Comparison of Pro Root Mineral Trioxide Aggregate and Calcium Enriched Mixture Cement Microleakage as Root End Filling Material: An in Vitro Analysis of Dye Penetration

2015 ◽  
Vol 7 (2) ◽  
pp. 2-2
Author(s):  
Farhad Faramarzi ◽  
Mitra Vossoghi ◽  
Bahareh Shams ◽  
Maryam Vossoghi
Keyword(s):  
Mineral Trioxide Aggregate ◽  
Filling Material ◽  
Dye Penetration ◽  
Vitro Analysis ◽  
In Vitro Analysis

scholarly journals The Efficacy of Reciproc Blue® For Canal Cleanliness Following the Retreatment of Maxillary First Molar: In Vitro Analysis

2021 ◽  
Vol 7 (1) ◽  
pp. 22-27
Author(s):  
Mohd Nazrin Isa ◽  
Aws Hashim Ali Al-Kadhim ◽  
Azlan Jaafar
Keyword(s):  
Filling Material ◽  
Volume Percentage ◽  
Gutta Percha ◽  
Maxillary Molars ◽  
Significant Difference ◽  
Time Required ◽  
Vitro Analysis ◽  
Cleaning And Disinfection ◽  
In Vitro Analysis

Nonsurgical retreatment involves removing mechanical barriers such as gutta-percha to achieve proper cleaning and disinfection. The complexity of the anatomy of molar tooth gives challenge in retreatment procedure. Thus, this study evaluates the amount of residual gutta-percha after retreatment with rotary files (Reciproc Blue®) from each maxillary first molar canal using cone-beam computed tomography (CBCT) and the time required to accomplish it. Nine freshly extracted maxillary molars were instrumented and obturated. Preoperative CBCT was taken, and retreatment was done using Reciproc Blue®. CBCT was taken post retreatment, and the residual volume percentage of gutta-percha from each canal was calculated. The total retreatment time was recorded, and the data were statistically analyzed. The result shows no statistically significant difference in the amount of residual filling material in mesiobuccal, distobuccal, and palatal canal for maxillary first molar and total time used for retreatment with Reciproc Blue® system.

scholarly journals One-bottle adhesives: in vitro analysis of solvent volatilization and sealing ability

2005 ◽  
Vol 19 (4) ◽  
pp. 278-283 ◽  
Author(s):  
Fábio Garcia Lima ◽  
Rafael Ratto de Moraes ◽  
Flávio Fernando Demarco ◽  
Francisco Augusto Burkert Del Pino ◽  
John Powers
Keyword(s):  
Test Group ◽  
Initial Weight ◽  
Control Groups ◽  
Class V ◽  
Dye Penetration ◽  
Sealing Ability ◽  
Final Weight ◽  
Vitro Analysis ◽  
In Vitro Analysis

The aim of this study was to compare the solvent volatilization rate and evaluate the sealing ability of different one-bottle adhesives that were in constant clinical use - an ethanol/water-based adhesive (Single Bond, 3M/ESPE - SB) and an acetone-based adhesive (Prime & Bond 2.1, Dentsply/Caulk - PB). Nine bottles of each agent were collected from the clinics of a dental school, and new ones were used as controls. The weight of all bottles and of empty bottles was determined using an analytical balance. A drop of each solution was dispensed onto the balance, taking its initial weight (IW) and, after 10 min, its final weight (FW). The IW/FW ratio was used to determine the solvent’s volatilization rate. The bottles with the highest evaporation levels (SB Control and PB Control) and with the lowest evaporation levels (SB Test and PB Test) of each agent were applied in Class V restorations with margins in dentin. Specimens were thermocycled and immersed in a 0.5% basic fuchsin solution. Dye penetration was evaluated under magnification and the data were submitted to the Kruskal-Wallis test. Solvent volatilization was faster for the acetone-based adhesive. IW/FW ratios ranged from 1.239 to 1.515 for SB, and from 3.488 to 6.476 for PB. The PB-Control and SB-Control groups exhibited similar microleakage patterns. The highest dye penetration scores were found for the PB-Test group (p < 0.05). Results indicate that the sealing ability can be affected by the repeated opening of acetone-based adhesive bottles.

The native structure of the eukaryotic ribosome

1983 ◽  
Vol 41 ◽  
pp. 432-433
Author(s):  
R.A. Milligan ◽  
P.N.T. Unwin
Keyword(s):  
Ribosomal Proteins ◽  
Crystal Form ◽  
Native Structure ◽  
X Ray Diffraction ◽  
Eukaryotic Ribosome ◽  
Vitro Analysis ◽  
In Vitro Analysis ◽  
Resolution Structure ◽  
Stable Unit

A detailed understanding of the mechanism of protein synthesis will ultimately depend on knowledge of the native structure of the ribosome. Towards this end we have investigated the low resolution structure of the eukaryotic ribosome embedded in frozen buffer, making use of a system in which the ribosomes crystallize naturally.The ribosomes in the cells of early chicken embryos form crystalline arrays when the embryos are cooled at 4°C. We have developed methods to isolate the stable unit of these arrays, the ribosome tetramer, and have determined conditions for the growth of two-dimensional crystals in vitro, Analysis of the proteins in the crystals by 2-D gel electrophoresis demonstrates the presence of all ribosomal proteins normally found in polysomes. There are in addition, four proteins which may facilitate crystallization. The crystals are built from two oppositely facing P4 layers and the predominant crystal form, accounting for >80% of the crystals, has the tetragonal space group P4212, X-ray diffraction of crystal pellets demonstrates that crystalline order extends to ~ 60Å.

1163: Radial Dilation of Ureteral Balloons: A Comparative in-Vitro Analysis

2005 ◽  
Vol 173 (4S) ◽  
pp. 315-316
Author(s):  
Kari Hendlin ◽  
Brynn Lund ◽  
Manoj Monga
Keyword(s):  
Vitro Analysis ◽  
In Vitro Analysis

Role of the 807 C/T Polymorphism of the α2 Gene in Platelet GP Ia Collagen Receptor Expression and Function

1999 ◽  
Vol 81 (06) ◽  
pp. 951-956 ◽  
Author(s):  
J. Corral ◽  
R. González-Conejero ◽  
J. Rivera ◽  
F. Ortuño ◽  
P. Aparicio ◽  
...  
Keyword(s):  
Venous Thrombosis ◽  
Cell Types ◽  
Receptor Expression ◽  
Case Control Studies ◽  
Platelet Surface ◽  
Vitro Analysis ◽  
And Function ◽  
In Vitro Analysis

SummaryThe variability of the platelet GP Ia/IIa density has been associated with the 807 C/T polymorphism (Phe 224) of the GP Ia gene in American Caucasian population. We have investigated the genotype and allelic frequencies of this polymorphism in Spanish Caucasians. The T allele was found in 35% of the 284 blood donors analyzed. We confirmed in 159 healthy subjects a significant association between the 807 C/T polymorphism and the platelet GP Ia density. The T allele correlated with high number of GP Ia molecules on platelet surface. In addition, we observed a similar association of this polymorphism with the expression of this protein in other blood cell types. The platelet responsiveness to collagen was determined by “in vitro” analysis of the platelet activation and aggregation response. We found no significant differences in these functional platelet parameters according to the 807 C/T genotype. Finally, results from 3 case/control studies involving 302 consecutive patients (101 with coronary heart disease, 104 with cerebrovascular disease and 97 with deep venous thrombosis) determined that the 807 C/T polymorphism of the GP Ia gene does not represent a risk factor for arterial or venous thrombosis.

Dosage and Passage Dependent Neuroprotective Effects of Exosomes Derived from Rat Bone Marrow Mesenchymal Stem Cells: An In Vitro Analysis

2018 ◽  
Vol 18 ◽  
Author(s):  
Chaitra Venugopal ◽  
Christopher Shamir ◽  
Sivapriya Senthilkumar ◽  
Janitri Venkatachala Babu ◽  
Peedikayil Kurien Sonu ◽  
...  
Keyword(s):  
Stem Cells ◽  
Bone Marrow ◽  
Mesenchymal Stem Cells ◽  
Neuroprotective Effects ◽  
Marrow Mesenchymal Stem Cells ◽  
Vitro Analysis ◽  
In Vitro Analysis ◽  
Rat Bone

Antibacterial activity of garlic extract and silver Nanoparticles: an in vitro analysis

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
SHREYASHI M ◽  
SULAGNA D ◽  
SANKARI D ◽  
THIRUMURUGAN D ◽  
INFANT SANTHOSE B ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Activity ◽  
Garlic Extract ◽  
Vitro Analysis ◽  
In Vitro Analysis
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