Main aspects and goals of tooth preparation

Preparation – This is a dental method of extracting hard tissues of the tooth that are not viable and interfere with prosthetics or fillings. Preparation is the most popular procedure at the dentist's office. Tooth preparation is considered an operative intervention on the hard tissues of the tooth, which is carried out with rotating instruments. The procedure is accompanied by unpleasant pain sensations, during which the tooth is given the desired shape for further manipulations. Read the main aspects of tooth preparation at estet-portal.com.

What factors should be considered before preparing teeth?

The process of tooth preparation has 2 main goals. This is the removal of the volume of hard tissues of the tooth to create the necessary space for the future prosthesis, the formation of the necessary microrelief of the surface of the tooth stump and its geometric shape. When planning the volume and shape of the prepared cavity, it is important to consider several factors.

Factors to consider when preparing teeth:

• dental anatomy;
• its function and occlusal effect;
• aesthetic requirements;
• denture material used;
• remote possible consequences after the tooth preparation procedure.

How is the tooth preparation process carried out?

Tooth tissues affected by caries are often dissected. But there are times when it is necessary to prepare teeth with atypical cavities that are not affected by caries. For this, various excipients are used.

Tooth preparation in the presence of defects is carried out using oleic acid as a surfactant to reduce pain.

Oleic acid, when it hits the surface layer of enamel, has a disintegrating effect, which manifests itself in a decrease in the strength of the connection of the surface molecular layer of the tissue. After that, optimal conditions are created for processing the hard tissues of the tooth with a bur, for which much less physical effort is applied. At the same time, pain sensations are absent or minimally expressed.

In case of traumatic or chronic pulpitis, the tooth preparation method is used to open the cavity.

In this case, the preparation of the tooth is carried out only after the treatment of the oral cavity with antiseptics, after which the necrotic dentin is removed and a hole is made in the direction of the pulp horn. Then, using a sterile fissure burr, the hole is expanded, the supra-pulp fornix is ​​removed.

What are the two ways of preparing teeth?

There are two points of view regarding the scope of this method. Some authors insist on the removal of all overhanging edges of the dentin so that the walls of the carious defect and the tooth cavity form a continuous line. Using this method allows free access to the root canals. But with this approach, the dental crown is significantly weakened.

Other authors insist on a gentle preparation of the teeth, which does not involve the removal of overhanging dentine edges. This makes it possible to maintain the stability of the crown, but the process of extracting the pulp from the cavity of the tooth or root canals is very difficult.

Today, both methods of tooth preparation are used in practice, depending on the clinical situation. The lost crown in depulped teeth is restored with the help of prosthetics. In order to eliminate defects in pulpless teeth, plastic tabs, which are reinforced with pins, have become widely used.