Abstract
One of the salient aims of orthodontic treatment is to acquire a well-established functional bite. This could be reached through having what is called a “canine guided occlusion”. In this type of occlusion the upper and lower canines guide the bite of the rest of the teeth especially during lateral movements. This aids to attain robust masticatory functions and to secure a convenient environment for the health of the Temporo-mandibular joint. In this study a case with early extraction of a permanent lower canine is presented. The recreation of a “canine guided occlusion” was done by orthodontic treatment. Orthodontic mini-screws were placed in the upper arch and some frictionless mechanics in the lower arch. The canine guided occlusion was finally re-established by moving the lower 1st premolar in place of the lower canine with some modifications in its angulation and vertical position. The creation of a harmonious canine guided occlusion was checked and confirmed before the removal of the orthodontic appliance. The orthodontic treatment of the current case not only aided in establishing “canine guided occlusion” but also helped to enhance the facial appearance of the patient in terms of reducing facial convexity, aligning the teeth and reducing the incisal show at rest.
Highlights
One of the main targets of oral rehabilitations is to establish a synchronized occlusion between the upper and lower teeth
Loss or extraction of any of the four permanent canines can have its detrimental effects on the bite due to the loss of what is named “canine guided occlusion”. In this type of occlusion the contact between the upper and lower canines guides the rest of the teeth during lateral movements in order to avoid any interferences or jerky movements; that may endanger the masticatory apparatus [1]
One of the ways of oral rehabilitation is through orthodontic treatment that aligns mal-aligned teeth and moves the teeth into their correct position
Summary
One of the main targets of oral rehabilitations is to establish a synchronized occlusion between the upper and lower teeth This creates a healthy environment that aids to attain better speech and masticatory functions. One of the ways of oral rehabilitation is through orthodontic treatment that aligns mal-aligned teeth and moves the teeth into their correct position This case report presents a case with an early extracted lower canine and loss of “canine guided occlusion”, where by the aid of orthodontic treatment alone a harmonized occlusion was established; by moving the lower premolar in the place of the extracted canine. The treatment was accomplished through the use of fixed preadjusted edgewise orthodontic appliance (0.022ʺ x 0.028ʺ slot) with Roth prescription, With 2 mini-screws in the upper arch (Figures 4 and 5)
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