Abstract: Tool for actuating palatal expanders, comprising a body (1) with a grip portion (2) and, on the opposite side, a tip (3). The body (1) has, on at least one surface (10) thereof, display means adapted for displaying the number of uses.

Abstract: Orthodontic expander comprising a left frame (T1) and a right frame (T2), wherein said left frame (T1) and right frame (T2) respectively comprise a left body (1) and a right body (2) provided with means for their anchorage to the teeth of a dental arch, wherein said bodies (1.2) have through holes (10) oriented in an expansion direction (d), wherein said frames (T1, T2) are slidingly mounted along said expansion direction (d) by means of guides (4) inserted in said holes (10) of said bodies (1.2), wherein the distance (h) between the said bodies (1, 2) is adjusted by means of a screw (5) screwed into the body (2) of one of said frames, wherein said screw (5) has an operating head (51) positioned between said bodies (1.2), and wherein elastic means (M) are positioned and acting between said frames (T1, T2) and can be activated or reactivated by acting on said screw (5) which compresses them to activate or reactivate them when desired.

Abstract: A surgical guide system for dental implantology has a plate (10) provided with a guide sleeve (2) delimiting a through hole with an axis oriented to a predetermined direction. A drill (4) for osteotomy has a spindle connected to a handpiece with drilling portion (41), the drill (4) being for association with the guide sleeve (2) during osteotomy. The diameter (d41) of the drilling head portion (41) is larger than the inner diameter (d2) of the guide sleeve (2) and the spindle is of smaller diameter, such that the association of the drill (4) to any of the guide sleeves (2) can be performed only by inserting the spindle through a gingival side of the sleeves. Upon association of the drill with the sleeve, the drilling head (41) protrudes from the gingival side (2G) thereof. The surgical guide has a void (100) accommodating the drilling head (41) of the drill.

Abstract: A surgical guide system for dental implantology has a plate (10) provided with a guide sleeve (2) delimiting a through hole with an axis oriented to a predetermined direction. A drill (4) for osteotomy has a spindle connected to a handpiece with drilling portion (41), the drill (4) being for association with the guide sleeve (2) during osteotomy. The diameter (d41) of the drilling head portion (41) is larger than the inner diameter (d2) of the guide sleeve (2) and the spindle is of smaller diameter, such that the association of the drill (4) to any of the guide sleeves (2) can be performed only by inserting the spindle through a gingival side of the sleeves. Upon association of the drill with the sleeve, the drilling head (41) protrudes from the gingival side (2G) thereof. The surgical guide has a void (100) accommodating the drilling head (41) of the drill.

Abstract: Surgical guide system for dental implantology, comprising a plate (10) provided with one or more guide sleeves (2) delimiting corresponding through holes whose axes are oriented according to predetermined directions, and a drill (4) for osteotomy having a spindle that can be connected to a handpiece or similar tool and a drilling head or drilling portion (41), the drill (4) being apt to be associated to each of the guide sleeves (2) during an osteotomy step, the guide sleeves (2) having an occlusal side (2D) and a gingival side (2G).

Abstract: An abutment (2) connects with a fixture (1) by a Morse-taper type coupling, with the installation of a truncated-cone shank (21) of the abutment (2) into a corresponding cavity (11) exhibited by the fixture (1). The abutment (2) is provided with an appendix having a polygonal cross-section (22), and is positioned below the shank (21). The appendix is fitted into a corresponding impression (12) provided in the bottom of the cavity (11) of fixture (1). The abutment is also provided, on the side opposite to the appendix (22), with respect to the shank (21), with a portion (20, 24) intended for supporting a dental prosthesis (D). The appendix (22) can be rotated about its longitudinal axis, relative to the shank (21) of the abutment (2).

Abstract: An orthodontic bracket including a body (1) having a mesiodistal slot (10), a base (11), and a plurality of tie wings (12, 120) mainly developed along an occlusal-gingival direction. The tie wings are provided two-by-two on opposite sides in relation to the slot (10) and partially emerging over a labial side (L) of the body (1). The slot (10) is apt to receive an archwire (2). The tie wings (12, 120) protrude externally from the body (1) and towards the base (11), feature a curved surface (121) whose concavity is turned towards the same base (1) and constitute a support for an element (3) apt to prevent the archwire (2) from coming out of the slot (10). The element (3) features a planar portion intended to slide above, and parallel to, the labial side (L) of the body (1) and a flexible and elastic arm (33) having a portion (34) which is securable to the surface (121) of two tie wings (12) resulting on the same side in relation to the slot (10).

Abstract: Dental implant, comprising an abutment (2) for connection with a fixture (1) by means of a Morse-taper coupling, with the installation of a truncated-cone shank (21) of the abutment (2) into a corresponding cavity (11) exhibited by the fixture (1), the said abutment (2) being provided with an appendix, having polygonal cross-section (22), which is positioned below said shank (21) and to be fitted into a corresponding impression (12) provided in the bottom of the said cavity (11) of fixture (1), the abutment being also provided, on the side opposite to said appendix (22) with respect to said shank (21), with a portion (20, 24) intended for supporting a dental prosthesis (D), the said appendix (22) can be rotated about its longitudinal axis, relative to the said shank (21) of the abutment (2).

Abstract: Orthodontic bracket comprising a body (1) having a mesiodistal slot (10), a base (11), and a plurality of tie wings (12, 120) mainly developed along an occlusal-gingival direction, said tie wings being two-by-two on opposite sides in relation to said slot (10) and partially emerging over a labial side (L) of said body (1), wherein said slot (10) is apt to receive an archwire (2), wherein said tie wings (12, 120) protrude externally from the body (1) and towards the base (11), feature a curved surface (121) whose concavity is turned towards the same base (1) and constitute a support means for an element (3) apt to prevent the archwire (2) from coming out of the slot (10). That said element (3) features a planar portion intended to slide above, and parallel to, the labial side (L) of the body (1) and a flexible and elastic arm (33) having a portion (34) which is securable to the said surface (121) of two tie wings (12) resulting on the same side in relation to the slot (10).

Abstract: Ligature device for orthodontic brackets, consisting of an elastic body with a central portion (5) and two lateral rings (6) positioned on two mesodistal sides of the central portion (5), on opposite sides with respect to the latter, the rings being intended to be stretched to be coupled with the wings (2) of an orthodontic bracket so that the central portion (5) results above the same bracket wings (2), characterized in that the lateral rings (6) form at least a curve (65) corresponding to a mesodistal side of the orthodontic bracket at the height of the wings (2), the vertex of the at least one curve (65) being turned toward the orthodontic bracket, that is to say toward the central portion (5) of the ligature device, the length (a) of each of the rings (6) exceeding the length (c) of the central portion (5) both when the rings (6) are stretched and un-stretched, so that the value of the ratio (a)/(c) is less than one in both the stretched and un-stretched configurations.

Abstract: An abutment (2) connects with a fixture (1) by a Morse-taper type coupling, with the installation of a truncated-cone shank (21) of the abutment (2) into a corresponding cavity (11) exhibited by the fixture (1). The abutment (2) is provided with an appendix having a polygonal cross-section (22), and is positioned below the shank (21). The appendix is fitted into a corresponding impression (12) provided in the bottom of the cavity (11) of fixture (1). The abutment is also provided, on the side opposite to the appendix (22), with respect to the shank (21), with a portion (20, 24) intended for supporting a dental prosthesis (D). The appendix (22) can be rotated about its longitudinal axis, relative to the shank (21) of the abutment (2).

Abstract: Ligature device for othodontic brackets, consisting of an elastic body with a central portion (5) and two lateral rings (6) positioned on two mesodistal sides of said central portion (5), on opposite sides with respect to the latter, said rings being intended to be coupled with the wings (2) of an orthodontic bracket so that said central portion (5) results above the same bracket wings (2), characterized in that said lateral rings (6) form at least a curve (65) corresponding to a mesodistal side of said othodontic bracket at the height of said wings (2), the vertex of said at least one curve (65) being turned toward the orthodontic bracket, that is to say toward said central portion (5) of the ligature device.

Abstract: The present invention refers to a process for making an expansion screw and a screw thus made; the expansion screw (100, 100′) has two bodies (1, 2) that can be spaced apart by acting on the driving portion (6) of a double screw (3) housed within threaded central bores (30) provided in the two bodies (1, 2); each of the bodies (1, 2) has at least one bore (5, 50) parallel to the threaded bore; also provided is at least a hollow cylindrical guide (9) housed within a corresponding pair of parallel bores (5, 50) disposed on the two bodies (1, 2) in facing relationship; inserted in each guide (9) is a pin (4) for sliding therein; each guide (9) is fixed to one of the bodies, while the relevant pin (4) held therein is fixed to the other body, and the sliding of the pin (4) relative to the guide (9) takes place with friction owing to the force exerted upon assembly.

Abstract: The present invention refers to a process for making an expansion screw and a screw thus made; the expansion screw (100, 100′) has two bodies (1, 2) that can be spaced apart by acting on the driving portion (6) of a double screw (3) housed within threaded central bores (30) provided in the two bodies (1, 2); each of the bodies (1, 2) has at least one bore (5, 50) parallel to the threaded bore; also provided is at least a hollow cylindrical guide (9) housed within a corresponding pair of parallel bores (5, 50) disposed on the two bodies (1, 2) in facing relationship; inserted in each guide (9) is a pin (4) for sliding therein; each guide (9) is fixed to one of the bodies, while the relevant pin (4) held therein is fixed to the other body, and the sliding of the pin (4) relative to the guide (9) takes place with friction owing to the force exerted upon assembly.