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Penetration of Radiocalcium at Margins of Acrylic Restorations Made by Compression and Noncompression Technics

1953; Elsevier BV; Volume: 47; Issue: 6 Linguagem: Inglês

10.14219/jada.archive.1953.0236

1943-4723

Robert E. Sausen, W. D. Armstrong, William J. Simon,

Dental Trauma and Treatments

Sausen, Armstrong and Simon, of the University of Minnesota, have been able to determine the relative efficiency of pressure and brush technics in the placement of self-cured resin fillings in cavities through the use of radioactive calcium chloride tracer solutions. Fillings were studied with and without water immersion. These investigators have been able to establish that, under their experimental conditions, the brush technic offers some advantages over the pressure technic in the placement of these acrylic fillings in that the marginal seal seems superior when the brush technic is used. The authors point out that further tests are necessary; however, they are to be complimented on their development of this tracer technic with radioisotopes for testing the marginal seal of fillings, and their demonstration of how different clinical technics can be tested in the laboratory. Thereby much information can be made available immediately, and hundreds of fillings will not have to be placed in the mouths of numerous individuals which entails waiting for extended periods of time before final analysis of the results is possible. Sausen, Armstrong and Simon, of the University of Minnesota, have been able to determine the relative efficiency of pressure and brush technics in the placement of self-cured resin fillings in cavities through the use of radioactive calcium chloride tracer solutions. Fillings were studied with and without water immersion. These investigators have been able to establish that, under their experimental conditions, the brush technic offers some advantages over the pressure technic in the placement of these acrylic fillings in that the marginal seal seems superior when the brush technic is used. The authors point out that further tests are necessary; however, they are to be complimented on their development of this tracer technic with radioisotopes for testing the marginal seal of fillings, and their demonstration of how different clinical technics can be tested in the laboratory. Thereby much information can be made available immediately, and hundreds of fillings will not have to be placed in the mouths of numerous individuals which entails waiting for extended periods of time before final analysis of the results is possible.