000			03237cam a2200337 a 4500
003			EG-GiCUC
005			20250223031605.0
008			170105s2015 ua dho f m 000 0 eng d
040			_aEG-GiCUC _beng _cEG-GiCUC
041	0		_aeng
049			_aDeposite
097			_aM.Sc
099			_aCai01.09.05.M.Sc.2015.Ah.E
100	0		_aAhmed Mohamed Elsayed Mohamed
245	1	0	_aEfficacy of digital radiographic techniques in the assessment of jaw bone tissue / _cAhmed Mohamed Elsayed Mohamed ; Supervised Hany Mahmoud Omar , Farid Medhat Farid
246	1	5	_aفعالية تقنيات الأشعة الرقمية في تقييم نسيج عظام الفك
260			_aCairo : _bAhmed Mohamed Elsayed Mohamed , _c2015
300			_a195 P. : _bcharts , facsimiles , photographs ; _c25cm
502			_aThesis (M.Sc.) - Cairo University - Faculty of Oral and Dental Medicine - Department of Oral (Radiology)
520			_aMaterials and Methods: Five dry human adult mandibles of unknown age or gender were used in our study. Gutta-percha was used as radio-opaque markers to verify the correct sites of the mental, mandibular and lingual foramina in radiographs. The mandibles{u2019} outer surfaces were covered by pink set up modeling wax in order to simulate soft tissues. Radiographic indices and linear measurements obtained from the different digital imaging modalities were compared with the direct real measurements performed by using 0.01 mm precision vernier digital caliper. Direct measurements of the mandibles were considered the gold standard. Measurements were obtained separately from the right and left mandibular sides ending up with ten evaluated samples. All direct real and digital radiographic measurements were obtained in millimeters. Results: "Excluding M/M index and M/M index half MF". There was no statistically significant difference between all indices measurements{u2019} means and the real ones. Regarding linear measurements; Most of linear measurements{u2019} means showed no statistically significant underestimation; except superior R.O. point to the lower border of the mandible which was significantly underestimated in the digital, auto and manual reformatted panoramic. Meanwhile, superior R.O. point to the upper border of the mandible was significantly overestimated in manual reformatted panoramic. Conclusion: There was no statistically significant difference between most of linear & indices measurements{u2019} means and the real ones. Radiation dose to patients must be concerned. Conventional digital panoramic radiographs must not be replaced by CBCT images, but CBCT should be taken only if there is a clear indication. M/M index is mostly used to assess the level of bone resorption. In our study M/M index and M/M index half MF were statistically significant overestimated when measured in all modalities in our study. Thus shown to be unreliable
530			_aIssued also as CD
653		4	_aCBCT
653		4	_aDigital panoramic
653		4	_aPSP
700	0		_aFarid Medhat Farid , _eSupervisor
700	0		_aHany Mahmoud Omar , _eSupervisor
856			_uhttp://172.23.153.220/th.pdf
905			_aEnas _eCataloger
905			_aNazla _eRevisor
942			_2ddc _cTH
999			_c58341 _d58341