Introduction:

Several studies show that disharmonies of the skeleton cause temporomandibular dysfunctions, since the dental occlusion determines the position of the condyles in the glenoid cavity. The requirements of orthodontic treatment includes achieving stable and balanced occlusion, optimal facial aesthetics and healthy functioning of the temporomandibular joint.

Objective:

To describe the results obtained with the twin blocks in patients with class II syndrome, division 1, with temporomandibular disorders.

Methods:

A descriptive study was carried out in the patients who entered the orthodontic clinic of the "Juan Manuel Páez Inshausty" polyclinic, aged between 11 and 14 year old, with class II syndrome, division 1 and temporomandibular disorders, in the period included between February 2017 and January 2018. 8 patients are described, with the analysis of the Helkimo index at the beginning and six months after the basic twin blocks were installed.

Results:

Mild patients predominated with 62.5 % and 87.5 % presented alteration in the temporomandibular joint function. After 6 months of treatment, 7 were found to be asymptomatic and only one patient persisted with alterations in temporomandibular joint function.

Conclusions:

Most patients became asymptomatic six months after treatment with the twin blocks.

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