Amalgam Cavity Preparation Pulpal Floor

Although conservation of the tooth structure is important the convenience form requires that the extent of the preparation provides adequate access and visibility. Flat pulpal floor resist forces directed in the long axis of the tooth. No disinfectant should be used to clean the cavity.

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Principles Of Tooth Preparation Class One

Class I Cavity Preparation

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Steps Of Cavity Preparation

When the cavity is shallow it is recommended to use resin composite since it does not carry the same risk of fracture under occlusal loads when used in thin sections as does amalgam.

Amalgam cavity preparation pulpal floor. This completes the initial amalgam preparation for class i caries. The pulpal floor of an occlusal amalgam preparation on a mandibular first premolar should slope apically from. Opposing walls of class 1 occlusal restorations should be parallel to each other or should converge slightly. Axial wall do not follow the bell shaped contour of crown but are parallel.

Principles in class ii cavity preparation. The bur enters the pits proper depth of 1 5 to 2 0 mm should be established. Done in order to correct occlusal disharmony produced by errors primarily in the a line angle not present on a class i cavity preparation on tooth 1 5 is what is the name of the area in which the resin of the adhesive system. Axial wall pulpal and gingival floors should meet each other at right angle.

The pulpal floor depending on the enamel thickness is almost always in dentin see fig. Introduction amalgam although a brittle material has been adequately serving as a restorative material since 175 years understanding of its properties and judgment of the preparation design are the vital factors controlling its use. The long axis of bur is held perpendicularly to the plane of the pulpal floor. The flat floor should be at the previously described initial pulpal floor depth of 1 5 to 2 mm and in sound enamel or dentin see 24.

Don t desiccate it. Cleansing of the cavity the prepared cavity should be free from all debris. Tooth preparation for class ii amalgam restorations and its modifications 2. Class i cavity preparation for amalgam.

Preparation technique class ist cavity ist type preparation starts by entering the deepest or most carious pits using a round carbide bur at high speed with air water spray. Academia edu is a platform for academics to share research papers. Cavity preparation is essentially a box in form with floor pulpal and four walls.