Comparative assessment of marginal adjoining of fillings and dental inlays in patients with xerostomia

Abstract

Aim. To study change of electrometric index of fillings and dental inlays marginal adjoining on the border with hard tooth tissues in patients with xerostomia over time. Methods. 40 patients (male - 11, female - 29) aged from 28 to 56 years with xerostomia, in whom 80 dental restorations were completed. Inclusion criteria were the following: signed informed consent, diagnosis of xerostomia, preserved chewing function of mandibular and maxillar teeth, and presence of an antagonist of the examined tooth. Patients were divided into two subgroups (40 patients each) depending on the treatment method used: dental filling (1st group) or dental inlay (2nd group). Both fillings and inlays were made of packed restorative composite Filtek P60. Dental dam was used to isolate restored tooth from saliva. Marginal adjoining control at the border «tooth-composite» was made by «DentEst» (Geosoft, Russia) electrometric device. Comparative evaluation of marginal adjoining quality at «tooth-filling» and «tooth inlay» border was performed at 3, 6, 9 and 12 months after treatment. Results. 10 minutes after treatment mean values of marginal permeability in the first group did not significantly differed from the second group, indicating good marginal adjoining. 3 months after the treatment at electrometry marginal adjoining was incomplete in 1 filling out of 40, compared to the second group where marginal permeability was still good at 12 months after treatment. The functional examination of restored teeth with good marginal adjoining at a period from 3 to 12 months after treatment showed that this number reduced from 98 to 45% in the first group and from 100 to 95% in the second group. Differences between groups were statistically significant. Conclusion. In patients with xerostomia tooth reconstruction using dental inlay is more effective than use of dental filling.