Screw-Retained vs Cement-Retained Implant Crowns
Every implant crown needs to connect to the implant post that sits in the jawbone. There are two main ways to make this connection: with a screw or with cement. The choice between them affects maintenance, aesthetics, and long-term serviceability.
Screw-Retained Implant Crowns
A screw-retained crown attaches directly to the implant post through a small screw that passes through a hole in the top of the crown. After placement, the access hole is filled with a tooth-colored composite material so it is not visible.
The main advantage of screw-retained crowns is retrievability. If the crown needs repair, replacement, or if the implant needs to be checked, the dentist can simply unscrew the crown without damaging it. This makes long-term maintenance simpler. Screw-retained crowns also eliminate the risk of excess cement irritating the gum tissue around the implant.
The tradeoff is that the screw access hole must be positioned on the biting surface or the back of the crown. For front teeth where appearance is critical, this can sometimes be a cosmetic concern, though modern techniques have largely minimized this issue.
Cement-Retained Implant Crowns
A cement-retained crown is bonded to an abutment (a connector piece) that screws into the implant post. The crown is placed over the abutment and held in place with dental cement, similar to how a traditional crown is cemented onto a prepared natural tooth.
Cement-retained crowns offer a smooth, uninterrupted surface with no screw hole to fill, which can provide a slightly better aesthetic result in some situations. They are also easier to fabricate when the implant is angled in a way that would place the screw access hole in an awkward position.
The disadvantage is that removing the crown for maintenance or repair requires cutting it off, which means a new crown must be made. There is also a risk that excess cement can squeeze below the gumline during placement, which may irritate the tissue and contribute to peri-implant inflammation if not fully removed.
Which Attachment Type Is Better?
Many prosthodontists now prefer screw-retained crowns for most implant cases because of the ease of retrieval and the absence of cement-related complications. However, cement-retained crowns remain a good option when implant angulation makes screw retention impractical or when aesthetics in the front of the mouth are the top priority. Your prosthodontist will recommend the attachment type that best fits your specific case.
Implant Crown Materials Compared
The material your implant crown is made from affects how it looks, how long it lasts, and how much it costs. Three materials account for the vast majority of implant crowns placed today.
Zirconia (Full Zirconia or Layered Zirconia)
Zirconia is a high-strength ceramic material that has become the most popular choice for implant crowns. Full zirconia crowns (monolithic zirconia) are milled from a single block of material and are exceptionally strong, making them ideal for back teeth that endure heavy chewing forces.
Layered zirconia crowns have a strong zirconia core with a layer of porcelain on the outside for a more natural, translucent appearance. These are often used for front teeth where aesthetics matter most. Zirconia is biocompatible, resistant to chipping, and does not corrode. It is also less likely to cause wear on opposing teeth compared to some older ceramic materials.
Zirconia crowns typically cost $1,200 to $2,500 per crown. Costs vary by location, provider, and whether the crown is monolithic or layered.
Full Porcelain (All-Ceramic)
Full porcelain crowns, often made from lithium disilicate (such as IPS e.max), provide the most lifelike appearance. They mimic the translucency and color variations of natural enamel better than any other material, which makes them a strong choice for front teeth and other highly visible positions.
The limitation of full porcelain is that it is not as strong as zirconia. For back teeth that absorb heavy biting forces, porcelain is more prone to chipping or fracture over time. For front teeth with normal biting loads, porcelain crowns can last 10 to 15 years or longer with proper care.
Full porcelain implant crowns typically cost $1,000 to $2,500 per crown.
Porcelain-Fused-to-Metal (PFM)
PFM crowns have a metal substructure covered with a layer of porcelain. This design has been used in dentistry for decades and provides a reliable combination of strength and aesthetics. The metal core gives the crown its strength, while the porcelain exterior provides a tooth-like appearance.
PFM crowns are less expensive than zirconia and work well for both front and back teeth. The main cosmetic drawback is that the metal edge can sometimes become visible at the gumline, particularly if the gum tissue recedes over time. A dark line at the margin is the most common aesthetic complaint with PFM crowns.
PFM implant crowns typically cost $800 to $2,000 per crown. They remain a solid, proven option, especially when cost is a significant factor.
Which Material for Which Tooth?
The best material for your implant crown depends on where the tooth is located in your mouth, how visible it is when you smile, and how much force it needs to withstand.
Front Teeth (Incisors and Canines)
Aesthetics are the top priority for front teeth. Full porcelain or layered zirconia crowns provide the most natural-looking result. These teeth experience less biting force than molars, so the slightly lower strength of porcelain is generally not a concern. A prosthodontist can match the color, shape, and translucency to your natural teeth with precision.
Back Teeth (Premolars and Molars)
Strength and durability are more important for back teeth. Full (monolithic) zirconia is the preferred material for molars because it resists fracture under heavy chewing forces. PFM crowns are also a reliable option for back teeth. Since these teeth are less visible, a slight tradeoff in aesthetics is acceptable to many patients in exchange for greater durability or lower cost.
Implant Crown Cost and Longevity
Implant crown costs range from $800 to $3,000 per crown depending on the material, attachment type, and provider. Costs vary by location and case complexity.
Most implant crowns last 10 to 15 years before they need replacement. Zirconia crowns may last longer due to their superior strength, though long-term data is still being collected as the material is relatively newer in widespread clinical use. When an implant crown wears out, it can be replaced without affecting the implant post, which continues to function in the jawbone.
Dental insurance may cover a portion of the implant crown if the tooth was lost due to injury or disease rather than elective reasons. Coverage varies significantly between plans. Many prosthodontist offices offer payment plans or work with financing companies to make implant crowns more accessible.
Why See a Prosthodontist for Implant Crowns
A prosthodontist is a dental specialist who completes 3 years of advanced residency training after dental school, focused on the restoration and replacement of teeth. Prosthodontists have the most specialized training of any dental professional when it comes to designing crowns, bridges, and other restorations that fit precisely and look natural.
For implant crowns, a prosthodontist brings several advantages. They are trained to select the optimal material, design the crown for proper function and aesthetics, and manage the relationship between the implant, abutment, and crown. This is particularly valuable for front teeth where a fraction of a millimeter in shade, contour, or position affects the final result.
Prosthodontists also coordinate with the oral surgeon or periodontist who placed the implant to ensure the crown is designed to work with the specific implant system and angulation. This collaborative approach leads to better long-term outcomes.
What Happens When an Implant Crown Needs Replacing
Replacing an implant crown is simpler than the original implant placement. Since the implant post is already integrated into the jawbone, no surgery is required. For screw-retained crowns, the prosthodontist unscrews the old crown, takes new impressions or digital scans, and attaches the new crown once it is fabricated. The process typically takes two appointments.
For cement-retained crowns, the old crown is carefully cut off and a new one is fabricated and cemented in place. The abutment (connector piece) is usually inspected at this time and replaced if it shows wear.
Signs that an implant crown may need replacement include visible chips or cracks, a crown that feels loose, a change in how your bite feels, or wear that makes the surface rough or uneven. Regular checkups allow your dentist to catch early signs of wear before the crown fails.
Find a Prosthodontist Near You
A prosthodontist can evaluate your implant, recommend the right crown material and attachment type, and deliver a restoration that looks and functions like a natural tooth. Search the My Specialty Dentist directory to find prosthodontists in your area with verified credentials.
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