Which of the following practices is considered unethical in dentistry?

Billing for services not rendered is considered unethical in dentistry because it violates the trust between a dentist and their patients, as well as legal regulations governing medical billing practices. Such conduct constitutes fraud, as it involves charging patients or insurance companies for procedures or services that were never actually provided. This practice undermines the integrity of the dental profession and can lead to serious legal consequences for the practitioner involved. It is essential for dental professionals to maintain transparency and honesty in their billing practices to ensure they uphold the ethical standards of the profession and protect patient welfare.