Advances in alginate impression materials: a review

Authors

  • Sahithi Alaghari Vishnu Dental College
  • Surekha Velagala Vishnu Dental College
  • Rama Krishna Alla Vishnu Dental College
  • Ramaraju AV Vishnu Dental College

DOI:

https://doi.org/10.37983/IJDM.2019.1203

Keywords:

Alginate, dust-free alginate, chromatic alginate, self-disinfectant alginate, tray adhesives, nanoparticles

Abstract

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.

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

Professor,

Department of Prosthodontics,

Vishnu Dental College,

Bhimavaram, Andhra Pradesh, India.

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Published

2019-11-15

Issue

Section

Review Articles