The External Hexagon SYNUS / TFE is Leader Medica’s gold-standard external hex implant system engineered in Italy and delivered pre-mounted to a sterile titanium mounter. Featuring a polished truncated-cone collar, asymmetrical sawtooth thread ridges, and Body Blade® directional flutes, SYNUS / TFE provides high surgical control, excellent cortical stability in maxillary sinus floor elevations, and maximum restorative flexibility for screw-retained full-arch prostheses.

1. Connection Platform & Sterile Mounter Delivery

• Universal External Hexagon Platform: 2.7 mm wrench flat with a 0.7 mm height on standard diameters, and 2.55 mm on Ø 3.25 mm fixtures. Ensures global component interchangeability for screw-retained prosthetics.
• Pre-Mounted Titanium Sterile Mounter: Pre-assembled to the implant for 100% touch-free aseptic delivery, precise three-dimensional tactile angulation, and immediate handpiece insertion.
• Dedicated Extraction Drivers: Rapid, effortless mounter disengagement using manual driver TDR128C for Synus and TDR12C for TFE.

2. Coronal Collar Morphology & Thread Dynamics

• Truncated-Cone Polished Collar: Machined smooth collar with a height of 1.15 mm (0.5 mm on Ø 3.25 mm) engineered to optimize cortical bone stabilization and mucosal sealing, particularly advantageous in sinus lift procedures.
• Asymmetrical Sawtooth Thread Ridges: Asymmetrical trapezoidal coils efficiently disperse heavy occlusal loads. Thread valley depth increases progressively from the collar to the apex, generating mild peripheral osteodensification in low-density trabecular bone.
• Body Blade® Self-Tapping Grooves: Hook-shaped flutes cut effortlessly through dense cortical plates and maintain the surgeon’s predetermined trajectory in irregular extraction sockets, preventing directional deviation along lines of least resistance.

3. Medical Grade 4 Titanium & DAS® Surface Treatment

• High-Purity Medical Grade 4 Titanium: Unrivaled mechanical fatigue limit certified under European CE Class IIb directives.
• Pure Dual-Acid Etching (DAS®): Pure chemical subtractive treatment ( = 1.35,mu ext{m}$) free from alumina corundum sandblasting residue.
• Argon-Oxygen Cold Plasma Glow-Discharge: Completely purges organic hydrocarbons, maximizing surface wettability and accelerating initial osteoblast adhesion.

4. Step-by-Step Surgical & Drilling Protocol

• Sequential Osteotomy: Marking with a round bur, followed by a Ø 2.0 mm pilot drill at 800–1000 rpm under chilled sterile irrigation, progressing through incremental drills at 600–800 rpm.
• Countersink in Dense Bone: In hard bone (D1/D2), a crestal countersink should be performed to seat the 1.15 mm truncated-cone collar without cortical stress peaks.
• Final Insertion Torque: 35 to 45 Ncm insertion torque via surgical micromotor or manual torque wrench.

5. Restorative & Prosthetic Workflows

• Straight & Angled (15°/25°) Abutments: Anatomic emergence profiles for single and multi-unit cemented prostheses.
• Castable UCLA Abutments: High-precision CoCr/Gold machined base for customized screw-retained restorations.
• Multi-Unit Abutment (MUA) System: Straight, 17°, and 30° angled MUAs engineered for full-arch All-on-4 and All-on-6 rehabilitations.
• CAD/CAM Digital Workflow: Scan bodies and Ti-Bases fully integrated into Exocad, 3Shape, and Dental Wings libraries.

6. Primary Clinical Indications

• Traditional external hex protocols requiring universal component compatibility.
• Screw-retained full-arch full-mouth rehabilitations (All-on-4 / All-on-6).
• Maxillary sinus floor elevations (crestal and lateral approach).
• Immediate extraction socket placement utilizing Body Blade® trajectory stabilization.