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Register a new userتأثير زمن تخزين نماذج الشمع والراتنج المركب وطريقة تخزينهما في الانطباق الحفافي لنموذج التيجان الكاملة ( دراسة مخبرية)
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Damascus University رسالة ماجستير
Publication date
2014
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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تأثير زمن تخزين نماذج الشمع والراتنج المركب وطريقة تخزينهما في الانطباق الحفافي لنموذج التيجان الكاملة ( دراسة مخبرية)
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References used
أبو سمرة ,ل, الشعراني , ف . 2009 دراسة تأثير خبز الخزف في الانطباق الحفافي في التيجان الخزفية - المعدنية ( دراسة مخبرية ) رسالة ماجستير قسم التعويضات الثابتة - كلية طب الاسنان - جامعة دمشق
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It was recently noted that there are
serious trials to develop dental materials used in the prosthodontics.
As a result of this development, some veneering ceramic systems
used in metal-ceramic crowns have been appeared. In view of the
major impo
rtance of marginal fit and its role in the success of
restoration it must be a study and evaluation of marginal fit for these
modern systems.
This research aimed to comparasion of marginal fit for metal ceramic
crowns using two types of veneering ceramic.
تتعرض الليبيدات كما تتعرض أغلب مكونات الدقيق إلى جملة من التغيرات أثناء التخزين ينعكس ذلك على الخصائص الفزيائية لللعجين وعلى نوعية الخبز الناتج
The purpose of this study is to detect the relationship between dentin
bonding systems (total etch and self etch) and the marginal leakage of
composite resin restorations.
Regarding the sealing ability of restorative dental materials, this
study was done to assess the microleakage of class V cavities
restored with a new self-adhesive flowable composite resin and
compare to different flowable materials.
Aim: to compare the effect of multiple usage and surface coarseness of diamond
burs on marginal microleakage of cervical resin composite restorations.
Materials and methods: sixty extracted premolars without caries were chosen. The
sample was rand
omly divided into three groups: n1=n2=n3=20. Group(1): class v cavities
were prepared using super coarse diamond burs, group(2): prepared by coarse diamond
burs, whereas group)3(: prepared by medium coarse diamond burs. All cavities were
restored by resin composite, then The teeth were thermocycled and immersedIn5%solution
of methylene blue dye for 12hours.Then the teeth were sectioned vertically, Dye
penetration was evaluated using a 10X stereomicroscope at the occlusal and gingival
margins. Data were collected and statistical analysis was conducted.
Results: The results showed that the multiple use of super coarse diamond burs
caused no significantly statistically affect on occlusal and gingival microleakage (P>0.05).
However, the multiple use of coarse and medium diamond burs caused significantly
statistically affect on gingival marginal microleakage (P<0.05).
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