THREE-DIMENSIONAL MARKERS FOR AXIOGRAPHY AND INDIVIDUAL VALUES DETERMINATION

Abstract

This invention concerns a set of three-dimensional markers that should be included in the scanning protocol. These markers together with the scanned information of the dental arches allow the transposition of the terminal hinge axis (for axiography) and the determination of the individual values of the condylar guidance angle and Bennett angle (for virtual articulators) to the virtual articulator. This invention involves a marker (4) which has three elements: upper element (1), intermediate element (2) and lower element (3). These components fit together forming a single piece (4), or the elements (19) (17) (18) respectively, in case of edentulous patients that does not allow the attachment, it should be used the spacer (16); and markers (5) (26), which are exclusives for individual values determination.

Claims

1. Set of three-dimensional markers characterized by: a) upper element (1) that has a projection (10) in the upper front area. This projection has two slots (14) on lateral inner sides. It develops into a depression (11), which also presents two slots (14) on the lateral inner side; b) intermediate element (2) and lower element (3), each one having two lateral projections (6) (7) on the upper front area; c) both intermediate element (2) and upper element (1), have two lateral slots (8)(9) on the upper rear area. This slots allow elements (1)(2)(3) to set by sliding and fitting projections (6)(7); d) marker (5) has a two-part symmetrical geometry, each one formed by a projection (12) with two slots (14) on lateral inner area. This slots also develop into a depression and a second projection (13) which also has two slots on lateral inner area; or e) spacer (16) shows the groove (25) at the bottom and has three top grooves (24) These grooves (24) have a lower dimension on the outside of spacer (16) in comparison with the one shown on the inside part of spacer (16) starting at point (27). f) element (19) has an upper groove(28) which has an end with the same length of the slot (24) at point (27). This element also has two lateral projections (20) and two bottom projections (22) that will fit into element (17); g) element (17) presents a top hollow (29) which forms two grooves (21) that fit the projections (22) of the element (19). This element shows at the bottom the same two projections (22) that fit into element (18); h) element (18) has a top hollow (29) which form two grooves (21) that fit the projections (22) of the element (17); i) marker (26) has a projection (12) which has two grooves (14) on the lateral inner side. This projection also develops into a depression and a second projection (13) that also has two slots (14) on the lateral inner area;

2. Set of three-dimensional markers according to claim 1 wherein upper element (1) has 3 mm thickness, intermediate element (2) has 2 mm thickness and lower element (3) has 1 mm thickness.

3. Set of three-dimensional markers according to claim 1 wherein element (1) has a tilted section (15) at the inner end.

4. Set of three-dimensional markers according to claim 1 wherein elements (1)(2)(3) have a semi-ellipse shape at the rear area and a flat shape at the front area.

5. Set of three-dimensional markers according to claim 1 characterized by spacer (16) having a semi-elliptical arc configuration.

Description

FIGURES DESCRIPTION

[0046] FIG. 1—Representation of the spatial localization of mandible/skull relatively to the pure rotation axis.

[0047] FIG. 2—Measurement of the three vertical dimensions.

[0048] FIG. 3—Definition of an anatomical plane.

[0049] FIG. 4—Representation of virtual positioning of the upper jaw relative to the most used anatomical planes: PF—Frankfurt Plane; PC—Camper Plane; PSR—Sanz-Redinha Plane and PO—Occlusion Plane.

[0050] FIG. 5—Representation of the condylar inclination.

[0051] FIG. 6—Representation of Bennett angles.

[0052] FIG. 7—Measurement of protrusive, right and left laterotrusive movements.

[0053] FIG. 8—Marker (4) with all its elements (1) (2) (3) attached where slots (14) can be seen.

[0054] FIG. 9—Marker (4) with all its elements (1) (2) (3) attached where slots (14) can be seen.

[0055] FIG. 10—Marker (4) with all its elements (1) (2) (3) attached where slots (14) and cut (15) are visible.

[0056] FIG. 11—Element (1) where cut (15), slots (14) and hollows (9) can be seen. Hollow (8) is identical to hollow (9) on the symmetrical side of the element (1).

[0057] FIG. 12—Element (4) where elements (1) (2) (3) can be observed separately. Hollows (9) and projections (7) (6) that allow the attachment of various elements are visible. Hollow (8) is identical to (9) on the symmetrical side of the element (1), that is, on same side of projection (7).

[0058] FIG. 13—Marker (5) with projection (12), cavity slots (14).

[0059] FIG. 14—Inside view of spacer (16) in upper position with elements (17) (18) (19) fitted in central position.

[0060] FIG. 15—Outside view of spacer (16) in upper position, with elements (17) (18) (19) fitted in central position.

[0061] FIG. 16—Spacer (16) in upper position where elements (17)(18)(19) can be seen separately and projections (20)(21) and slots (22) are visible.

[0062] FIG. 17—Spacer (16) in bottom position where elements (17)(18)(19) can be seen individually and projections (20)(21) and slots (22) are visible.

[0063] FIG. 18—Inside view of spacer (16) in bottom position with elements (17)(18)(19) fitted in central position showing projection (23).

[0064] FIG. 19—Outside view of spacer (16) in bottom position with elements (17)(18)(19) fitted in central position showing projection (23).

[0065] FIG. 20—Spacer (16) where slots (24)(25) are visible.

[0066] FIG. 21—Top view of groove (25) on spacer (16).

[0067] FIG. 22—Spacer (16) with marker (26) on upper left position.

[0068] FIG. 23—Spacer (16) with marker (26) on upper central position.

[0069] FIG. 24—Spacer (16) with marker (26) on upper right position.