Final answer:
The Faces Pain Scale, specifically the Wong-Baker Faces Pain Scale, is appropriate for measuring pain in dementia patients because it uses facial expressions to indicate levels of pain on a scale of 0-10.
Step-by-step explanation:
The pain measuring scale suitable for a dementia patient is the Faces Pain Scale. Specifically designed scales like this one take into account the cognitive impairments that may affect the person's ability to effectively communicate or understand other types of pain assessments. The Wong-Baker Faces Pain Scale is an example where patients rate their pain on a scale of 0-10 using facial expressions to depict various levels of distress, making it a viable option for patients with communication challenges such as those posed by dementia.