[Gnathodynamometric studies in the conditions of pathologic abrasion]

Abstract

Unatoč do sada izvršenim brojnim istraživanjima pojava patološke abrazije u svim svojim aspektima nije dovoljno razjašnjena. Osobito injeni uzroci vezani na dinamiku žvačnog sustava, veće \u27ili manje žvaćne sile kao i pojava individualno veće ili manje abrazijske otpornosti tvrdih zubnih tkiva mogu biti glavni činitelji u nastanku ove pojave. Kako smo željeli dati odgovor barem na neka od spomenutih pitanja, cilj ovog rada bio je usmjeren na to da se pronađe uzročna veza između veličine žvačnih sila i pojave patološke abrazije. U tu svrhu izvršeno je gnatodinamometnijsko ispitivanje na odgovarajućem uzorku ispitanika s kliničkom slikom patološke abrazije. Kontrolnu skupinu činile su osobe muškog spola u dobi od 18— 22 godine starosti s intaktnim, potpunim zubnim nizovima. Rezultati ispitivanja bilježeni su u posebno kreirane anketne listove, statistički obrađeni i sveobuhvatno znanstveno analizirani. Na temelju dobivenih rezultata utvrđeno je da su prosječne vrijednosti žvačnih sila u ispitanika s patološkom abrazijom evidentno manje u odnosu na žvačne isile ispitanika iz kontrolne skupine, dok su žvačne sile ispitanika s bmksizmom i parafunkcijskim stiskanjem zubi veće od prosječnih vrijednosti žvačnih sila za ukupni uzorak ispitanika s patološkom abrazijom.Despite numerous studies of the subject conducted so far, the occurrence of pathologic abrasion has not yet been fuMy clarified in all its aspects. The causes associated with the masticatory system dynamics, i. e. greater or lasser masticatory forces as well as individually higher or lower resistance of hard dental tissues to abrasion, may be the major factors for the onset of this lesion. As our attempt was to provide answers to at least some of the mentioned qgustions, this study was directed towards finding the causal relationship between the magnitude of masticatory forces and the occurrence of pathologic abrasion. The gmathodynamometric testing was therefore carried out in a representative sample of subjects presenting with clinical picture of pathologic abrasion. The control group consisted of male subjects aged 18— 22 years, with intact, complete sets of teeth. The results, recorded in special po II questionnaires, were statistically processed and comprehensivevly scientifically analyzed. On the basis of the results obtained, the mean masticatory force values in the subjects with pathologic abrasion were found to be apparently lower than those observed in the control group subjects, whereas in patients with bmx\u27ism and parafu notional occlusion the masticatory forces were higher than the mean walues of these forces in the total sample of subjects with pathologic abrasion