Below are listed some microorganisms (bacteria) that have been identified as living in root canal teeth, as discovered by ALT Lab.  This lab was developed by Drs. Boyd Haley and Kurt Pendergrass of the University of Kentucky.

Dr. Haley is a professor and the chairman of the Chemistry Department at the University of Kentucky.  He is a foremost researcher on toxicity of dental amalgams and root canals.   He is considered an authority on these subjects, and has presented scientific data before a Senate committee and other governmental groups on the toxicity of amalgam fillings and root canals.


Endodontic (root canal) Microorganisms

These are microorganisms (bacteria) that have been identified as living in root canal teeth

AN: Anaerobe G+/G-: Gram+/- FY: Fungus (48 Strains)/Yeast (20 Strains)

Actinomyces israelii F/Y

Actinomyces viscosus F/Y

Aerococcus G+

Bacteroides corporis AN

Bacteroides endodotalis AN

Bacteroides gingivalis AN

Bacteroides oralis AN

Bacteroides melaninogenicus AN

Candida albicans F/Y

Candida glabrata F/Y

Candida guilliermondii F/Y

Candida inconspicua F/Y

Enteroccus faecalis G+

Eubacterium aerofaciens AN/G+

Eubacterium alactolyticum AN/G+

Eubacterium comesii AN/G+

Eubacterium contortum AN/G+

Eubacterium lentum AN/G+

Fusobacterium nucleatum AN/G

Geotrichum cndidum F/Y

Haemophilius parainfluenzae G

Lactobacillus lactis AN/G+

Lactobacillus plantarum AN/G+

Neisseria species AN/G+

Peptococcus magnus AN/G+

Peptostreptoccus anaerobius AN/G+

Peptostreptoccus micros AN/G+

Peptostreptoccus prevotii AN/G+

Porphyromonas gingivalis

Prevotella buccae AN

Prevotella intermedia AN

Prevotella melaninogenica AN

Prevotella nigrescens AN

Prevotella oralis AN

Propionibacterium acnes AN/G+

Propionibacterium granulosum AN/G+

Proteus mirabilis G

Saccharomyces cerevisiae F/Y

Staphylococcus aureus G+

Streptococcus constellatus G+

Streptococcus epidermidi G+

Streptococcus intermedius G+

Streptococcus lactis G+

Streptococcus milleri II G+

Streptococcus mitis G+

Streptococcus morvillorum G+

Streptococcus mutans G+

Streptococcus salivarius G+

Streptococcus sanguis G+

Veillonella parvula AN

Ray G Behm Jr., DDS •  Natural Dentistry
127 No Garden Ave, Clearwater FL 33755  tel 727 446-6747