Resumo

DUARTE-INGUANZO, Sergio; DUARTE-LOPEZ, Aurora; ZAMBRANO, Olga  e  LUENGO-FEREIRA, Jesús A.. Prediction of the individual response to treatment of skeletal Class II malocclusions and their long-term stability. A Case Report. Invest. clín [online]. 2024, vol.65, n.3, pp.369-377.  Epub 13-Set-2024. ISSN 0535-5133.  https://doi.org/10.54817/ic.v65n3a09.

Non-surgical correction of class II skeletal malocclusions begins at an early age, during the growth and development of the jaw. Treatments tend to be relatively long and generate financial commitments for the family. Predicting the success and stability of the results can be helpful for parents who wish to know about the prognosis and make the right decision to start treatment. This work reports the findings of the prediction of the response to treatment of a skeletal class II malocclusion and its long-term stability in a thirteen-year-old male patient. The individual prediction cephalometric model of Baccetti and Franchi was applied. According to this indicator, the treatment of this patient would result in “a great response”. The patient was treated with a Herbst-type fixed mandibular anterior projection appliance, followed by brackets for the final detailing of the occlusion. Sixteen years later, after finishing treatment, the correction of the Class II malocclusion, the overbite and the harmony in the profile with the projection of the mandible forwards are maintained by the increase in the total mandibular length (13 mm), and through the opening of the angle between the ramus and mandibular body from 122° to 128°. In conclusion, the individual prediction cephalometric model applied, particularly in this case report, allowed us to accurately predict the excellent response and stability of the facial, dental and skeletal results of the class II skeletal malocclusion treatment.

Palavras-chave : Class II; Herbst appliance; Baccetti and Franchi model.

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