000			02938cam a2200325 a 4500
003			EG-GiCUC
008			180108s2016 ua dh f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.09.09.M.Sc.2016.Sh.I
100	0		_aShereen Salah Eldin Morsy Seddik
245	1	3	_aIn vitro comparative study of dimensional changes of polyether & additional silicone impression materials for bounded partially edentulous / _cShereen Salah Eldin Morsy Seddik ; Supervised Nadia Abbas , Nouran AbdelNabi , Tamer Mahmoud Ahmed
246	1	5	_aدراسة معملية لمقارنة تغير الابعاد لمادتي القياس بولي اثير والسيليكون بالاضافة لحالات الحافة الدردرية الجزئية المحددة
260			_aCairo : _bShereen Salah Eldin Morsy Seddik , _c2016
300			_a63 P. : _bcharts , facsimiles ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Prosthodontics
520			_aDimensional accuracy is one of the most important factors that govern the accuracy of any impression material, and consequently the accuracy of any impression. The aim of this in-vitro study was to compare the dimensional changes of two impression materials; polyether and addition silicone using both a digital caliper and computerized digital software. A maxillary partially edentulous Kennedy class III with modification 1 acrylic model was used in this experiment. The model had acrylic teeth with missing second premolar and first molar bilaterally. The teeth and the cast was prepared to ensure proper seating of the custom tray fabricated. A dot shaped elevation was prepared on the middle of the occlusal surface of the first premolar and third molar, and on the base of the cast five box shaped reference marks with parallel walls were drilled on the buccal side of the cast, anteriorly and posteriorly, and on both sides. After the cast was prepared, a 2 base plate wax spacer was adapted over the cast, and custom made clear self-cure acrylic resin was fabricated to be adapted to the full extensions of the cast, including the box-shaped reference marks. Two impression materials ; polyether and additional silicone was used in this study. A total of 20 impressions were made, 10 impressions with polyether in the first group and 10 impressions with additional silicone in the second group, in both groups the same tray was used
530			_aIssued also as CD
653		4	_aBounded partially edentulous
653		4	_aDimensional changes
653		4	_aPolyether & additional silicone impression materials
700	0		_aNadia Abbas , _eSupervisor
700	0		_aNouran Abdelnabi , _eSupervisor
700	0		_aTamer Mahmoud Ahmed , _eSupervisor
905			_aNazla _eRevisor
905			_aShimaa _eCataloger
942			_2ddc _cTH
999			_c64466 _d64466