Bacterial and Dye Penetration through Interim Restorations Used During Endodontic Treatment of Molar Teeth  Pattama Chailertvanitkul, DDS, PhD, Paul V. Abbott, BDSc, MDS, Thomas V. Riley, BAppSc, MAppEpid, PhD, Namchai Sooksuntisakoonchai, DDS, MPH  Journal of Endodontics  Volume 35, Issue 7, Pages 1017-1022 (July 2009) DOI: 10.1016/j.joen.2009.04.019 Copyright © 2009 American Association of Endodontists Terms and Conditions

Figure 1 The Willytec dual-axis Chewing Simulator (courtesy of Dr Ray Heffer). Journal of Endodontics 2009 35, 1017-1022DOI: (10.1016/j.joen.2009.04.019) Copyright © 2009 American Association of Endodontists Terms and Conditions

Figure 2 Cross-section diagram of a mounted tooth in a sample holder (courtesy of Dr Ray Heffer). Journal of Endodontics 2009 35, 1017-1022DOI: (10.1016/j.joen.2009.04.019) Copyright © 2009 American Association of Endodontists Terms and Conditions

Figure 3 An example of a debonded Ketac Silver interim restoration that had dye penetration where no stainless steel band was used. Journal of Endodontics 2009 35, 1017-1022DOI: (10.1016/j.joen.2009.04.019) Copyright © 2009 American Association of Endodontists Terms and Conditions

Figure 4 An example of an intact Ketac Silver with stainless steel band interim restoration that had no evidence of dye penetration. Journal of Endodontics 2009 35, 1017-1022DOI: (10.1016/j.joen.2009.04.019) Copyright © 2009 American Association of Endodontists Terms and Conditions