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Case Report
Use of temporary filling material for index fabrication in Class IV resin composite restoration
Kun-Young Kim, Sun-Young Kim, Duck-Su Kim, Kyoung-Kyu Choi
Restor Dent Endod 2013;38(2):85-89.   Published online May 28, 2013
DOI: https://doi.org/10.5395/rde.2013.38.2.85
AbstractAbstract PDFPubReaderePub

When a patient with a fractured anterior tooth visits the clinic, clinician has to restore the tooth esthetically and quickly. For esthetic resin restoration, clinician can use 'Natural Layering technique' and an index for palatal wall may be needed. In this case report, we introduce pre-restoration index technique on a Class IV defect, in which a temporary filling material is used for easy restoration. Chair-side index fabrication for Class IV restoration is convenient and makes a single-visit treatment possible.

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Original Article
Polymerization shrinkage, hygroscopic expansion and microleakage of resin-based temporary filling materials
Nak Yeon Cho, In-Bog Lee
J Korean Acad Conserv Dent 2008;33(2):115-124.   Published online March 31, 2008
DOI: https://doi.org/10.5395/JKACD.2008.33.2.115
AbstractAbstract PDFPubReaderePub

The purpose of this study was to measure the polymerization shrinkage and hygroscopic expansion of resin-based temporary filling materials and to evaluate microleakage at the interface between the materials and cavity wall.

Five resin-based temporary filing materials were investigated: Fermit (Vivadent), Quicks (Dentkist), Provifil (Promedica), Spacer (Vericom), Clip (Voco). Caviton (GC) was also included for comparison. Polymerization shrinkage of five resin-based temporary filling materials was measured using the bonded disc method. For the measurement of hygroscopic expansion, the discs of six cured temporary filling materials were immersed in saline and a LVDT displacement sensor was used to measure the expansion for 7 days. For estimating of microleakage, Class I cavities were prepared on 120 extracted human molars and randomly assigned to 6 groups of 20 each. The cavities in each group were filled with six temporary filling materials. All specimens were submitted to 1000 thermo-cycles, with temperature varying from 5℃/55℃. Microleakage was determined using a dye penetration test.

The results were as follows:

Fermit had significantly less polymerization shrinkage than the other resin-based temporary filling materials. Fermit (0.22 %) < Spacer (0.38 %) < Quicks (0.64 %), Provifil (0.67 %), Clip (0.67 %)

Resin-based temporary filling materials showed 0.43 - 1.1 % expansion in 7 days.

Fermit showed the greatest leakage, while Quicks exhibited the least leakage.

There are no correlation between polymerization shrinkage or hygroscopic expansion and microleakage of resin-based temporary filling materials.

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