How are you tucking? I'm a little confused how it might damage anything... is it the Mackenzie tuck?
Yes. Basically I drive the mandible towards the neck. This forces the teeth together hard. Grinding teeth is damaging to the enamel, so I'm wondering how damaging static pressure is (if at all).
In my opinion this is the only way to really get sufficient force to the maxilla. The more you practice this the stronger your tongue and the muscles at the front of your neck will get to offset added pressure to the teeth.
A few months ago I had the epiphany that when I'm tucking my chin back this is actually closer to the orientation my head is supposed to be in. When I tuck my chin, it straightens out my whole neck and spine and causes my tongue to jam into my palate due to lack of space. I realized the reason I always used to slouch was because the center of gravity of my head was too far in front of my spine due to forward head posture. Thereason my jaw tucks into my throat so much when I do this posture is because of how far down my maxilla is dropped and how much my mandible rotated back. If angelina jolie or natalie portman did a chin tuck, their jaws would still stick straight out at a 90 degree angle. So far I've noticed significant closure of my open bite, also I used to barely be able to breathe while tucking my chin in but now I can which tells me there was some adaptation.
I find it useful to occasionally put my hand on the back of my head and gently pull upward, while holding an inhalation plaster your tongue on the palate and push while engaging the front of the neck. Then when you release the breath it feels very relaxing and good.
Exactly. The great thing is that once the head is in an anatomically correct position, the rest of the body seems to magically sort itself out too. Suddenly your lordosis has gone away and your shoulders aren't rolled forward any more. Trying to fix either of these without fixing head posture is incredibly hard. I remember having to stretch psoas and hamstrings daily just to be able to keep the hip area straight and open before becoming aware of head posture.
Anyways, I think the mechanics involved in this kind of "facepulling" are pretty close to what Mew is talking about here
https://youtu.be/-pzL3ETuiKc?t=807. Correct me if I'm wrong, but at least for me far greater forces seem to be generated against the anterior teeth than posterior teeth, which may over time tip the anterior maxilla upwards and allow the mandible swing up & forward with it (as shown in Mew's powerpoint slide). Looking at the force vectors, the facepulling gear he shows at 14:40 seems to be made to simulate this exact effect of correct head posture.
If only I could sleep on my back without getting apnea... having the mandible driving against the maxilla for whole night could be able to really catapult structural changes.