Dentinal Tubules
Microscopic channels that traverse the dentine from the pulp chamber to the outer dentino-enamel or dentino-cemental junction, carrying odontoblastic processes.
Full Definition
Dentinal tubules are fluid-filled microchannels running radially through dentine, housing the cytoplasmic extensions of odontoblasts. In endodontic editing, the term appears frequently in discussions of bacterial penetration, hydraulic conductance, and the rationale for irrigation protocols. Editors should note the British spelling 'dentine' versus the North American 'dentin' and apply the house style consistently. The tubules' density and diameter vary from the pulp wall to the periphery, a detail important in clinical-accuracy reviews. The term should not be pluralised inconsistently or conflated with dentinal cracks.
Usage
Usage note: Apply house style for 'dentine' (British/Australian) versus 'dentin' (North American) throughout the manuscript; do not mix spellings.
In Context
- "Bacterial invasion of dentinal tubules may extend several millimetres beyond the visible canal wall, complicating disinfection." — Peer-reviewed journal article on irrigation
- "The SEM images revealed complete obliteration of dentinal tubules by the calcium silicate sealer." — Research methods section