000			03078cam a2200337 a 4500
003			EG-GiCUC
005			20250223032148.0
008			190113s2017 ua do f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.09.03.M.Sc.2017.Sa.M
100	0		_aSayed Ahmed Sayed Karim
245	1	0	_aMicro-leakage of Indirect-Nano hybrid resin composite inlay restoration fabricated using flexible die versus stone die after 24 hours and 3 months : _bAn in-vitro study / _cSayed Ahmed Sayed Karim ; Supervised Olfat Elsayed Hassanien , Asmaa Yassen
246	1	5	_aالتسريبات المصغره للكمبوزيت الراتنجىي النانو الهاجين الغير مباشر مختلق على التعريف المرن مقارنه بالتعريف الحجرى بعد 24 ساعه و3 اشهر: _bدراسة معملية
260			_aCairo : _bSayed Ahmed Sayed Karim , _c2017
300			_a74 P. : _bcharts , photographs ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Operative Dentistry
520			_aThis in-vitro study was designed to evaluate the Microleakage remains a problem with the commonly used restorative materials. The current study was conducted to investigate the microleakage of the nano hybrid resin composite indirect restoration (Grandiso) fabricated using flexible or stone die after 24 hours and 3 months. The dimensional changes of the die materials were also evaluated after the same time intervals. A total number of 44 sound non cavitated extracted human upper premolar teeth were used in this study. Teeth were randomly divided into two main groups with 22 specimens each according to the type of the die material (A) used, where (A1) represented stone die and (A2) represented flexible die. Then, each group was subdivided into two subgroups according to the period time (B) with 11specimens each, where (B1) represented after 24 hours storage, (B2) represented after 3 months storage. Teeth were mounted into acrylic blocks and a standardized MOD cavities were prepared with dimensions (3±0.5 x 4 mm), corresponding to bucco-lingual width and depth respectively using the CNC milling machine. Alginate impression was taken using a specially constructed mould and poured with either silicone material to obtain a flexible die or stone for a stone die. Nanofilled resin composite (Grandioso) was applied in increments, the first one was to restore the contact followed by two increments and light cured. Inlay restorations were cemented to the prepared cavities using Future dual cured universal adhesive and Bifix QM resin cement
530			_aIssued also as CD
653		4	_aFlexible die
653		4	_aMicro-leakage
653		4	_aNano hybrid resin composite
700	0		_aAsmaa Yassen , _eSupervisor
700	0		_aOlfat Elsayed Hassanien , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aNazla _eRevisor
905			_aSamia _eCataloger
942			_2ddc _cTH
999			_c69549 _d69549