CAMLOG Tube-in-Tube
Also known as: Tube-in-Tube, Tube in Tube connection, CAMLOG connection
CAMLOG’s implant-abutment connection: a butt-joint cylindrical fit in which three grooves in the implant receive three matching cams on the abutment.
Key facts
| Manufacturer | CAMLOG Biotechnologies GmbHVerified spec[1] |
|---|---|
| Connection category | CAMLOG’s whitepaper describes it as "the butt-joint Tube-in-Tube connection", and the company states that the precision of its groove-and-cam principle ensures force and torque distribution across the joint.Manufacturer-reported[2][1] |
| Anti-rotation feature | Three symmetrically arranged interlocking grooves and cams, which CAMLOG states create a precise, stable and antirotational implant-abutment connection.Manufacturer-reported[1][2] |
| Taper angle | None in the conventional sense. CAMLOG describes the joint as a butt joint rather than a cone, so the sealing and stability come from the cylindrical fit and the cams rather than from a friction taper. |
| Platform switching | CAMLOG lists platform switching as an option within the system rather than as an inherent property of the connection.Manufacturer-reported[2] |
| Founded | CAMLOG’s 2020 whitepaper dates the Tube-in-Tube connection to 1996.Manufacturer-reported[2] |
| Clinical evidence | CAMLOG states that the Tube-in-Tube connection appears to minimise micromovements and that its long-term success has been scientifically documented, citing finite element analysis under a 200 N load to ISO 14801.Manufacturer-reported[2][1]Manufacturer-presented evidence summary rather than an independent synthesis. |
Overview
Tube-in-Tube is the odd design out among current connections, because it deliberately does not use a friction taper. A cylinder slides into a cylinder, three cams drop into three grooves, and the screw provides the preload - which puts it structurally closer to an internal hexagon than to a Morse taper, despite the distinctive name. Whether that matters depends on which literature you weigh: comparative reviews consistently find conical joints seal better against bacterial movement, while CAMLOG’s argument is that a precisely machined cylindrical fit with three-point engagement distributes load well and has three decades of clinical record behind it. Both points can be true at once. It is also worth separating the connection from the platform switching, which CAMLOG offers as an option in the system rather than as something the geometry does automatically - so two CAMLOG implants can differ in that respect while sharing the same connection.
Sources
Numbers match the citations beside each claim above.
Primary sources
- [1]CAMLOG Implant System: the Tube-in-Tube Connection — CAMLOG Biotechnologies GmbH. Accessed 2026-07-21.
- [2]CAMLOG Implant System — facts and figures at a glance (whitepaper) — CAMLOG Biotechnologies GmbH, 2020. Accessed 2026-07-21.