Correlation between Functional Disorders of Temporomadibular Joint and Upper Crossed Syndrome

Abstract

Research background. The imbalance between the jaw and neck muscle activityoccurs as a compensatory mechanism in order to stabilize the jaw and neckstructural parts in temporomandibular joint (TMJ) disorders (Ries et al., 2008).Changes occur in posture control system if any biomechanical unit varies (Ritzel et al., 2007). One system compensates the unusually active other body system in upper cross syndrome (UCS) (Tharcher et al., 2011). This syndrome is characterized by shortened upper trapezius, pectoralis major and romboids and week middle and lower trapezius, serratus anterior and deep neck flexors (Moore, 2004; Tharcher et al., 2011). Thus, it is believed that there may be a direct link between the uppercross syndrome and temporomandibular joint dysfunction.Purpose. Explore relationship between temporomandibular joint dysfunctionand upper crossed syndrome in women.Methods. Thirty female volunteers participated in the study, and they weredivided into groups according to trigger points in the shoulder and neck muscles:group 1 – painful shoulder and neck muscles (32.65 ± 12.34 years), group 2 –painless shoulder and neck muscles (34.5 ± 10.95 years). Survey was carriedout assessing TMJ function during observation, palpation, evaluation of the sagittalcraniovertebral angle, the neck and shoulder muscle length, strength, pain anddeep neck muscle endurance was examined.Results. It was found that TMJ function was strongly associated with the UCS:trapezius pain as well as upper trapezius and scalenus length. TMJ disorders wereassociated with headache in both groups. Weak connection between deep neckmuscle endurance and TMJ dysfunction was identified.Conclusions. TMJ mobility is partly related to UCS, and TMJ functional disordersrelated to headache and sagittal craniovertebral angle. UCS specific changes,such as pectoralis muscle length changes and impaired deep neck muscle endurance are not related to TMJ dysfunction.

Relationship Between Functional Movements of the Mandible and Core Stability in Young Healthy Adults

“…SAŽS dalyvauja kramtymo, kalbėjimo, žiovulio procesuose. SAŽS struktūrinės dalys -žandikaulio kaulas, kremzlės -dėvisi ir dėl to gali atsirasti funkcijos sutrikimų (Juodžbalienė et al, 2016). Šie sutrikimai gali riboti ne tik apatinio žandikaulio, bet ir veido judesius bei mimikavimą, sutrikdyti žandikaulio ir kaklo raumenų aktyvumo pusiausvyrą, sunkinti kramtymą, rijimą, kalbėjimą, net kvėpavimą.…”

“…Yra mokslinių įrodymų, kad dėl kompensacinio mechanizmo, pasireiškiančio pakitus SAŽS funkcijoms, sutrinka žandikaulio ir kaklo raumenų aktyvumo pusiausvyra. Įvykus pasikeitimui bet kuriame biomechaniniame vienete, neišvengiamai pasikeičia laikysenos valdymo sistema (Juodžbalienė et al, 2016). Tačiau stinga įrodymų, kad SAŽS funkciniai judesiai gali būti susiję su liemens stabilumu.…”

“…Jeigu indekso reikšmė lygi 0, tai mobilumas normalus, 1-4 balai -mobilumas nedaug sutrikęs, 5-20 balų -labai sutrikęs. Išsamus metodikos aprašas pateikiamas ankstesnėje studijoje (Juodžbalienė et al, 2016).…”