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Register a new userIn-vitro study on Effects of Two Dying Liquids on Color Stability of Resin Composite Restorative Materials
دراسة مخبرية لمعرفة تأثير نوعين من السوائل المصبغة على الاستقرار اللوني للمواد المرممة الراتنجية دقيقة الجزيئات
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Aِl-Baath University ورقة بحثية
Publication date
2016
fields
Dentistry
and research's language is
العربية
Created by
Shamra Editor
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يعد الوصول بالترميم إلى مظهر طبيعي متناغم مع البيئة الفموية من الأهداف الجوهرية في طب الأسنان , و حتى نحافظ على هذه النتائج الجمالية يجب أن تكون المواد المرممة قادرة على تحقيق استقرار لوني لأطول وقت ممكن . تهدف هذه الدراسة إلى تقييم تأثير الشاي و المتة على الاستقرار اللوني لنوعين من المواد المرممة الراتنجية دقيقة الجزيئات .
The aim of the study was to compare the effect of tea and yerba mate on color stability of two types Nano-filled resin composite materials.
References used
(Paravina RD, Powers JM (2004). Esthetic color training in dentistry. Saint Louis: Mosby p;(43-45
(Yew Z H et al .Colour changes in nano-filled and micro-hybred composite resins on exposure to spices . The University of Adelaide 2011. P;(30-32
(Mitchell Ch 2008 . Dental Materials in Operative Dentistry .5th edition . . p;(1-13),(100-106
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Objective:This study evaluated the fluoride release of four dental restorative
materials for a period of 28 days.
Materials And Methods:A total of 10 specimens (4 * 2 * 2)mm3 for each of the four
materials were prepared following manufacturer’s in
structions and immersed
independently in 2 ml of distilled water which was changed every period for all the
specimens.
Results:The results demonstrated that the glass ionomer cements (Fuji IX GP and
VivaglassCem) release high fluoride compared with the compomer and composite resin,
but rapidly decreased after the third day and continued this releasing for a period of 28
days , also showed low fluoride release of composite resin and lacking entirely with the
passage of time.
Conclusions:The fluoride released by the glass ionomer cements (GICs) was found
to be highest during the first 24 h and decreased significantly over the 1st week with lower
levels obtained on the 28th day, thus demonstrating the phenomenon of “initial burst”.
The composite resin and compomer used in this study did not show this “initial
burst”.
Resin based composite considers substantially as a restorative
material in clinic. Dentists concern in placement resin composite
restorations with Long term survival.
Materials and Methods: 20 Non carious human third molars, class I
cavity was pr
epared in every molar, restored with methacrylate
resin composite Tetric EvoCeram. The restored teeth were
subjected to thermocycles. Specimen was randomly divided into
two groups : the first group 10 restorations, were repaired by
Cojet® (3M ESPE, Germany) and restored by Filtek™ P90, the
second group 10 restorations also repaired by Cojet ® but restored
by Filtek™ Z350 XT. After that all teeth were subjected to
thermocycles again, later immersed in 0.5% basic fuchsin solution
for 1 s. The teeth were transversely sectioned and observed under
a stereomicroscope. The degree of dye penetration was recorded
and analyzed.
Results: No statistically significant differences in microleakage
were observed between two groups either with low shrinkage
Silorane resin composite or methacrylate resin composite
During the previous decade, resins were widely used in the restoration of posterior teeth, as it was found that wear occurs in the abrasive and adjacent section of resin-based restorations, while in the marginal areas, marginal leakage was observed.
This study aimed to evaluate the extent of the
microleakage in the cavities which prepared with Er:YAG (erbium:
yttrium aluminum garnet) laser or diamond burs and restored by
using of different types of resin materials.
Color stability is an important factor to ensure the long-term of esthetic success
of ceramic restoration, there are several factors affect color stability, such as repeated firing.
Aim of Study: Color Difference comparison between two types of cer
amic fused to metal after repeat
firing by using spectrophotometer (Vita Easy Shade).
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