PERIODONTAL IMPLICATIONS When we are resolving crowding we have to take into account the patient’s periodontal condition. A short list of things to consider are as follows: Tissue type —…

Let’s examine each of these separately: Incisal display — intrusion of the upper anterior teeth would be in- dicated in deep-bite cases with super-eruption of the upper incisors, but would…

Tipping is an “Invisalign free ride”. Since orthodontic forces are ap- plied to the crowns of teeth — a distance away from the center of rota- tion — teeth orthodontically…

The aligner shape is activated, which means it changes at each stage to maintain the force system at the appropriate levels — and they work quite well. This is the…

INVISALIGN FUNDAMENTAL PRINCIPLES So let’s start with the actual principles and then slowly describe and define what I mean by them. The basic fundamental principles of using Invisalign are as…

To explain: Round Trip to Stage — round tripping, temporary proclination of the upper or lower incisors is a useful technique to improve access for IPR. In many cases, it…