Condensation pressure during amalgam placement in patients

European Journal of Oral Sciences - Tập 103 Số 6 - Trang 388-393 - 1995
Adrian Lussi1, Matthias Brünner1, Peter Portmann1, Walter Bürgin1
1Department of Operative, Preventive and Pediatric Dentistry, University of Bern, School of Dental Medicine, Freiburgstrasse 7, CH – 3010 Bern, Switzerland

Tóm tắt

The purpose of this study was to investigate the condensation pressure during amalgam placement in patients. Forty‐four practitioners were asked to fill two class 2 cavities in the lower jaw on their patients in their own practice with the aid of a force‐measuring plugger. This device, with semiconductor strain gauges, allowed the dentist to have an identical tactile feedback as with any other plugger. Three different amalgams, with different shapes of alloy particles, were tested. The results showed a maximum condensation pressure of 8.9±2.4 MPa and 5.5±1.8 MPa with a small and a large amalgam plugger, respectively. Average condensation pressures were 3.7±1.3 MPa for the small and 2.2±0.9 MPa for the large instrument. The total working time required to fill a cavity was on average 131 s; the amalgam was effectively condensed for 44 s. No significant differences between amalgams with different shapes of alloy particles, no influence of time of day, and no difference between female and male dentists were found. This study showed that the condensation pressure is lower than often recommended, and that it is not statistically different from the values obtained in a previous laboratory study (1).

Từ khóa


Tài liệu tham khảo

10.1177/00220345870660030601

10.3109/00016356609028727

Clark AE, 1981, The influence of condensing pressure on the strength of three dental amalgams, Operative Dent, 6, 6

10.3109/00016358309162343

10.1016/0022-3913(84)90094-5

10.1111/j.1365-2842.1987.tb00702.x

Rebel H., 1950, Konservierende Zahnheilkunde, 139

Jørgensen KD., 1977, Amalgame in der Zahnheilkunde

Mayer R., 1984, Amalgam‐Kondensation – maschinell oder manuell, Dtsch Zahnärztl Z, 39, 736

10.14219/jada.archive.1965.0099

Basker RM, 1968, Condensation of amalgam. The clinical measurement of forces and rates of packing, Br Dent J, 124, 451

Brown IH, 1993, Variation in condensation pressure during clinical packing of amalgam restorations, Am J Dent, 6, 255

10.1038/sj.bdj.4802666

Hegdahl T, 1970, Porosity of spherical amalgam, Scand J Dent Res, 78, 62

10.1016/0022-3913(85)90548-7

10.14219/jada.archive.1967.0160

Brown IH, 1993, Alloy particle shape and sensitivity of high‐copper amalgams to manipulative variables, Am J Dent, 6, 248

10.3109/00016358009003482

Osborne WJ., 1990, Three year clinical performance of eight amalgam alloys, Am J Dent, 3, 157

Lehmann G., 1965, Arbeitsrnedizin I, 349

Thông tin
Thông tin xuất bản

European Journal of Oral Sciences

Tập 103 Số 6

388-393

Thông tin tác giả