Preparation (dentistry)

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A preparation in dentistry is the removal of hard tooth substance as a preparatory measure for a filling , crown , bridge or inlays . After the carious tooth structure has been removed, the cavity is prepared to accommodate the filling material. After the preparation, the function of the tooth can be restored with a filling. To prevent new caries, the enamel area should be prepared beyond the existing caries.

Cavity shapes

  • In the case of plastic filling material (e.g. amalgam ), the cavities are usually designed so that they are slightly wider in depth than in the upper area.
  • In the case of inlays , the cavity must at least be prepared with parallel walls, but usually somewhat conical (slightly expanded towards the outside).
  • With composite fillings (CID), less hard tooth substance is removed, as a retention form can usually be dispensed with.

source

  • D. Haunfelder, L. Hupfauf, W. Ketterl, G. Schmuth et al .: Praxis der Zahnheilkunde, chapter A9, p. 37ff, p. 55, chapter C4, p. 1, chapter C7, p. 30 , Verlag Urban and Schwarzenberg, Munich - Vienna - Baltimore