000			04379namaa22004211i 4500
003			OSt
005			20250513121154.0
008			250413s2024 ua a|||frm||| 000 0 eng d
040			_aEG-GICUC _beng _cEG-GICUC _dEG-GICUC _erda
041	0		_aeng _beng _dara
049			_aDeposit
082	0	4	_a617.695
092			_a617.695 _221
097			_aM.Sc
099			_aCai01.24.03.M.Sc.2024.Sh.E
100	0		_aSherehan Gamil Mohamed, _epreparation.
245	1	0	_aEfficacy of bioactive glass material and Er,Cr:YSSG 2780 nm in management of dentin hypersensitivity : _bin vitro study / _cby Sherehan Gamil Mohamed ; Supervisors Prof. Dr. Mostafa Gheith, Dr. Fatema Aziz.
246	1	5	_aفعالية مادة البايوجلاس و ليزرالاربيوم كروم ايتريوم سكانديوم غاليوم العقيق 2780نانوميتر في علاج فرط حساسية الأسنان : _bدراسة في المختبر /
264		0	_c2024.
300			_a87 pages : _billustrations ; _c25 cm. + _eCD.
336			_atext _2rda content
337			_aUnmediated _2rdamedia
338			_avolume _2rdacarrier
502			_aThesis (M.Sc)-Cairo University, 2024.
504			_aBibliography: pages 75-87.
520			_aBackground: Dentin hypersensitivity (DH) is a common and painful dental issue characterized by brief, sharp pain when exposed dentin reacts to various stimuli. Bioactive glass and different types of lasers have been tested in treating DH. Yet, none have incorporated them together in occluding exposed dentinal tubules. Aim of the study: The current study aimed to evaluate the effect of erbium, chromium:yttrium-scandium-gallium-garnet (Er,Cr:YSGG) laser (λ = 2780 nm) and bioactive glass nanoparticles (NanoBG) paste either alone or in combination with different sequences on dentinal tubules closure. Materials and methods: Forty extracted human sound premolars teeth were used for this study. They were distributed equally into 5 groups (n=10). Control group: received no treatment. NanoBG Group: treated with nanoBG paste only; Er,Cr:YSGG laser Group: treated with laser irradiation alone, Er,Cr:YSGG laser + NanoBG group: treated with nanoBG paste after laser irradiation. NanoBG+ Er,Cr:YSGG laser group: treated with nanoBG paste before laser irradiation. Dentin specimens were assessed morphologically by scanning electron microscope (SEM), with subsequent analysis of the mean diameter of dentinal tubules, and calcium and phosphorous analysis by Energy dispersive x-ray spectroscopy (EDX) analysis. Results: NanoBG+ Er,Cr:YSGG laser group showed significantly improved dentinal tubules closure compared to the other groups through SEM imaging. The results were confirmed by the EDX analysis which revealed the highest calcium and phosphorus weight %, in addition to recording the lowest mean diameter of dentinal tubules with statistically significant difference between groups (p<0.05). v Conclusion: The application of nanoBG and Er,Cr:YSGG laser, and the combination of both provided satisfactory occlusion of the dentinal tubules. Yet, the combination of nano-BG and Er,Cr:YSGG laser was found more efficient with superior results, rather than using each modality alone.
520			_a تم استخدام الجسيمات النانوية للزجاج النشط بيولوجيًا و Cr: YSGG laser:Er والمزيج من كلاهماادى الى إغلاقًا مرضيًا لأنابيب العاج. ومع ذلك، تم اكتشاف ان دمج Er:Cr:YSGG laser و الجسيمات النانوية للزجاج النشط بيولوجيًا معأ ادى الى أكثر كفاءة مع نتائج فائقة، بدلاً من استخدام كل طريقة وحدها
530			_aIssues also as CD.
546			_aText in English and abstract in Arabic & English.
650		7	_aMaterial dental _2qrmak
653		0	_aBioactive glass _adentin _adentinal tubules _aEr,Cr:YSGG laser _aSEM
700	0		_aMostafa Gheith _ethesis advisor.
700	0		_aFatema Aziz _ethesis advisor.
900			_b01-01-2024 _cMostafa Gheith _cFatema Aziz _UCairo University _FNational Institute of Laser Enhanced Science(NILES) _DDepartment of Medical Application of Laser
905			_aShimaa _eEman Ghareb
942			_2ddc _cTH _e21 _n0
999			_c171450