"Modern Dental Assisting" textbooks typically cover a comprehensive range of topics related to dental assisting. These may include:

1. **Dental Anatomy and Terminology:** Understanding the structure of the teeth, oral cavity, and related terminology.

2. **Clinical Procedures:** Detailing the step-by-step procedures involved in dental treatments, such as dental cleanings, X-rays, and dental restorations.

3. **Infection Control:** Emphasizing the importance of maintaining a sterile environment to prevent the spread of infections in the dental office.

4. **Radiography:** Explaining the principles and techniques of dental radiography, including X-ray positioning and safety measures.

5. **Patient Care:** Covering communication skills, patient education, and the ability to provide quality care in a dental setting.

6. **Dental Materials:** Describing the various materials used in dental procedures, including their properties and applications.

7. **Dental Office Management:** Providing insight into the administrative aspects of running a dental office, including appointment scheduling, record-keeping, and insurance billing.

8. **Emergencies in the Dental Office:** Preparing dental assistants to handle emergency situations that may arise during dental procedures.

9. **Legal and Ethical Considerations:** Highlighting the ethical and legal responsibilities of dental assistants in patient care and office management.

10. **Professional Development:** Focusing on ongoing education, certification, and staying current with advancements in dental technology and procedures.

If the 13th edition is available, it may include updates to reflect changes in dental practices, technology, and educational standards. You may want to check the book's official website or consult with the publisher for the most accurate and up-to-date information on the contents of the 13th edition.