The deep bite is one of the most difficult malocclusions to correct.
The aligners stimulate the contact between both dental arches and this causes the relative intrusion of posterior sectors, counterproductive in the treatment of those cases in which the intrusion of anterior sectors and extrusion of the posterior ones is precisely necessary.
Predictable deep bite problems are those that start from straight or retroclined incisors, since the correction will be through proclination and consequent relative intrusion.
Treatment options in a deep bite are, on the one hand,
A- the intrusion of the previous sector, which can be absolute or relative
B- the extrusion of the posterior sector.
C- In many cases, the correction occurs through a combination of both.
Relative intrusion is more predictable than absolute, while posterior extrusion is a movement with low predictability since, as we have mentioned previously, the aligner itself limits extrusion of posterior sectors.