Orofacial functions and quality of life in oral health in subjects with dentofacial deformity

Abstract

The facial pattern influenced the performance of the OFFs and the QoL in individuals presenting DFD, with a greater occurrence of changes for patterns II and III, and the worse the OFFs, the worse the QoL in cases with DFD.

Variables associated with mouth breathing diagnosis in children based on a multidisciplinary assessment

“…Among stomatognathic functions, only mastication presented one variable associated with MB diagnosis, that is, the presence of unexpected contraction of orbicularis and mentalis muscles during mastication with a 2.97-times greater probability for this outcome. As mentioned above, chronic unilateral masticatory pattern and excessive contraction of mentalis and perioral musculature during mastication were related to convex facial type, an MB characteristic also found in the present study (26) . During mastication, unsystematic lip sealing, tongue interposition and tension in mentalis and orbicularis oris muscles, necessary to keep food inside the mouth for swallowing, were also observed in the MB child group (27) .…”

“…A cephalometric study found no difference between mouth and nasal breathing children in nasolabial angle, however convex facial type and diagnosis for MB were associated (8) . Convex facial type was associated with mouth and mist breathing mode, chronic unilateral masticatory pattern, excessive contraction of mentalis and perioral musculature during mastication and forward tongue and head movement during swallowing (26) .…”

“…The literature describes a wide range of characteristics commonly attributed to mouth breathers. The most frequent are dolichofacial type or long face (4,5) , convex facial profile (26) , deep and narrow hard palate (5,9) , open lip posture and lowered tongue (26) , everted lower lip (10) , Angle Class II and posterior crossbyte malocclusion (1,4) , changes in stomatognathic functions (27) and postural misalignments (3) . Nevertheless, concerning the MB mode, which affects various body systems and craniofacial growth, there was no agreement to describe this condition.…”

Pressure and resistance of the lips in subjects with and without occlusal change

“…In general, the subjects of this study showed low values of pressure of the lips, corroborating with other studies that evaluated the said structure under other conditions [21][22][23][24][25] . Improper pressure peak of Class I subjects may be explained by the fact of not having been considered, differences in the facial profile of the subjects (dolichofacial, mesofacial and brachyfacial), whereas, in the vertical plane, literature also reports muscular pattern modification in structure function 6 . In addition, the population of subjects without change, studied for the reference values of IOPI, is of American nationality 16 , which could have differed from subjects of this research due to ethnic differences.…”

“…Subjects with maxillomandibular disproportions have myofunctional and facial profile characteristics according to the type of disproportion of that feature. Muscle adaptations that occur in various types of dentofacial deformities (DFD) enable the realization of stomatognathic functions that are performed according to the pattern of the maxillofacial skeleton bone structure 6 .…”