Treponema denticola is a type of bacteria that belongs to the spirochete family. It is commonly found in the human mouth and is associated with periodontal disease, which affects the gums and supporting structures of the teeth. This bacterium is anaerobic, meaning it thrives in environments with little to no oxygen. Treponema denticola plays a role in the complex ecosystem of oral microbiota. It can contribute to inflammation and tissue destruction in the gums, leading to conditions like gingivitis and periodontitis. Understanding this bacterium is important for developing effective treatments for oral health issues.