Alef Ball Attachment System

The Alef ball attachment system retains an implant-supported overdenture with a simple, proven mechanism. A ball abutment (Ø4.0 mm) is screwed onto the Alef implant; a metal housing placed in the denture snaps over the ball, and a silicone cap sets the retention level. This page keeps every part of the system together: ball abutments in all seven heights, the metal housing and the silicone caps, each ordered individually.

Ball abutments

Ball abutments are offered in heights from 1 mm to 7 mm (BA1–BA7). Choose the height according to the soft-tissue thickness so the ball sits just above the gingiva.

Silicone caps and retention

The silicone cap determines how firmly the denture is held. Three retention levels are available: clear for standard retention (BACAP), pink for soft retention (BACAPP) and yellow for strong retention (BACAPY). Caps wear with use and can be replaced at chairside.

Metal housing

The metal housing (BAMH) is processed into the denture base and holds the silicone cap.

Specifications

• Connection: Alef internal hex, Ø3.5 mm platform
• Ball diameter: Ø4.0 mm
• Ball heights: 1, 2, 3, 4, 5, 6 and 7 mm
• Maximum recommended torque: 35 Ncm

How to choose

Select the part you need above: a ball abutment at the required height, a metal housing, or a silicone cap in the retention you need. The reference code for each choice is shown on the variant. The torque is a maximum recommendation and should not replace the clinician’s judgment; adapt it 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

Do I order the parts separately?

Yes. Each ball height, the metal housing and each silicone cap is a separate item on this page.

How do I change the retention?

Replace the silicone cap with a different color: clear is standard, pink is soft and yellow is strong.

Which ball height should I choose?

Pick the height that leaves the ball just above the gingival margin; heights range from 1 to 7 mm.

Where can I find instructions for use?

At eifu.msdi-dental.com.