Effect of soft liner on clinical implication of tooth supported overdenture

Abstract

Background/aim Overdentures are considered as the most preferred treatment modality in patients with few remaining teeth, especially after using different denture liners. The present study aims to compare between the clinical performance of tooth supported overdentures relined with three different types (hard denture liner, silicon soft liner, and acrylic resin based soft liner) regarding modified bleeding index, probing depth, and patient satisfaction. Patients and methods A total of 21 partially edentulous patients with one remaining tooth on each side received overdentures constructed with conventional method after abutment preparation. Then dentures were classified randomly into three groups according to relining material: group I was relined with hard liner, group II was relined with silicon soft liner, and group III was relined with acrylic resin soft liner. All patients were recalled after 1, 3, and 6 months. At recall visits, assessment of the oral health status was performed by measuring probing depth and modified bleeding index by using periodontal probe. Moreover, patient satisfaction was evaluated using Oral Health Impacts Profile-14 questionnaire. Results One-way analysis of variance (ANOVA) was performed to compare among the three groups, which revealed significant difference between them in all follow-up periods regarding modified bleeding index, probing depth, and patient satisfaction, followed by Tukey’s post-hoc test for multiple comparisons, which revealed a significant difference among all groups (P<0.05). On the contrary, comparison was performed between different follow-up periods in each group by repetitive one-way ANOVA test, which revealed a significant difference in all groups regarding modified bleeding index and probing depth, whereas revealed insignificant difference in patient satisfaction. Repetitive one-way ANOVA test was followed by Tukey’s post-hoc test for multiple comparisons, which revealed significant difference between T1 and T2 and between T1 and T3 in all groups regarding modified bleeding index, whereas revealed a significant difference between T1 and T3 in all groups regarding probing depth, but in patient satisfaction, insignificant difference was revealed. Conclusion Acrylic resin soft liner showed the best clinical performance then silicon soft liner followed by hard liner regarding modified bleeding index, probing depth, and patient satisfaction during the follow-up period.