DMD Study Guide 2026
Everything you need to pass the DMD exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.
📋 DMD Exam Format at a Glance
📚 DMD Topics to Study (21)
✍️ Sample DMD Questions & Answers
1. Anterior open bite malocclusion that develops during the mixed dentition is most commonly associated with which parafunctional habit?
Digit sucking and tongue thrusting exert persistent forces on the dentition that tip the upper incisors labially, depress lower incisors, and prevent anterior vertical overlap, resulting in an open bite.
2. What is the role of salivary glands in the oral cavity?
Salivary glands produce saliva, which plays several critical roles in the oral cavity. Saliva contains enzymes like amylase that begin the chemical breakdown of carbohydrates, initiating digestion. It also lubricates food, making it easier to chew and swallow, and helps maintain oral hygiene by washing away food particles and neutralizing acids.
3. Which orthodontic wire alloy exhibits the highest springback (range of action) and is most commonly used during the initial alignment phase of fixed appliance therapy?
Nickel-titanium (NiTi) wires have the highest springback due to their superelastic or thermoelastic properties, delivering light, continuous forces ideal for initial leveling and alignment.
4. How can a dentist maintain professionalism in patient care?
Professionalism in dentistry is built on trust and respect, which are fundamental to ethical patient care. Dentists maintain this by consistently demonstrating honesty in their diagnoses and treatment plans, showing respect for patient autonomy and concerns, and strictly adhering to ethical guidelines. These principles ensure patient safety, foster a positive doctor-patient relationship, and uphold the integrity of the profession.
5. What is the recommended fluoride varnish application schedule for high-caries-risk children under 6 years of age according to ADA guidelines?
The ADA recommends fluoride varnish application every 3 to 6 months for children at elevated caries risk to maximize preventive benefit.
6. What is the role of the temporomandibular joint (TMJ)?
The temporomandibular joint (TMJ) is a complex joint connecting the jawbone (mandible) to the skull. It acts like a sliding hinge, allowing for a wide range of jaw movements, including opening and closing the mouth, side-to-side motion, and forward/backward movement. These movements are essential for vital functions such as chewing, speaking, and swallowing.