Re-tightening, as the manufacturer states it
Osstem states no re-tightening interval in the TS catalog or the 2013 prosthetic procedure we read.
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IMPLANT TORQUE · OSSTEM
Osstem torque values.
One implant site. Five moments where a number decides whether the screw holds: placement, healing, abutment, prosthesis, re-tightening. Every value below is quoted from Osstem documentation, with the document named beside it.
Scale 0–70 Ncm. Select a component to move the pointer. Values beyond the scale sit at its end.CONNECTIONSTS internal conical hex — mini and regular platforms (TS II · TS III · TS IV)
LINES COVEREDTS II · TS III · TS IV · Multi Abutment · Multi Angled Abutment · Convertible Abutment
TrazaLabTORQUE SCALE OsstemManufacturer document
EDITORIAL VISUALIZATION≤ 40Ncm
PLACEMENTTS II · TS III fixtures — HA-coated under 35; adverse effects above 55
“Recommended insertion torque: ≤ 40 Ncm.” “Excessive torque (greater than 55 Ncm) in the fixture placement can have adverse effects such as partial fracture or necrosis of the bone.” HA-coated: “insertion torque of the implant should be less than 35 Ncm.”
DRIVERFixture mount · torque wrench
Osstem TS System User Manual / Catalog (Osstem UK)
THE VALUES
Every component, its number, its document.
Rows are grouped in treatment order. Where Osstem publishes a hand-tight instruction instead of a number, the row says so. Where nothing is published, the row says that too.
| Component | Applies to | Torque | From the document | Source |
|---|---|---|---|---|
| PlacementInsertion torque of the fixture | TS II · TS III fixtures — HA-coated under 35; adverse effects above 55 Driver: Fixture mount · torque wrench | ≤ 40Ncm | “Recommended insertion torque: ≤ 40 Ncm.” “Excessive torque (greater than 55 Ncm) in the fixture placement can have adverse effects such as partial fracture or necrosis of the bone.” HA-coated: “insertion torque of the implant should be less than 35 Ncm.” | Osstem TS System User Manual / Catalog (Osstem UK)Manufacturer document |
| HealingHealing abutment · cover screw | Cover screw · healing abutment · impression coping — hand tightening, less than 10 Driver: 1.2 hex hand driver | hand-tight | “Cover screw, Healing abutment, Impression coping, Bite index — Hand tightening (less than 10 Ncm).” | Osstem TS Implant System — Prosthetic Procedure (2013)Manufacturer document |
| AbutmentFinal abutment screw at implant level | Final abutment screw — mini 20 · regular 30 (Transfer, Angled, FreeForm ST, GoldCast, ZioCera, Rigid, Convertible) Driver: 1.2 hex driver | 20 · 30Ncm | “Tightening torque — Mini: 20 Ncm — Regular: 30 Ncm.” Catalog: “Recommended tightening torque: 20 Ncm (mini), 30 Ncm (regular).” | Osstem TS Implant System — Prosthetic Procedure (2013)Manufacturer document |
| Multi-unitMulti-unit abutment into the implant | Straight Multi / Convertible abutment 30 · Multi Angled abutment mini 20, regular 30 Driver: Multi Abutment Outer Driver (MAOD) · 1.2 hex (angled) | 30 · 20Ncm | “Multi Angled Abutment … Use a 1.2 hex driver, Recommended tightening torque: 20 Ncm (mini), 30 Ncm (regular).” 2013 procedure: “Convertible abutment — Abutment: 30 Ncm” with the outer driver; the current UK catalog names the outer driver without a number. | Osstem TS System User Manual / Catalog (Osstem UK)Manufacturer document |
| Prosthetic screwScrew that holds the prosthesis on the abutment | Cylinder screw — Multi Combination Cylinder · Convertible cylinder Driver: 1.2 hex driver | 20Ncm | “Multi Combination Cylinder … Using 1.2 hex driver, Recommended tightening torque: 20 Ncm.” 2013: “Abutment: 30 Ncm — Cylinder Screw: 20 Ncm.” | Osstem TS System User Manual / Catalog (Osstem UK)Manufacturer document |
| TemporaryTemporary abutment or coping | Quick Temporary Abutment | not published | The TS catalog page for the temporary abutment prints no torque line in the documents we read. Not published — confirm the IFU packed with the component. | Not published — confirm IFU |
Documents read
- Osstem TS System User Manual / Catalog (Osstem UK)
- Osstem TS Implant System — Prosthetic Procedure (2013)
Newest revision read: 2013. Manufacturers revise these documents; the revision printed on your IFU wins.
Values are quoted from manufacturer documentation and can change by component, platform and revision. Confirm the IFU for the component and lot in your hand before torquing.
WHY THE SCREW LOOSENS
You torqued it. Then the metal settled.
Torque creates preload — the clamping force that keeps abutment and implant pressed together. Microscopic peaks on the thread surfaces flatten under that load, and part of the preload is gone before the patient leaves the chair. The literature calls it the settling effect, or embedment relaxation.
PRELOAD
EDITORIAL VISUALIZATIONThe wrench clicks at the manufacturer’s value.
Preload
LITERATURE
- Winkler S, Ring K, Ring JD, Boberick KG. Implant screw mechanics and the settling effect: overview. J Oral Implantol 2003;29:242–245.
- Siamos G, Winkler S, Boberick KG. Relationship between implant preload and screw loosening on implant-supported prostheses. J Oral Implantol 2002;28:67–73.
- Implant Screw Loosening: A Narrative Review of Medium- and Long-Term Clinical Evidence. Applied Sciences 2026;16:6253.
ONE SITE, FIVE MOMENTS
Where the numbers appear in the treatment.
Site 36, one fixture, one crown. The same Osstem values from the table, placed on the moment each one is read off the wrench.
EDITORIAL VISUALIZATION- 01PLACEMENT≤ 40NcmFixture seated
TS II · TS III fixtures — HA-coated under 35; adverse effects above 55
- 02HEALINGhand-tightHealing abutment on
Cover screw · healing abutment · impression coping — hand tightening, less than 10
- 03ABUTMENT20 · 30NcmFinal abutment torqued
Final abutment screw — mini 20 · regular 30 (Transfer, Angled, FreeForm ST, GoldCast, ZioCera, Rigid, Convertible)
- 04PROSTHESIS20NcmCrown screw seated
Cylinder screw — Multi Combination Cylinder · Convertible cylinder
- 05RE-TIGHTENING20 · 30NcmSame value, second pass
Final abutment screw — mini 20 · regular 30 (Transfer, Angled, FreeForm ST, GoldCast, ZioCera, Rigid, Convertible)
Shown as the same value as the abutment row. Whether and when to re-tighten follows the manufacturer statement quoted in the values section.
AFTER THE CLICK
The value you applied is the value the laboratory should read.
In TrazaLab the implant line on a tooth site keeps system, platform, connection, abutment and applied torque together. It travels into the Digital Rx and onto the laboratory’s per-tooth sheet. An unconfirmed torque is not blank — the laboratory sees it as a gap.
See the Digital RxTrazaLabTREATMENT DESIGN · TOOTH 36Digital Rx
TREATMENT DESIGN · TOOTH 36
IMPLANT SYSTEMOsstem
PLATFORMTS II
CONNECTIONTS internal conical hex — mini and regular platforms (TS II
ABUTMENTFinal abutment
TORQUE APPLIED20 · 30 Ncm
DIGITAL RXTorque applied · 20 · 30 Ncm
LABORATORY · PER-TOOTH SHEET36 · implant crown · torque 20 · 30 Ncm
OTHER SYSTEMS
Nine systems, one way of reading them.
Each page is built the same way: quoted values, the document beside them, and the gaps stated as gaps.
ENVISTA
Nobel Biocare
35Ncm
Final abutment · Conical Connection (CC) · Tri-channel (NobelReplace) · External hex (Brånemark)
STRAUMANN GROUP
Straumann
35Ncm
Final abutment · CrossFit (BL/BLT) · TorcFit (BLX) · TLX NT/RT/WT
STRAUMANN GROUP
Neodent
20Ncm
Final abutment · Grand Morse (GM) — one prosthetic platform for Helix, Drive, Titamax, Helix Long and Zygoma
ZIMVIE
Zimmer Biomet
30Ncm
Final abutment · Tapered Screw-Vent internal hex (TSV · TM · TSX) · 3i Certain internal · 3i External hex
MIS IMPLANTS TECHNOLOGIES (DENTSPLY SIRONA)
MIS
30Ncm
Final abutment · Conical connection (C1 · V3) · Internal hex (Seven · M4) · Multi-Unit · CONNECT
OSSTEM IMPLANT
Osstem
20 · 30Ncm
Final abutment · TS internal conical hex — mini and regular platforms (TS II · TS III · TS IV)
BIOHORIZONS CAMLOG
BioHorizons
30Ncm
Final abutment · Internal hex (Tapered Internal · Tapered Pro · Tapered Plus · 3.0 · Tissue Level) · Conical (Tapered Pro Conical)
MEGAGEN IMPLANT
Megagen
25Ncm
Final abutment · AnyRidge internal conical · Blue Diamond conical · AnyOne External hex
OSSTEM IMPLANT (US)
Hiossen
20 · 30Ncm
Final abutment · ET / EK internal conical hex — mini and regular platforms · SS (Octa) · EM
QUESTIONS
Asked before the wrench is set.
Values are quoted from manufacturer documentation and can change by component, platform and revision. Confirm the IFU for the component and lot in your hand before torquing.
01Is the Osstem abutment torque 20 or 30 Ncm?+
It depends on the platform, not the abutment. The mini platform tightens to 20 Ncm, the regular platform to 30 Ncm, and that rule holds for Transfer, angled, FreeForm ST, GoldCast, ZioCera, Rigid and Convertible abutments. The platform belongs next to the brand on the case record.
02What is the maximum insertion torque for an Osstem TS III?+
Osstem recommends 40 Ncm or less and states that excessive torque greater than 55 Ncm can cause partial fracture or necrosis of the bone. HA-coated fixtures are held under 35 Ncm. The documents do not print a single hard maximum between those two lines.
03Do these Osstem values replace the IFU?+
No. They are quoted from the manufacturer documents listed on this page, with the revision year noted. The IFU packed with your component and lot is the instruction; this page puts the values next to the treatment step and the case record.
04Should I re-tighten after ten minutes?+
The literature on the settling effect widely advocates a second application at the same value after about ten minutes, and in vitro work shows it partially restores preload. The evidence for a fixed interval is limited. The manufacturer statement for this system is quoted in the values section; where it says nothing, this page does not turn that silence into a rule.
05Where does the applied torque go after the appointment?+
In TrazaLab it is a field on the implant line of the tooth site, next to system, platform, connection and abutment. The Digital Rx carries it to the laboratory, whose per-tooth sheet prints the torque. If it was never confirmed, the packet shows “Not on Rx” instead of a number.
AFTER THE CLICK
Read the value here. Keep it in the case.
TrazaLab records the implant line with its torque on the tooth site, writes it into the Digital Rx, and shows the laboratory exactly what was applied — or exactly what was not confirmed.