Mmf system
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This document provides information about maxillomandibular fixation (MMF) screws used in oral and maxillofacial surgery. It describes the MMF system, including various screw designs that allow for flexible application. The surgical technique for placing the screws and securing wires or elastics is outlined. Product details such as specifications and packaging of MMF screws and related instruments are also included.
Mmf system
- 2. Oral and maxillo-facial surgery is our passion! Its further development, together with our customers, is our ambition. Every day we work on developing innovative products and services which meet the highest demands on quality, and which contribute to the wellbeing of the patient.
- 3. Maxillomandibular Fixation – MMF System Maxillomandibular Fixation (MMF) is one of the most frequent procedures accompanying oral and maxillofacial surgery and it is used routinely for virtually all jaw and midface fractures. Immobilization of the fractured jaw is performed preoperatively (as an immediate measure), intraoperatively (to ensure accurate occlusion and anatomically correct reduction of fragments), or postoperatively (e.g. to introduce the healing process in complex fractures). In rare cases, Maxillomandibular Fixation is still used as a conservative (non-surgical) method of jaw fracture treatment. Maxillomandibular Fixation of the upper and lower dental arches using special self-tapping, bone-supported screws is a rapid and safe method. Placement comfort and less patient damage are considerable benefits for the patient and surgeon, compared to conventional, tooth-supported Erich or Schuchardt resin/arch wire splinting. Screws for Maxillomandibular Fixation MMF System 3
- 4. 4 Maxillomandibular Fixation – MMF System
- 5. 5 Pages Feature, function and benefit 6 - 7 Surgical technique 8 - 9 Product range ■ Implants 10 -13 ■ Instruments 14 ■ Storage and set recommendation 15 Table of Contents
- 6. 666 Maxillomandibular Fixation – MMF System Feature, Function and Benefit A multitude of different lengths and designs of our MMF screws offers a maximum of application flexibility to the user. All the screws are self-drilling. The risk of damaging dental roots is thus reduced as there is no need for pre-drilling. To provide maximum stability, our MMF screws are also offered in steel – in addition to the proven titanium alloy. Due to a rising need for sterile implants the MMF screws are also available sterile-packed, in packs of 2.
- 7. ■ Proven maxDrive® head ■ Predefined, self-centering guide ■ Secure self-retaining mechanism ■ Self-drilling screws ■ Groove under screwhead ■ Hole under screwhead ■ Screws made from stainless steel ■ Screws made from Titanium ■ Sterile-packed scews Note: Not all MMF screws have the above-named features. Feature and Function Benefit ■ Easy screw pickup ■ Easy to pick up again in situ ■ Can be inserted in angular position as well ■ Direct force transmission from bit to screw ■ No pre-drilling ■ Reduced OR-time ■ Risk of damaging dental roots is reduced ■ Secures wires or elastics ■ Maximum stability ■ High biocompatibility ■ Direct, swift and application-oriented access ■ No costs for processing ■ 100% batch traceability 77 MMF Screws
- 8. 8 Surgical Technique Screw Placement Maxilla Based on the fracture type and location, number and position of the MMF screws is determined. In this surgical technique three screws are placed in order to stabilize an anterior mandible fracture. The ideal position is above the teeth roots, one in the midline and one on either side of the midline, posterior to the canine roots. Using the 2.0-mm screwdriver, the screw is directly inserted into the bone; pre-drilling is not necessary. The screw is advanced until the concave shoulder of the screw head is 1 mm from the mucosal surface. The screw may be readjusted for proper alignment of the wire holes contained within the screw head. The procedure is repeated for the other maxillary MMF screws. Screw Placement Mandible Opposite to the maxillary MMF screws, the mandibular screws are inserted. After having exposed the fracture and identified the anatomical structures, teeth roots and mental nerve, the screws are implanted using the 2.0-mm screwdriver. Place screws a distance of 1 cm from either side of the fracture below the roots of the teeth. The screw is advanced until the concave shoulder of the screw head is 1 mm from the mucosal surface. The screw may be readjusted for proper alignment of the wire holes contained within the screw head. The procedure is repeated for the other mandibular MMF screws.
- 9. 9 Wire Application The wires are inserted through the holes of the maxillary and opposing mandibular screws. Alternatively the wires can be wrapped around the wire groove contained within the head of the MMF screw. The number of wires placed, their configuration, and the amount needed to stabilize the occlusion and fracture is determined by the surgeon. Tightening of Wires After having established the occlusion, the wires are tightened. The MMF screws may be advanced further to increase the tautness of the wires. Finally the wires are cut and bent under to prevent soft tissue irritation.
- 10. MMF Screws 10 Product Range with clip magazine Amsterdam MMF Designed in cooperation with: Dr. Bart van den Bergh, VU Amsterdam, The Netherlands without clip magazine maxDrive® MMF Screws Amsterdam MMF Screws Ø Thread Length Total Length Item Number 2.0 mm 8 mm 12 mm 25-092-08-09 2.0 mm 8 mm 12 mm 25-092-08-72 2.0 mm 8 mm 12 mm 25-092-38-05 2.0 mm 8 mm 12 mm 25-092-38-72 2.0 mm 12 mm 16 mm 25-092-12-09 2.0 mm 12 mm 16 mm 25-092-12-72 2.0 mm 12 mm 16 mm 25-092-42-05 2.0 mm 12 mm 16 mm 25-092-42-72 Ø Thread Length Total Length Item Number 2.0 mm 8 mm 12 mm 25-099-12-09 2.0 mm 8 mm 12 mm 25-099-12-72 2.0 mm 8 mm 12 mm 25-099-42-05 2.0 mm 8 mm 12 mm 25-099-42-72 2.0 mm 10 mm 14 mm 25-099-14-09 2.0 mm 10 mm 14 mm 25-099-14-72 2.0 mm 10 mm 14 mm 25-099-44-05 2.0 mm 10 mm 14 mm 25-099-44-72 2 5 5 2 5 2 5 2 2 2 2 2 2 2 2 2
- 11. FAMI MMF – designed in cooperation with: - Lars Erikson D.D.S, Odont D. (Ph.D.), University of Lund, Sweden - Dr. Dr. Rainer Fangmann, MSC, Wilhelmshaven, Germany - PD Dr. Dr. R. Mischkowski, Städt. Klinikum Ludwigshafen, Germany with clip magazine FAMI MMF – designed in cooperation with: - Dr. Dr. Rainer Fangmann, MSC, Wilhelmshaven, Germany - PD Dr. Dr. R. Mischkowski, Städt. Klinikum Ludwigshafen, Germany with clip magazine FAMI MMF Screws FAMI MMF Screws 11 Ø Thread Length Total Length Item Number 2.0 mm 8 mm 10.4 mm 25-097-08-09 2.0 mm 8 mm 10.4 mm 25-097-08-75 Ø Thread Length Total Length Item Number 2.0 mm 8 mm 10.7 mm 25-099-08-09 2.0 mm 11 mm 13.7 mm 25-099-11-09 2 2 2 2 Explanation of icons 2 Titanium Stainless steel Packaging unit maxDrive® Centre-Drive® Cross-Drive Sterile packed implants
- 12. 25-095-90-09 MMF washer, Rome model, short 25-095-91-09 MMF washer, Rome model, long 2/1 2/1 12 Fast-Fix MMF Washer and Arch Bar 1 1 Note: Used in connection with 2.0-mm Centre-Drive®, maxDrive® or Cross-Drive screws Product Range
- 13. 13 1 Erich 38-690-00-07 Arch bar Length: 1 m Explanation of icons 1 Titanium Stainless steel Packaging unit 1/2
- 14. 14 Instruments and Storage 25-407-04-04 Screwdriver handle, only 25-486-97-07 maxDrive® blade 2.0 / 2.3 mm 22-500-11-07 TC wire twister 11-865-12-07 TC wire twister max. Ø = 1.0 mm soft wire 39-311-20-07 Gauze packer 1/2 1/2 1/2 1/2 1/2 1/1 1/1 1/1 1 1 1 1 1 Product Range
- 15. 15 Fast-Fix MMF System 55-961-29-04 2.0-mm MMF module complete, consisting of: 55-962-48-04 MMF module, with red side rails 55-963-47-04 Lid for 2.0-mm MMF module Set Recommendation 25-407-04-04 Screwdriver handle, only 25-486-97-07 maxDrive® blade 2.0 / 2.3 mm 22-500-11-07 TC wire twister 11-865-12-07 Wire scissors 39-311-20-07 Gauze packer 1 1 1 1 1 1 1 Explanation of icons 1 Stainless steel Packaging unit TC instruments with hard-metal inserts
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