The Ablation Properties of CO2Laser Irradiating to Absorption Media: An In Vitro Study

This study aimed to compare histological affected zone of tissue samples irradiated by defocused CO2laser at 1, 2, and 3W continuous wave with and without absorption media. The in vitro experiment was conducted in 70 tissue blocks. The samples were randomly allocated into 7 groups: 10 samples each group, namely, the groups irradiated with 1, 2, and 3W, defocused CO2laser for 5 seconds, the groups irradiated with 1, 2, and 3W, defocused CO2laser to the absorption media, and the media alone group as a control. Then the samples were stained with Masson’s trichrome and measured the affected borders under light microscope at 10 × 10 magnification. There was no histological alteration in the groups irradiated with the defocused CO2laser to the absorption media while the groups without using the absorption media showed the tissue alteration by photoablation.

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In vitro study of continuous wave doppler spectral changes resulting from stenoses and bulbs

Ultrasound in Medicine & Biology ◽

10.1016/0301-5629(87)90154-2 ◽

1987 ◽

Vol 13 (1) ◽

pp. 5-13 ◽

Cited By ~ 8

Author(s):

J.F. Morin ◽

K.W. Johnston ◽

Y.F. Law

Keyword(s):

Continuous Wave ◽

In Vitro Study ◽

Vitro Study ◽

Spectral Changes ◽

Continuous Wave Doppler

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Impact of irrigation solutions on the apical sealing potential of different endodontic sealers used with the continuous-wave obturation technique: An In vitro study

European Journal of General Dentistry ◽

10.4103/ejgd.ejgd_110_20 ◽

2020 ◽

Vol 9 (3) ◽

pp. 134

Author(s):

MohamedAbdelaziz Mohamed El Sayed

Keyword(s):

Continuous Wave ◽

In Vitro Study ◽

Vitro Study ◽

Endodontic Sealers

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Concentrated and Diluted Heparin-Prophylaxis of Postoperative Deep Vein Thrombosis

10.1055/s-0039-1680613 ◽

1977 ◽

Cited By ~ 1

Author(s):

S. Törngren ◽

K. Forsberg

Keyword(s):

Deep Vein Thrombosis ◽

In Vitro Study ◽

Standard Dosage ◽

Vitro Experiment ◽

In Vitro Experiment ◽

Vein Thrombosis ◽

Calcium Heparin ◽

The Mean ◽

Deep Vein

Two calcium heparin solutions (Vitrum AB) have been evaluated in a controlled blind study with standard dosage of 5000 IE subcutaneously. The injections were given 2 hours before operation and 12-hourly for 6-8 days after operation. 175 patients undergoing abdominal surgery were included and randomized into 3 groups. 75% of the patients had malignant disease. 66 patients recieved heparin 500 IE/ml (1 ml), 47 patients recieved heparin 25000 IE/ml (0.2 ml) and 62 patients recieved 5% glueos. Deep vein thrombosis (DVT) was diagnosed with the 125I-fibrinogen method. Finally the heparin solutions with different viscocity were compared in an in vitro experiment. The nurses who injected the patients gave injections into weighed bottles with the usual technique.DVT was diagnosed in 32% of the control patients, 15% of those on heparin 5000 IE/ml and 21% of those on heparin 25000 IE/ml. The difference between controls and heparin 5000 IE/ml is statistically significant (p<0.05). In the in vitro experiment the mean dosage of heparin 5000 IE/ml was 5100 IE and the mean dosage of heparin 25000 IE/ml was 4415 IE. The dosage of heparin 25000 IE/ml was significantly less than 5000 IE (p<0.0l).We conclude that the frequency of DVT is reduced with calcium heparin 5000 IE/ml (1 ml) 12-hourly for 6-8 days after operation. The concentrated heparin 25000 IE/ml (0.2 ml) does not significantly reduce postoperative DVT, which probably can be explained from our results in the in vitro study.

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