Angled for bone that is there
Tilting the posterior implants often avoids the graft that a straight placement would have required.
All-on-4 implants
A full arch of teeth supported by four precisely angled implants, fixed in place rather than removed at night. It suits a specific anatomy, and the scan decides whether yours is one of them.
The rear implants are angled to engage denser bone and to spread load along the arch. Where the anatomy allows it, that geometry carries a full arch without grafting the back of the jaw.
Tilting the posterior implants often avoids the graft that a straight placement would have required.
The arch is secured to the implants. It is not taken out, and it does not move while you eat or speak.
Bone volume decides candidacy. The CBCT is taken before anything is promised.
Said plainly
It is the right treatment for some arches and the wrong one for others. Where teeth can be kept, keeping them is usually better than replacing a whole arch. The evaluation exists to tell those situations apart.
Questions
Some cases receive a provisional arch quickly. The definitive restoration follows healing. Which applies to you depends on bone quality at placement.
Often not. Angling the posterior implants is frequently what avoids it, which is the point of the technique.
Then say so at the evaluation. Removing sound teeth to simplify a treatment plan is not a trade this practice makes.
No obligation
The preliminary consultation is free and includes a 2‑D panoramic scan. If the plan you were given was the right one, you will be told so.