Before and After
Upper spacing with small teeth

gadson-before-midline
Before
gadson-after-midline
After

Before and After
Anterior crossbite (underbite)

gaskin-midline-before
Before
gaskin-midline-after
After

Before and After
Upper and lower spacing

moore-before-midline
Before
moore-after-midline
After

Before and After
Upper and lower crowding

pearson-midline-before
Before
pearson-midline-after
After