Disintegration in water of a newly
developed zinc oxide-calcium sulfate based
temporary filling material
Authors :
- Supatchara Boonyawee D.D.S.
- Janejira Thirawat D.D.S., M.Sc.D. (Endodontics), M.S. (Health Development)
- Niyom Thamrongananskul D.D.S., M.Sc.D. (Prosthodontics), Ph.D. (Oral Biology)
Abstract :
Objective To develop zinc oxide calcium sulfate based temporary filling material with less disintegration
in water.
Materials and methods Four formulas of temporary filling materials were prepared by altering the
ratio of calcium sulfate and zinc oxide. Cavit was used as a control group. Twenty specimens from each
group were tested to find the mean percentage of disintegration in each group. One-way ANOVA and
Bonferroni multiple comparison were used to analyze data.
Results The mean percentages of disintegration of the newly developed temporary filling materials
were 8.884 ± 0.789, 4.930 ± 1.157, 3.629 ± 1.039 and 10.594 ± 1.097 in specimens of formula 1, formula
2, formula 3 and formula 4, whereas Cavit was 13.455 ± 1.185. All groups of newly developed
temporary filling materials were significantly different between groups and significantly lower than
Cavit (p < 0.05).
Conclusion The newly developed temporary filling materials from four formulas were significantly
less disintegrated than Cavit.
(CU Dent J. 2008;31:331-8)
Keywords :
disintegration in water; zinc oxide-calcium sulfate based temporary filling material
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