There are many kinds of prosthodontic materials, and different materials should be selected according to different situations.
1, according to the nature of the material, mercury agent class: composed of mercury and alloy powder;
Resins: there are synthetic resin composite resin and natural resin gums;
Metal salt cementing powder: such as zinc phosphate cementing powder.
2. According to the retention time of the material in the cave, it can be divided into short-term use materials, such as temporary hole sealing materials used in the treatment process, clove oil zinc oxide cementing powder can be used within 2 weeks, zinc phosphate cementing powder can be used within half a year;
Long-term use of materials, namely permanent filling materials, in the hole to replace the defect of dentin long-term retention, clinical use is more silver amalgam, composite resin, etc.
There’s a silver amalgam in the prosthesis.
It is an amalgam compound of interaction between mercury and silver-tin alloy powder and is most commonly used clinically.
It is mainly used for class I and II holes that need to bear dental force and class V holes that need not consider aesthetics.
A hole for clasping the abutment teeth;
The post core or the inner filling body of the full crown restoration.
When silver amalgam is used to restore teeth, it is necessary to maintain a certain volume so that the teeth can withstand the resultant force without breaking.
Since silver amalgam and tooth tissue do not have adhesive property, it is necessary to prepare a box hole, design a good retention shape, make the two closely fit, mutually chimerism, good moisture isolation, in order to make the silver amalgam repair teeth firm and lasting.
Another important component in dental restorative materials – composite resin: it is an organic synthetic resin filled with a large number of specially treated inorganic materials, with the help of tooth surface treatment technology, so that it is bonded to the tooth hard tissue, mostly used for the filling of class III holes, class V holes;
There are also high strength composite resins available for filling class I and II holes in posterior teeth.
The adhesive technique can also be used to repair the affected teeth with class IV holes and severe dental defects.
Photosensitive curing composite resin, its color is stable, strong adhesion, especially suitable for anterior teeth beauty restoration;
Chemically CURED COMPOSITE RESIN, EASY TO operate, although slight color change, is suitable for posterior teeth and lingual (palatal) lateral cavity of anterior teeth.
Polycarboxylate cementable powder (also known as polyacrylic acid cementable powder) : is a kind of substrate and cementable material.
It CAN BE USED AS THE BOTTOM MATERIAL OF the HOLE, THE SEALING material OF the hole within half a year, the filling material of the root canal, the crown bridge of the denture restoration with the binder, and the EXCIpient can be added as the periodontal plug treatment agent.
Glass ION-POLYMERIZED CEMENTATION POWDER: IT IS a kind OF MULTIPURPOSE material WITH light stimulation to dental pulp and adhesive property to tooth hard tissue, but lower strength than silver amalgam.
It is suitable for CLASS III and CLASS V cavities. It is used to fill deciduous teeth and as a cavity sealant to prevent caries.
Zinc phosphate cement powder: also known as permanent cement powder, zinc cement.
It IS USED AS THE UPPER BEARING MATERIAL OF DOUBLE BOTTOM OF DEEP HOLE, THE SEALING MATERIAL OF hole WITHIN HALF a year, AND also used for crown AND bridge repair of tooth restoration.
Clove oil zinc oxide cementing powder: also known as temporary cementing powder, butyl oxygen paste.
The BOTTOM LAYER MATERIAL WITHOUT BEARING FORCE, OR THE SINGLE LAYER MATERIAL WITHOUT BEARING FORCE, IS USED AS THE TEMPORARY SEALING MATERIAL OF THE HOLE FOR 1-2 weeks, and also AS THE filling material OF the root canal. Excipient is added as the periodontal plugging agent.
Calcium hydroxide cementing powder is a new type of dental prosthodontic material with pulp protection substrate.
Used AS THE BOTTOM material FOR CLASS III AND V holes, used as the pulp protection substrate material for composite resin blocking pulp stimulation, and used as direct and indirect pulp capping agent.
Dental glue: Heated to 40¡ãC to become soft, plasticity, after cooling to harden.
It can be used as an auxiliary material for root canal filling, temporarily seal the hole, or make temperature test of teeth after heating.
