One-piece implant
Also known as: Single-piece implant, Monobloc implant
An implant in which the part placed in bone and the part carrying the restoration are manufactured as a single component, so there is no implant–abutment joint.
Research in progress. Some fields on this entry are not yet verified against a primary source, so we have left them blank rather than filling them in — and this page is not published to search engines until they are.
Key facts
| Classification | The ITI narrow-diameter classification identifies its category 1 (below 3.0 mm, mini-implants) as one-piece and its categories 2 and 3 as two-piece, treating component count as a design distinctionVerified spec[1] |
|---|---|
| Clinical evidence | The 7th ITI Consensus Conference (2023) reported that the clinical data for zirconia implants apply mainly to one-piece designs supporting single crowns and three-unit fixed dental prostheses, with a mean survival of 97.2% (range 93.8–100%) at five yearsVerified spec[2] |
| How it differs | Distinguished from a two-piece implant by the absence of a screwed joint. It is not the same thing as a tissue-level implant, although many tissue-level implants are also one-piece. |
| Limitations | With no separate abutment there is nothing to loosen and no microgap at the connection, but there is also no way to change the angle or height of the abutment after placement. The implant must therefore be positioned to prosthetic tolerances at surgery, and it is exposed in the mouth from day one, so it cannot be left to heal fully submerged. |
| Available diameters | Insufficient evidence(One-piece designs span a wide diameter range across manufacturers; we have not attached a sourced range) |
Overview
A one-piece implant is milled as a single unit, so the section in the bone and the section carrying the crown are the same object. That removes the screwed joint — and with it screw loosening and the microgap — but it also removes every chance to correct position after surgery, because the abutment angle is fixed the moment the implant is seated. One-piece designs are most familiar in two places: very narrow mini-implants used to retain a denture, and ceramic implants, where the majority of published clinical data still relates to one-piece rather than two-piece systems. The common confusion worth clearing up is that "one-piece" and "tissue-level" are not synonyms; one describes how many components the implant has, the other describes where the connection sits relative to the bone.
Sources
Numbers match the citations beside each claim above.
Clinical evidence
- [1]Narrow-Diameter Implants — ITI Consensus Statement — International Team for Implantology (ITI), 2014. Accessed 2026-07-21.
- [2]Clinical and Radiographic Outcomes of Zirconia Dental Implants — ITI Consensus Statement — International Team for Implantology (ITI), 2023. Accessed 2026-07-21.