If you have lost a tooth, you may be wondering, how do dental bridges work? A dental bridge fills the empty space with an artificial tooth that is held in place by nearby natural teeth or dental implants. Because the restoration is fixed, you do not remove it each day. It can restore a chewing surface, improve the appearance of your smile, and help maintain the position of surrounding teeth.
At Estrella Mountain Dentistry in Goodyear, AZ, a dentist can examine the missing-tooth area, surrounding teeth, gums, bite, and supporting bone before recommending a replacement. The right bridge design depends on where the gap is located, how many teeth are missing, and what structures are available to support the restoration.
In simple terms, the replacement tooth cannot support itself because it does not have a natural root. A bridge solves this problem by transferring support to strong teeth or implants around the gap.
What Is a Dental Bridge?
A dental bridge is a fixed restoration used to replace one or more missing teeth. The artificial tooth that fills the space is called a pontic. The teeth or implants that hold the restoration are called abutments. In a common design, natural teeth on each side of the gap are covered with crowns. The pontic is joined between those crowns so the entire restoration works as one connected structure.
This creates a stable replacement for the visible portion of the missing tooth while allowing chewing forces to pass through the supporting structures. Dentists have long approached bridge design as an engineering problem. Edwin Smyd’s 1948 article, Dental Engineering, in the Journal of Dental Research is an early example. That is one reason a dentist evaluates the strength and position of the supporting teeth before recommending a bridge.
What Actually Holds a Bridge in Place?
The support system depends on the type of restoration. With a tooth-supported bridge, crowns or bonded retainers connect the artificial tooth to nearby natural teeth. Once the restoration is secured, those teeth carry the load that would otherwise have been carried by the missing tooth. With an implant-supported restoration, implants placed in the jaw provide the foundation instead.
The strength of a bridge depends not only on the material used but also on its design, the location of the supporting structures, and the direction of chewing forces. Smyd’s 1952 paper, Dental engineering applied to inlay and fixed bridge fabrication, applied engineering principles to fixed bridges. This is one reason a dentist checks your bite carefully before permanently securing a bridge.
What Types of Bridges Are Available?
Dental bridges come in four main designs. The best option depends on the location of the missing tooth, the condition of nearby teeth, available support, and the amount of biting pressure in that area.
Traditional Dental Bridge
For a traditional dental bridge, healthy natural teeth on both sides of the missing space usually provide the support. Those teeth are reshaped so crowns can fit over them. The artificial tooth is connected between the crowns.
Because support comes from both sides, this design can create a stable restoration when the abutment teeth are healthy and strong enough. The main limitation is that some natural enamel must be removed to make room for the crowns. That change cannot be reversed.
Cantilever Dental Bridge
When support is available on only one side of the gap, a cantilever dental bridge may be considered. Instead of connecting the replacement tooth to two supporting teeth, it extends from one abutment. This changes the way pressure is transferred when you bite, because support is not balanced on both sides. For this reason, this option is not appropriate for every area of the mouth.
Maryland Dental Bridge
A more conservative approach is a Maryland dental bridge, which usually avoids placing full crowns over neighboring teeth. Instead, the pontic has thin retainers or wings that are bonded to the backs of nearby teeth. This allows more natural tooth structure to remain intact. This approach is often considered for selected front-tooth spaces where chewing forces may be lower than in the back of the mouth. Bond failure is one possible problem.
A resin-bonded restoration can loosen even when the artificial tooth itself remains undamaged. A systematic review by Thoma, Sailer, Ioannidis, Zwahlen, Makarov, and Pjetursson examining resin-bonded fixed dental prostheses analyzed 2,300 restorations. The researchers estimated survival at 91.4% after five years and 82.9% after ten years, while loss of retention was the most frequent complication. That does not mean every Maryland bridge will have the same outcome. Design, location, materials, bite, and patient factors all matter.
Implant-Supported Dental Bridge
If several neighboring teeth are missing, an implant-supported dental bridge may use dental implants instead of natural teeth as its main foundation. The implants are surgically placed into the jawbone. After sufficient healing, the bridge is attached to components connected to those implants.
This approach can be considered when several neighboring teeth are missing. It can also avoid preparing healthy natural teeth purely to create bridge support. However, implant placement requires surgery and typically takes longer because healing must occur before the final restoration is completed.
Reasons for Getting a Dental Bridge
Missing teeth can affect more than the appearance of your smile. An open space can change how you chew, how your teeth meet, and how nearby teeth are positioned over time.
Depending on the location of the gap, a dental bridge may help:
- Restore a surface for biting and chewing
- Improve speech affected by the missing tooth
- Fill a visible space in the smile
- Help keep nearby teeth from shifting
- Restore contact between upper and lower teeth
- Provide a fixed alternative to a removable replacement
When a tooth is missing, nearby teeth may gradually lean toward the open space. A tooth in the opposite arch may also move because it no longer has the same contact during biting. These changes do not happen the same way for every person, but replacing the missing tooth can help maintain the space and support a more stable bite.
A tooth-supported bridge does not replace the missing tooth root, so it does not work the same way as a dental implant. The supporting teeth, gums, bone, and bite still need to be evaluated before a bridge is recommended.
What Happens During the Dental Bridge Procedure?
The dental bridge procedure varies according to the design, but a conventional restoration normally involves examination, tooth preparation, impressions or scanning, and final placement.
Examining the Missing-Tooth Area
The dentist first checks the gap and the surrounding structures. X-rays may be taken to examine the roots, bone, nearby teeth, and other areas that cannot be fully evaluated by looking inside the mouth.
The dentist also checks for cavities, gum problems, cracks, large existing restorations, and other conditions that could weaken a potential abutment. Your bite matters too. A strong supporting tooth can still be placed under unfavorable pressure if the restoration is not designed correctly.
Preparing the Supporting Teeth
If a conventional bridge is being used, the teeth beside the gap are reshaped. Enough tooth structure needs to be removed to create room for the crowns that will support the replacement. Local anesthetic is typically used during this stage.
Once a tooth has been prepared for a full crown, that change is permanent. This is an important factor when comparing a bridge with treatment that does not require preparation of neighboring teeth.
Taking an Impression or Digital Scan
After preparation, the dentist records the size, shape, and position of the teeth. This may be done using impression material or a digital scanner. The record helps reproduce the prepared teeth, surrounding teeth, missing space, and bite so that the restoration can be designed to fit properly.
Wearing a Temporary Restoration
If the final restoration is being created by a dental laboratory, a temporary bridge may be placed over the prepared teeth. The temporary helps protect them while the permanent version is being made. Because it is intended for short-term use, you may be advised to avoid especially hard or sticky foods until the permanent restoration is placed.
Placing the Permanent Bridge
At the final appointment, the temporary restoration is removed. The dentist checks the permanent bridge against the prepared teeth, neighboring teeth, gums, and opposing teeth.
The bite is particularly important. If part of the bridge contacts too early when you close your teeth, additional force may be placed on that area. Small adjustments can be made before the restoration is permanently cemented.
How Is an Implant-Supported Bridge Different?
An implant-based restoration needs additional steps. First, the dentist or implant provider evaluates whether enough healthy bone is available to support implants. The implants are then surgically placed into the jaw. Healing is needed before they can support the final restoration.
The amount of healing time varies based on the patient, location, bone condition, implant stability, and treatment plan. After the implants are ready, impressions or scans are taken and the final restoration can be created. This explains why implant-based treatment normally takes longer than a conventional tooth-supported restoration.
Does Getting a Bridge Hurt?
Preparing teeth should not be painful while the area is properly numb. Mild gum tenderness or tooth sensitivity can occur after treatment, especially when natural teeth have recently been prepared.
The temporary or permanent restoration may also feel different at first because your tongue and bite are adjusting to a new shape. Pain that continues, strong discomfort while chewing, swelling, or a bridge that feels unusually high should be checked by a dentist.
How Long Does a Dental Bridge Last?
There is no exact lifespan that applies to every bridge. Material, design, oral hygiene, supporting teeth, gum health, chewing forces, grinding habits, and regular dental care can all affect longevity.
A 2023 Canadian health technology review found the evidence on bridge longevity limited. One meta-analysis it summarized estimated that tooth-supported all-ceramic bridges survive about 94% of the time at three years, 89-91% at five years, and 79-82% at ten years. The review also cites an estimated lifespan of around ten years with good care.
A separate systematic review by Bjarni Elvar Pjetursson and colleagues, covering 40 studies, estimated a five-year survival rate of 94.4% for metal-ceramic multi-unit restorations and found that complications differed by material.
Numbers vary between reviews because they study different materials, designs, and patients, so lifespan is best treated as an individual estimate rather than a guarantee. Your dentist can tell you what to expect based on your supporting teeth, bite, and habits.
What Problems Can Develop?
Even a well-made restoration can develop problems over time. The natural teeth supporting a bridge can still get cavities around crown margins. Plaque buildup may also irritate nearby gums. The restoration itself may chip, loosen, wear, or fracture.
Pjetursson and colleagues also reported differences in complications such as tooth decay, framework fracture, ceramic fracture, and loss of retention across the materials they evaluated. This reinforces an important point: a bridge can survive as a restoration while still developing a problem that needs treatment.
How Should You Clean Around It?
Good dental bridge care protects both the restoration and the structures supporting it. Brush your natural teeth and bridge twice each day using fluoride toothpaste. Cleaning underneath the pontic is also important because normal floss cannot simply pass down between units that are connected. A floss threader, bridge floss, or interdental brush may be used to clean under the artificial tooth and near the supporting teeth.
Your dentist or dental hygienist can show you which method works best for the shape of your restoration. Plaque should not be allowed to remain around the crown margins or beneath the pontic because the supporting teeth and gums remain biologic tissues even though the bridge itself cannot develop a cavity.
Can You Eat Normally?
Most people can return to a normal range of foods after becoming comfortable with the permanent restoration. However, no dental restoration is indestructible. Avoid chewing ice or using your teeth to open packaging.
Very hard foods can create unnecessary stress, while sticky foods may place pulling forces on some restorations. If you grind or clench your teeth, mention it to your dentist. Extra pressure from grinding can affect both natural teeth and dental restorations.
Bridge or Implant for One Missing Tooth?
When comparing a dental bridge vs implant, the biggest difference is where the replacement gets its support.
|
Feature |
Dental Bridge |
Dental Implant |
|
Support |
Nearby teeth or implants |
Implant placed in jawbone |
|
Natural tooth preparation |
Often needed for a traditional design |
Usually not needed |
|
Surgery |
Usually not for a tooth-supported bridge |
Required |
|
Treatment time |
Often shorter |
Usually longer because healing is needed |
|
Missing root |
Does not replace it |
Implant acts as root support |
|
Cleaning |
Requires access beneath connected units |
Often cleaned more like an individual replacement |
A bridge may make sense when nearby teeth already need crowns, when implant surgery is not suitable, or when a patient prefers a non-implant approach. An implant may be considered when healthy neighboring teeth can remain untouched and there is enough suitable bone for implant placement. Neither choice is automatically right for everyone.
Who Can Get a Dental Bridge?
The foundation must be strong enough to support the restoration. For a tooth-supported design, the dentist needs to evaluate the health and structure of the proposed abutment teeth. Gum health and bone support also matter because these tissues hold the supporting teeth in place.
Active decay, significant gum disease, cracks, or badly weakened teeth may need treatment before a bridge is considered. The dentist will also look at the size of the gap, location of the missing tooth, biting pressure, existing dental work, and overall treatment goals.
How Many Teeth Can a Bridge Replace?
A bridge can replace one tooth or several neighboring teeth, but a longer span requires more support. There is not one safe number that applies to every patient. Replacing additional teeth increases the distance between supporting structures and changes the forces placed on them. The dentist therefore needs to determine whether the available teeth or implants can provide enough support rather than choosing a bridge based only on the number of missing teeth.
Can a Permanent Bridge Be Removed?
A permanent restoration is fixed in place and should not be removed at home. A dentist may sometimes need to remove it if the restoration becomes loose, damaged, or if a supporting tooth needs treatment.
Whether the existing bridge can be reused depends on its condition and why it became loose. Do not attempt to permanently recement a loose restoration yourself. A dentist first needs to identify whether the problem involves cement, decay, fracture, or the supporting tooth.
What Does a New Bridge Feel Like?
A newly placed restoration may feel noticeable at first. Your tongue is very sensitive to small changes in tooth shape, so a new surface can feel unfamiliar even when its dimensions are appropriate.
Your bite should become comfortable once you adapt. If one part of the restoration consistently seems to hit before the rest of your teeth, or chewing remains uncomfortable, contact a dentist. The bite may need to be checked.
Restore a Missing Tooth in Goodyear, AZ
A missing tooth can affect how you chew, how your teeth line up, and how comfortable you feel smiling. A dental bridge is one fixed way to fill that space, but the right option depends on the health of your nearby teeth, your gums, your bite, and the bone beneath them.
At Estrella Mountain Dentistry in Goodyear, AZ, we’ll examine the area, explain which replacement options fit your situation, and go over your treatment timeline and costs before you decide on anything. Contact us or book your consultation online to get started.
Conclusion
So, how do dental bridges work? A bridge replaces the visible part of a missing tooth with a pontic and uses neighboring teeth or implants to provide support. Traditional designs commonly use crowns on both sides of the gap, while cantilever, bonded, and implant-supported designs use different methods of anchoring the replacement.
The supporting structures are just as important as the artificial tooth. Their strength, position, gum and bone support, and the forces created during biting all influence how the restoration is planned.
A bridge also requires long-term care. Cleaning around and underneath it, protecting it from unnecessary force, and having the supporting teeth checked regularly can help identify decay, gum problems, loosening, or damage before those problems become more serious.
Frequently Asked Questions
Do dental bridges feel like natural teeth?
A properly fitted bridge can feel similar to your natural teeth after you adjust to it. It may feel unfamiliar for the first several days. Persistent pressure or an uneven bite should be checked by a dentist.
Is getting a dental bridge painful?
Local anesthetic is normally used when supporting teeth are prepared. Some temporary sensitivity or gum soreness may occur afterward. Severe or lasting pain should be evaluated by a dentist.
How many teeth can a bridge replace?
A bridge may replace one or several neighboring missing teeth. The safe span depends on the available support and biting forces. A dentist needs to assess the gap before recommending a design.
Can a dental bridge be removed?
A permanent restoration should not be removed at home. A dentist can remove it when repair or treatment is necessary. Whether it can be reused depends on its condition and the supporting teeth.
How long does it take to get a bridge?
A conventional bridge commonly requires more than one appointment. The prepared teeth must be recorded and the final restoration fitted. Implant-supported treatment usually takes longer because healing is required.
Can you eat normally with a bridge?
Most people can return to a normal diet after adjusting to it. Avoid habits such as chewing ice or biting hard non-food objects. Your dentist may give additional advice based on the restoration material.
What should you do if a bridge becomes loose?
Avoid heavy chewing on that side and contact a dentist. Loose cement, decay, damage, or an abutment problem may be involved. The cause should be identified before the restoration is secured again.
