Introduction:

transverse micrognathism is a dentomaxillofacial anomaly characterized by poor relationships between the dental arches, generally due to the presence of abnormalities of the teeth, maxilla and temporomandibular joints, for which the elastic open activator of Klammt becomes a therapeutic option.

Objective:

to evaluate the treatment of transverse micrognathism with the Klammt elastic open activator.

Methods:

an intervention study of a quasi-experimental type, before and after modality without a control group, was carried out in 2nd grade students of the “Ciro Redondo” School of the Bayamo municipality in the period 2017-2018. The universe consisted of 31 students 2nd grade, all with the diagnosis of transverse micrognathism. The variables studied were: transverse micrognathism, clinical changes, skeletal modifications and correction time. Theoretical, empirical and statistical methods were used to obtain the information and for its processing number (No), percent (%) and the Wilcoxon test were used.

Results:

the posterior crossbite was eliminated in 100.0% of the cases and the maxillary width reached values ​​within the norm in 74.19% of the patients, the anomaly was corrected in 77.42% of the students in the first year of treatment.

Conclusions:

it was shown that, if the treatment were applied to the entire population of the area affected by transverse micrognathism, favorable results would be obtained with a range that could oscillate between 61.09 and 93.75% of effectiveness, which made significant intervention.

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