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Overbite with aligners, by: Pablo Kehyaian, Diana Pereira, Marcelo Prados, Constanza Cuadrado, Maria Celeste Masciarelli, Paula Alonso Summary Treatment of overbites with clear aligners is perceived as complex due to the patient's natural bite force that aids in posterior intrusion. At the same time, there is a strong relationship between the passive intrusion effect generated by the aligners and the lack of correction of the overbite. This generates an increase in the final treatment time and the need for additional refinement phases. The case of a class I molar and canine patient, anterior crowding, crossbite between teeth 12-42 and 43 and increased overbite is presented. The objective of this report is to analyze the effectiveness of aligners in correcting overbite with leveling of the curve of Spee using the SecretAligner aligner system . Introduction Overbite malocclusions frequently occur in daily consultation; the literature offers figures of between 15% and 20% prevalence in the world population.

Among the movements commonly performed to correct the overbite we find the intrusion of maxillary and mandibular incisors, anterior proclination, posterior extrusion and therefore increase in the height of the lower third. The advantage we have in treating overbites with aligners compared to conventional orthodontic treatment (multibracket technique) is that it is no longer necessary to wait to achieve a certain degree of alignment Japan Telegram Number Data before starting to level the curve of Spee. This is because we can combine so-called synergistic movements that allow us to optimize the force produced by the aligners, reducing treatment time and increasing its predictability. Today we have accessories such as those proposed by Douglas Henick et al, which allow us to optimize the force exerted on the pieces.



An example of this is the pressure areas frequently used for the correction of anterior torque and intrusion movement since these areas allow forces to be generated through the longitudinal axis of the tooth. Preview of the case Another example of attachments that we can use during the treatment of overbite are anterior bite ramps (to generate disocclusion of the posterior sector). These ramps are designed to eliminate the passive intrusion effect generated by the use of aligners while generating intrusion forces on the incisors through natural bite forces. The position of the bite ramp is digitally adjusted to maintain anterior contact during all stages of treatment. It is important to virtually analyze in the dynamic viewer and clinically the presence of permanent contact between the incisal edge of the lower incisors and the ramp surface. Sometimes, as there is no correct contact between them and it becomes contact between the buccal surface of the lower incisors and the ramps, it generates unwanted effects such as an increase in the overjet.
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