Effect of Surface Treatments on Fracture Strength of Zirconia Core

Ibraheem , Yusra A.; Alwahab , Zahraa N.

doi:10.12816/0060719

Article Details

Effect of Surface Treatments on Fracture Strength of Zirconia Core

Authors:

Ibraheem , Yusra A. | Alwahab , Zahraa N.

Publisher:

Iraqi Association for Oral Research

Main Topics:

Medicine

Journal:

Journal of Oral and Dental Research 2020 Vol.7 Issue 1, pp.11-21

Document Type:

Article

Publication Date:

6/2020

Document Language:

English

Document ID (Org No.):

246073

Frequency:

Annual

pISSN:

23106417

DOI:

10.12816/0060719

Descriptors:

Keywords:

Abstract:

 Background The increasing of demand for all-ceramic restorations has led to the developmentof ceramic materials with optimized mechanical properties, such as denselysintered aluminum oxide and zirconium oxide (zirconia) ceramics. Objectives The purposeof this in vitro study was to evaluate the effect of etching with hydrofluoric acid orphosphoric acid and the effect of packable P60 composite veneer material on fracturestrength of zirconia cores. Materials and Methods Twenty-four zirconium cores (Vita,Germany) with 0.7mm thickness were fabricated by CAD-CAM technology and sinteredat 1450 ⁰C for 60min according to the manufacturer’s instructions. All zirconium coreswere subjected to air abrasion with 50μm of Al2O3. These were randomly divided intothree groups, (n=8). Group A: control group, veneered with IPS E-max Ceram porcelain;group B: etching with 37% of phosphoric acid and veneered with packable compositeresin; and group C: etching with 9.5% of hydrofluoric acid and veneered withpackable composite resin. All specimens were subjected to fracture strength test in anuniversal testing machine, a load was applied with 6mm diameter steel ball indenterat a crosshead speed of 0.5mm/min. Results One-way ANOVA test showed that therewere statistically highly significant differences among all studiedgroups. LSD testwasperformed to show thesource of significancy it showed a highly significant differenceamong all testedgroups. Conclusion A combination of surface treatment of 50μmAl2O3 and 37% concentration of phosphoric acid and adhesive agent could enhancethe fracture strength of composite veneered crowns.

Article Details

Effect of Surface Treatments on Fracture Strength of Zirconia Core

Authors:

Ibraheem , Yusra A. | Alwahab , Zahraa N.

Publisher:

Iraqi Association for Oral Research

Main Topics:

Medicine

Journal:

Journal of Oral and Dental Research 2020 Vol.7 Issue 1, pp.11-21

Document Type:

Article

Publication Date:

6/2020

Document Language:

English

Document ID (Org No.):

246073

Frequency:

Annual

pISSN:

23106417

DOI:

10.12816/0060719

Descriptors:

DENTISTRY

ORTHODONTIC APPLIANCES

TOOTH CARE

DENTISTS

PATIENTS

Composite Resin

Fracture Strength

Surface Treatment

Sandblast

Zirconia Core

Issues

Article Details

Authors: Ibraheem , Yusra A. | Alwahab , Zahraa N.

Publisher: Iraqi Association for Oral Research

Main Topics: Medicine

Journal: Journal of Oral and Dental Research 2020 Vol.7 Issue 1, pp.11-21

Document Type: Article

Publication Date: 6/2020

Document Language: English

Document ID (Org No.): 246073

Frequency: Annual

pISSN: 23106417

DOI: 10.12816/0060719

Descriptors:

Issues

Authors:

Ibraheem , Yusra A. | Alwahab , Zahraa N.

Publisher:

Iraqi Association for Oral Research

Main Topics:

Medicine

Journal:

Journal of Oral and Dental Research 2020 Vol.7 Issue 1, pp.11-21

Document Type:

Article

Publication Date:

6/2020

Document Language:

English

Document ID (Org No.):

246073

Frequency:

Annual

pISSN:

23106417

DOI:

10.12816/0060719