| 摘要 |
A device for the orthodontic and/or orthopedic correction in a dental arch. The device includes at least one thrust or traction element attached to a first set of teeth at one end a second set of teeth at an opposite end. The thrust or traction element includes a pair of telescopically engaged elongated members, a pair of stops, and a spring. At least one of the stops can be adjusted in an axial direction of the elongated members to regulate the amount of compression in the spring. The thrust or traction forces are exerted at a level of the basal gingiva and attached to the teeth of the first and second sets as close to the cervical zone as possible. The device permits expansion and contraction of the dental arch in a direction perpendicular to the longitudinal axis of the arch, as well as lengthening and shortening of the dental arch in the longitudinal direction. All the forces generated the by thrust or traction elements are preferably absorbed by and transferred among the teeth in the first and second sets.
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