Can a tooth ache be caused by micro organisms?

Yes, a toothache can be caused by microorganisms, primarily bacteria that lead to tooth decay and gum disease. These bacteria produce acids that erode tooth enamel and can infect the dental pulp, resulting in pain. Additionally, infections from untreated cavities or gum disease can exacerbate discomfort, making it essential to maintain good oral hygiene and seek dental care when experiencing tooth pain.