公开(公告)号：US3146296A

公开(公告)日：1964-08-25

申请号：US23550162

申请日：1962-11-05

Applicant: FISCHER KENNETH J

Inventor： FISCHER KENNETH J

IPC: B60R1/06

CPC classification number: B60R1/0605

公开(公告)号：US3922787A

公开(公告)日：1975-12-02

申请号：US46767574

申请日：1974-05-07

Applicant: FISCHER KENNETH J ,  ORLOWSKI JAN A

Inventor： FISCHER KENNETH J ,  ORLOWSKI JAN A

IPC: A61C7/14 ,  A61C7/12 ,  A61C7/28 ,  A61C7/00

CPC classification number: A61C7/12

Abstract: An all plastic orthodontic bracket is disclosed which is adapted to be attached directly to the labial surface of a tooth. The bracket has a quasi triangular shaped body as viewed from the facial view to minimize forces being applied to the bracket during mastication and occlusion. The apical section of the triangular shaped body is adapted to be attached to the incisal section of the tooth and the base of the triangular shaped body is adapted to be attached to the gingival section of the tooth. All surfaces of the bracket body extending from a ligature undercut over the front surface of the bracket body are smooth and convex with the exception of those surfaces defined by an archwire slot and a second slot which is perpendicular to the archwire slot. Smooth convex bracket body surfaces substantially lessen plastic fatigue commonly found in prior art plastic orthodontic brackets having sharp corners. The ligature undercut is of a depth which is substantially filled by a small gauge archwire or an elastic ring. The relatively shallow depth of the ligature undercut insures that maximum bracket bulk is distributed between the archwire slot and the ligature undercut to lessen the tendency for bracket body fatigue between these points.

Abstract translation: 公开了适于直接附接到牙齿的唇面的全塑正畸托架。 支架具有从面部视图观察的准三角形体，以最小化在咀嚼和闭塞期间施加到支架的力。 三角形体的顶端部分适于附接到牙齿的切口部分，并且三角形体的基部适于附接到牙齿的齿龈部分。 从支架主体的前表面上的底线延伸的支架主体的所有表面均平滑和凸出，但由弓丝槽和垂直于弓丝槽的第二槽限定的那些表面除外。 平滑的凸支架体表面基本上减轻了现有技术中具有尖角的塑性正畸托架中常见的塑性疲劳。 结扎底切的深度基本上由小规格的弓丝或弹性环填充。 结扎底切深度相对较浅可以确保弓形槽与结扎底切之间的最大支架体积分布，以减少这些点之间的支架体疲劳倾向。