Class II Malocclusion in Mixed Dentition: Spontaneous Resolution?

A Class II malocclusion (where the upper teeth significantly overlap the lower teeth) diagnosed during the mixed dentition phase (ages 6–12, when both baby and permanent teeth are present) does not typically resolve spontaneously.

While minor dental compensations may occur as permanent teeth erupt, the underlying skeletal discrepancy (often a retrusive mandible or protrusive maxilla) generally persists or worsens with growth. Early evaluation by an orthodontist is crucial.

Why Early Assessment Matters

• Growth Modification: Functional appliances (e.g., Herbst, Twin Block) are most effective during peak growth spurts (typically ages 10–13).
• Preventing Complications: Untreated Class II malocclusions increase risk of trauma to protrusive upper incisors, speech issues, and TMJ strain.
• Timing: "Wait and see" often misses the window for non-surgical correction, potentially leading to orthognathic surgery in adulthood.

The American Association of Orthodontists recommends a first check-up by age 7. If a Class II pattern is detected, the orthodontist will monitor growth and intervene at the optimal time.