Document Details

Document Type : Article In Journal 
Document Title :
THE EFFECT OF PROXIMAL RETENTION GROOVES ON THE FRACTURE STRENGTH OF CLASS II AMALGAM AND POSTERIOR COMPOSITE RESIN RESTORATIONS
THE EFFECT OF PROXIMAL RETENTION GROOVES ON THE FRACTURE STRENGTH OF CLASS II AMALGAM AND POSTERIOR COMPOSITE RESIN RESTORATIONS
 
Document Language : English 
Abstract : The effect of proximal retention grooves on the fracture strength of class II malgam-valiant-and composite resin Visiomolar- was studied. One hundred and twenty human upper premolars were used. The teeth were di- vided into three groups according to the technique of condensation of restorative material used. Each group was subdivided into four subgroups according to the extent and location of the axial grooves. Occluso- mesial cavities were preared. After filling, the teeth were stored for 7 days. A universal testing machine with 250 kg reversible load cell running at 1 mm/min was used to test the samples. It was found that the proximal grooves increased the fracture strength of the tested materials. The full length grooves, from the gingival seato the occlusal margin, recorded the highest values, the bonded composites recorded higher fracture strength than amalgam with the same type of groove. Finally, incremental filled composite was higher in fracture strength than the bulk technique. 
ISSN : 0 
Journal Name : Cairo Dental Journal 
Volume : 11 
Issue Number : 1 
Publishing Year : 1995 AH
1995 AD 
Article Type : Article 
Added Date : Wednesday, June 18, 2008 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
عصام نجيبNajeeb, esam InvestigatorDoctorateenajeeb@kau.edu.sa

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