The purpose of the study is to evaluate the use of a magnetodynamic instrument (Magnetic Mallet®, Metaergonomica, Turbigo, Italy) to perform a horizontal bone expansion in edentulous sites that need to be rehabilitated with a dental implant.

From October 2019 to May 2022, a sample of 15 patients, 11 men and 4 women, age between 39 and 78 years, was analyzed. A total of 18 conical-shaped implants with a diameter of 3.80 mm and a length between 10 and 11.5 mm were inserted in the maxillary region in the area between the lateral incisor and the first upper molar. The patients were treated by two different surgeons.

Inclusion Criteria:

• Patients with maxillary mono-edentulism between the lateral incisor and the first upper molar with a bone crest measuring between 4-6 mm;
• Insertion of conical implants with dimensions 3.80 x > 10 mm;
• Correct occlusal relationships between upper and lower jaw;
• Patients willing to cooperate and follow the instructions given by the clinicians.

Exclusion Criteria:

• Smokers > 15 cigarettes per day;
• Patients with systemic diseases;
• Irradiation to the head/neck region within 12 months prior to surgery;
• Pregnancy or breastfeeding;
• Poor oral hygiene and lack of motivation to return for checkups;
• Edentulous area for less than 1 year;
• Edentulousness of the lower jaw.