Osstem TS II vs TS III

Quick answer

TS II is the straight-walled member of the Osstem TS line and TS III the tapered one. They share the SA surface, the internal hex with an 11 degree taper and the same prosthetic components, so the difference is in how the implant is seated rather than in what it is made of or how it is restored.

Side by side

Rows appear only where at least one side has data. Where a value is not verified we say so rather than leaving it blank.

Attribute	Osstem TS II SA	Osstem TS III SA
Manufacturer	Osstem Implant Co., Ltd.Manufacturer-reported[1]	Osstem Implant Co., Ltd.Manufacturer-reported[1][2]
Implant level	Bone level — described as a submerged-type implantManufacturer-reported[1]	Bone level — the catalogue describes TSIII SA as a submerged-type implantManufacturer-reported[1]
Body geometry	Straight body design, which the catalogue says allows insertion depth to be adjusted easilyManufacturer-reported[1]	Tapered body design, stated to give initial fixation at placementManufacturer-reported[1]
Material	Titanium — the instructions for use state that the fixture is made mainly of titaniumManufacturer-reported[1]	Titanium — the instructions for use state that the fixture is made mainly of titaniumManufacturer-reported[1]The instructions for use do not name a titanium grade for the fixture.
Surface	SA — sandblasted with alumina and acid-etchedManufacturer-reported[1]	SA — sandblasted with alumina and acid-etchedManufacturer-reported[2][1]
Connection	Internal hex with an 11-degree tapered connectionManufacturer-reported[1]	Internal hex with an 11-degree tapered connection; a mini connection is used on Ø3.0 and Ø3.5 fixtures and a regular connection on Ø4.0 and aboveManufacturer-reported[1]
Platform switching	Not publicly verified	Osstem lists platform switching among the features of the TSIII SA fixtureManufacturer-reported[2]
Available diameters	Ø3.5, 4.0, 4.5 and 5.0 mmManufacturer-reported[1]	Ø3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 and 7.0 mmManufacturer-reported[1]Read from the fixture ordering tables in the TS System catalogue.
Available lengths	Ø3.5 in 8.5, 10, 11.5 and 13 mm; Ø4.0 and Ø4.5 in 7, 8.5, 10, 11.5 and 13 mm; Ø5.0 in 6, 7, 8.5, 10, 11.5 and 13 mmManufacturer-reported[1]	6, 7, 8.5, 10, 11.5 and 13 mm at Ø4.0 and above; Ø3.0 and Ø3.5 from 8.5 to 13 mm; Ø5.0 additionally in 4 mm and 5 mmManufacturer-reported[1]Availability varies by diameter; taken from the fixture product codes in the catalogue.
Immediate protocol	Recommended insertion torque of 40 Ncm or lessManufacturer-reported[1]	Recommended placement torque below 40 Ncm; the catalogue states the fixture acquires initial fixation for immediate loading in soft boneManufacturer-reported[1]
Short implant option	Not publicly verified	Extra-short options are offered; the instructions for use restrict implants shorter than 7 mm with a diameter of 5 mm or more to the molar region and advise splinting and a longer healing periodManufacturer-reported[1]

Manufacturer

Osstem TS II SA

Osstem Implant Co., Ltd.Manufacturer-reported[1]

Osstem TS III SA

Osstem Implant Co., Ltd.Manufacturer-reported[1][2]

Implant level

Osstem TS II SA

Bone level — described as a submerged-type implantManufacturer-reported[1]

Osstem TS III SA

Bone level — the catalogue describes TSIII SA as a submerged-type implantManufacturer-reported[1]

Body geometry

Osstem TS II SA

Straight body design, which the catalogue says allows insertion depth to be adjusted easilyManufacturer-reported[1]

Osstem TS III SA

Tapered body design, stated to give initial fixation at placementManufacturer-reported[1]

Material

Osstem TS II SA

Titanium — the instructions for use state that the fixture is made mainly of titaniumManufacturer-reported[1]

Osstem TS III SA

Titanium — the instructions for use state that the fixture is made mainly of titaniumManufacturer-reported[1]The instructions for use do not name a titanium grade for the fixture.

Surface

Osstem TS II SA

SA — sandblasted with alumina and acid-etchedManufacturer-reported[1]

Osstem TS III SA

SA — sandblasted with alumina and acid-etchedManufacturer-reported[2][1]

Connection

Osstem TS II SA

Internal hex with an 11-degree tapered connectionManufacturer-reported[1]

Osstem TS III SA

Internal hex with an 11-degree tapered connection; a mini connection is used on Ø3.0 and Ø3.5 fixtures and a regular connection on Ø4.0 and aboveManufacturer-reported[1]

Platform switching

Osstem TS II SA

Not publicly verified

Osstem TS III SA

Osstem lists platform switching among the features of the TSIII SA fixtureManufacturer-reported[2]

Available diameters

Osstem TS II SA

Ø3.5, 4.0, 4.5 and 5.0 mmManufacturer-reported[1]

Osstem TS III SA

Ø3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 and 7.0 mmManufacturer-reported[1]Read from the fixture ordering tables in the TS System catalogue.

Available lengths

Osstem TS II SA

Ø3.5 in 8.5, 10, 11.5 and 13 mm; Ø4.0 and Ø4.5 in 7, 8.5, 10, 11.5 and 13 mm; Ø5.0 in 6, 7, 8.5, 10, 11.5 and 13 mmManufacturer-reported[1]

Osstem TS III SA

6, 7, 8.5, 10, 11.5 and 13 mm at Ø4.0 and above; Ø3.0 and Ø3.5 from 8.5 to 13 mm; Ø5.0 additionally in 4 mm and 5 mmManufacturer-reported[1]Availability varies by diameter; taken from the fixture product codes in the catalogue.

Immediate protocol

Osstem TS II SA

Recommended insertion torque of 40 Ncm or lessManufacturer-reported[1]

Osstem TS III SA

Recommended placement torque below 40 Ncm; the catalogue states the fixture acquires initial fixation for immediate loading in soft boneManufacturer-reported[1]

Short implant option

Osstem TS II SA

Not publicly verified

Osstem TS III SA

Extra-short options are offered; the instructions for use restrict implants shorter than 7 mm with a diameter of 5 mm or more to the molar region and advise splinting and a longer healing periodManufacturer-reported[1]

The biggest differences

TS II has a straight body, which the Osstem catalogue says makes insertion depth easy to adjust — a real advantage when the final vertical position matters and the surgeon wants to be able to back off or advance without losing grip. TS III is tapered and gains its fixation as it seats. Both use a corkscrew thread with smaller threads in the upper section for stability in soft bone.

Where they are alike

Surface, connection and material are the same: SA blasted and acid-etched, internal hex within an 11 degree taper, and titanium as stated in the instructions for use. Both are described as submerged-type bone-level implants and both carry a recommended insertion torque of 40 Ncm or less. On the restorative side they are interchangeable.

Design

The size ranges tell you how the two are used. TS II is offered at 3.5, 4.0, 4.5 and 5.0 mm; TS III at 3.0 through 7.0 mm, including the ultra-short 4 mm and 5 mm fixtures at 5.0 mm diameter and platform switching, which we have not recorded for TS II. TS III is the broader product and the one most people mean when they say 'an Osstem implant'.

What may influence clinical selection

A parallel-walled implant is generally the more controlled option in dense, healed bone where primary stability is not in doubt and depth control is the priority. A tapered implant earns its place where the site is fresh or the bone is soft. Neither shape is superior; the narrower catalogue of TS II is a reasonable indication of how much narrower its role is in practice.

So which is better?

Neither is universally better, and any page telling you otherwise is selling something. These are different designs with different trade-offs, and the right choice depends on the bone available, the position in the mouth, the planned restoration, and what the treating clinician is equipped and experienced to place and to service years from now. That last point is easy to overlook and matters more than most specification differences: components need to remain obtainable for as long as the implant is in place.

Regulatory record

US FDA 510(k) clearances held by each side, retrieved from the FDA's own database. Clearances are held at brand level, so every system from the same brand shares this record.

Osstem TS II SA

via Osstem

FDA 510(k) clearances

2016 – 2023

Filed by Osstem Implant Co., Ltd.

Osstem TS III SA

via Osstem

FDA 510(k) clearances

2016 – 2023

Filed by Osstem Implant Co., Ltd.

A clearance count is not a quality ranking, and the larger number is not the better implant. A brand with more clearances usually has a longer history or a broader component range. FDA "clearance" also is not FDA "approval" — it means the device was accepted as substantially equivalent to one already on the market, generally without a clinical trial. A blank here means we could not match a filing with confidence, not that the brand lacks authorisation. What these actually mean →

Sources

Numbers match the citations beside each claim above.

Primary sources

[1]TS System — Catalog & User Manual (fixtures, abutments, instructions for use) — Osstem Implant UK Ltd, 2017. Accessed 2026-07-21.
[2]TS Dental Implant System — Osstem Implant UK Ltd. Accessed 2026-07-21.