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شريفه عبدالله محمد الشهري

Associate Professor

عضوة هيئة تدريس

كلية طب الأسنان
مجمع طالبات جامعة الملك سعود مبنى 20 الدور الثالث مكتب رقم 72

An investigation into the role of core porcelain thickness and lamination in determining the flexural strength of In-Ceram.

AlShehri, Sharifa Abdullah . 2011

بحث ISI

 A biaxial flexure test was conducted to evaluate the effect of reducing the thickness of In-Ceram core material and veneering with Vitadur α dentine porcelain on its flexural strength.
Four groups of 10 discs were tested; group I discs were In-Ceram discs with mean thickness of 1.58 ± 0.08 mm, group II discs were In-Ceram discs with mean thickness of 1.0 ± 0.11 mm, group III discs were laminated In-Ceram core porcelain/Vitadur α discs with a mean total thickness of 2.06 ± 0.15 mm and core porcelain thickness of 1.0 ± 0.11 mm; group IV discs were Vitadur α discs with a mean thickness of 2.08 ± 0.16 mm.
Mean flexural strength values decreased between groups: 436 ± 38 MPa for group I, 352 ± 30 MPa for group II, 237 ± 24 MPa for group III, and 77 ± 14 MPa for group IV. The result of ANOVA and Tukey tests indicated that the mean flexural strength of group II was significantly less than group I, indicating that thickness of the In-Ceram core provides critical flexural strength to the final product. The addition of ≈ 1 mm of Vitadur α veneering porcelain to In-Ceram core significantly (p= 0.05) reduced the flexural strength as compared to the nonveneered In-Ceram core specimens (group II). The Vitadur α specimens (group IV) were significantly weaker than all the other groups.
This study indicates that lamination should be avoided in areas where maximum strength is required for In-Ceram all-ceramic crowns and bridges.
An Investigation into the Role of Core Porcelain Thickness and Lamination in Determining the Flexural Strength of In-Ceram Dental Materials (PDF Download Available). Available from: http://www.researchgate.net/publication/51091360_An_Investigation_into_the_Role_of_Core_Porcelain_Thickness_and_Lamination_in_Determining_the_Flexural_Strength_of_In-Ceram_Dental_Materials [accessed Sep 11, 2015].

Publication Work Type
بحث ISI
Volume Number
20
Issue Number
2
Magazine \ Newspaper
Journal of Prosthodontics
Pages
261–266
more of publication
publications

 A biaxial flexure test was conducted to evaluate the effect of reducing the thickness of In-Ceram core material and veneering with Vitadur α dentine porcelain on its flexural strength.

by Sharifa Abdullah AlShehri
2011
publications

This study evaluated the effect of veneering Dicor castable ceramic with Vitadur N and Dicor Plus feldspathic porcelains.

by Sharifa A Al-Shehri, Hamdi Mohammed and Clive A Wilson.
1996
publications

 A biaxial flexure test was conducted to evaluate the effect of reducing the thickness of In-Ceram core material and veneering with Vitadur α dentine porcelain on its flexural strength.

by Sharifa Abdullah AlShehri
2011