Which malocclusion has the most frequent relapse after treatment?

Which malocclusion has the most frequent relapse after treatment?

• A. Malocclusion II/1 by Angle
• B. Malocclusion II/2 by Angle
• C. Malocclusion III by Angle(false)
• D. Malocclusion III by Angle(functional)

Answer: (B)

Relapse after treatment tends to be driven by unstable incisor positioning and vertical control, so patterns that require significant changes in incisor inclination combined with a deep bite are particularly prone to relapse. In Class II Division 2, the hallmark is retroclined upper front teeth with a deep bite. Correcting this often demands substantial re-torquing of the incisors and vertical adjustments, but once the braces come off, natural forces from the tongue, bite, and facial muscles, along with ongoing growth, tend to push the incisors back toward their original retroclined position and the bite back to a deeper vertical relationship. This makes relapse more common for this pattern than for others, where the corrections are less dependent on large incisor torque changes or vertical alterations.

Relapse after treatment tends to be driven by unstable incisor positioning and vertical control, so patterns that require significant changes in incisor inclination combined with a deep bite are particularly prone to relapse. In Class II Division 2, the hallmark is retroclined upper front teeth with a deep bite. Correcting this often demands substantial re-torquing of the incisors and vertical adjustments, but once the braces come off, natural forces from the tongue, bite, and facial muscles, along with ongoing growth, tend to push the incisors back toward their original retroclined position and the bite back to a deeper vertical relationship. This makes relapse more common for this pattern than for others, where the corrections are less dependent on large incisor torque changes or vertical alterations.