Advances in alginate impression materials: a review

Main Article Content

Sahithi Alaghari
Surekha Velagala
Rama Krishna Alla
Ramaraju AV


Alginate is an elastic irreversible hydrocolloid which has various applications in dentistry. The applications of alginates include making impressions of edentulous and partially edentulous arches, duplication of casts, and for making study models. Alginates possesses numerous vital properties such as hydrophilicity, ability to record finer details, elastic recovery and inexpensive; makes this material widely used in dentistry. Though alginate is the most commonly used impression material, it has some inherent disadvantages. Alginates contain low-density fine filler particles, which may arise in the form of dust and inhalation these dust particles may cause respiratory problems. Further, they are highly dimensionally unstable due to syneresis & imbibition. Besides, alginates do not adhere to non-perforated trays, low viscosity resulting in gag reflex in some patients, and the inability to identify the correct consistency to load. Several modifications were made in the composition of conventional alginates to address their shortcomings. This article reviewed various recent advances in the alginate impression materials and their performance.

Article Details

How to Cite
Alaghari, S., Velagala, S., Alla, R. K., & AV, R. (2019). Advances in alginate impression materials: a review. International Journal of Dental Materials, 1(2), 55–59.
Author Biographies

Surekha Velagala, Vishnu Dental College

Undergraduate student,

Vishnu Dental College,

Bhimavaram, Andhra Pradesh, India.

Rama Krishna Alla, Vishnu Dental College

Assistant Professor,

Department of Dental Materials

Vishnu Dental College,

Bhimavaram, Andhra Pradesh, India.

Ramaraju AV, Vishnu Dental College


Department of Prosthodontics,

Vishnu Dental College,

Bhimavaram, Andhra Pradesh, India.

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