EVALUATION OF ACCURACY OF IMPRESSION MATERIALS WITH DIFFERENT MIXING TECHNIQUE
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Abstract
Purpose: To investigate gypsum compatibility and dimensional stability of irreversible hydrocolloid impression materials with three mixing techniques. A comparison between vacuum-mixed, mechanically-mixed and manually-mixed techniques was evaluated for each impression material.
Materials and Methods: Three irreversible hydrocolloid impression materials Kromopan 100® (Lascod™), Identic® (Dux dental™), and Jeltrate Plus® (Dentsply™) were tested gypsum compatibility in accordance with ANSI/ADA Specification No. 18 for alginate impression materials. The test for linear dimensional stability was tested in accordance with ANSI/ADA Specification No. 19 for elastomeric impression materials. A One-way ANOVA test was used to analyze dimensional stability at a significance level of (p < 0.05).
Conclusion: The vacuum mixing technique facilitates the mixing of irreversible hydrocolloid impression materials and improves the compatibility with gypsum material and reproduces a more dimensionally accurate cast than the other mixing techniques.
References
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Tanu Gupta
Assistant Professor, Department of Prosthodontics, Crown & Bridge, School of Dental Sciences, Sharda University, Greater Noida
Anurag Hasti
Professor, Department of Prosthodontics and Crown and Bridge, School of Dental Sciences, Sharda University, Greater Noida
Sachin Kumar
Associate Professor, Department of Oral and Maxillofacial Surgery, School of Dental Sciences, Sharda University, Greater Noida
Vinay Yadav
Tutor, Department of Prosthodontics, Crown & Bridge, School of Dental Sciences, Sharda University, Greater Noida