ARTIFICIAL PALATE?INEFFICIENCY OF CAOUTCHOUC AND GUTTA-PERCHA.

The thermomechanical properties of gutta-percha. I. The compressibility of gutta-percha.

Sample wafers of compounded dental gutta-percha and uncompounded dental-grade gutta-percha were compression tested to 20,000 pounds in uniaxial and triaxial systerns. Unrestrained flow in the uniaxial series prevented development of stress levels sufficient to produce molecular compression. Negligible molecular compression did occur in the triaxial series but only above a stress level of approx...

Long-Retained Gutta Percha Pessary

Plus/gutta-percha, EndoREZ and RealSeal systems

test of AH Plus/gutta-percha, EndoREZ and RealSeal systems Alaa Abdul MAHDI1, Victoria BOLAÑOS-CARMONA2, Santiago GONZALEZ-LOPEZ3 1PhD student, Department of Stomatology, School of Dentistry, University of Granada, Granada, Spain. 2PhD, MD, Associate Professor, Department of Pediatric Dentistry, School of Dentistry, University of Granada, Granada, Spain. 3PhD, MD, Associate Professor, Departmen...

Comparison between gutta-percha and Resilon retreatment.

Retreatment procedures in endodontic practice require complete removal of the original root filling materials. The aim of this study was to compare the amount of residual filling material on the walls of root canals that were obturated with gutta-percha or Resilon. Thirty extracted single-rooted human teeth were selected and instrumented by RaCe rotary instruments up to MAF #35. They were rando...

Shrinkage of backfill gutta-percha upon cooling.

INTRODUCTION The temperature and related shrinking kinetics of gutta-percha injected from heat guns are not known; therefore, we investigated them in this study. METHODS The temperatures of 3 different backfill gutta-percha brands extruded from 3 commercially available heat guns set to 200°C were studied. To validate the results, temperature development of 1 gutta-percha brand injected from a...