Understanding Root Canal Procedures

What You Need To Know Before Getting Subperiosteal Implants

7 June 2022

Diane Mason

Most patients who are given dental implants receive the type known as endosteal implants. These implants are basically like screws that extend down into the jaw bone. There is, however, another type of dental implant known as subperiosteal dental implants. As these are not as common, patients don't always know as much about them or how they work. Here are the basics you should know if a dentist is recommending subperiosteal implants for you.

The dental implants sit on top of your actual bone. 

These implants do not extend into the jaw bone. Instead, your dental surgeon will place them between the periosteum and your jaw bone. (The periosteum is the lining or outer covering of your jaw bone.) As such, these implants look more like plates than screws. They sort of lap over the bone like a curved cover. 

The implants take a while to become sturdy in your mouth.

When they are first placed, subperiosteal implants are not very stable, and they can easily become misplaced. However, the bone does start to form calcified tissue around the implant in the days and weeks following surgery. Within a few months, the implant will be more secure. Subperiosteal implants are not quite as secure as endosteal implants, but once you're healed, the difference is not too substantial.

These implants are still surgically placed.

Even though subperiosteal implants are not inserted into the actual bone tissue, they do still need to be inserted into the mouth surgically. Your dentist will use a local anesthetic to make sure you don't feel anything during the procedure. They may also give you some nitrous oxide as a mild sedative so you stay calm. They'll then use a scalpel to open up your gums. Then, after opening your periosteum, they'll place the implant over your jaw bone. They'll then put the periosteum back into place over the implant before suturing the gum tissue back over the jaw bone.

These implants are often recommended for people with small or weak jaw bones.

If you wonder why your dentist is recommending this type of implant over the more common endosteal implants, it is likely because of the condition of your jaw bone. Jawbones that are smaller or weaker can't always support endosteal implants, but subperiosteal implants can still work well. 

Subperiosteal implants are a good choice for many patients. If you have any other questions about them, don't hesitate to ask your dentist or dental surgeon.

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