Abstract: A marginal ridge attachment plate slides onto the center tab of a height gauge to provide more accurate orthodontic bracket placement. In use, vertically-extending legs on the attachment plate rest on mesial and distal marginal ridges of the tooth. The plate is shaped so that while the legs rest directly on the marginal ridges, a cut-out portion between the legs avoids contact and interference from the inward-facing slopes of the tooth cusps. Therefore, correct bracket height is measured with reference to the marginal ridges of the tooth rather than the tooth cusp.

Abstract: A marginal ridge attachment plate slides onto the center tab of a height gauge to provide more accurate orthodontic bracket placement. In use, vertically-extending legs on the attachment plate rest on mesial and distal marginal ridges of the tooth. The plate is shaped so that while the legs rest directly on the marginal ridges, a cut-out portion between the legs avoids contact and interference from the inward-facing slopes of the tooth cusps. Therefore, correct bracket height is measured with reference to the marginal ridges of the tooth rather than the tooth cusp.

Abstract: An orthodontic height hand gauge is both double-ended and double-sided, allowing four measurement heights to be determined by a single tool. Each end of the gauge has a rotatable element capable of rotating and stopping at zero degrees, 45 degrees, and 90 degrees from the handle axis by a plunger mechanism which provides a detent function. Rotatable ends provide proper gauge alignment to the tooth, especially for difficult-to-reach teeth in the back of the mouth. A center tab extends longitudinally from each rotatable element and is separated by a given distance from top and bottom legs which extend parallel to the center tab. The distances between the center tab and the legs are two different gauge heights to be measured. Thus, by using both ends of the tool, four gauge distances can be measured.