Grafting for Implant supported complete overdenture?

For most of the cases that I see where a maxillary complete overdenture has been planned, there is insufficient bone height and volume in the anterior region, especially around the canine and lateral incisor area, and usually involves bone augmentation. In the posterior, a sinus lift and graft is often required. One of the problems that is difficult to overcome is that during the healing phase of anterior bone augmentation, the patient may not be able to wear a complete denture without endangering the healing of the anterior graft. The healing phase may last several months. I have heard one approach of placing the posterior implants first and using those to stabilize an overdenture with no anterior flange. Any feedback on this issue? How do you approach this problem? Any way for the patient to wear a complete denture or overdenture while the anterior graft is healing? Any training courses available that teach how to manage cases like this?