US3593421A

US3593421A - Multihelical omniarch

Info

Publication number: US3593421A
Application number: US683405A
Authority: US
Inventors: Allen C Brader
Original assignee: Individual
Current assignee: Individual
Priority date: 1967-11-15
Filing date: 1967-11-15
Publication date: 1971-07-20
Anticipated expiration: 1988-07-20

Abstract

A resilient arch form structure characterized by helices formed integrally therewith. The helices are pitched and may be interspersed integrally within the arch form structure or may be continuous within the arch form structure such as a continuous wire, plastic form or the like. The arch form is operatively connected with a tooth for delivering a force simultaneously in at least three planes of space and also enabling force application in the form of torsion or torque to achieve position changes in the tooth root.

Description

0 United States Patent 1 13,593,421

[72} Inventor Allen C. Brader 2,959,856 11/1960 Gurin 1. 32/14 1305 Hamilton 81., Allentown, Pa. OTHER REFERENCES ml P 'AMERlCAN JOURNAL or ORTHODONTICS, Page 8, 221 Filed Nov. 15,1967 D [963 v l 49 12 4s 1 Patented July 20, 1971 Primary Examiner--Robert Peshock Attorneys-Clarence A. OBrien and Harvey B. Jacobson [541 MULTIHELICALOMNIARCH 10 chains 24 Drawing Figs' ABSTRACT: A resilient arch form structure characterized by {52] [1.8.0 .1 32/14 A helices f d integrally therewith The helices are pitched Cl 7/00 and may be interspersed integrally within the arch form strucl PW Sflld! 32/14 ture or may be continuous within the arch form structure such as a continuous wire, plastic form or the like. The arch form is [56] Rekmm cued operatively connected with a tooth for delivering a force UNITED STATES PATENTS simultaneously in at least three planes of space and also 3,052,081 9/1962 Wallshein 32/14 X enabling force application in the form of torsion or torque to 2,305,916 12/1942 Atkinson 32/14 achieve position changes in the tooth root.

PATENTEDJUQOIQH 3593421 SHEET 1 OF 3 Fig-.5 58

Fig.6

7//// Ill! Allen 6. Brader INVENTOK.

PATENTEUJULQOIQYI 3.593421 SHEET 3 BF 3 Allen 6. Bmaer m MWWEMM MULTIIIELICAL OMNIARCH The multihelical omniarch of the present invention is a component employed in an orthodontic appliance system in the form of an arch form structure characterized by helices formed integrally within a continuous resilient arch form structure such as wire, plastic form or the like.

Existing arch materials consist for the most part of metal wires having looped deformations formed therein to store energy and release forces over protracted intervals with low load deflection rates. The leverage of such loops may be increased by lengthening the span of wire between the points of attachment on the teeth which increases the range of activity and diminishes the load. A relatively light force applied continuously over a long range of distance represents the most desirable conditions for the movement of teeth. Presently known arch forms are designed and constructed to operate simultaneously in at least two planes of space. However, the problems of achieving alignment of malposed teeth exist within a three-dimensional concept or in three planes. A fourth direction of force application required is that of torsion or torque to achieve tooth root position changes. The socalled edgewise system of orthodontic appliances was specifically constructed to attain such a function. It is well known that round wires present special problems of torque force application for obvious reasons. However, small diameter round wires are desirable for general orthodontic uses because the wire generated stresses can be a cubed function of the wire diameter in certain force directions.

Accordingly, the object of the multihelical omniarch of the present invention is to provide within a single construction, the possibility of delivery of forces a low magnitude in all three dimensions simultaneously and also permit torque forces to be delivered without change of wires. This construction saves the patient and the operator time and cost and enhances the convenience of an orthodontic appliance. This construction also approaches optimum conditions for force control and force delivery by virtue of its differences in construction from existing arch wires.

The multihelical omniarch may be machine constructed for providing an inexpensive supply of prefabricated components of orthodontic appliance systems, is compatibly applicable with existing orthodontic systems which employ many different dental bracket configurations, is compatibly applicable by additions of integral arch form attachments with dental attachments of various constructions, may produce a wide range of forces of varied extent and duration by varying the number of helices to meet the wide range of desirable tooth movements encountered in human dental malocclusion, may produce a wide range of forces by varying the diameter of the helices, may be manufactured within a range of wire diameters yielding various ranges of forces, may be segmental (partial for two or more teeth) or include attachment with all the teeth of a given arch, variable in construction with the helices pitched, interspersed or close wound, permits torque between selected locations on the total arch form, may yield a wide range of measurable forces by employing combinations of variables of wire diameter, wire temper, number of helices, helix diameter, pitch or the like to enable tabulation of the measurable quantities to reduce empirical orthodontic procedures, may act in three planes simultaneously, permits fabrication of arches custom constructed to optimally solve specific problems of dental malposition, saves the time of multiple arch wire construction for dental malposition problems, provides customized constructions for solving individual cases of dental malposition and otherwise is well adapted for its intended purposes.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

FIG. I is a perspective view of the basic general linear form of interspersed pitched multihelices formed in and along a single wire;

FIG. 2 is a group perspective view showing the form of FIG. I curved and engaging conventional edgewise brackets on several adjacent teeth and illustrating the ligature wire tie employed therewith;

FIG. 3 is a perspective view ofa variation of the basic linear form with integral arch form attachments added thereto along straight inter-helical sections;

FIG. 4 is a perspective view disclosing the structure of FIG. 3 engaging cooperative dental attachments along several adjacent teeth;

FIG. 5 is a plan view of an open wound wire with pitched, interspersed multihclices;

FIG. 6 is a wire with close wound interspersed multihclices;

FIG. 7 is a fragmental view of a multihelical arch form attached with ligature wire to a conventional orthodontic bracket ofthc edgewise type;

FIG. 8 is an exploded view of the construction of FIG. 7;

FIG. 9 is a fragmental view of a multihelical arch form with integral arch form attachments engaged in cooperating dental attachments, in situ;

FIG. I0 is an exploded view of the construction of FIG. 9 illustrating the capacity of the device for storing energy in torsion;

FIG. I1 is a top view ofa curved multihelical arch form construction conformed to an ellipse for direction application to the human dentition and is preferred for the maxillary dentitron;

FIG. 12 is a plan view illustrating a parabolic variation of the construction of FIG. II and is useful in conjunction with the mandibular dentition;

FIG. 13 is a side perspective view of the construction of FIG. ll illustrating the curvature of the construction and the vertical plane of space;

FIG. 14 is a side perspective of the construction of FIG. 12;

FIG. 15 is a plan view illustrating a sectional form of the helices illustrating potential use in only part of the dental arch with or without integral arch form attachments;

FIG. 16 is a group perspective view of portions of a multihelical arch form in which square and rectangular cross sections of wire may be employed;

FIG. I7 is a plan view of an independent multihelical arch form in which a continuous coil spring with spacing between the turns of the resilient material is employed;

FIG. 18 is a plan view of an arch form similar to FIG. 17 but with a core wire associated therewith;

FIG. I9 is a plan view of the construction of FIG. 18 with multiple arch form attachments mounted thereon;

FIG. 20 is an exploded group perspective view illustrating the association of the arch form attachments to the helical wire and core wire;

FIG. 21 is a sectional view of the arch form attachment;

FIG. 22 is a plan view of the arch form wire without a core wire with arch form attachments anchored from the interior of the helices;

FIG. 23 is a perspective view-of the arch fonn attachment employed in FIG. 22; and

FIG. 24 is an end view of'the arch form attachment illus trated in FIG. 23.

FIGS. 1 and 2 in the drawings illustrate the basic linear form of the multihelical omniarch generally designated by numeral 30 and includes a single wire 32 interspersed with pitched multihclices 34 formed in and along the wire 32. In use, as illustrated in Fig. 2, the arch form is attached to the teeth 36 by conventional edgewise brackets 38 which are attached to the teeth 36 by the usual bands 40 or by any other means. A conventional ligature wire 42 is employed for securing the wire 32 to the edgewise bracket 38 in a conventional manner as illustrated in Fig. 7. The ligature wire ties 42 are conventional and serve to secure the straight sections of the'wire 32 in the conventional edgewise brackets 38.

FIGS. 3 and 4 illustrate another type of multihelical omniarch 44 including a single wire 46 having interspersed pitched multihelices 48 formed in and along the single wire. In this construction, arch form attachments 50 are formed integrally, such as by molding thereon, along straight sections of the wire between the helices 48. This construction is attached to the teeth 52 by cooperative dental attachments 54 attached to the teeth by a suitable band 56 or the like thus providing integral arch fonn attachments for anchoring to the teeth.

Fig. illustrates a construction in which the single straight wire 57 is provided with interspersed open wound multihelices 58 while Fig. 6 illustrates a single wire 60 having a plurality of spaced close wound helices 62.

Fig. 7 illustrates the manner in which the single wire is attached to the dental bracket 38 with the ligature wire 42 and Fig. 8 illustrates a view of an exploded nature but with the straight section of the wire 32' being centrally located within the coils of the helices 34' rather than the straight section being disposed along a common line at one edge ofthe coil as illustrated in FIGS. 1, 2 and 7.

FIGS. 9 and I0 illustrate the structure of FIGS. 3 and 4 associated with a tooth and the dental attachment with Fig. I0 illustrating the torsional force or capacity of the device to store energy in torsion in order to exert or deliver a torsion or twisting force on the tooth 52 in order to change the tooth root position which is a necessary requirement in some malpositions.

Fig. ll illustrates the general basic form of the invention 60 which includes a straight wire 62 and interspersed multihelices 64 which is curved and confonns with an ellipse of 45 for direct application to the human dentition. The curvature in the form of an ellipse renders the structure such as the embodiment of Fig. I useful primarily with the maxillary dentition. Fig. I3 illustrates the curvature in the vertical plane of space of the elliptical curvature which is also useful in delivering a controlled and directed force to the teeth.

FIGS. 12 and I4 illustrate another embodiment of the invention which is a parabolic variation generally designated by numeral 66 including straight wire sections 68 and interspersed multihelices 70 which is primarily useful in the mandibular dentition and has curvature in a vertical plane as illustrated in Fig. 14. The parabolic form of the multihelical arch form as illustrated in FIG. I2 is y=4ax. In the elliptical form of the arch form illustrated in FIGS. II and I3, the generic equation is x/a+y'/b=l FIG. illustrates three sectional forms of the invention including a first embodiment 72 including straight wire sections 74 and interspersed multihelices 76, a section 78 including straight wire sections 80 and multihelices 82 with integral arch form attachments 84 thereon in which the helices are open wound or an arch form 86 having straight sections 88 with arch form attachments 90 thereon and multihelices 92 which are close wound. These sectional forms are employed for use in only part of the dental arch with or without the integral arch form attachments. FIG. 16 illustrates two embodiments of the

arch form

94 and 96 which are square and rectangular respectively in cross-sectional configuration with it being understood that any of the arch forms disclosed may be constructed of a single wire of such cross-sectional configuration with or without the arch form attachments.

FIG. 17 illustrates an independent arch form I00 in the form of a continuous coil spring 102 with spacing between the turns of the resilient material thus forming a pitched coil. FIG. I8 illustrates an arch form 104 in the form of an independent continuous coil spring 106 similar to the structure illustrated in FIG. 17 but with a core wire I08 disposed therein. The core wire 108 will effectively control the parabolic or elliptical shape of the coil with it being pointed out that the construction illustrated in FIGS. I7 and 18 may be constructed either in the form ofan ellipse or parabola. FIGS. I9, and 21 illustrate the construction of FIG. I8 combined with arch form attachments I10 to engage and fit on the outside of the coil spring I06. The arch form attachment [10 includes a cylindrical member I12 integral with a base 114 connected to a tooth by use of a band or the like. The cylindrical member H2 is provided with internal helical grooves and ridges 116 which enable the arch form attachment 0 to be rotated around the helix of the spring I06 like a nut onto a screw to a desired adjusted position in relation to the helix and in relation to other attachments where appropriate. By increasing or decreasing the number of turns of the arch form 104 between sites of dental attachments, energy may be stored by compression or extension or may simply be controlled by fixation and the distance between the teeth.

FIGS. 22- 24 illustrate the arch form illustrated in FIG. I7 combined with arch form attachments I18 which are engaged interiorly of the continuous coil spring 102. The arch form attachment I I8 includes a cylindrical portion I20 and a base 122. The cylindrical member 120 is provided with angulated fins I24 to fit inside of the helical coil spring with the fin performing a capstan function. The arch form attachment I I8 may be rotated to a selected position using the inside diameter of the helices for a threading operation so that the position of the arch form attachment along the coil spring may be selected for each individual requirement.

As illustrated, the number of helices in the arch form may be varied, the spacing of the helices may be varied and the diameter thereof may be varied. Generally, any odd number from one to l I separate helical windings is possible. Diameters of the helices may vary and the diameter selected must represent a compromise between the maximum length of wire possible to locate between teeth and the limit of bulk and the scqucllae of tissue irritation to gums and lips. The arch form may be segmental or sectional or may be a complete elliptical or parabolic arch. The helices may be pitched or open wound or close wound helices. The pitched or open wound helices can react to extension or compression in the horizontal plane of space while the close wound helices can react only to extension. The integral arch form attachment may be rotated about the longitudinal axis of the wire l80 or 360 or multiples thereof before attachment with the dental attachment. Thus, the other dental attachments on the arch form resist reciprocally and result in torquing movement at the arch form attachment or section of the wire associated therewith. Various combinations may be employed as long as the number of resistance units exceeds the number of units to be torqued. A tooth will be influenced toward a predetermined position as a preselected optimum in one, two, or three planes of space simultaneously. The resilient reaction of the arch form to the deformation incorporated therein plus time permits tissue changes which result in tooth movements toward the original undeformed shape of the arch form thus ironing out" tooth positions toward predetermined positions of optimum appearance and function. When a fixed relationship is established on the arch form for the attachment of a tooth by use of a dental attachment, bodily movement of the tooth and root becomes possible in contradistinction to a tipping movement of the tooth crown portion only. Thus, with the square or rectangular shape of the arch form and the integral arch form attachment will effect bodily tooth movement where such is preferred over tipping movement which is usually desired.

What I claim as new is as follows:

I. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being formed in spaced groups interspersed along the length of said resilient member, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth.

2. The arch form as defined in claim I wherein said helices in each group are open wound with space between each convolution thereof.

3. The arch form as defined in claim I wherein said helices in each group are close wound with the convolutions in each group being in contact.

4. The arch form as defined in claim 1 wherein said arch form attachments are integrally molded on said resilient member intermediate said groups of helices.

5. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being continuous from end to end of said resilient member with the convolutions thereof being spaced, a core wire disposed within the helices and defining a longitudinal axis thereof for controlling the curvature of the arch form, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth.

6. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being continuous from end to end of said resilient member with the convolutions thereof being spaced, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth, said arch form attachments having an aperture therethrough, said aperture having spiral groove means therein threadedly engaged with the continuous helices for adjusting the position of the arch form attachments in relation to the arch form.

7. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being continuous from end to end of said resilient member with the convolutions thereof being spaced, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth, said arch form attachments having a cylindrical portion, a base adapted to be connected to a dental attachment, and an angulated fin connecting the base and cylindrical portion, said cylindrical portion disposed interiorly of the continuous helices with the tin disposed between adjacent convolutions thereof for adjusting the position of the arch form attachments by rotating them in relation to the resilient member.

8. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having at least one helix incorporated unitarily therein capable of delivering force in three planes of space, and also torque forces for bodily moving malposed teeth, said resilient member being a wire of noncircular cross section to facilitate delivery of torque forces to a dental attachment to which the arch form is operatively connected by an arch form attachment.

9. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said arch form being formed into an elliptical curve and provided with a curvature in a vertical direction from the center thereof toward each free end for association with a human dentition.

10. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivery force in three planes of space and also torque forces for bodily moving malposed teeth, said arch form being formed into a parabolic curve and provided with a curvature in a vertical direction from the center thereof toward each free end for association with a human dentition.

Claims

1. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being formed in spaced groups interspersed along the length of said resilient member, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth.

2. The arch form as defined in claim 1 wherein said helices in each group are open wound with space between each convolution thereof.

3. The arch form as defined in claim 1 wherein said helices in each group are close wound with the convolutions in each group being in contact.

7. An arch form as a component of an orthodontic appliance system comprising a continuous resilient member having a plurality of integral helices incorporated unitarily therein capable of delivering force in three planes of space and also torque forces for bodily moving malposed teeth, said helices being continuous from end to end of said resilient member with the convolutions thereof being spaced, and arch form attachments connected to the resilient member to deliver stored energy from the resilient member to a dental attachment on a tooth, said arch form attachments having a cylindrical portion, a bAse adapted to be connected to a dental attachment, and an angulated fin connecting the base and cylindrical portion, said cylindrical portion disposed interiorly of the continuous helices with the fin disposed between adjacent convolutions thereof for adjusting the position of the arch form attachments by rotating them in relation to the resilient member.