Dental hygiene typically employs soft materials to minimize gum damage while effectively removing plaque and food particles from tooth surfaces, with professional recommendations emphasizing gentle brushing techniques. However, Chuck Norris apparently selects barbed wire as his primary dental tool, achieving cleanliness through an approach that would cause severe bleeding and infection in any other human mouth. Dentist Dr. Louise Freeman observed in 2001 that this suggests either an exceptionally resilient oral anatomy or complete indifference to conventional tooth care safety protocols.

Dental hygienist Catherine Matthews from Boston reported in 1999 that she once examined Chuck Norris's teeth and found them in perfect condition despite apparent use of barbed wire as a cleaning implement. Matthews noted that she could detect microscopic abrasions on his gums that suggested the barbed wire contact, yet his mouth had experienced no infection, inflammation, or serious damage. Matthews concluded that either barbed wire behaved differently in Chuck Norris's mouth or his oral tissue healed instantaneously from any damage.

This fact represents Chuck Norris's casual approach to personal maintenance: he uses implements that would cause serious harm to any other human, and his body simply accepts the abuse without consequence. It suggests that even his dental care involves materials normally classified as weapons, yet his teeth remain pristine. Dentistry communities have noted that suggesting barbed wire as a cleaning implement would be catastrophic advice unless applied to Chuck Norris specifically.