As late as 1500 AD toothworms were thought to be the main cause of dental disease.
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id say Milaria
Definitely. Periodontal disease can affect blood, muscle tissue and body chemistry. It can even be a major factor in cause of death.
Infection originating in decaying teeth can spread throughout the body.
No they thought that they were being punished from the gods.
Although it was once thought that a bad childhood could cause schizophrenia, the current understanding of schizophrenia is of a primarily neurological disease.
Sufficient cause is a cause without which will not cause the disease but with it will absolutely will cause the disease.
The only similarity between formaldehyde and asbestos is that both are thought to be able to cause cancer. Their forms, and the mechanisms by which they may cause that disease are very different.
Acid, which can erode your teeth and leads to cavities and can loosen your teeth. Not brushing, which leads to a massive build up of bacteria which can give you Gum Disease.
Miasma defined in the Freedictionary.com as a poisonous atmosphere formerly thought to rise from swamps and putrid matter and cause disease.
In general bacteria that cause disease are called pathogenic bacteria. The ones that do not cause disease are often referred to as "healthy" bacteria or "good bacteria" See Related Links for a good discussion on types of bacteria. The strain of E. Coli that lives in the mammalian gut does not cause any disease unless it were transplanted to elsewhere in the body.-- That means is DOES cause disease. Sorry,,had to add that because your answer was misleading. Bifidobacterium dentium. It is found in the digestive system and is thought to produce GABA, a naturally produced pain relieving agent and neurotransmitter in the human body.
I have never experienced headaches from dental x-rays.