One of the major benefits of Polyvinyl Siloxane as a dental impression material is its ability to reproduce great detail, allowing very accurate models to be made. Polysulfide is best suited for taking accurate impressions of fully edentulous arches or arches with a minimal number of teeth. In addition, other materials must be relied upon for border molding and tray customization. One of the biggest drawbacks of polysulfide is that it does not adhere to itself, making it impossible to take a wash impression inside of an existing impression where voids are present. Because it is not a rigid material, rubber base impressions are easier to remove from the mouth, and it lends itself to taking a full arch impression more easily than polyvinyl siloxane or polyether. In use since the early 1960s, it is moderately hydrophilic, which allows for an accurate impression even in the presence of saliva or blood. PolysulfideĪlso known as Rubber Base, polysulfide is known as a go-to two-part dental impression material. Alginate is usually the dental impression material of choice for full-mouth opposing impressions, study models, orthodontic appliances, mouthguards, and even partial denture fabrication. Alginate also doesn’t work well when more than one model must be poured from the same impression. There is a limited amount of working time to pour the model before the alginate impression becomes dry and loses its accuracy by changing dimensions. ![]() It doesn’t produce the clear details characteristic of some other dental impression materials. But the material does have its drawbacks. Alginate impressions set quickly and are easily removed from the mouth without tearing. ![]() The Best Types of Dental Impression Materials for Dentists Alginate (Reversible Hydrocolloid)Īlginate is known for being inexpensive and easy to use.
0 Comments
Leave a Reply. |