Background

While fabrication of a vital tooth structure it is mandatory to give a provisional restoration to the patient for comfort, esthetics and function. In the mean time it is important to maintain the pulpal health of the tooth by saving it from the rise in temperature by fabrication of provisional restoration by direct method which is less time consuming and can be done chair side. This study is based on the comparison of the different materials and methods which are best suited for fabrication of provisional restoration by direct method.

Material and Methods

A heat transferring silicon compound was then inserted with the help of an instrument into the empty pulp chamber from of a freshly extracted mandibular 1^st molar. A vacuum form matrix of 2 mm thickness was fabricated and the tooth was prepared for a full ceramic coronal restoration. The intra–pulpal rise in temperature caused due to five different temporary crown and bridge resin material over the prepared tooth was recorded.

Results

The results demonstrate that when no matrices were used the mean maximum temperature rise was seen with DPI which was 4.320⁰ C. The mean maximum temperature rise shown with use of any matrix was with DPI with use of Polypropylene matrices which was 3.820⁰ C and the mean minimum temperature which was produced by Protemp with the use of polyvinyl siloxane matrices which was 2.180⁰ C

Conclusion

The amount of heat generated during polymerization of resinous materials is proportional to the volume of material used; therefore higher temperatures should be expected when restoring multiple units and replacing missing teeth with provisional fixed partial dentures.