Distractor, bone screw for said distractor, and method for producing said distractor

A distractor for palatal expansion, comprising:

• an expansion part that has at least two expansion elements spaced apart from each other that are adjustable along a longitudinal axis and
• two anchoring parts that are each fastened to a respective expansion element, wherein each anchoring part of the two anchoring parts that is divided into two subsections by the longitudinal axis has at least one palate rest and at least one tooth support in each of the two subsections,
• wherein each palate rest of the at least one palate rest has a support surface for contacting a palate and at least one through hole provided in a region of the support surface to accommodate a fastening element for anchoring to a palatine bone of the palate,
• wherein each tooth support of the at least one tooth support has a first contact surface for contacting at least a portion of a palatal side surface of a tooth and a second contact surface for contacting at least a portion of an occlusal surface of the tooth, wherein the second contact surface overhangs the first contact surface and forms an occlusal tooth rest, in order to thus position the support surfaces against the palate,
• wherein each of the two anchoring parts has at least two tooth supports and wherein each subsection has at least one of the tooth supports and at least one of the palate rests to which this tooth support is connected in order to thus fix the support surfaces in their position against the palate, and
• wherein in each anchoring part, each of the at least one tooth support is connected to the palate rests by a shared connector piece, and the connector piece splits into two legs, which each adjoin a palate rest of the at least one palate rest.