Companion Animal Dental Chews: Evidence and Welfare Benefit

Dental chews and treats vary enormously in their evidence base. Understanding what actually works helps owners make welfare-positive choices for their pets' oral health.

Key Facts

The Veterinary Oral Health Council (VOHC) accepts products that demonstrate measurable plaque or tartar reduction
VOHC-accepted products include specific dental chews, water additives, and some dental diets
Many dental products marketed as beneficial have no independent evidence of efficacy
Dental chews work by mechanical abrasion during chewing — they must be appropriate size and hardness
Hard chews including antlers, bones, and nylon toys can cause slab fractures of teeth — a painful welfare harm
Rawhide chews pose gastrointestinal obstruction risks and may be treated with harmful chemicals
Daily tooth brushing remains the gold standard — dental chews are supplementary, not equivalent

Welfare Considerations

Dental chew selection has direct welfare implications — the right product provides genuine oral health benefit while the wrong product can cause dental fractures more harmful than the plaque it was intended to prevent. The "nothing harder than the tooth" principle guides safe chew selection: if a product cannot be bent or indented with thumbnail pressure, it poses fracture risk. Many popular hard chews — bones, antlers, compressed rawhide sticks — are in this category. VOHC-accepted products provide a reliable quality filter, identifying products with demonstrated efficacy. The welfare benefit of supporting oral health through an evidence-based daily routine — combination of brushing and VOHC-accepted supplementary products — significantly reduces the frequency of painful dental procedures and chronic oral discomfort.

What You Can Do

Choose only VOHC-accepted dental products for proven efficacy
Apply the "bend test" — avoid any chew harder than the tooth itself
Do not give antlers, hard bones, or compressed rawhide sticks as dental treats
Use dental chews as supplements to brushing, not replacements
Discuss dental home care options with your vet and get species-specific recommendations