Screw-Retained vs Cemented Implant Implant Crowns

Screw-retained and cemented implant crowns are two ways to restore dental implants. Learn how they differ in design, maintenance, retrievability and aesthetics, and how your dentist can determine which option is most suitable for your individual needs.

Screw-Retained vs Cemented Implant Crowns: Which Is Better?

Choosing the right way to attach an implant crown is an important part of dental implant treatment. Two common options are screw-retained and cemented implant restorations.

Both approaches can provide a strong, functional and natural-looking result. However, they differ in how the crown is attached to the dental implant, how the restoration is maintained, and how easily it can be removed if future treatment is required.

The best option depends on factors such as the position of the implant, available space, appearance, bite, access for the screw, the type of restoration and the individual patient's needs.

What Is a Screw-Retained Implant Crown?

A screw-retained implant crown is attached directly to the dental implant or an implant abutment using a small dental screw.

The crown contains a specially designed access channel that allows the clinician to tighten the screw and secure the restoration. The access opening is then sealed with a suitable restorative material.

One of the main advantages of a screw-retained crown is that the restoration can usually be removed more easily if maintenance, repair or modification is required.

Screw-retained restorations are commonly used for single implant crowns, implant bridges and full-arch implant restorations.

What Is a Cemented Implant Crown?

A cemented implant crown is attached to an abutment that is connected to the dental implant. Dental cement is used to secure the crown to the abutment.

Unlike a screw-retained crown, there is generally no screw access opening through the visible crown. This can provide greater flexibility when implant positioning makes a screw access channel difficult to place in an ideal location.

The crown may also be designed similarly to a conventional tooth crown from an appearance perspective.

Screw-Retained vs Cemented Implant Crowns

The main difference is how the visible crown is secured.

With a screw-retained restoration, the crown is secured using a screw that connects the restoration to the implant or implant abutment.

With a cemented restoration, the implant supports an abutment and the crown is secured to that abutment using dental cement.

Neither method is automatically better for every patient. The decision should be based on the individual implant position, restoration design, functional requirements, aesthetics and long-term maintenance considerations.

Screw-Retained vs Cemented Implant Crowns: Key Differences

Screw-retained vs cemented implant crowns differ mainly in how the crown is attached to the dental implant. Screw-retained crowns are secured with a dental screw and can generally be removed more easily for maintenance or repair, while cemented crowns are attached to an implant abutment using dental cement. The right option depends on factors such as implant position, aesthetics, bite, available space and the need for future access.

Advantages of Screw-Retained Implant Crowns

One of the biggest advantages of screw-retained implant crowns is retrievability.

If the crown needs to be removed for maintenance, repair or evaluation of the implant and surrounding tissues, the restoration can generally be accessed without destroying the crown.

Other potential advantages include:

• Easy access for maintenance and repairs

• No need for cement to secure the crown

• Reduced concern about excess cement remaining around the implant

• Useful when future access to the implant is anticipated

• Suitable for many single crowns, bridges and full-arch implant restorations

• The restoration can often be removed and reinserted when clinically appropriate

However, screw-retained restorations are not suitable for every implant position or every clinical situation.

Advantages of Cemented Implant Crowns

Cemented implant crowns also have several advantages and remain an appropriate option in selected cases.

Potential advantages include:

• No screw access hole through the visible crown

• Greater flexibility when implant angulation makes screw access less favourable

• Good aesthetic possibilities

• Familiar crown-and-abutment design

• Useful when the implant position does not allow an ideal screw-access location

Cemented restorations can provide excellent results when carefully planned and properly maintained.

Screw-Retained vs Cemented: Aesthetic Considerations

Aesthetics can be an important consideration when choosing between screw-retained and cemented implant crowns.

A screw-retained crown requires an access channel through the restoration. If this channel emerges in a visible area, it may affect the appearance of the crown or require careful restorative management.

However, modern digital planning and implant positioning can often help place the screw access channel in a more favourable location.

Cemented crowns do not have a visible screw access opening. This can be advantageous in certain highly aesthetic areas, particularly when implant positioning makes screw access difficult to manage.

The final appearance depends on much more than the retention method. Implant position, gum levels, crown design, ceramic selection, tooth colour, emergence profile and laboratory fabrication all contribute to the result.

Screw-Retained vs Cemented: Maintenance

Long-term maintenance is an important consideration in implant dentistry.

Screw-retained restorations are generally easier to remove when access to the implant or restoration is required. This can be particularly useful if the crown requires repair, if the screw needs attention, or if the implant needs to be evaluated.

Cemented crowns may also be maintained successfully, but removing a cemented crown can be more difficult and may sometimes require damaging or replacing the restoration.

For this reason, retrievability is often an important factor when planning an implant restoration.

What About Excess Cement Around Dental Implants?

One consideration with cemented implant restorations is the possibility of excess cement remaining around the implant crown or abutment.

If excess cement is not completely removed, it may contribute to inflammation of the tissues surrounding the implant.

Careful cement selection, crown and abutment design, appropriate cementation techniques and thorough removal of excess cement are therefore important.

This does not mean that every cemented implant crown will cause problems. Cemented implant restorations can be successful when appropriately planned and maintained.

Screw-Retained vs Cemented: Which Is Stronger?

It is not accurate to say that one retention method is always stronger than the other.

Both screw-retained and cemented implant restorations can provide durable functional results when the implant, abutment, crown and bite are appropriately planned.

The long-term success of an implant restoration depends on multiple factors, including implant position, bone and soft-tissue conditions, occlusion, restoration design, oral hygiene, material selection and regular maintenance.

The choice of retention method should therefore be based on the complete clinical situation rather than strength alone.

Which Is Easier to Repair?

Screw-retained restorations generally have an advantage when future removal is anticipated.

The clinician can usually access the screw, remove the restoration and assess the implant and surrounding components.

With a cemented crown, removal may be more difficult because the crown is bonded to the abutment. Depending on the design and cement used, removing the crown may require significant force or may result in damage to the restoration.

For patients who may require future access to their implant restoration, retrievability can be an important consideration.

When Is a Screw-Retained Crown Preferred?

A screw-retained crown may be preferred when:

• The implant position allows an acceptable screw-access location

• Easy future removal is desirable

• Maintenance or repair access is important

• The restoration is part of a larger implant-supported reconstruction

• Avoiding cement around the implant is a priority

• The clinician considers retrievability particularly important

When Is a Cemented Crown Preferred?

A cemented crown may be considered when:

• The implant position makes screw access aesthetically or functionally unfavourable

• A screw-access channel would emerge in an undesirable location

• The restoration design is better suited to cement retention

• The clinical situation benefits from a conventional crown-and-abutment approach

The decision should always be made after assessing the implant position, available space, bite, aesthetics and restorative requirements.

Can an Implant Crown Be Changed From Cemented to Screw-Retained?

In some situations, a restoration can be redesigned or replaced with a different retention method.

However, changing from cemented to screw-retained is not simply a matter of changing the crown. The implant position, abutment design, available restorative space and angle of the implant must all be considered.

If a screw-retained restoration is being considered, this is ideally planned before the final implant crown is manufactured.

Screw-Retained vs Cemented Implant Crown: Comparison

Screw-retained implant crowns:

• Secured with a screw

• Generally easier to remove

• Good option when retrievability is important

• No cement is required to retain the crown

• Screw-access channel is required

• Implant position is important for ideal screw access

Cemented implant crowns:

• Secured to an abutment with dental cement

• No screw-access opening through the visible crown

• Can provide useful flexibility when implant angulation is unfavourable

• May offer good aesthetic results in selected situations

• Removal can be more difficult

• Careful cementation and removal of excess cement are important

Are Screw-Retained Implant Crowns Better Than Cemented Crowns?

There is no single answer that applies to every patient.

Screw-retained implant crowns are often attractive because of their retrievability and the absence of cement around the implant. Cemented implant crowns can be advantageous when implant positioning makes screw access difficult or when the restorative design is better suited to cement retention.

The best choice depends on the individual case.

During implant treatment planning, your dentist can assess the implant position, bite, aesthetics, available space and restoration design before deciding which approach is most appropriate.

How Long Do Implant Crowns Last?

Implant crowns are designed to provide long-term function, but they are not necessarily permanent.

The lifespan of an implant crown depends on factors such as oral hygiene, biting forces, grinding or clenching, restoration design, material, implant position and regular professional maintenance.

The implant itself and the crown are also different components. An implant may remain stable for many years while the crown or another prosthetic component may eventually require repair or replacement.

Regular dental examinations can help identify problems early and maintain the health and function of the implant restoration.

Caring for a Screw-Retained or Cemented Implant Crown

Good oral hygiene is essential regardless of the retention method.

Patients with implant crowns should:

• Brush twice daily with an appropriate toothbrush

• Clean around the implant crown carefully

• Use interdental brushes, floss or other recommended cleaning aids

• Attend regular dental examinations

• Follow professional implant maintenance recommendations

• Report movement, discomfort, bleeding or changes around the implant

Regular maintenance is particularly important because problems around dental implants can sometimes develop without obvious symptoms in the early stages.

Choosing the Right Implant Crown for Your Situation

The choice between a screw-retained and cemented implant crown should be made as part of the overall implant treatment plan.

There is no universal solution that is best for every implant.

The ideal restoration depends on the position and angulation of the implant, the available restorative space, the patient's bite, aesthetic requirements, the type of restoration and the anticipated need for future maintenance.

A carefully planned implant restoration should aim to provide a combination of function, aesthetics, stability, cleanability and long-term maintainability.

Frequently Asked Questions

Is a screw-retained implant crown better than a cemented crown?

Neither option is universally better. Screw-retained crowns offer excellent retrievability and avoid cement retention, while cemented crowns can be useful when implant positioning makes screw access difficult. The appropriate choice depends on the individual case.

Are screw-retained implant crowns removable?

Yes. One of the main advantages of a screw-retained implant crown is that it can generally be removed by a dentist when access is required for maintenance, repair or evaluation.

Do cemented implant crowns have screw holes?

No. The visible crown does not require a screw-access hole because it is cemented onto an implant abutment.

Can excess cement damage dental implants?

Excess cement left around an implant restoration can contribute to inflammation of the surrounding tissues. Careful cementation and thorough removal of excess cement are therefore important.

Which implant crown looks more natural?

Both screw-retained and cemented implant crowns can look highly natural. The final appearance depends on implant position, gum contours, crown design, materials, colour and laboratory fabrication, as well as the retention method.

Which implant crown is easier to maintain?

Screw-retained crowns are generally easier to remove when professional access is required. However, both types of implant crowns require regular cleaning and professional maintenance.

Can a dentist replace a cemented implant crown?

A cemented implant crown can sometimes be removed and replaced, although the difficulty depends on the crown, abutment, cement and restoration design. In some cases, removing the crown may result in damage to the restoration.

Does the type of implant crown affect implant longevity?

The retention method is only one factor in the long-term performance of an implant restoration. Implant position, oral hygiene, bite forces, restoration design, maintenance and the health of the tissues around the implant are also important.

Conclusion

Screw-retained and cemented implant crowns are both established approaches to restoring dental implants.

Screw-retained restorations offer the important advantage of retrievability and avoid the use of cement around the implant. Cemented restorations can provide excellent aesthetics and may be useful when implant position makes screw access difficult.

Rather than choosing one method for every patient, the restoration should be selected according to the individual clinical situation.

If you are considering a dental implant crown and would like to understand which restoration may be appropriate for your situation, an implant consultation can assess the implant position, bite, aesthetics and restorative options before treatment is finalised.

DR. FARAZ HEDAYAT SERESHT

Advanced Implant Dentistry