Orthodontics and Pediatric Dentistry
What the exam expects
This domain combines growth and development, occlusal development, malocclusion classification, appliance principles, and pediatric behavior management, caries prevention, and pulp therapy in primary teeth.
Core concepts to master
- Growth and development: cephalometric landmarks, growth spurts, dental age vs chronologic age, and the role of the leeway space and primate space.
- Malocclusion: Angle classification, skeletal vs dental relationships, crossbite, and open bite.
- Appliance principles: removable and fixed appliances, functional appliances, force levels, anchorage, and retention.
- Pediatric caries and prevention: early childhood caries, fluoride varnish, sealants, and diet counseling.
- Primary tooth pulp therapy: indirect and direct pulp capping, pulpotomy, pulpectomy, and the rationale for preserving primary teeth.
Traps
- Confusing Angle Class II division 1 (proclined incisors) with division 2 (retroclined incisors with deep bite).
- Assuming primary teeth need less care because they exfoliate; early loss causes space loss and impaction risk.
- Using adult fluoride or force levels for children without adjusting.
- Calling any anterior crossbite a skeletal problem; many are dental and correctable early.
Rule of thumb
For pediatric items, use preserve the primary tooth whenever possible and intervene early for crossbite. Worked example: a 4-year-old with a carious primary molar and a healthy pulp chamber but reversible inflammation - the answer is pulpotomy or restoration to maintain the tooth, not extraction, because space maintenance matters.