THE IMPLEMENTATION OF GRAPHIC CONSTRUCTION OF HAWLEY–HERBER– HERBST DIAGRAM
The search of the way of making the individual form of dental arch is still a topical problem in clinical dentistry. Nowadays, there are a lot of different ways and modes of making the individual form of dental arch, having their advantages and disadvantages. The diagram of Hawley–Herber–Herbst based on the anthropometric dependence of the size and shape of upper dentition on the transverse dimensions of three permanent teeth – central and lateral incisors and canine is the most popular to make the express diagnostics of the maldevelopments and deformities of maxillary dental arch form in contemporary dental practice. To make the diagram it is necessary to determine the sum of the transverse dimensions of central and lateral incisors and canine. It is recommended to apply the diagram to the dentition to determine the deviation in the position of teeth and dental arch. Having considered the complexity of the graphic reconstruction of the diagram of Hawley–Herber– Herbst the authors made the software based on the personal original trigonometric substantiation of graphic reconstruction of the diagram to automate its reconstruction. To achieve the goal defined in the study the following objects were accomplished: mathematic substantiation of the implementation of graphic reconstruction of the Hawley–Herber– Herbst diagram was performed, the numerical value of all variables which were necessary to implement the image of the graphic reconstruction of the Hawley–Herber– Herbst diagram was defined and substantiated. The calculations and the construction of graph are in interactive application. The using of software will save the time for the express diagnostics and allow to have valid accuracy of the appropriate size and form of maxillary dental arch.