Alef Lock Attachment System

The Alef lock attachment system is a low-profile overdenture retention system. A lock abutment (Ø3.85 mm) is screwed onto the Alef implant, a metal housing is processed into the denture, and a silicone cap provides retention. Because the profile is low, the system works well where vertical space is limited. This page keeps the whole system together: straight lock abutments, angled lock abutments for non-parallel implants, and all the housings, rings and caps, each ordered individually.

Straight lock abutments

Straight lock abutments (LOCK05, LOCK1–LOCK6) are offered in heights of 0.5 to 6 mm to match the soft-tissue thickness. Select the height that places the top of the abutment just above the gingiva.

Angled lock abutments

Where implants are not parallel, angled lock abutments restore a common path of insertion. The 18° version (ALOCK181–ALOCK184) is offered in collar heights of 1 to 4 mm, and the 30° version (ALOCK301–ALOCK303) in collar heights of 1 to 3 mm.

Caps, ring and housing

Silicone caps come in four retention levels: extra soft (yellow, LOCKES), soft (pink, LOCKSO), standard (clear, LOCKST) and strong (purple, LOCKSG). Caps are consumables and can be replaced at chairside as retention decreases. The metal housing (LOCKMH) and the silicone ring (LOCKRI) are available as separate parts.

Specifications

• Connection: Alef internal hex, Ø3.5 mm platform
• Abutment diameter: Ø3.85 mm
• Straight heights: 0.5, 1, 2, 3, 4, 5, 6 mm
• Maximum recommended torque: 35 Ncm

How to choose

Select the straight or angled abutment and its height or collar above, or choose a housing, ring or cap. The reference code for each choice is shown on the variant. Torque values are maximum recommendations and should not replace the clinician’s judgment; adapt them to clinical conditions, bone quality and the patient’s specific situation.

Regulatory

MSDI products meet the highest standards set by the FDA, CE MDR, ISO 13485 and other regulatory bodies. Disclaimer: some products may not have regulatory clearance for sale in specific territories. Please read the instructions for use (IFU) before use.

Frequently asked questions

Which cap color is which retention?

Yellow is extra soft, pink is soft, clear is standard and purple is strong.

What do I use for non-parallel implants?

The 18° and 30° angled lock abutments.

Which parts do I need besides the abutment?

A metal housing, a silicone ring and a cap. Each is a separate item on this page.

Where can I find instructions for use?

At eifu.msdi-dental.com.