Examination of the purpose fillings made of cermet glass-ionomer cement in abutment teeth for removable partial dentures

Abstract

The aim of the study was to describe the clinical process of setting the purpose filling on abutment teeth, after finishing the removable partial dentures. The aim was also to investigate the use of cermet glass-ionomer cement for the purpose filling in the abutment teeth for removable partial dentures, as well as to investigate the surface of the purpose filling. For the clinical evaluation of purpose filling slightly modified criteria according to Ryg's were used in 20 patients with different type of edentulousness. Changes occurring on the surface of purpose filling have been experimentally established by the method of scanning electron microscopy on the half-grown third molars in seven patients. It could be concluded that cement glass-ionomer was not the appropriate material for the purpose fillings in abutment teeth for removable partial dentures.

Cilj rada je bio da se opiše klinički postupak postavljanja namenskih ispuna na retencione zube posle izrade parcijalne skeletirane proteze i klinički proceni stanje, a takođe analiziraju promene nastale na spoljašnjoj površini namenskih ispuna od doziranog kermet glas-jonomer cementa preko kojih su se nalazili elementi parcijalne skeletirane proteze. Za kliničku procenu stanja namenskih ispuna korišćeni su nešto izmenjeni kriterijumi po Ryge-y kod 20 osoba različitog tipa krezubosti. Promene nastale na površini ispuna eksperimentno su utvrđene metodom skenirajuće elektronske mikroskopije na poluimpaktiranim trećim molarima kod 7 osoba. Za namenske ispune neophodno je koristiti samo materijale koji imaju visoku otpornost na mehanička opterećenja i abrazivnost. Kermet glas-jonomer cementi su nepouzdan materijal za upotrebu na retencionim zubima usled progresivnog opadanja kvaliteta ispuna i pojave destruktivnih promena na površini sa uočenim pukotinama i defektima posle opservacionog perioda od 36 meseci.