How many teeth can you have on a bridge?

How many teeth can you have on a bridge?

If you’ve lost one or more teeth, one of the options you can discuss with your dentist is a dental bridge. These have been used to fill gaps and restore chewing function for many years. A common question we get asked is how many teeth can you have on a bridge?

The answer varies. Some bridges will replace one tooth, some can replace a few. This depends on the size of the gap, the type of bridge and the general health of the mouth (teeth, gums and bone).

What is a dental bridge?

A dental bridge is a fixed restoration used to replace a missing tooth or teeth. The replacement is called a ‘pontic.’ It’s attached to your teeth either side and bridges the gap. Some bridges attach to implants.

Types of bridges you might come across include:

• Traditional.
  These are the most common. They’re supported by crowns that are put on top of your teeth at either side of the gap.
• Cantilever.
  This means the support for the bridge is only at one side of the gap.
• Maryland.
  Maryland bridges are supported by ‘wings’ that are bonded to the backs of your neighbouring teeth.
• Implant-supported.
  For larger gaps or when your teeth aren’t suitable to provide support, your dentist might suggest a bridge that’s supported by dental implants instead.

How many teeth can a bridge replace?

A bridge can replace anything from one tooth to several missing teeth in a row. These are often the most common and the most straightforward applications.

Larger bridges are possible if you have several adjacent missing teeth but there isn’t a simple maximum number that applies. A bridge will only be as strong as its support system. It relies upon healthy teeth and gums. The larger the bridge, the more important this is.

If you’re replacing two missing teeth, for example, and the surrounding teeth are healthy, it’ll often be a relatively simple procedure. If you need four or five replacements, the approach will probably have to be different. You may need additional support from dental implants, for instance.

Your dentist won’t focus on how many teeth are missing, they’ll assess whether a bridge can be supported well and whether it will last.

What factors affect the number of teeth on a bridge?

The strength of the supporting teeth is one of the biggest considerations. These teeth need to be strong enough to cope with extra forces they’ll have if they support an implant. There’ll be more pressure on them when you bite and chew.

Another factor in the equation is where the missing teeth are. If they’re towards the back, these have much greater chewing forces put upon them compared to your front teeth. This can mean design alterations for the bridge.

Your gum and jawbone health is important as well. If you have gum disease, bone loss or if the planned supporting teeth have movement, it will affect how much support there is.

A thorough examination is crucial. Your dentist won’t design and plan a bridge before assessing the overall condition of your mouth.

Can a bridge replace all missing teeth?

Generally speaking, no. These are often used to fill smaller gaps and aren’t suitable for replacing a complete set of upper or lower teeth. This is because a bridge needs support. If existing teeth aren’t there to provide that support, there are no natural anchor points. In these instances, other treatments are usually more suitable.

Anyone who has lost most or all of their teeth might be better suited to implant-supported dentures or full-arch implant systems. These can restore all of your missing teeth and give you the stability needed to eat and speak properly.

Are longer dental bridges reliable?

A longer bridge isn’t necessarily a problem. Some people can successfully have a larger bridge for years. The problem is that the longer a bridge is, the more pressure is placed on existing teeth or the implants.

Every bite of a meal transfers forces into the supporting structures through the bridge. Dentists are cautious about replacing large numbers of teeth in this way because of the additional pressure. A bridge works best on a small scale and isn’t the best option for larger spaces. Too large and there’s a risk of strain or complications over time.

Your dentist will always assess this before recommending anything. They will look at whether a bridge is likely to remain stable over the long term.

Which teeth are best suited for supporting a bridge?

Given what we’ve said about the pressure on supporting teeth, you’re going to need these to be healthy, stable and surrounded by strong bone and gums. A supporting tooth’s root must be able to cope with the additional forces the bridge will create.

A tooth that has a large filling, a crown or signs of wear and tear might still be suitable, though. The important thing is that they’re healthy enough to provide reliable support. If natural teeth aren’t suitable, dental implants are sometimes an option. These can be used to support a bridge directly. They’re often recommended for larger restorations.

What are the alternatives to a dental bridge?

There are other ways to fill gaps and replace missing teeth. The closest replacement to a natural tooth is a dental implant. These are placed directly into the jawbone and support a crown, bridge or denture without relying on supporting teeth.

Another option available are removable dentures. Modern ones can look natural and are useful when other treatments aren’t suitable.

Each option has its advantages and disadvantages. Some patients want something that feels more permanent and so the fixed feel of a bridge or implants is preferred. The best option is a personal one because it depends on oral health, budget and preference.

How long do dental bridges last?

Many bridges last between 10 and 15 years with good care. Some remain successful even longer than that. They’re not a temporary fix. How long yours lasts depends mostly on the health of the teeth and gums supporting it.

Regular dental check-ups help your dentist to check for problems and notice them earlier. Good oral hygiene means decay or gum disease won’t get in the way and shorten the lifespan of your bridge.

A bridge is a long-term solution that can provide many years of comfortable function.

How do you care for a dental bridge?

Your bridge only requires a little more TLC than your natural teeth need. Brushing twice a day and going to your routine dental appointments are essential. Your dentist will usually give you additional advice on how best to clean and look after your bridge. They may recommend tools like interdental brushes or specialised floss that can clean underneath the bridge where your normal toothbrush can’t.

Keeping your gums healthy is really important too. Your bridge’s long-term success is heavily dependent on the teeth and tissues supporting it.

You should also avoid doing things that will put unnecessary stress on your bridge. Chewing hard food like ice, biting hard objects, or using your teeth to open packets are a few things worth avoiding.

When should you speak to a dentist about missing teeth?

Even if the gap isn’t causing any immediate problems, it’s always worth seeking advice if you have a missing tooth. This is because your neighbouring teeth can gradually drift into the space. This may affect your bite and make it more difficult to clean. It can also increase the risk of future dental problems such a bone loss in the jaw.

If you’re struggling with chewing, you’ve noticed nearby movement or even if you just feel unhappy with how the gap looks, you should arrange an appointment. The sooner gaps are addressed, the wider the choice of treatments will be available.

Final thoughts

Dental bridges can help replace a single missing tooth or several. Smaller bridges are the most common, but larger restorations might be possible when there is enough support from healthy teeth or dental implants.

Rather than focusing on asking how many teeth can you have on a bridge, consider all of the options available. Your dentist will complete a thorough assessment to determine whether this is the right option and, if it is, how it can be designed so you get the best long-term result. You can book a free consultation today, either online or in our clinic.

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