Meet Td: The Deep Diver 🦠
Tissue-Invasive Spirochete | Red Complex
Treponema denticola — or Td — is a highly mobile, tissue-invasive bacterium.
Think of Td as “The Deep Diver.” It can move into gum tissue and is associated with bleeding, deep periodontal pockets, and rapid disease progression.
Td is also often seen when periodontal disease isn’t improving as expected with routine treatment and is commonly found in peri-implant infections.
Quick way to remember Td:
🔴 Red Complex
🏊 The Deep Diver
🦠 Tissue-invasive spirochete
📍 Think deep pockets + bleeding
📈 Associated with rapid disease progression
🔄 May be seen in disease that isn’t responding as expected
🦷 Commonly found in peri-implant infections
Seeing Td on a MicrobeLinkDx® Report?
The level of Td, other bacteria present, and the patient’s clinical findings all help provide context when interpreting the result.
Td Research & Updates
We’ll continue adding new research, oral-systemic findings, clinical information, and resources related to Td as they become available.








