Formaldehyde. Formaldehyde is a known human carcinogen widely used in many consumer products, including building materials, pressed wood, cosmetics, shoe-care products, and textiles. Natural Resources Defense Council's formaldehyde fact sheet.ormaldehyde. Formaldehyde is a known human carcinogen widely used in many consumer products, including building materials, pressed wood, cosmetics, shoe-care products, and textiles. Natural Resources Defense Council's formaldehyde fact sheet.
This is often caused by the blockage or inflammation of the salivary gland duct. Viruses and other medical conditions can also reduce saliva production, including: 1  mumps (a contagious viral infection that is most common among children who have not been immunized). 2  HIV. salivary gland infection typically results from a bacterial infection. Staphylococcus aureus is the most common. Others include: Streptococcus viridans, Haemophilus influenzae, Streptococcus pyogenes, and Escherichia coli.
Periodontal disease is not contagious and is not a condition you can catch from another person. The condition also known as gum disease (loosening of teeth) is not even caused by decayed teeth, and even healthy teeth can be affected. The disease often starts between the teeth where cleaning is more difficult.