CAMLOG SCREW-LINE vs CONELOG PROGRESSIVE-LINE

Quick answer

These are the two halves of the same manufacturer range and the difference is the connection: SCREW-LINE uses the cylindrical Tube-in-Tube interface, CONELOG a 7.5 degree cone with three grooves. Components do not interchange, so the line name has to be on the record.

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	CAMLOG SCREW-LINE	CONELOG PROGRESSIVE-LINE
Current status	Current. CAMLOG publishes a SCREW-LINE work instruction and lists the CAMLOG implant system on its site.Manufacturer-reported[1][2]	Current. CAMLOG publishes a CONELOG PROGRESSIVE-LINE work instruction dated 2019.Manufacturer-reported[3]
Body geometry	Screw implant with a machined shoulder measuring 1.4 mm on the CAMLOG SCREW-LINE Promote implant and 0.4 mm on the Promote plus implant.Manufacturer-reported[1]	A body combining a parallel-walled section with a progressive apical form, developed for high initial stability; CAMLOG also offers a reduced diameter for areas with little bone.Manufacturer-reported[3]
Material	Titanium grade 4.Manufacturer-reported[1]	Titanium grade 4. Abutments and abutment screws are Ti6Al4V ELI.Manufacturer-reported[3]
Surface	Promote — an abrasive-blasted, acid-etched surface — or Promote plus, which extends the treated surface further coronally, leaving only a 0.4 mm machined shoulder.Manufacturer-reported[1]	Promote plus — an abrasive-blasted, acid-etched surface extending over the implant body to the acid-etched implant shoulder.Manufacturer-reported[3]
Connection	CAMLOG Tube-in-Tube — a 5.4 mm deep implant-abutment connection with an antirotational locking mechanism, using three symmetrically arranged grooves in a 1.9 mm deep cylindrical bore in the coronal region. Implants of ∅ 3.3 mm have only the lower inner thread.Manufacturer-reported[1]	A 7.5° cone with three grooves in the inner configuration. CONELOG abutments carry a matching cone and three cams which lock into the grooves, giving a rotation-locked connection.Manufacturer-reported[3]
Platform switching	Manufacturer documentation not located(The SCREW-LINE work instruction does not make a platform-switching claim; CAMLOG attributes integrated platform switching to the CONELOG line instead.)	Integrated platform switching — CAMLOG states the CONELOG abutment does not cover the implant shoulder.Manufacturer-reported[3]
Available diameters	∅ 3.3, 3.8, 4.3, 5.0 and 6.0 mm.Manufacturer-reported[1]	∅ 3.3, 3.8, 4.3 and 5.0 mm, colour-coded grey, yellow, red and blue.Manufacturer-reported[3]
Available lengths	9, 11, 13 and 16 mm for ∅ 3.8, 4.3, 5.0 and 6.0 mm; 11, 13 and 16 mm for ∅ 3.3 mm.Manufacturer-reported[1]	9, 11, 13 and 16 mm for the ∅ 3.3 mm implant; 7, 9, 11, 13 and 16 mm for ∅ 3.8, 4.3 and 5.0 mm.Manufacturer-reported[3]
Narrow implant option	The ∅ 3.3 mm implant is the narrow option and carries only the lower inner thread of the Tube-in-Tube connection.Manufacturer-reported[1]	CAMLOG describes the ∅ 3.3 mm implant as an alternative for areas with little bone.Manufacturer-reported[3]

Current status

CAMLOG SCREW-LINE

Current. CAMLOG publishes a SCREW-LINE work instruction and lists the CAMLOG implant system on its site.Manufacturer-reported[1][2]

CONELOG PROGRESSIVE-LINE

Current. CAMLOG publishes a CONELOG PROGRESSIVE-LINE work instruction dated 2019.Manufacturer-reported[3]

Body geometry

CAMLOG SCREW-LINE

Screw implant with a machined shoulder measuring 1.4 mm on the CAMLOG SCREW-LINE Promote implant and 0.4 mm on the Promote plus implant.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

A body combining a parallel-walled section with a progressive apical form, developed for high initial stability; CAMLOG also offers a reduced diameter for areas with little bone.Manufacturer-reported[3]

Material

CAMLOG SCREW-LINE

Titanium grade 4.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

Titanium grade 4. Abutments and abutment screws are Ti6Al4V ELI.Manufacturer-reported[3]

Surface

CAMLOG SCREW-LINE

Promote — an abrasive-blasted, acid-etched surface — or Promote plus, which extends the treated surface further coronally, leaving only a 0.4 mm machined shoulder.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

Promote plus — an abrasive-blasted, acid-etched surface extending over the implant body to the acid-etched implant shoulder.Manufacturer-reported[3]

Connection

CAMLOG SCREW-LINE

CAMLOG Tube-in-Tube — a 5.4 mm deep implant-abutment connection with an antirotational locking mechanism, using three symmetrically arranged grooves in a 1.9 mm deep cylindrical bore in the coronal region. Implants of ∅ 3.3 mm have only the lower inner thread.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

A 7.5° cone with three grooves in the inner configuration. CONELOG abutments carry a matching cone and three cams which lock into the grooves, giving a rotation-locked connection.Manufacturer-reported[3]

Platform switching

CAMLOG SCREW-LINE

Manufacturer documentation not located(The SCREW-LINE work instruction does not make a platform-switching claim; CAMLOG attributes integrated platform switching to the CONELOG line instead.)

CONELOG PROGRESSIVE-LINE

Integrated platform switching — CAMLOG states the CONELOG abutment does not cover the implant shoulder.Manufacturer-reported[3]

Available diameters

CAMLOG SCREW-LINE

∅ 3.3, 3.8, 4.3, 5.0 and 6.0 mm.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

∅ 3.3, 3.8, 4.3 and 5.0 mm, colour-coded grey, yellow, red and blue.Manufacturer-reported[3]

Available lengths

CAMLOG SCREW-LINE

9, 11, 13 and 16 mm for ∅ 3.8, 4.3, 5.0 and 6.0 mm; 11, 13 and 16 mm for ∅ 3.3 mm.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

9, 11, 13 and 16 mm for the ∅ 3.3 mm implant; 7, 9, 11, 13 and 16 mm for ∅ 3.8, 4.3 and 5.0 mm.Manufacturer-reported[3]

Narrow implant option

CAMLOG SCREW-LINE

The ∅ 3.3 mm implant is the narrow option and carries only the lower inner thread of the Tube-in-Tube connection.Manufacturer-reported[1]

CONELOG PROGRESSIVE-LINE

CAMLOG describes the ∅ 3.3 mm implant as an alternative for areas with little bone.Manufacturer-reported[3]

The biggest differences

The CAMLOG Tube-in-Tube connection is a 5.4 mm deep implant-abutment engagement with three symmetrically arranged grooves in a 1.9 mm cylindrical bore, which indexes the abutment mechanically rather than relying on a friction cone. CONELOG replaces that with a 7.5 degree cone carrying three grooves and matching cams on the abutment. Both are rotation-locked; they achieve it differently and they are not compatible.

Design

SCREW-LINE is offered at 3.3, 3.8, 4.3, 5.0 and 6.0 mm; CONELOG PROGRESSIVE-LINE at 3.3, 3.8, 4.3 and 5.0 mm, colour-coded grey, yellow, red and blue. CONELOG reaches shorter, listing 7 mm at the three wider diameters, while SCREW-LINE starts at 9 mm. CAMLOG restricts 7 mm implants to conditions set out in its own work instruction, so a 7 mm CONELOG is not a freely available shorter option.

Material and surface

Both are grade 4 commercially pure titanium. SCREW-LINE is offered with the Promote surface, leaving a 1.4 mm machined shoulder, or Promote plus, which extends the treated surface coronally and leaves only 0.4 mm machined. CONELOG PROGRESSIVE-LINE is supplied with Promote plus, running to an acid-etched implant shoulder.

Prosthetic ecosystem

CONELOG has integrated platform switching, because CAMLOG states the abutment does not cover the implant shoulder. On SCREW-LINE we have not recorded platform switching, since the manufacturer documentation we worked from does not describe it. Abutments and abutment screws in the CONELOG range are Ti6Al4V ELI even though the implants themselves are grade 4 titanium — a distinction that occasionally matters when materials are being listed for a patient.

What may influence clinical selection

CAMLOG is unusually direct about the limits of its narrow implant, stating that the 3.3 mm implant has lower mechanical strength than the larger diameters and that this must be taken into account, particularly when it is not splinted to larger implants. That is a more useful statement than the general encouragement most manufacturers offer around narrow fixtures, and it is the kind of manufacturer caution worth asking a clinician about directly.

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.

Sources

Numbers match the citations beside each claim above.

Primary sources

[1]CAMLOG® SCREW-LINE Implant — Basic Information, Surgical Procedures (J8000-0230) — CAMLOG Biotechnologies GmbH, 2017. Accessed 2026-07-21.
[2]CAMLOG Implant System — Surgery — CAMLOG Biotechnologies GmbH. Accessed 2026-07-21.
[3]CONELOG® PROGRESSIVE-LINE Implant — Basic Information, Surgical Procedures (J8000-0240) — CAMLOG Biotechnologies GmbH, 2019. Accessed 2026-07-21.