[Dentigerous cyst associated with maxillary canine as a reason of occlusion defect - case report of 7-year old boy]. / Torbiel zawiazkowa kla górnegojako przyczyna zaburzen zgryzu-opis przypadku 7-letniego chlopca.

Dentigerous cysts are characterized by slow and non-symptomatic growth. Usually they are recognized accidentally during the radiological examination of patients with an occlusion defect or dental age different than growing age. In the case described, the patient presented for dental treatment with the complaint of an occlusion defect and the appearance of a right deciduous maxillary lateral incisor (52). Radiological examination showed the presence of a horizontally positioned maxilla right lateral incisor (12) and dentigerous cyst of tooth 13 (right canine) in the maxilla sinus. After surgical consultation the cyst enucleation and extraction of the unerupted maxillary right canine were performed. Four months later the orthodontic treatment began.

Changes of oral sensibility in subjects with partial anterior open bite and the incorrect position of the tongue.

Neuromuscular disorders lead to an imbalance in the position of the jaw. The aim of this study has been to analyse gnostic sensibility in subjects with partial anterior open bite and the incorrect position of the tongue. The study involved 20 subjects with partial anterior open bite and an incorrect tongue position. The control group consisted of 20 individuals with correct occlusion and tongue position. The basic study method was a stereognostic examination using 4 silicon shapes - a square, triangle, circle and semicircle. The accuracy of shape identification and the time that the subjects needed to identify the shapes were analysed before and after the tip of the tongue was anaesthetized. Results showed that correct identification of the shapes was 7.4% worse in the study group than in the control group and that the difference was greatest when the tip of the tongue was anaesthetized - 28.8%. The time needed to identify the shapes was shorter in the study group than in the control group. The results indicate that people with partial anterior open bite and incorrect tongue position exhibit impaired gnostic sensibility, especially at the tip of the tongue. Impaired gnostic sensibility, which is a symptom of the disturbed sensomotoric correlation of the tongue, leads to the tongue's incorrect position in the process of swallowing and speaking.