How to Choose Between One Implant or Two for Adjacent Missing Teeth

Introduction

When you are missing two or more teeth next to each other, a common question arises: do you need one implant per tooth, or can a single implant support multiple replacement teeth?

The answer depends on several factors, including the location of the missing teeth, the condition of your jawbone, and your long-term goals. In this guide, we explain both approaches so you can make an informed decision.

For two adjacent missing teeth, there are two main treatment approaches:

• Two individual implants, each supporting its own crown
• An implant-supported bridge, using one or two implants to support two or three connected crowns

The right choice depends on your clinical situation, which your dentist will assess during your consultation.

Option 1: Two Individual Implants

How It Works

Each missing tooth is replaced with its own implant and crown. This is the closest to replicating natural teeth.

Advantages

• Independent support for each tooth — if one implant has an issue, the other is unaffected
• Better preservation of bone in both tooth sites
• Easier to clean and maintain — you can floss between them like natural teeth
• Each crown can be replaced independently if needed in the future

Considerations

• Requires sufficient bone width and density at both sites
• Slightly higher initial cost
• Not always possible if teeth are very close together — minimum spacing between implants is typically 3mm

Option 2: Implant-Supported Bridge

How It Works

One or two implants are placed, and a connected bridge of two to three crowns spans across the gap. The bridge is permanently fixed to the implants.

Advantages

• Fewer implants needed, potentially reducing surgical complexity
• Can be more cost-effective than individual implants
• Useful when bone is insufficient at one of the two sites
• Good option when implant spacing would be too tight for two individual posts

Considerations

• If one component fails, the entire bridge may need to be remade
• Bone beneath the pontic (the false tooth in the bridge that has no implant beneath it) will continue to resorb
• Requires threaded floss or a water flosser for cleaning under the bridge

Factors Your Dentist Will Consider

Location in the Mouth

Front teeth in the aesthetic zone often benefit from individual implants for the most natural appearance. Back teeth may be suitable for either approach.

Bone Availability

If bone has been lost at one site but is healthy at the adjacent site, a bridge anchored to one implant can be an effective solution, avoiding the need for bone grafting at the compromised site.

Spacing Between Roots

Dental implants need a minimum amount of space between them (at least 3mm) and from neighbouring natural teeth (at least 1.5mm). If spacing is tight, a bridge may be the safer option.

Cost and Budget

Two individual implants will generally cost more than an implant-supported bridge. Both options are available through our flexible payment plans.

What About Three or More Adjacent Missing Teeth?

For three or more consecutive missing teeth, an implant-supported bridge is usually the most practical approach. Typically, two implants can support three connected crowns, reducing the number of implants needed while maintaining excellent stability.

For larger spans, four or more implants may be used as part of a full-arch solution.

Frequently Asked Questions

Is it better to get two implants or one bridge?

If bone and spacing allow, two individual implants provide the most natural result and best long-term outcomes. However, a bridge can be equally successful and may be clinically preferable in certain situations.

Can one implant support two teeth?

Yes. A single implant can support a two-unit cantilever or a small bridge. However, this places more force on the single implant, so it is typically only recommended in specific clinical situations.

How do I clean between two adjacent implants?

Individual implant crowns can be cleaned with regular interdental brushes and floss, just like natural teeth. Bridges require a floss threader or water flosser to clean beneath the pontic.

What is the cost difference between one and two implants?

The cost varies based on your specific case. Two individual implants will generally be more expensive than a bridge, but both options provide excellent long-term value. Contact us for a personalised treatment plan and quote.

If you have adjacent missing teeth and want to know the best approach for your situation, book a free consultation with our implant team in London.