specialized, non-toxic, water-soluble marking tools used for several clinical and lab procedures
- Denture Sore Spot Copying: Clinicians use them (frequently the red or blue color) to color over sore spots or ulcers directly on the patient's oral tissues. When the denture framework is seated over the wet surface under biting pressure, the ink transfers perfectly onto the underside of the denture base, highlighting the exact high spots that need to be trimmed
- Plaster Model Tracing: Dental technicians use them to draw structural reference margins, survey lines, or design boundaries on damp or wet gypsum stone dental models, as standard pencil lead will smudge or fail to adhere properly.
- Orthodontic Marking: They can be used to trace bracket alignment lines or mark precise bonding reference lines on natural teeth or clear aligner boundaries

