Leczenie wady zgryzu kl. II u pacjentki w wieku dojrzewania za pomocą połączenia zmodyfikowanego aparatu Twin Block ze stałym aparatem ortodontycznym
Discussion
Treatment with functional appliances has several well-established advantages. In this case functional appliance treatment caused reducing overjet, patient’s profile improvement, and taking care of jaw discrepancies. What is more, the patient’s confidence improved and the risk of trauma to the upper incisors was minimized (1).
The selection of functional appliances is dependent upon several factors which can be categorized into the patient factors, for example, age and compliance, and clinical factors, for example, preference/familiarity and laboratory facilities (14). Twin Block functional appliance has several advantages including the fact that it is well tolerated by patients (15), being robust, easy to repair, suitable to use in permanent and mixed dentition, and compatible with fixed orthodontic appliances, and in comparison with Herbst appliance it has less dental effect; nevertheless, there are potential disadvantages as well as the proclination of lower incisors and development of posterior open bites (11) which in this case was not a big problem because of the normal inclination of lower incisors and the use of fixed orthodontic appliances that can finally eliminate the posterior open bite.
With respect to all the merits mentioned and the writer’s experience with the device, the Twin Block appliance was selected.
It seems that age was the only factor which was unfavorable for the functional treatment. Both chronologic age and developmental stages indicated [...]
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