Changes in setting time of alginate impression material with different water temperature

Abstract

Background: Previous studies showed that setting process of alginates can be influenced by temperature. Purpose: To determine the changes in setting time due to differences in water temperature and to determine the correlation between water temperature and the setting time. Methods: Seven groups of dough alginate were prepared by mixing alginate powder and water, each using a temperature between 13° C-28° C with a interval of 2.5° C. A sample mold ( = 30 mm, t = 16 mm) was placed on a flat plate and filled with doug alginate. Immediately the flat end of a polished acrylic rod was placed in contact with the surface of dough alginate. Setting time of alginat was measured from the starting of the mix to the time when the alginate does not adhere to the end of the rod. Setting time alginate data were analyzed using one way ANOVA, LSD and Pearson. results: Setting time of alginate with water temperature between 13° C-28° C were 87 to 119.4 seconds and were significantly different (p < 0.01). The setting time between group were also significantly different (p<0.01). There was an inverse correlation between water temperature and the setting time (r =-0.968). Conclusion: Water temperature between 13° C-28°C with a difference of 2.5° C produced significant differences in alginate setting time; the lower the water temperature being used the longer the setting time was produced

Enhancing retention and esthetics of fabricated silicone finger prosthesis using stump reduction technique and customized acrylic nail

“…To get adequate working time, chilled water was used to manipulate irreversible hydrocolloid impression material. [ 3 ]…”

Pengaruh suhu air terhadap setting time dari bahan cetak alginat

“…1 Selain itu, pemilihan alginat dengan setting time yang singkat juga diperlukan pada pasien dengan refleks muntah yang sensitif. 11 Regulasi setting time dapat dicapai dengan beberapa hal, di antaranya penambahan akselerator atau retarder pada proses manufacturing, 1,2,6,12 mengubah suhu air, 7,[11][12][13] serta mengubah rasio air terhadap bubuk (namun perubahan rasio ini dapat memengaruhi sifat mekanis dari gel alginat). 1,11,14 Dalam penggunaannya di klinik kedokteran gigi, yang paling sering digunakan ialah alginat tipe normal.…”

“…Sebaliknya, suhu yang rendah dapat menurunkan efisiensi tumbukan antar molekul, sehingga reaksi setting dari alginat terjadi lebih lama. 12,15 Pada penelitian yang dilakukan oleh Indrani dan Matram, 12 telah dibuktikan bahwa kenaikan suhu akan mempersingkat setting time dari alginat. Penelitian ini menggunakan suhu dari 13°C hingga 28°C dengan interval 2,5°C.…”

Pengaruh Kondisi Penyimpanan Terhadap Setting Time Bahan Cetak Alginat

“…Namun, kondisi penyimpanan bahan kedokteran gigi yang tidak tepat dapat memperburuk kualitas bahan tersebut. 5 Suhu, kelembapan, waktu penyimpanan, dan wadah penyimpanan dapat mempengaruhi kualitas bahan kedokteran gigi. 6 Berdasarkan hasil penelitian A Rahmadina, S Triaminingsih, dkk.…”