However, this may be said of external pressure only when it is applied to an arch that is dentitionally complete.

2009 December 1st, Wada, Keiichi; Tsukamoto, Yusuke; Kokubo, Eiichiro, “Planet Formation around Supermassive Black Holes in the Active Galactic Nuclei”, in The Astrophysical Journal, volume 886, number 2, article 107:

Just say no to drugs.

When the long, hot journey drew to its end and the train slowed down for the last time, there was a stir in Jessamy’s carriage. People began to shake crumbs from their laps and tidy themselves up a little.