However, there were still problems with dental implants even as the technology and procedures improved. A lot of patients lack deep bone tissue in the area where implants needed to be fixed, and therefore had to undergo extensive and expensive bone grafting surgery before the implant could be set.
The other problem was that a large number of implants had to be placed in order to hold a full arch of teeth, which proved costly and invasive for the patient. Even recently this number has always been at least 6 implants, and usually it takes months for the implants to heal in order for a bridge to be fitted.
The Teeth In One Day dental implants were an idea that came about through the ingenuity of prosthodontist Dr Paulo Malo in studies by company Nobel Biocare in the 1990s, which made it possible for a full arch of teeth (top or bottom) to be fixed with just four implants, and for patients to walk away in a day with a new set of teeth.