Ridge Expansion Kit

An instrument system using MAGNETODYNAMICS for horizontal expansion of the alveolar ridge with the OSSEOTOUCH Magnetic Mallet. Available in three configurations — Expander 5, GENOA 3, and Expander Plus 8 — for progressive ridge expansion without bone removal in atrophic and thin-ridge implant cases. Cortical plates are laterally distracted rather than cut, avoiding rotary friction heat during the expansion phase, with a dry surgical field.

Expander 5 contains the five progressive expanders (SPLIT, CUT, EXP1, EXP2, EXP3) for standard expansion on ridges with sufficient bone width. GENOA 3 contains three blades by Prof. Domenico Baldi for controlled access on thin ridges with intact cortical bone, where standard expanders cannot start the sequence. Expander Plus 8 combines both kits for complete clinical coverage.

GENOA, designed by Prof. Domenico Baldi, separates the cortical plates in a controlled manner while limiting bone sacrifice. Unlike piezoelectric cutting (which removes bone during the cut), GENOA enables progressive penetration, controlled cortical opening, and ridge expansion in a single operative sequence using MAGNETODYNAMICS.

Piezoelectric instruments are designed for bone cutting and remove tissue during the split, require continuous irrigation that reduces field visibility, and provide continuous mechanical action without discrete tactile feedback. Magnetic Mallet ridge expansion is progressive without bone removal, avoids rotary friction heat during the expansion phase, runs with a dry surgical field, and provides discrete tactile feedback for assessing cortical elasticity at each step.

Three peer-reviewed sources plus an academic thesis. Crespi (2021) on 38 patients at 5-year CBCT follow-up reported +4.4 mm maxillary ridge width gain, 100% mandibular implant survival, and 95.5% maxillary implant survival. Crespi (2014) on 181 implants reported initial ridge width 2.8 ± 0.7 mm expanding to 7.2 ± 1.7 mm and lower post-operative discomfort vs. manual techniques. A 2025 case series in Minerva Dental and Oral Science (DOI 10.23736/S2724-6329.25.05106-X) provides additional clinical documentation.

It depends on the case. On thin ridges with well-represented cortical bone, GENOA creates the initial controlled access in safety, then the Expander 5 sequence completes the expansion. On ridges with sufficient width, the surgeon can start directly with SPLIT. Expander Plus 8 includes both kits for maximum case-mix flexibility.

Yes to both. Each instrument can be reordered individually. The optional radel tray organizes up to 12 instruments. All instruments are surgical-grade stainless steel, fully autoclavable using standard sterilization protocols.

The OSSEOTOUCH Magnetic Mallet is registered with the U.S. FDA under Establishment Registration 3011922183 and product codes EIS · KDG · GEY (21 CFR 872.4565 / 878.4820). U.S. Agent: Thema USA, New York. The Ridge Expansion Kit instruments thread onto new-generation Magnetic Mallet handpieces and are fully autoclavable.