![Figure 4.](/ServeContent?url=http%3A%2F%2Fdbm.sagepub.com%2Fcontent%2F5%2F1758736014552149%2FF4.medium.gif)
Figure 4.
Force system of a butterfly arch when a mesially directed force (F) applies on the left side of the picture dealing with resistance forces (R) of posterior teeth and bracing element (red segment).
(Downloading may take up to 30 seconds. If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.
Force system of a butterfly arch when a mesially directed force (F) applies on the left side of the picture dealing with resistance forces (R) of posterior teeth and bracing element (red segment).