000			03236nam a22003377i 4500
008			120326s2007 ua a f bm 00| 0 eng d
082	0	4	_a617.64 _bH.A.E _221
100	1		_aHarhash, Asmaa Yousef Abd El Hameed _eauthor
245	1	0	_aEffect of Fluoride Releasing Adhesives and Fluoride Uptake by Tooth Substrate on Nanoleakage and Shear Bond Strength of Resin Composite to Dentin / _cBy Asmaa Yousef Abd El Hameed Harhash ; supervisors Randa Mohamed Hafez, Mohamed Riad Farid, Ola Ibraheem Fahmy.
246	3	5	_aتأثير اللواصق المطلقة للفلورين واﻻمتصاص السني للفلورين على التسرب النانومتري وقوة الربط القصي بين الكمبوزيت الراتنجي والعاج السني
264		1	_c2007.
300			_a158 pages : _billustrations ; _c30 cm.
336			_atext _btxt _2rdacontent
337			_aunmediated _bn _2rdamedia
338			_avolume _bnc _2rdacarrier
380			_aBibliography
380			_aThesis
500			_aSupervisors : Mohsen H. Abi-Elhassan, Ola M. Fahmy, Heba Ahmad Farag.
502			_aThesis (Ph. D.)-Cairo University, Faculty of Oral and Dental Medicine, 2007.
504			_aBibliography: pages 147-158.
520			_aThis research was designed to measure and compare the rate of fluoride release from two different types of fluoride releasing adhesive systems and the amount of fluoride uptake by dentin at different time intervals namely; one day, one week, one month and three months compared to a non fluoride releasing system. Then to investigate whether leaching out of fluoride from fluoride-releasing adhesives affected the nanoleakage and shear bond strength between resin composite and dentin before and after thermocycling at the aforementioned time intervals. For fluoride release test, a total of 60 cylindrical specimens were prepared from the different tested adhesive materials (Xeno III, P and B NT and Adper Single Bond 2) and divided equally between the three adhesive systems. Fluoride released in deionized water was assessed using a microprocessor-based portable fluoride meter, readings were recorded every week
520			_aA total of three hundred intact, sound, freshly extracted permanent human molar teeth, were selected and divided among the performed tests. Specimens were further subdivided and stored for four different storage periods in deionized water till they were treated according to the different testing procedures. Sixty teeth were used in the fluoride uptake test. Class V cavities were prepared on the buccal surface and restored with the investigated materials, then stored till tested. The ESEM was used to determine the amount of fluoride uptake by dentin after sectioning of the teeth longitudinally through the restoration. Analysis of percentage of fluoride present was carried out using EDAX.
546			_aText in English, abstracts in English and Arabic.
650		0	_aOperative Dentistry. _931208
653			_aNanoleakage.
653			_aFluoride Releasing Adhesives.
700	1		_aFarid, Mohamed Riad _eSupervisor. _931209
700	1		_aHafez, Randa Mohamed _eSupervisor. _931210
700	1		_aFahmy, Ola Ibraheem _eSupervisor. _931211
942			_cTHESIS
999			_c6464 _d6464