The External Hex interface is the most established connection system on the market, and the preferred choice for many training institutions and top-end users. Many clinicians worldwide continue to prefer the External Hex for its ease of use, widespread availability, long history of clinical success, and from mere personal preference. 

It is also known to be more "forgiving" in situations of impassive fit or implant divergence. Southern Implants has therefore continued to refine its External Hex range, to provide its loyal supporters with exceptional reliability alongside proven modern features.


Macrodesign has been carefully optimised through body shapes, thread profile, cutting flutes, and a wide range of diameters and lengths. All implants feature the Southern Implants moderately rough Alumina blasted-surface (with over 15 years of proven clinical success), and selected sizes are available with the Machined Surface Coronal (MSc) hybrid roughness, indicated for patients at high risk of thread exposure or infection. A smoother collar of specific roughness provides proven resistance against peri-implantitis, and many platform-switch options are available. For those desiring the best of both worlds, Southern Implants also offers an external hex-internal drive option.

The connection geometry makes many variations of implant body possible, including Co-Axis™ and MAX options, as well as standard-diameter and -length implants with cylindrical or tapered bodies. The external hex connection is also used on specialised osseointegrating fixtures such as the ultra-short, zygomatic and oncology implants, making this the most versatile interface type on the market.

Surgical and Prosthetic Benefits

  • Classic, trusted connection with sought-after modern features
  • Forgiving interface
  • Good all-round stability with any prosthetic design
  • Widest range of prosthetic options for treatment of single tooth, partial or full edentulism
  • Expansive range of body shapes, lengths, diameters, platform angulations and specialised designs
  • Widespread use and availability

Technical Facts

  • Standard implants available in 3.0mm (MSc only), 3.25mm, 3.75mm, 4.0mm, 5.0mm and 6.0mm diameters, lengths 6-20mm, tapered or cylindrical body shapes
  • Co-Axis™ implants available in 4.0mm, 5.0mm and 6.00mm diameters, lengths 8.5-18mm, platform angulations of 12°, 24° and 36°
  • MAX implants available in 6.0mm (MSc only), 7.0mm, 8.0mm and 9.0mm diameters, lengths 7,9 and 11mm
  • Moderately rough surface with 15 years of clinical evidence
  • Also available with Machined Surface Coronal (MSc) hybrid surface for easier coronal debridement

Downloadable Documents


For further detailed information about the External Hex Implant, please see the documents made available below for your reference.

External Hex Catalogue Download
Southern Implants Product Brochure Download