UNIVERSITAS AIRLANGGA



Detail Article

Dental Journal (Majalah Kedokteran Gigi)

ISSN 1978-3728

Vol. 42 / No. 3 / Published : 2009-07

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Original Article :

Functional relationship of room temperature and setting time of alginate impression material

Author :

  1. Dyah Irnawati*1
  2. Siti Sunarintyas*2
  1. Department of Dental Biomaterials
    Faculty of Dentistry, Gadjah Mada University
    Yogyakarta - Indonesia
  2. Department of Dental Biomaterials
    Faculty of Dentistry, Gadjah Mada University
    Yogyakarta - Indonesia

Abstract :

Background: Indonesia is a tropical country with temperature variation. A lot of dental clinics do not use air conditioner. The room temperature influences water temperature for mixing alginate impression materials. Purpose: The aim of this study was to investigate the functional relationship of room temperature and initial setting time of alginate impression materials. Methods: The New Kromopan® alginate (normal and fast sets) were used. The initial setting time were tested at 23 (control), 24, 25, 26, 27, 28, 29, 30 and 31 degrees Celcius room temperatures (n = 5). The initial setting time was tested based on ANSI/ADA Specification no. 18 (ISO 1563). The alginate powder was mixed with distilled water (23/50 ratio), put in the metal ring mould, and the initial setting time was measured by test rod. Data were statistically analyzed by linear regression (a = 0.05). Rresult: The initial setting times were 149.60 ±0.55 (control) and 96.40 ± 0.89 (31° C) seconds for normal set, and 122.00 ± 1.00 (control) and 69.60 ± 0.55 (31° C) seconds for fast set. The coefficient of determination of room temperature to initial setting time of alginate were R2 = 0.74 (normal set) andR2 = 0.88 (fast set). The regression equation for normal set was Y = 257.6 – 5.5 X (p < 0.01) and fast set was Y = 237.7 – 5.6 X(p < 0.01). Conclusions: The room temperature gave high contribution and became a strength predictor for initial setting time of alginates. The share contribution to the setting time was 0.74% for normal set and 0.88% for fast set alginates.

Keyword :

alginates, room temperature, initial setting time,


References :





Archive Article

Cover Media Content

Volume : 42 / No. : 3 / Pub. : 2009-09
  1. Treatment Of Recurrent Aphthous Stomatitis Major With Metronidazole And Ciprofloxacin
  2. Mechanical Properties Of Carving Wax With Various Ca-bentonite Filler Composition
  3. Immunoglobulin-g Level On Aggressive Periodontitis Patients Treated With Clindamycin
  4. Color Stability Of Visible Light Cured Composite Resin After Soft Drink Immersion
  5. Storage Duration Effect On Deformation Recovery Of Repacked Alginates
  6. The Influence Of Xylitol Containing Toothpaste On Plaque Formation Inhibition On Fixed Bridge
  7. Functional Relationship Of Room Temperature And Setting Time Of Alginate Impression Material
  8. The Role Of  Msx1 And Pax9 In Pathogenetic Mechanisms Of  Tooth Agenesis
  9. The Use Of Holmium-yttrium Aluminum Garnet Laser As Pit And Fissure Cleaner

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