iDentistry The Journal Volume 14 No 2 | Page 39

The Journal One of the first to suggest the possible role of the tongue in the development of the high palate 11 was Meyer (1870), who felt that a low tongue position associated with mouthbreathing resulted in unopposed buccal forces on the maxillary dentition. This imbalance would cause the dental arches to collapse lingually. Tomes 11 (1872) and Korner 11 (1891) supported this view, adding that the lips apart posture of mouth breathers was a further disturbing factor in the equilibrium that determines the position of 11 teeth. Kingsley (1879), who in many ways was ahead of his time; thought that dentofacial morphology was predominantly under genetic control and disputed the environmentalist views of his contemporaries. Fig 2 : Adenoidal blockage seen in the lateral cephalogram Fig 3 : Position of tongue in normal and obstructive breathing during sleep 38 Vol. 14 No. 2 May-August 2018