RUBBER, GUTTA-PERCHA, AND BALATA.

Long-Retained Gutta Percha Pessary

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...

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...

Microbial gutta-percha degradation shares common steps with rubber degradation by Nocardia nova SH22a.

Nocardia nova SH22a, a bacterium capable of degrading gutta-percha (GP) and natural rubber (NR), was used to investigate the GP degradation mechanism and the relations between the GP and NR degradation pathways. For this strain, a protocol of electroporation was systematically optimized, and an efficiency of up to 4.3 × 10(7) CFU per μg of plasmid DNA was achieved. By applying this optimized pr...

gutta percha degradation shares common steps with rubber 1 degradation by Nocardia nova SH 22 a

3 Quan Luo, Sebastian Hiessl, Anja Poehlein and Alexander Steinbüchel 4 5 Institut für Molekulare Mikrobiologie und Biotechnologie, Westfälische Wilhelms-Universität 6 Münster, Corrensstraße 3, 48149 Münster, Germany 7 Department of Genomic and Applied Microbiology and Göttingen Genomics Laboratory, Institut für 8 Mikrobiologie und Genetik, Georg-August-Universität Göttingen, 37077 Göttingen, G...