Final answer:
To alleviate dental fears in children, tell the truth about potential discomfort, use positive reinforcement and praise, familiarize them with dental instruments, and allow comfort items. Lying about pain should be avoided.
Step-by-step explanation:
To alleviate a child's fear of dental treatment, the technique that should not be used is telling the child that the treatment won't hurt at all. This can lead to a loss of trust if the child experiences any discomfort. Instead, positive reinforcement and praise, showing the child the dental instruments to familiarize them without causing fear, and allowing the child to bring a comfort item such as a stuffed toy can be effective strategies in easing dental anxiety.