Full-arch implants: fixed teeth on implants versus a removable denture

How a fixed arch on four to six implants works

The implants are spread across chosen positions in the jaw, and one restoration carrying all the teeth is fixed on top of them. The patient does not take it out, it does not move while eating or speaking, and it is cleaned in the mouth like teeth, with a few extra tools.

The number differs from jaw to jaw. The lower jaw usually has denser bone, so fewer implants may be enough; the upper jaw has softer bone and may need more. The dentist sets the number on the scan, not the trade name of the method.

Why one implant per missing tooth is not needed

The teeth in the restoration are joined in one body, so chewing forces are shared across all the implants together. A few well-spread implants, angled at planned inclinations, carry a full arch better than many crowded ones. That is what makes the solution possible for someone who has lost bone in parts of the jaw.

The difference in eating, speaking and confidence

• Eating: a fixed arch allows the foods that denture wearers avoid, such as apples and meat.
• Speaking: nothing moves and the tongue does not have to hold anything in place, so speech returns to normal after a short adjustment.
• Taste: a fixed upper arch does not cover the palate, unlike a removable denture, so taste stays complete.
• Confidence: no fear of the denture shifting when laughing or coughing.
• Bone: implants pass chewing forces into the bone and slow its shrinkage, which a removable denture does not do.

Who is better served by a removable denture

• Someone whose general health does not allow surgery for now, or who prefers to avoid it.
• Someone who needs a temporary solution during a transition before implants.
• Someone whose bone is so reduced that it would need extensive building they do not want.
• Someone who, knowing the difference, chooses the simpler path in care and cost.

There is also a middle option: a removable denture that clips onto two or more implants, so it still comes out but does not move in use.

How the CBCT scan spreads the implants and can avoid bone grafting

The 3D scan shows where good bone remains and where it has receded, and where the nerve and the sinus lie. On that basis the implants are placed in the available bone and tilted at planned angles to avoid the sinus in the upper jaw and the nerve in the lower. In many cases this removes the need for a sinus lift or bone graft; in others, building remains necessary.

The implants are planned on screen together with the final shape of the teeth, and a surgical guide is made to steer them to their positions.

The stages of treatment

It starts with the examination, the scan and the digital impression, then the written plan. In the surgical session the implants are placed, and a fixed temporary set may be fitted the same day if their stability allows, or a temporary denture is used until fusion. After fusion the final restoration is made. The dentist sets the intervals for each case according to bone and fusion, and states them in the plan.