A screw-retained implant crown can still contain a bonded connection. In a hybrid restoration, the tooth-colored structure is attached to a titanium base, while a screw secures the assembly to its supporting connection. Separation at the bonded surface is a different problem from a loose screw.
Ivoclar describes extraoral bonding of ceramic structures to titanium bases for hybrid abutments and crowns. The presence of a screw therefore does not mean every part of the finished restoration is held together by that screw alone.
Two connections inside a hybrid restoration
| Connection | Its role |
|---|---|
| Ceramic structure to titanium base | A bonded interface joins these parts of the restoration. |
| Restoration to supporting implant connection | The retaining screw secures the assembly. |
Some restorations use a separate crown on an abutment; others combine the crown and abutment structure. A description such as "my crown came off" cannot establish which design you have or which connection failed.
The professional discussion of Ti-base debonding in Perio Implant Advisory examines the bonded interface and the clinical-laboratory workflow. It does not make a photograph sufficient to diagnose an individual case.
What to tell the dental office
Contact the office when a crown detaches. Explain what happened in ordinary terms: whether the tooth-shaped part came away, whether a separate metal part came with it and whether you noticed movement beforehand. Do not pull on a remaining component to test it.
Keep any detached parts in a container and ask the office what to bring. Avoid attempting a repair with household glue or temporary material. The professional needs to inspect the parts and the supporting connection before deciding what can be reused.
If there is pain or looseness, say so when calling. The FDA advises telling a dental provider promptly about a loose or painful implant. A component problem should not be treated as harmless merely because the implant body might still be in place.
Questions that clarify the proposed repair
Ask the dentist to name the failed connection. This gives you a way to understand why the proposed repair is appropriate without trying to diagnose it yourself.
- Did the bonded interface separate, did the screw loosen or is another component damaged?
- What inspection is needed before deciding whether the existing base and crown can be used?
- Does the restoration need laboratory work, and which records will accompany it?
- What will be checked before the repaired restoration is delivered?
Repeated separation deserves an explanation of the checks performed, not an automatic assumption that one person or one material is at fault. The source article discusses fit and bonding considerations, but it cannot establish the cause of your event.
Record what changed
After repair, ask for a brief record identifying the restored tooth, the components retained or replaced and the date. Keep the laboratory information if supplied. A later dentist should be able to distinguish the current restoration from the one initially delivered.
Our implant record handoff helps organize that information. The material overview at zirconia abutments explains a different question: what the component is made from.
Sources accessed October 12, 2026. This patient explanation cannot determine which connection has failed or whether a detached restoration can be repaired.