Advantages

• Low probability of screw loosening.
• Easy to work with at difficult angles.
• The hole is not visible for aesthetics.
• Great for anterior cases. The abutment can be shaded and no metal is shown unless implant fixture is too exposed.
• The titanium interface and zirconia abutment fused together prevents the abutment from fracturing.

Disadvantages

• Cannot be used for tight spaces such as for lower small anteriors (minimum thickness is required).
• Cement can cause bone loss & inflammation.

Advantages

• The Implant crown is easily detachable.
• Easy maintenance and repair are possible by detaching.
• Can be utilized when there is limited inter-occlusal space.
• When using resin to cover the hole, the hole is barely visible for aesthetics.
• Because the hole can be covered esthetically, the hole can be angled out towards the buccal for molar implant crowns and possibly premolar implant crowns.
• Porcelain does not delaminate (monolithic zirconia Screw-retained Implant crown).

Disadvantages

• Occlusal contact points need to be made by avoiding the hole.
• May not be able to make ideal contact points.
• Adjusting proximal contacts is difficult.
• Difficult to make broad proximal contacts.
• May detach from TI base depending on how the cement was handled.

Advantages

• The implant crown is easily detachable.
• Easy maintenance and repair are possible by detaching.
• Can be utilized when there is limited inter-occlusal space.

Disadvantages

• The screw is easily loosened by external forces.
• The hole is visible for aesthetics.
• Occlusal contact points need to be made by avoiding the hole.
• May not be able to make ideal contact points.
• Adjusting proximal contacts is difficult.
• Difficult to make broad proximal contacts.
• Cannot be used if the hole is angled towards the buccal.

Advantages

• The cement is easily removed outside of the patient’s mouth.
• The implant crown is easily detachable
• Easy maintenance and repair are possible by detaching.
• Occlusal and proximal contacts can easily be adjusted without screwing and unscrewing the screw.

Disadvantages

• The hole is visible for aesthetics.
• Occlusal contact points need to be made by avoiding the hole.
• May not be able to make Ideal contact points.
• Cannot be used if the hole is angled towards the buccal.
• Adjusting proximal contacts is difficult.
• Difficult to make broad proximal contacts.

Advantages

• Low probability of the abutment screw loosening.
• Easy to work with at difficult angles.
• The crown is easily detachable & replaced.
• Easy maintenance and repair are possible by detaching the crown.

Disadvantages

• If the fit of the crown is not accurate, the tapped screw is susceptible to breakage.