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Register a new userThe effect of veneering porcelain type on marginal fit for metal-ceramic crowns (In-vitro study)
تأثير نوع الخزف المغطي على الانطباق الحفافي للتيجان الخزفية المعدنية - دراسة مخبرية –
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Aِl-Baath University ورقة بحثية
Publication date
2017
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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لوحظ في الفترة الأخيرة التطور المتسارع للمواد المستخدمة في التعويضات الثابتة، حيث ظهرت أنماط حديثة من الخزف المغطي المستخدم في الترميمات الخزفية المعدنية التي تحسن الناحية التجميلية، و نتيجة للأهمية السريرية للانطباق الحفافي في نجاح التعويض كان لابد من تقييمه مع هذه الأنظمة الحديثة. يهدف البحث إلى مقارنة الانطباق الحفافي للتيجان الخزفية المعدنية باستخدام نوعين مختلفين من الخزف المغطي.
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 importance 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.
References used
Pettenò D, Schierano G, Bassi F, Bresciano ME, Carossa S. .9 Comparison of marginal fit of 3 different metal-ceramic systems: an .)in vitro study. International Journal of Prosthodontics. 2000;13(5
ceramic -Anusavice K, Hojjatie B. Stress distribution in metal crowns with a facial porcelain margin. Journal of Dental Research. .1987;66(9):1493-
McLaren E. Modern metal-ceramic restorations. Inside Dent .2006:1-3
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Vibration of Ultrasonic has used for scaling
and periodontal curettage, it is also has used for metal crown and
metal-ceramic crown removal, subsequently, using the tips whether for
scaling or removing crown, they will be in direct contact with th
is crown,
This research aimed to evaluate the surface of metal-ceramic crown
after exposure to Vibration of Ultrasonic tips.
The aim of this laboratory study was to evaluate the
internal fit of lithium disilicate glass ceramic laminate veneers
fabricating using heat-pressing technique and cemented using two
types of adhesive resin cement.
Porcelain Laminate Veneers have shown promising results recently
when used as an alternative to metal ceramic restorations for the
anterior teeth. Long-term success for any restoration depends on the
marginal fit, because marginal gaps increase pl
aque accumulation
and causing periodontitis. The aim of this study was to Asses
marginal fit changes according to were curing the bond agent before
or after cementation.
The idea of use ceramic margins for metal-ceramic crowns was founded to
overcome problem of grayness for gingival margins that caused by metal collar in metal-ceramic crowns ,
but at the same time there are a lot of cautions on decrease mechanical
resistance for these restorations.
This study aims to study fracture resistance of metal-ceramic crowns with ceramic margins in 1 or 2 mm.
long, and compare it with mechanical resistance of metal-ceramic crowns with metal collar.
Porcelain has a long history of fixed prosthodontics to achieve optimum beauty by color. However, there is a lack of information on how the color of different thicknesses of ivory porcelain is affected by repeated exposure to baking.
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