When a tooth becomes damaged, heavily filled, cracked or missing, simply placing another filling may no longer provide enough strength. In these situations, fixed dental restorations offer a predictable and long-lasting way to restore both function and appearance.
Unlike removable dentures, fixed restorations are permanently attached to your teeth or dental implants. They feel natural, allow you to chew comfortably, and can last for many years when properly maintained.
At Marina Bay Prosthodontics, every restoration is individually designed to restore your smile while protecting your remaining natural tooth structure.
What Are Fixed Dental Restorations?
Fixed dental restorations are custom-made prostheses that are permanently bonded or attached to teeth or dental implants. They are designed to restore damaged teeth, replace missing teeth, and improve the appearance of your smile.
Common types of fixed restorations include:
- Dental onlays
- Dental crowns
- Dental bridges
- Implant-supported crowns
- Implant-supported bridges
The most appropriate treatment depends on the amount of remaining tooth structure, the health of the surrounding teeth and gums, your bite, and your long-term treatment goals.
Dental Onlays – Preserving More of Your Natural Tooth
A dental onlay is often considered the most conservative type of indirect restoration.
Instead of covering the entire tooth like a crown, an onlay restores only the damaged portions while preserving as much healthy tooth structure as possible.
Onlays are commonly recommended when:
- Large fillings have started to fail
- A cusp has fractured
- The tooth has extensive decay
- A cracked tooth requires reinforcement
- A conventional filling would not provide sufficient strength
Modern porcelain onlays are highly aesthetic and can closely match the colour and translucency of natural teeth.
By preserving healthy enamel, onlays often provide an excellent balance between durability and minimally invasive treatment.
Dental Crowns – Protecting Weak or Damaged Teeth
When a tooth has lost a significant amount of structure, a dental crown may provide the best long-term protection.
A crown completely covers the visible portion of the tooth, restoring its strength, shape, appearance and function.
Crowns are commonly recommended for:
- Teeth with very large fillings
- Cracked teeth
- Root canal-treated teeth
- Severely worn teeth
- Broken teeth
- Teeth weakened by extensive decay
Because the entire tooth is protected, crowns significantly reduce the risk of catastrophic fracture during chewing.
Today’s all-ceramic crowns closely resemble natural teeth and provide excellent aesthetics without the dark metal margins associated with older restorations.
Dental Bridges – Replacing Missing Teeth
A dental bridge is a fixed restoration used to replace one or more missing teeth. It restores your smile, improves chewing ability, maintains speech, and prevents neighbouring teeth from drifting into the empty space.
There are several types of dental bridges, each with its own advantages and ideal clinical applications.
Conventional Dental Bridges
A conventional bridge is the most common type of bridge. It consists of one or more artificial teeth (pontics) that are supported by dental crowns placed over the adjacent natural teeth.
Conventional bridges are often recommended when:
- One or two teeth are missing
- The adjacent teeth already have large fillings or crowns
- The supporting teeth require additional protection
- Dental implants are not suitable due to medical, anatomical or financial considerations
Modern all-ceramic bridges provide excellent aesthetics and restore normal chewing function. However, because the neighbouring teeth must be prepared for crowns, some healthy tooth structure is inevitably removed.
Adhesive Bridges (Maryland Bridges)
An adhesive bridge, also known as a Maryland bridge or resin-bonded bridge, offers a more conservative method of replacing a missing tooth.
Instead of full crowns, the replacement tooth is attached using thin metal or ceramic wings that are bonded to the back surfaces of the adjacent teeth. In many cases, little or no drilling of the neighbouring teeth is required.
Adhesive bridges are particularly suitable for:
- Replacing a single front tooth
- Younger patients who are still growing
- Patients wishing to preserve healthy tooth structure
- Temporary replacement while planning future implant treatment
Because adhesive bridges rely on bonding rather than full crowns, careful case selection is essential. They perform best where biting forces are relatively low and where sufficient enamel is available for durable adhesion.
For appropriately selected patients, adhesive bridges provide an aesthetic, minimally invasive solution that preserves healthy teeth.
Which Restoration Is Best?
Choosing the right restoration depends on several factors, including:
- The amount of remaining healthy tooth
- The size and location of existing fillings
- Whether cracks are present
- Bite forces
- Gum health
- Bone support
- Your aesthetic expectations
Our philosophy is simple: preserve as much natural tooth structure as possible while providing a restoration that offers predictable long-term success.
Whenever appropriate, an onlay may be preferred over a crown because it removes less healthy tooth tissue.
If the tooth has become too weak, a crown may provide better long-term protection.
If a tooth has already been lost, a dental implant is often the most conservative replacement because it avoids preparing neighbouring teeth.
Digital Dentistry for Greater Precision
At Marina Bay Prosthodontics, every restoration begins with a comprehensive diagnosis.
Using advanced digital intraoral scanners, we create highly accurate three-dimensional images of your teeth without traditional impression materials.
Digital technology allows us to:
- Evaluate your bite with greater precision
- Design restorations that fit accurately
- Improve comfort during treatment
- Produce natural-looking ceramic restorations
- Achieve predictable long-term outcomes
Each restoration is individually designed to blend seamlessly with your natural smile.
How Long Do Fixed Dental Restorations Last?
The lifespan of a restoration depends on many factors, including oral hygiene, diet, bite forces and regular professional maintenance.
With appropriate care:
- Porcelain onlays commonly last 10–15 years or longer.
- Ceramic crowns often function successfully for 15 years or more.
- Dental bridges can provide many years of reliable service when the supporting teeth remain healthy.
Regular dental examinations allow problems to be detected early, helping extend the life of your restorations.
Why Specialist Treatment Matters
As specialist prosthodontists, we focus on restoring both function and aesthetics while preserving your natural teeth whenever possible.
Whether you require a single onlay, a full-coverage crown or a complex bridge, our goal is to provide restorations that look natural, feel comfortable and stand the test of time.
If you have a damaged, cracked or missing tooth, we invite you to schedule a consultation to discuss the treatment options best suited to your individual needs.