Breathing New Life into Alginates: A Journey of Reuse and Recycle
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Abstract
Various impression materials are used in dentistry. One such material used is ALGINATE. It is an irreversible hydrocolloid. The term ‘alginate’ was coined from the term ‘algin’. It is a polymer of anhydro beta D mannuronic acid of high molecular weight.
1. ADA Specification-18; ISO 1563:1990 2
2. TYPES (according to ADA Specification Number 18): 3
TYPE 1 – Fast setting
TYPE 2 – Normal setting
3. APPLICATIONS OF ALGINATES:
1. For making preliminary impressions for construction of custom tray for more accurate secondary impression for complete denture.
2. Impression making for orthodontic purposes.
3. For Duplicating models
4. Used for impression making in presence of undercuts
5. In impression making when there is excess of saliva
6. For making impressions for fabrication of temporaries of for indirect restorations.
4. ADVANTAGES:
1. Hydrophilic
2. Easy manipulation
3. Economical
5. DISADVANTAGES:
1. Electroplating not possible
2. Reuse is not possible
3. Strength is poor
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