[Axial compressive strength of amalgam fillings in correlation with cavity preparation].
Different types of cavities were prepared in 96 model teeth: simple preparations without ledges and with Amalgapins, slots or a post; proximal box preparations with an occlusal ledge, and box preparations with or without Amalgapins or slots. The amalgam fillings were subjected to axial load by means of a Zwick machine until the filling or the tooth fractured.


RESULTS
--Occlusal ledges and box preparations allow high load values. --Surprisingly high loads can be placed on simple preparations without ledges but with a post. --Preparations without ledges but with Amalgapins or slots rate lowest. --In box preparations and preparations with ledges, Amalgapins or slots fail to offer any significant increase in compressive strength.
Mangklabruks
S
S
Heidemann
D
D
D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000379:methods*; D003799:Dental Stress Analysis; D008422:Materials Testing; D011312:Pressure
D003723:Dental Amalgam
Axiale Belastbarkeit von Amalgamfüllungen in Abhängigkeit von der Präparation.