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1.
Dent Mater ; 9(6): 361-4, 1993 Nov.
Article in English | MEDLINE | ID: mdl-7988768

ABSTRACT

An oscillating rheometer was constructed to study the polymerization of light-cured dental composites. The instrument is based on the forced harmonic oscillator, where the polymerization of the sample leads to a reduction of amplitude of oscillations. The polymerization time as determined for different materials seemed to be influenced by the filler particle size. The results obtained for the viscosity and shear modulus for a class of samples agreed with values published using other instruments and methods.


Subject(s)
Composite Resins/chemistry , Light , Materials Testing/instrumentation , Particle Size , Rheology , Viscosity
2.
Odontol. mod ; 15(6): 16-21, jul. 1988. tab
Article in Portuguese | LILACS, BBO - Dentistry | ID: lil-138574

ABSTRACT

Ao se depararem com uma quantidade muito grande de instrumentos de acabamento de superfície das resinas compostas, os autores procuraram analisá-los, fazendo uma comparaçäo entre seus efeitos. Ensaiaram pontas diamantadas, discos coarse de Sof-Lex


Subject(s)
Composite Resins/analysis , Dental Instruments/statistics & numerical data , Dental Restoration, Permanent/instrumentation
3.
Odontol. mod ; 14(8): 27-9, set. 1987. tab, ilus
Article in Portuguese | BBO - Dentistry | ID: biblio-852371

ABSTRACT

Devido às dificuldades encontradas para o polimento homogêneo de corpos de resina composta, com lixa-tira, foi construído um aparelho elétrico (lixadeira) que muito auxiliou nos testes de 12 diferentes tipos de lixas-tiras


Subject(s)
Composite Resins , Dental Equipment
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