extraction techniques
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IX, 140 s. : il. ; 24 cm
... Buser -- 2 Proceedings of the Third III Consensus Conference: -- Implants in Post-Extraction Sites 3 ... ... Statements 6 -- 2.1.2 Proposed Clinical Approaches 7 -- 2.1.3 Conclusions 8 -- 2.2 Implants in Post-Extraction ... ... Update 11 -- 2.2.3 Healing Adjacent to Implants in Post-Extraction Sites 12 -- 2.2.4 Implant Survival ... ... 13 -- 2.2.5 Esthetic Outcomes I4 -- 3 Pre-Operative Assessment and Treatment Options for Post-Extraction ... ... Implants 17 -- 3.1 Factors Influencing the Treatment Outcomes of Implants in Post-Extraction Sites 18 ...
ITI treatment guide ; Vol. 3
xiii, 202 s. : il., tab. ; 29 cm
- MeSH
- extrakce zubů MeSH
- implantace zubů klasifikace metody MeSH
- stomatochirurgické výkony MeSH
- zubní implantáty jednotlivých zubů MeSH
- zubní implantáty MeSH
- Konspekt
- Stomatologie
- NLK Obory
- zubní lékařství
- NLK Publikační typ
- kolektivní monografie
The following extraction techniques have been used for extracting antioxidants (apigenin, coumarin, esculetin, umbelliferone, bergapten, quercetin, rutin, scopoletin and xanthotoxin) from plant material: supercritical fluid extraction, pressurized liquid extraction, extraction by means of Soxhlet apparatus, ultrasonic extraction in ultrasonic bath, and by means of ultrasonic probe. The analytical method based on HPLC-UV detection for the determination of selected antioxidants was developed. For all extracts the antioxidant capacity based on the reduction of free 2,2-diphenyl-1-picrylhydrazyl radical was also determined. Comparing all results the ultrasonic probe method using 0.75 g of sample extracted by 50 mL of acetonitrile in water (30%, v/v) for 25 min at room temperature and with amplitude at 60% (equal to 90 W) without pulsation was evaluated as the best tool. The most significant indicator demonstrating this statement is the antioxidant capacity expressed as gallic acid equivalent where the ultrasonic probe method showed the best results in 10 of 16 samples. Also the operability of ultrasonic probe extraction method compared to other tested methods is more favorable.
Electromembrane extraction (EME) of the polar zwitterionic drugs, anthracyclines (ANT, doxorubicin, daunorubicin and its metabolite daunorubicinol), from rabbit plasma was investigated. The optimized EME was compared to conventional sample pretreatment techniques such as protein precipitation (PP) and liquid-liquid extraction (LLE), mainly in terms of extraction reliability, recovery and matrix effect. In addition, phospholipids profile in the individual extracts was evaluated. The extracted samples were analyzed using UHPLC-MS/MS with electrospray ionization in positive ion mode. The method was validated within the concentration range of 0.25-1000 ng/mL for all tested ANT. Compared with PP and LLE, the EME provided high extraction recovery (more than 80% for all ANT) and excellent sample clean-up (matrix effect were 100 ± 10% with RSD values lower than 4% for all ANT). Furthermore, only negligible amounts of phospholipids were detected in the EME samples. Finally, practical applicability of EME was proved by analysis of plasma samples taken from a pilot in vivo study in rabbits. Consistent results were obtained when using both EME and LLE to extract the plasma prior to the analysis, which further confirmed high reliability of EME. This study clearly showed that EME is a simple, rapid, repeatable technique for extraction of ANT from plasma and it is an up to date alternative to routine conventional extraction techniques.
- MeSH
- antracykliny MeSH
- králíci MeSH
- léčivé přípravky * MeSH
- membrány umělé MeSH
- reprodukovatelnost výsledků MeSH
- tandemová hmotnostní spektrometrie * MeSH
- zvířata MeSH
- Check Tag
- králíci MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
Cílem práce bylo změřit neplánovaný meziální posun prvních stálých molárů (ztrátu kotvení) a změnu osového postavení horních a dolních řezáků při extrakční ortodontické terapii. V souboru 55 pacientů, z nichž 28 bylo léceno s extrakcemi dvou horních premolárů a 27 pacientů bylo léčeno extrakcemi čtyř premolárů, dvou v horní a dvou v dolní čelisti, došlo k neplánovanému meziálnímu posunu molárů. Změna osového postavení řezáků byla významnájen u souboru pacientů s extrakcemi čtyř premolárů. Interincizální úhel se zvětšil o 11,18°, apex horního středního řezáku se u téhož souboru posunul vestibulárně o1,02mm, vztaženo k linii NB. U souboru s extrakcemi dvou horních premolárů nebyly změny osového postavení řezáků statisticky významné. U 8 z 28 pacientů bez extrakcí v dolním oblouku byly dolní řezáky vykloněny více než 2 mm ventrálně.
The aim of the presented work was to measure the involuntary mesial movement of first permanent molars (i.e. anchorage loss) as well as the change in axial position of upper and lovyer incisors in orthodontic extraction therapy. The sample comprised 55 patients; 28 patients were treated with extraction of two upper premolars, 27 patients were treated with extraction of four premolars - two in the maxilla and two in the mandible. There was undesirable mesial movement of molars. The change in axial position of incisors was significant only in the sample of patients with extraction of four premolars. Interincisal angle increased by 11.18°, apex of the upper central incisor moved in labial direction by 1.02 mm (with regard to NB line). In the sample with extraction of two maxillary premolars there were no statistically significant changes in the axial positio'n of incisors. In 8 of 28 patients without extraction in lower arch the lower incisors moved more than 2 mm in labial direction.
V retrospektivní studii je zjišťována četnost i doba extrakce povolitelných stehů (PS) po trabekulektomii (TE) u prvního a druhého operovaného oka. Bylo sledováno 40 pacientů s primárním glaukomem otevřeného úhlu, kterým byla provedena TE se dvěma PS na obou očích stejným operačním postupem a stejným operatérem. U prvního operovaného oka bylo 30 % pacientů bez extrakce PS, 70 % s extrakcí. U druhého oka bylo 35 % bez extrakce, 65 % s extrakcí stehů. Četnost extrakcí stehů na obou očích je obdobná, p = 0,76. U obou očí přibližně u 1/3 operovaných očí oba PS ponecháváme, u další třetiny očí odstraňujeme 1 steh a u zbylé třetiny oba PS. Doba extrakce stehů je rovněž obdobná u obou očí, v 75 % byly vytaženy stehy 20. dne a v 55 % do 15. dne po operaci. Není rozdíl mezi prvním a druhým operovaným okem, jak ve frekvenci extrakce stehů, tak i v době vyjmutí po operaci.
Purpose: To find out the frequency and time of extraction of releasable sutures (RS) in the first and second operated eye. Methods: In a retrospective study, 40 patients with primary open glaucoma were followed. Patients underwent trabeculectomy with two RS on both eyes. The trabeculectomy was perfomed by the same surgeon and by the identical method. Results: It was not necessary to remove RS postoperatively in 30% of the first operated eyes and in 35% of the second operated eyes. One RS was removed in 37,5% of the first and 32,5% of the second eyes. Two RS were removed equally in 32,5% of both eyes. The differences of RS extraction on the first and on the second eye were not significant (p = 0.76). The extraction time was similar in both eyes, too. Conclusion: There is no difference between the first and second operated eye regarding the frequency and time of extraction RS.
