Naslov
Metrička analiza temporomandibularnog zgloba magnetskom rezonancijom u asimptomatskih ispitanika
(Metric analysis of temporomandibular joint in asymptomatic persons by magnetic resonance imaging)

Autori
Badel, Tomislav ; Pandurić, Josip ; Marotti, Miljenko ; Kern, Josipa ; Krolo, Ivan

Izvornik
Acta medica Croatica (1330-0164) 2009 (2008), 5; 455-460

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
temporomandibularni poremećaji; temporomandibularni zglob; anteriorni pomak zglobne pločice; asimptomatski ispitanici
(temporomandibular disorders; temporomandibular joint; anterior disc displacement; asymptomatic volunteers)

Sažetak
Cilj istraživanja bio je utvrditi položaj, odnosno anteriorni pomak zglobne pločice u klinički odabranoj skupini asimptomatskih osoba (25 studenata stomatologije u dobi od 21 do 27 godina, prosječno 23, 4 godine, od toga 72% ženskog spola) bez simptoma i znakova temporomandibularnih poremećaja te kvantitativno ga usporediti sa položajem glavice kondila u položaju zatvorenih usta. Metrička analiza temporomandibularnih zglobova provedena je pomoću magnetske rezonancije na T1 mjerenim snimakama u parasagitalnoj ravnini. Utvrđena je prevalencija anteriornog pomaka zglobne pločice kod 20% osoba, odnosno 25% njihovih temporomandibularnih zglobova. Metričkom analizom potvrđen je vizualno utvrđen anteriorni pomak zglobne pločice, ali relativni položaj kondila ne ovisi o skupinama zglobova asimptomatskih ispitanika s fiziološkim položajem i anteriornim pomakom zglobne pločice. Aim: The objective of this study was to investigate prevalence of anterior disc displacement and condyle position in volunteers free from clinical symptoms and signs of temporomandibular disorders. Material and Methods: Bilateral parasagittal T1-weighted magnetic resonance images of temporomandibular joints (TMJ) in 25 asymptomatic volunteers (mean age 21&#8211; 27, average 23.4 years, 18 (72%) female and 7 (28%) male) were analyzed and metric measurement of disc and condyle position were investigated. The metric analysis of the position and relationship between the disc and the condyles was described using Kurita et al&#8217; s method of measuring the relative and absolute distances of reference points. In statistical data analysis, the left and right TMJs of each person were presented as two separate entities within the data analysis. The nonparametric statistics was used. Results: Anterior disc displacement was found in 5 (20%) of asymptomatic volunteers (four of them female). Anterior displacement with unilateral reduction and anterior displacement without reduction unilaterally was present in two subjects each, whereas one volunteer had anterior displacement without reduction bilaterally. There was no difference between in the calculated position of condyle between joint with and without disc displacement (Kruskal-Wallis test, p<0.05). Discussion: This study evaluated prevalence of asymptomatic anterior disc displacement in symptom-free healthy volunteers and the position of the condyle in the glenoid fossa. Displaced disc is the main cause of temporomandibular pain ; however, studies in asymptomatic volunteers also suggest it to be an anatomic variant. The relationship between dorsocranially positioned condyle and anterior displaced temporomandibular joint disc is a controversial issue. Metric analyses were made only in the parasagittale plane. Conclusion: There was difference between the calculated position of disc between joint with no disc displacement and joint with disc displacement, but this study found no difference in the calculated condyle positions according to the presence or absence of disc displacement.

Izvorni jezik
Hrvatski

Znanstvena područja
Kliničke medicinske znanosti, Dentalna medicina

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