Orthodontics and Pediatric Dentistry
Orthodontics and pediatric dentistry tests growth, eruption, space management, interceptive treatment, behavior guidance, and prevention. The exam connects timing to the developing dentition.
Core rules
- Mixed dentition assessment includes eruption sequence, arch length, leeway space, and habits. Premature loss of a primary molar can cause space loss and impaction.
- Space maintenance is considered when space loss is likely; a band-and-loop or distal shoe depends on whether the permanent successor has erupted.
- Interceptive orthodontics addresses crossbites, crowding, digit habits, and skeletal discrepancies at the appropriate growth stage; not every malocclusion needs early treatment.
- Pediatric behavior guidance uses tell-show-do, positive reinforcement, and parental involvement; protective stabilization is a last resort with documentation.
- Caries risk assessment drives prevention: fluoride varnish, sealants, diet counseling, and recall.
- Dental trauma: avulsed permanent tooth is replanted immediately if possible, handled by the crown, and splinted; primary teeth are generally not replanted.
Worked example
An 8-year-old loses a primary mandibular second molar before the first permanent molar has erupted. A space maintainer is indicated to prevent mesial drift and loss of arch length; the type depends on eruption status, and the patient needs caries control and recall.
Traps
- Extracting primary teeth without a space plan.
- Treating every Class II as an early orthodontic emergency.
- Replanting a primary avulsed tooth.
- Using behavior guidance without explaining or documenting.