Morphological changes of the hard palate and posterior dentition following myofunctional tongue therapy

Morphological changes of the hard palate and posterior dentition following myofunctional tongue therapy

linear and angular changes with the soft-tissue either the Begg or the edgewise group. Morphological Changes Myofunctional Tongue Benjamin V. Doto, Jr...

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linear and angular changes with the soft-tissue either the Begg or the edgewise group. Morphological Changes Myofunctional Tongue Benjamin V. Doto, Jr.

of the Hard Therapy

Palate

linear

and angular

and Posterior

Dentition

changes in

Following

A model study of the morphologic changes of the hard palate and posterior dentition after myofunctional therapy without orthodontic intervention was made to determine the effects of the corrected tongue position during physiologic swallowing. Pretreatment and posttreatment models were fabricated of thirty-eight patients-twenty-five females and thirteen males with a mean age of 11.58 years. All the patients exhibited an anterior tongue thrust. A statistical analysis of the measurements of palatal height and posterior dental width was made to evaluate the significance of the tongue in a proper physiologic swallow pattern after myofunctional tongue therapy on the hard palate and posterior dentition. The analysis showed a significant difference in height at the 99 per cent level of confidence and no significant difference in width at the 95 per cent level of confidence. The form of the palatal vault of the pretreatment and posttreatment models was represented by tracings of a wax imprint of the models. The superimposed tracings showed slight increases in width and height but no marked changes of the palatal vault. Cephalograms of twelve of these patients were taken to determine the position of the tip of the tongue to the mandibular incisors during physiologic rest. Two control group were used for comparison. One group of sixteen females and fourteen males with a mean age of 12.2 years had anterior open-bites. The other group of sixteen females and fourteen males with a mean age of 12.2 years demonstrated normal swallowing patterns. A statistical analysis of the position of the tip of the tongue in relation to the mandibular incisors of all three groups was made. The statistical evaluation showed no significant difference between the mean vertical and horizontal positions of the tip of the tongue to the mandibular incisors in the three groups. A Cephalometric and Anatomic Study of the Relationship Between Masseter Muscle, the Medial Pterygoid Muscle, and Gonial Angle of the Human Mandible: A Continuing Study Angelo M. Ninivaggi

the

The purpose of this investigation was to obtain a sample size that could provide some statistically valid conclusions as to the relationship between the gonial angle and the origin and insertions of the masseter and medial pterygoid muscles in the human mandible. The heads of fifteen cadavers were dissected, and the anterior and posterior borders of the masseter and medial pterygoid muscles were marked with 0.012