on some parameters, such as C-factor and light-curing mode.

The Effects of Cross-infection Control Procedures on the Tensile and Flextural Properties of Superelastic Nickel-titanium Wires

1996 ◽  
Vol 23 (1) ◽  
pp. 37-41 ◽  
Author(s):  
O. P. Crotty ◽  
E. H. Davies ◽  
S. P. Jones
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Titanium Alloy ◽  
Ultimate Tensile Strength ◽  
Infection Control ◽  
Untreated Control ◽  
Orthodontic Treatment ◽  
Cross Infection ◽  
Nickel Titanium ◽  
Control Procedures

The development of Superelastic nickel-titanium archwires has simplified the alignment phase of orthodontic treatment by permitting the use of highly flexible, resilient archwires and avoiding the need for complex loops. The majority of relatively high cost has led to sterilization and recycling of these wires by some clinicians. This study way designed to examine the effects of currently used infection contorl procedures on the mechanical properties of superelastic nickel-titanium alloy (SENTA®) archwires. One-hundred-and-forty lengths of a SENTA® wire were subjected to various sterilization and disinfection procedures. These included cold disinfection in 2 per cent glutaraladehyde solution for 3-and 24-hour cyles, and steam autoclaving. Single and double cycles were used. The properties investigated were the 0·1 per cent yield strengh, the ultimate tensile strength, and the flexural regidity. No statistically significant differences were found between the groups or against an untreated control.

Dental Resin Composites with Enhanced Properties Bycommercial Silica Particles as Fillers

2015 ◽  
Vol 815 ◽  
pp. 336-341
Author(s):  
Shuang Bao ◽  
Rui Li Wang ◽  
Bin Sun ◽  
Xiao Ze Jiang ◽  
Mei Fang Zhu
Keyword(s):  
Mechanical Properties ◽  
Resin Composite ◽  
Flexural Modulus ◽  
Silica Particles ◽  
Component Ratio ◽  
Resin Composites ◽  
Dental Resin ◽  
Depth Of Cure ◽  
Dental Resin Composites ◽  
Enhanced Properties

To explore the preparation of novel dental resin composites with enhanced properties, two commercial silica particles with sizes of around 1μm and 40 nm were chosen as inorganic fillers, and firstly surface functionalized by 3-methacryloxypropyltrimethoxysilane (γ-MPS) to incorporate cross-linkable vinyl groups onto the surface of fillers. Then the modified fillers were blended with organic monomers, bisphenolAdiglycidyldimethacrylate (Bis-GMA) and triethylene glycol dimethacrylate (TEGDMA), to fabricate the resin compositeswith a three-roll mixer.Resin composites with various weight percentage of fillers and component ratio of microparticle and nanoparticle were prepared. Surface functionalization of silica particles was characterized by fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA), and mechanical properties degree of conversion, and depth of cure of the resultant resin composites were investigated byuniversal testing machineand FTIR. The results indicated that surface modification of silica particles was successful and the surface organic contents were 3.29% and 4.34%, respectively. Among the studied resin composites, the resin composite with 75 wt.% silica particles (59 wt.% microparticles and 16 wt.% nanoparticles) presented the highest value of depth of cure (5.52 ± 0.07 mm), and optimum mechanical properties such as flexural strength (149.8 ± 3.3 MPa), flexural modulus (13.8 ± 0.06 GPa), compressive strength (340.6 ± 8.3 MPa) and Vicker’smicrohardness (78.26 ± 2.45 HV). The study of dental resin composites fabricated from commercial silica particles with excellent properties might provide a new sight for realizing the preparation of this kind of dental resin composites in an industrial scale.

Effect of Pre-heating Resin Composite on Restoration Microleakage

10.2341/07-41 ◽  
2008 ◽  
Vol 33 (1) ◽  
pp. 72-78 ◽  
Author(s):  
W. C. Wagner ◽  
M. N. Aksu ◽  
A. L. Neme ◽  
J. B. Linger ◽  
F. E. Pink ◽  
...  
Keyword(s):  
Clinical Relevance ◽  
Resin Composite ◽  
Resin Composites ◽  
Tooth Structure ◽  
Positive Effects ◽  
Light Curing

Clinical Relevance The results of this study indicate that preheating composites can improve adaptation of resin composites to tooth structure. This technique significantly reduced microleakage. However, delaying light curing of the preheated composite after placement appears to be counterproductive and diminishes the positive effects from the preheating treatment. Flowable liner was less effective than preheating the composite in reducing microleakage.

The Effect of Curing Units and Staining Solutions on the Color Stability of Resin Composites

10.2341/07-3 ◽  
2007 ◽  
Vol 32 (6) ◽  
pp. 616-622 ◽  
Author(s):  
A. R. Yazici ◽  
Ç Çelik ◽  
B. Dayangaç ◽  
G. Özgünaltay
Keyword(s):  
Clinical Relevance ◽  
Immersion Time ◽  
Resin Composite ◽  
Color Stability ◽  
Time Dependent ◽  
Resin Composites ◽  
Color Changes ◽  
Light Curing

Clinical Relevance The color stability of resin composites did not vary based on the type of light curing unit. The effect of staining solutions on color changes in resin composites was resin composite and immersion time-dependent.

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