In primary tooth for restoration before putting the filling u put.. you put the filling after proper cleaning and drying

In primary tooth for restoration before putting the filling u put:
a- base.
b- calcium hydroxide.
c- varnish.
d- you put the filling after proper cleaning and drying***

Dental catering, dental obturations or simply obturations, are treatments used to restore the function, integrity and morphology of the missing dental structure resulting from a caries or external trauma as well as for the replacement of Such a structure supported by dental implants.

They are of two main types - direct and indirect - and are also classified by location and by size. A filling of a radicular channel, for example, is a restoration technique used to fill the space where the dental pulp normally lies.

Teeth preparation:

Restoring a tooth in good shape and function requires two steps:

1- Prepare the tooth for the implementation of the catering material (s), and

2- Placement of these materials.

The preparation process generally consists in cutting the tooth with a rotary dental handpiece and dental strawberries or a dental laser to make room for the expected catering materials and to eliminate any dental caries or parts of the structurally unstable tooth. If the permanent restoration cannot be carried out immediately after preparing the tooth, a temporary catering can be carried out.

The prepared tooth, ready for the installation of catering materials, is generally called dental preparation. The materials used can be gold, amalgam, dental composites, ionomer glass cement or porcelain, among others. Preparations can be intracoronal or extracoronal.

Intracoronal preparations are those which serve to maintain the restoration material within the limits of the crown structure of a tooth. The examples include all cavity preparation classes for composites or amalgams as well as those for gold and porcelain inlays. Intracoronal preparations are also made as female receivers to receive the male components of removable partial.

The extracoronal preparations provide a nucleus or base on which the restoration material will be placed to bring the tooth back in a functional and aesthetic structure. The examples include crowns and onlays, as well as facets.

When preparing a tooth for restoration, a certain number of considerations will determine the type and extent of the preparation. The most important factor to consider is rot. For the most part, the extent of the caries will define the extent of the preparation, and in turn, the subsequent method and the materials appropriate for catering.

Another consideration is the unrealized dental structure. When preparing the tooth to receive a restoration, the unrealized enamel is removed to allow a more predictable restoration. Although the enamel is the hardest substance of the human body, it is particularly brittle and the enamel without support is easily fractured.

Direct restorations:

This technique is to place a soft or malleable shutter in the prepared tooth and to reconstruct the tooth. The material is then hardened and the tooth is restored.

The advantage of direct restorations is that they generally take quickly and can be put in place in a single procedure.

The dentist has the choice between different filling options. A decision is generally taken according to the location and severity of the associated cavity. Since the material must harden when in contact with the tooth, limited energy (heat) is transmitted to the tooth from the hardening process.

Indirect restorations:

In this technique, catering is made outside the mouth using the dental footprints of the prepared tooth. The current indirect restorations include inlays and onlays, crowns, bridges and facets.

Usually, a dental prosthetist makes indirect restoration from the files provided by the dentist. Finished catering is generally permanently stuck with dental cement.

It is often done in two separate visits to the dentist. The current indirect restorations are made using gold or ceramic.

During the preparation of indirect restoration, a temporary / temporary restoration is sometimes used to cover the prepared tooth to help keep the surrounding dental tissues.

Removable dental prostheses (mainly dental prostheses) are sometimes considered a form of indirect dental restoration, as they are designed to replace missing teeth.

There are many types of precision attachments (also called combined restorations) to facilitate removable prosthetic attachment to the teeth, in particular magnets, clips, hooks and implants which can themselves be considered as a form of restoration dental.

The CEREC method is a CAD/CAM restoration procedure in the chair. An optical footprint of the prepared tooth is taken using a camera.

Then, the specific software takes the digital image and converts it to a 3D virtual model on the computer screen.

A ceramic block corresponding to the shade of the tooth is placed in the milling machine. An all ceramic restoration of the color of the tooth is finished and ready to stick in place.

Another manufacturing method is to import STL and dental CAD files native in CAD/FAO software products that guide the user throughout the manufacturing process.

The software can select the tools, machining sequences and optimized cutting conditions for specific types of materials, such as titanium and zirconium, and for particular prostheses, such as headdresses and bridges.

In some cases, the complex nature of certain implants requires the use of 5 -axis machining methods to reach each part of the work.