Orthodontics and Pediatric Dentistry
Growth and development
Orthodontic and pediatric questions test growth and development, eruption timing, space management, and the distinction between interceptive and definitive treatment. Know the concepts of leeway space, primate spaces, and the mixed dentition analysis. Understand when early intervention is indicated, such as crossbite correction or habit cessation, versus when observation is appropriate. Pediatric dentistry requires knowledge of behavior management, caries risk in primary teeth, and the rationale for stainless steel crowns and pulpotomy versus pulpectomy.
Traps in question stems
Common traps include overtreating a self-correcting condition or delaying treatment that should be interceptive. Questions may test the difference between a primary tooth that should be retained as a space maintainer and one that should be extracted. Another trap is assuming all crowding requires extraction; many cases resolve with growth and space maintenance. Watch for questions about fluoride, sealants, and caries risk in children.
Rule of thumb
Use the "observe unless function or growth is threatened" rule. Intervene early for crossbites, habits causing malocclusion, and space loss; otherwise monitor eruption and growth.
Worked example
A 7-year-old with a single anterior crossbite. The examinable answer is early interceptive correction because anterior crossbite can affect growth and function, unlike mild crowding that may resolve.