scholarly journals Investigation of Coronal Leakage of Root Fillings after Smear Layer Removal with EDTA or Er,Cr:YSGG Laser through Capillary Flow Porometry

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Tom Edgard Maria Vergauwen ◽  
Rafaël Michiels ◽  
Dries Torbeyns ◽  
Maarten Meire ◽  
Mieke De Bruyne ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Root Canal ◽  
Pore Diameter ◽  
Capillary Flow ◽  
Nonparametric Tests ◽  
Standard Protocol ◽  
Mean Flow ◽  
Direct Exposure ◽  
Capillary Flow Porometry ◽  
Cleaning Protocol

No studies have been performed evaluating the marginal seal of root fillings after direct exposure of root canal (RC) walls to Er,Cr:YSGG laser irradiation. Therefore, 75 root filled teeth (5 × 15–cold lateral condensation) were analyzed for through-and-through leakage (TTL) using capillary flow porometry (CFP). The cleaning protocol determined the experimental groups: (1) irrigation with NaOCl 2.5% and EDTA 17% or standard protocol (SP), (2) SP + Er,Cr:YSGG lasing (dried RC), (3) NaOCl 2.5% + Er,Cr:YSGG lasing (dried RC), (4) SP + Er,Cr:YSGG lasing (wet RC), and (5) NaOCl 2.5% + Er,Cr:YSGG lasing (wet RC). Groups 6 to 10 consisted of the same filled teeth with resected apices. Resection was performed after the first CFP measurement. CFP was used to assess minimum, mean flow, and maximum pore diameters after 48 h. Statistics were performed using nonparametric tests (P>0.05). Additional three roots per group were submitted to SEM of the RC walls. TTL was observed in all groups without statistically significant differences between the different groups for minimum, mean, and maximum pore diameter (P>0.05). In this study, the use of EDTA and/or Er,Cr:YSGG laser did not reduce through-and-through leakage in nonresected and resected roots.

Influence of nonwoven fabric pore sizes on water vapor resistance

2017 ◽  
Vol 88 (12) ◽  
pp. 1402-1412 ◽  
Author(s):  
Dragana Kopitar ◽  
Zenun Skenderi ◽  
Gordana Matijasic
Keyword(s):  
Water Vapor ◽  
Specific Surface ◽  
Linear Correlation ◽  
Pore Volume ◽  
Pore Diameter ◽  
Capillary Flow ◽  
Nonwoven Fabric ◽  
Mean Flow ◽  
Capillary Flow Porometry ◽  
Good Linear Correlation

The influence of nonwoven fabric pores using the Brunauer–Emmet–Teller method, dry sieving and capillary flow porometry on water vapor resistance were investigated. For a better understanding of the nonwoven thickness impact on pores and water vapor resistance (and therefore the influence on comfort), two types of samples were investigated: nonwoven fabric bonded with the needling and nonwoven fabric additionally bonded with the calendering process. Water vapor resistance increased with increasing nonwoven fabric thickness, whereby it ranged from 11.33 to 15.62 m2 Pa W−1 for the non-calendered samples and it ranged from 5.19 to 9.85 m2 Pa W−1 for the calendered ones. Water vapor resistance showed a good linear correlation with the specific surface area, pore volume, apparent opening size and mean flow pore diameter.

scholarly journals Investigation of Coronal Leakage of Root Fillings After Smear-Layer Removal with EDTA or Nd:YAG Lasing Through Capillary-Flow Porometry

2010 ◽  
Vol 28 (S2) ◽  
pp. S-43-S-50 ◽  
Author(s):  
Rafaël Michiels ◽  
Tom Edgard Maria Vergauwen ◽  
Athina Mavridou ◽  
Maarten Meire ◽  
Mieke De Bruyne ◽  
...  
Keyword(s):  
Capillary Flow ◽  
Smear Layer ◽  
Layer Removal ◽  
Capillary Flow Porometry

Analysis of Permeability and Morphology of Root Canal Dentin After Er,Cr:YSGG Laser Irradiation

2010 ◽  
Vol 28 (1) ◽  
pp. 103-108 ◽  
Author(s):  
Anna Cristina Biella Silva ◽  
Camila Guglielmi ◽  
Daiane Thais Meneguzzo ◽  
Ana Cecília Corrêa Aranha ◽  
Antônio Carlos Bombana ◽  
...  
Keyword(s):  
Laser Irradiation ◽  
Root Canal ◽  
Root Canal Dentin

Effect of 830 nm Diode Laser Irradiation of Root Canal on Bond Strength of Metal and Fiber Post

2018 ◽  
Vol 36 (8) ◽  
pp. 439-444 ◽  
Author(s):  
Claudia Strefezza ◽  
Marcello Magri Amaral ◽  
José Quinto ◽  
Sheila Cynthia Gouw-Soares ◽  
Claudia Bianchi Zamataro ◽  
...  
Keyword(s):  
Bond Strength ◽  
Laser Irradiation ◽  
Diode Laser ◽  
Root Canal ◽  
Fiber Post

scholarly journals Clinical and Radiographic Evaluation of Mineral Trioxide Aggregate Pulpotomy in Permanent Teeth

2016 ◽  
Vol 04 (03) ◽  
pp. 183-188
Author(s):  
Neha Verma ◽  
Avninder Kaur ◽  
Shivesh Acharya ◽  
Sunila Sharma
Keyword(s):  
Root Canal ◽  
Mineral Trioxide Aggregate ◽  
Root Canal Treatment ◽  
Permanent Teeth ◽  
Radiographic Evaluation ◽  
Future Research ◽  
Standard Protocol ◽  
Radiographic Outcome ◽  
Irreversible Pulpitis

Abstract Aim and objective: The aim of the present study was to evaluate clinical and radiographic outcome of MTA as a pulpotomy agent in permanent teeth as an alternative to conventional root canal treatment. Materials and Methods: Ten permanent teeth with symptoms of irreversible pulpitis with vital pulp were selected for the study. MTAPulpotomy procedure was done in all the cases using standard protocol. Teeth were evaluated for various clinical and radiographic parameters at 3, 6, 9 and 12 months of follow up. Results: None of the patients reported any kind of clinical discomfort or radiographic abnormality during the follow up period of 3, 6, 9 and 12 months. All the teeth responded positive on electric pulp test at all successive follow ups. Conclusions: MTA Pulpotomy may be used as an alternative treatment modality to root canal treatment in permanent teeth with irreversible pulpitis, if future research continues to show promising results.

Pulmonary microcirculatory response to localized hypercapnia

1982 ◽  
Vol 53 (6) ◽  
pp. 1556-1564 ◽  
Author(s):  
T. Koyama ◽  
M. Horimoto
Keyword(s):  
Flow Velocity ◽  
Time Course ◽  
Capillary Flow ◽  
Mean Flow ◽  
Velocity Change ◽  
Luminal Diameter ◽  
Initial Values ◽  
Pulmonary Capillary ◽  
Before And After ◽  
Pulmonary Microvessels

Anesthetized bullfrogs were examined to study the effects of localized hypercapnia on the red blood cell (RBC) velocity in pulmonary alveolar microvessels on the exposed lung surface. Before and after the exposure of a small area of the lung surface 6 mm in diameter to a hypercapnic gas mixture, the region was exposed to CO2-free control gas. The RBC velocity was measured by the use of a laser Doppler microscope. Both mean flow velocity (MV) and pulsatile amplitude (PA) were determined from the resulting flow velocity contour. Responses of pulmonary microvessels to hypercapnia were examined by measuring the vessel diameters with an ocular microscale of the microscope while gas mixtures were applied to a 1-mm-diameter region of the surface. During hypercapnia both MV (2.31 +/- 0.27 mm/s) and PA (0.54 +/- 0.15 mm/s) in the alveolar arterioles (luminal diameter = 64 +/- 14 microns) were reduced, each reaching a minimum (2.01 +/- 0.24 and 0.43 +/- 0.19 mm/s, respectively) prior to gradual returns to their initial values. After reintroduction of the control gas, the values of MV and PA approached initial values more rapidly. In capillaries MV (1.44 +/- 0.18 mm/s) and PA (0.28 +/- 0.06 mm/s) decreased to 1.25 +/- 0.10 and 0.15 +/- 0.05 mm/s, respectively. The maximum reduction of PA (-44.6%) therefore clearly exceeded that of MV (-12.4%) in capillary flow. An analog model calculation suggested that the reduction in diameter of the arteriolar system could reduce PA more than MV in the pulmonary capillary network. The time course of the velocity change closely resembled that of the diameter change in relatively large arterioles. Vasoconstriction of the arterioles therefore appeared to be the major cause of these decrements in MV and PA.

Capillary Flow Porometry to Assess the Seal Provided by Root-End Filling Materials in a Standardized and Reproducible Way

2006 ◽  
Vol 32 (3) ◽  
pp. 206-209 ◽  
Author(s):  
Mieke A.A. De Bruyne ◽  
Roger J.E. De Bruyne ◽  
Roeland J.G. De Moor
Keyword(s):  
Capillary Flow ◽  
Filling Materials ◽  
Capillary Flow Porometry
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