Relationship between morphology of stomatognathic system and its function in the group of young adults.
Dr. Marcel Czajkowski1, Dr. Joanna Kuć2, Prof. Teresa Sierpińska2
1 Private Specialist Dental Practice in Bydgoszcz, Poland,
2 Department of Prosthetic Dentistry, Medical University of Bialystok, Poland
Objectives
The stomatognathic system (SS) functioning is the result of extremely complex morphological and functional relationships taking place under the control of the nervous system. The aim of this study was to assess if morphology of the cranial bones may influence the function of SS.
Materials and Methods
148 young adults aged 17-25 were included in a detailed examination of the stomatognathic system. Bone morphology was determined by the use of lateral cephalograms along with their detailed cephalometric analysis using the Ricketts’ and McNamara’s method. The functional diagnosis included surface electromyography tests (BioEMG II) and digital evaluation of occlusal conditions as a function of time (T-Scan III). The results were then subjected to statistical analysis taking the type of probability distribution of the obtained data into account.
Results
The reference values of the Ricketts and McNamara analyses do not apply to populations of a different size, age structure and ethnic origin than those on which they were developed. It has been proved that T-Scan and EMG tests are the complementary methods of SS diagnostics. However, their results should be interpreted separately. A relatively high sensitivity of the VERT index was also demonstrated, which seems to be a clinically transparent parameter characterizing the biotype of the face of the examined individuals, regardless of their gender and interdental relations.
Conclusions
It was found that the morphological and functional interactions of the SS area are multifactorial and it is impossible to indicate the leading parameters that modulate its functioning.