Dental Products international trade and business.
Dental impressions are negative imprints of teeth and oral soft tissues from which a positive representation can be cast. They are used in prosthodontics (to make dentures), orthodontics, restorative dentistry, dental implantology and oral and maxillofacial surgery. [3]:136–137
- Rigidity- Inelastic (rigid) impression materials are used with patients with shallow undercuts.
- Elasticity- Elastic impression materials are used in patients with deep undercuts as it must be flexible enough to reach the end-point of the undercut.
These two properties are essential because patients have varying soft-tissue undercuts (shallow or deep undercuts). In order to obtain an accurate impression, a suitable property of impression material must be used. Impression materials are designed to be liquid or semi-solid when first mixed, then set hard in a few minutes, leaving imprints of oral structures.
Dental Products international trade and business.
Dental cements are used most often to bond indirect restorations such as crowns to the natural tooth surface. Examples include:
- Zinc Oxide cement—self setting and harden when in contact with saliva. Example brands: Cavit, Coltosol.
- Zinc Phosphate cement
- Zinc Polycarboxylate cement—Adheres to enamel and dentin. Example brands: PolyF.
- Glass Ionomer cement
- Resin based cement
- Cupper based cement
