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The effect of proximal contour on marginal ridge fracture of Class II composite resin restorations.
J Dent
October 2008
Department of Preventive and Restorative Dentistry, Radboud University Nijmegen Medical Centre, The Netherlands.
Objectives: To compare the marginal ridge fracture strength of Class II composite resin restorations placed with a straight or contoured matrix band using composite resins with different modulus of elasticity.
Methods: In 60 artificial first molars standardized MO-preparations were ground. Two matrix systems were used: (1) A straight matrix (Standard Tofflemire Matrix, KerrHawe) in Tofflemire retainer (Produits Dentaire).
The influence of different composite placement techniques on microleakage in preparations with high C- factor: An in vitro study.
J Conserv Dent
July 2008
The Oxford Dental College and Hospital, Bommanahalli, Bangalore, Karnataka, India.
Objective: This study evaluated the marginal leakage around class-I cavity preparations restored with Nanofilled composite (Filtek Z-350 A2 shade, 3M ESPE, USA) and a self-etch adhesive (Xeno III, DENTSPLY/Caulk) using different composite placement techniques.
Materials And Methods: Standardized class-I cavities were prepared on 36 caries-free, extracted human premolars and were randomly assigned to three groups: (1) Horizontal incremental curing was done; each increment of thickness 1.5 mm was cured one after the other using curing unit (T-LED, Elca Technology, Italy).
[Effect of gilding technique on the release of elements from copper-based alloy post-core].
Sichuan Da Xue Xue Bao Yi Xue Ban
July 2007
Department of Frosthodontics,West China Stomatological Hospital, Sichuan University, Chengdu 610041, China.
Objective: To evaluate the effect of gilding technique on the release of element from copper-based alloy post-core exposed to artificial saliva.
Methods: The quantities of nickel ion and copper ion released from common copper-based alloy post-core (control group), blasting gilding copper-based alloy post-core (blasting group) and burnishing gilding Copper-based alloy post-core (burnishing group) in artificial saliva after 1 month,3 months,6 months and 8 months of exposure were measured with atomic absorption spectrophotometer. The tooth tissues were stripped off at the eighth month and the oxygenization on the surface of the posts were observed.
Comparison between two glass-ionomer sealants placed using finger pressure (ART approach) and a ball burnisher.
Am J Dent
June 2006
WHO Collaborating Center for Oral Health Care Planning and Future Scenarios, Raboud University Medical Center, Nijmegen, the Netherlands.
Purpose: To compare in vitro marginal leakage and fissure penetration depth of sealants placed under finger pressure (ART) and a ball burnisher.
Methods: High-viscosity glass-ionomer hand-mixed Fuji IX GP and encapsulated Fuji IX GP Fast were used to seal 72 patent occlusal pits and fissures according to the ART approach or with the aid of a ball burnisher in surgically removed molars. All teeth were thermocycled for 500 cycles in water between 6 and 55 degrees C, then varnished until 1 mm from the sealant, submerged in 1% methylene blue for 4 hours, had roots dissected, crowns embedded in epoxy resin and sectioned before examination with a light reflection microscope.
An investigation of microleakage from root-end fillings in ultrasonic retrograde cavities with or without finishing: a quantitative analysis.
Oral Surg Oral Med Oral Pathol Oral Radiol Endod
June 2005
Endodontic Unit, School of Dentistry of Piracicaba, State University of Campinas-UNICAMP- Piracicaba-SP, Brazil.
Objective: The aim of this study was to make a quantitative assessment of the sealing ability of Super-EBA, IRM, and Pro Root MTA root-end fillings subjected to 3 different finishing techniques.
Study Design: Eighty-one ultrasonically prepared root-end cavities in human canines were separated randomly into 3 test groups of 27 roots each. The cavities were filled with Super-EBA, IRM, or Pro Root MTA and finished by ball burnishing.
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