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Register a new userIn-vitro Study to Compare Repairing Resin Composite Restorations Using two Different Types
دراسة مخبرية لمقارنة إصلاح ترميمات الراتنج المركب باستخدام نوعين مختلفين منه
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يعتبر استخدام الراتنج المركب كمادة مرممة أساسياً ضمن العيادة و يعتبر الحصول على ترميمات راتنجية طويلة الأمد الشغل الشاغل لأطباء الأسنان. المواد والطرق: تألفت العينة من (20) رحى ثالثة سليمة من أية آفة نخرية وحُضرت على كل رحى حفرة صنف أول و رممت بالراتنج المركب (Tetric EvoCeram) ثم تعرضت العينة لدورات حرارية, قسمت العينة بعدها عشوائياً إلى مجموعتين بحسب الراتنج المستخد للإصلاح: المجموعة الأولى (10) أرحاء رممت براتنج مركب جديد Filtek™ P92 بعد أن تعرضت للإصلاح عن طريق مجموعة ®Cojet لشركة (3M ESPE, Germany) أما المجموعة الثانية(10) أرحاء فتعرضت هي الأخرى للإصلاح عن طريق نفس المجموعة و رممت بالراتنج المركب Z350 XT عرضت المجموعتان بعد ذلك إلى الدورات الحرارية ثانية, لتغمس بعد ذلك ضمن محلول فوشين الأساسي (0.5)% لمدة (1) ثانية تم إجراء مقاطع عرضية لدراسة التسرب الحفافي عن طريق مجهير الستيريو. النتائج: أظهرت الاختبارات الإحصائية عدم وجود فروق دالة إحصائياً في تكررات درجة التسرب الحفافي بين المجموعة التي تعرضت للإصلاح بالراتنج المركب ذي الأساس العضوي سيلوران و المجموعة التي تعرضت للإصلاح بالراتنج المركب ذي الأساسالعضوي ميتاكريلات عند مستوى الثقة 95% .
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 prepared 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
References used
Papacchini F, Monticelli F, Hasa I, Radovic I, Fabianelli A, Polimeni A, Ferrari M 2007 Effect of air-drying temperature on the effectiveness of silane primers and coupling blends in the repair of a microhybrid resin composite, J Adhes Dent , Aug;9:391-7
Demarco FF, Corrêa MB, Cenci MS, Moraes RR, Opdam NJ 2012 Longevity of posterior composite restorations: not only a matter of materials, Dent Mater ,28(1):87-101
Demarco FF, Pereira-Cenci T, de Almeida Andre D, de Sousa Barbosa RP, Piva E, Cenci MS 2011 Effects of metallic or translucent matrices for class II composite restorations: 4-year clinical follow-up findings. Clin Oral Invest, 15:39–47
Guiraldo RD , Consani S, Consani RL, Berger SB, Mendes WB, Sinhoreti MA, Correr-Sobrinho L 2010 Comparison of silorane and methacrylate-based composite resins on the curing light transmission, Braz Dent J , 21(6):538-42
Ferracane JL 2011 Resin composite--state of the art, Dent Mater , 27(1):29-38
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The elapsed time is considered as an essential factor when some
procedures are required on resin composite restorations like
repairing, etc.., and the question is whether this factor is going to effect on using silorane resin composite.
Twenty sil
orane based resin composite blocks were prepared
(8×8×4)mm, randomly assigned into two groups: the first group 10 blocks, half of each resin block was removed by diamond burs after thermocycles, the second group 10 blocks also half of each resin block was removed by diamond burs after fabrication. All Interfacial surfaces were conditioned by (Cojet™, 3M ESPE). Blocks were restored with silorane resin composite and subjected to thermocycles. Microleakage observed under a stereomicroscope after blocks were immersed in 0.5% basic fuchsin solution for 10 s, and transversely sectioned.
Mann-Whitney U test found no statistically significant differences
in microleakage between two groups either with fresh silorane
resin composite group or aged silorane resin composite group.
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).
This study aimed to evaluate the fracture resistance of the E
glass Fiber Reinforced Composite when used to repair two different
kinds of dental porcelain.
The aim of this study is to evaluate the microleakage
resultant from; Silorane resin composite restorations in primary
teeth Prepared Using Burs And Er:YAG Laser with or without
using additional etching.
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