Header L1 MI Orthognathics

Titanium osteosynthesis

L1® MI Orthognathics

Congenital or acquired dysgnathia is a phenomenon that is not uncommon – about one in ten are affected. Dysgnathia is usually accompanied by disharmony of facial appearance and functional impairment. Elimination of skeletal discrepancies by corrective orthognathic surgery can achieve functional improvements of occlusion, respiration and airway. 

The IPS CaseDesigner® makes 3D virtual surgical planning easier and faster than ever before. With this flexible software tool, planning and simulating surgical interventions become efficient and reliable.

L1® MI Orthognathics comprises of instruments and implants that were specially developed for minimally invasive orthognathic surgery. Consequently, the user has at his or her disposal a standardized solution for MI Le Fort I, MI Sagittal Split and MI Chin osteotomy. To ensure a safe and reproducible procedure the instruments are arranged using sequence templates and then they are used step by step.

The entire procedure is based on Prof. Dr. Dr. Gwen R.J. Swennen's many years of experience. Maxillofacial and Facial Plastic Surgery, AZ St-Jan, Bruges, Belgium.


L1® MI Orthognathics is especially used for minimally invasive osteotomy in orthognathic surgery.

Planning process

With our IPS CaseDesigner®, orthognathic case planning can be performed user- or developer-based. The created virtual planning forms the basis for the possible design of drill and marking guides as well as implants.

With developer-based case planning, your requirements are implemented as a service, without any software installation required for you, by one of our developers and the virtual planning is created. It forms the basis for the possible design of drill and marking guides as well as implants. Throughout the process, IPS Gate® serves as a web-based platform for easy and efficient communication between clinical users and our developers.

Alternatively, planning can also be based on a lateral X-ray and cephalogram and is implemented with minimally invasive surgery.

Coding system

L1® MI Orthognathics is primarily an instrument set that has been explicitly developed for minimally invasive treatment of deformities in the maxilla, mandible and chin.

To restrict the instrument set to essentials, all the instruments are split up into logical groups and coded. Using sequence templates the instruments required for MI Le Fort I, MI Sagittal Split or MI Chin osteotomy are arranged according to the sequence of the surgical procedure. 

L1® MI Orthognathics sequence templates

The individually coded instruments are positioned at exactly the point indicated by the code sequence of the sequence templates.

Therefore, the entire procedure is standardized for all process participants, thus making it safer, more reproducible and ultimately more efficient.

Instruments and storage containers

L1® MI Orthognathics instruments

L1® MI Orthognathics instruments are specially designed to suit anatomical situations in the midface and mandible. On the one hand, special instruments were developed to be able to treat patients with reduced approaches in a soft tissue-sparing manner. On the other hand, a second objective was to use the instruments to create cavities that are large enough to allow safe treatment.

L1® MI Orthognathics storage container

The storage container of the L1® MI Orthognathics system is based on the proven honeycomb design, which reduces weight, ensures high strength, and features large openings for optimized reprocessing. Each instrument has its own unique assigned place. The instruments are stored in drawers that are split up into defined groups. Consequently, access is bound to be swift with no risk of confusion. In addition, transparency is thus improved and the amount of space required in the sterile area is reduced. The design of the storage container also facilitates complete refilling of the set after the operation.

Standard implants

L1® MI Orthognathics standard implants

Both Level One 1.5/2.0 and Arnett system titanium osteosynthesis plates offer specialized implants for this particular discipline. Additionally, there is also the option of using patient-specific implants.

To meet the requirements of L1® MI Orthognathics, the standard implants have been adapted to suit relatively small approaches where necessary.

IPS Implants® MI Orthognathics

The minimally invasive transfer of the virtual planning to the operating room takes place via the bilateral patient-specific drill and marking guide. The integrated intermediate or final split pin ensures optimal positioning. This allows the Le Fort I osteotomy line to be precisely marked and the screw holes to be pre-drilled paranasally with the integrated steel sleeves.

The IPS® implant, based on the patient's individual CT data, thus has the best possible fit and ensures the individual correction of the spina nasalis anterior (nasal spinous process). Suture holes are used to fix the nasal septum.

Required osteosynthesis accessories

For surgical treatment with IPS Implants® MI Orthognathics the following osteosynthesis accessories are required:

  • Sufficient number of KLS Martin osteosynthesis screws in the planned diameters and lengths
  • A screwdriver suitable for the planned osteosynthesis screws
  • A predrill suitable for the planned osteosynthesis screws

Surgical techniques

MI Le Fort I osteotomy

MI Sagittal Split osteotomy

MI Chin osteotomy

Training offers

We offer a wide range of training around our L1® MI Orthognathics concept. Details on the various modules and dates can be found in the overview. In addition, our sales team is at your disposal for on-site appointments.

To the event overview


AlAsseri, N., Swennen, G. Minimally invasive orthognathic surgery: a systematic review. International Journal of Oral & Maxillofacial Surgery, 2018.

Swennen, G. Surgical efficiency and minimizing patient morbidity by using a novel surgical algorithm in orthognathic surgery. Atlas of the Oral & Maxillofacial Surgery Clinics, 2020.

Legal basis for IPS Implants®

According to the regulations of the MPG (Medical Device Act) §3 Sentence 8, a custom-made product is a medical device manufactured on prescription according to specific design specifications and which is intended for the exclusive use for a named patient. For this reason a separate inquiry is necessary in every case.

The written prescription is a release for the technical offer (design of the products). This is to be submitted in writing by the user at the same time as the required order for the economic offer if he/she agrees with the desired case planning.

Shipment is not permissible as a matter of principle without this mandatory regulatory document.

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