Research Information System
Thesis Type: Doctorate
Institution Of The Thesis: Gazi Üniversitesi, Sağlık Bilimleri Enstitüsü, Turkey
Approval Date: 2016
Student: ITIR AYDINTUĞ
Supervisor: ALEV ALAÇAM
Abstract:In this study, it was aimed to evaluate in vitro fracture resistance of simulated immature teeth where apexification treatment steps were applied for two different time intervals and strengthened with different root reinforcement techniques. After the apices of extracted 112 maxillary central teeth were cut and prepared then were randomly divided into two groups. In the first group single visit apexification treatment after 1 week calcium hydroxide application and in the second group traditional apexification treatment with 3 months calcium hydroxide application were achieved. After the apical plug was provided with MTA in all samples, these two groups randomly divided into four subgroups (n:14). In these groups root reinforcements; quartz fiber post (Bisco DT Light Post) (group K), polyethylen fiber post (Ribbond) (group P), glass fiber post (CarboTech SnowPost) (group C) were applied and the control group was reinforced with heat softened gutta-percha obturation (Calamus) (group G). The fracture resistance of root specimens were tested by Universal Testing Machine (Lloyd-LRX; Lloyd Instruments, Fareham, England). The data were compared with ANOVA, Mann-Withney U and Kruskall-Wallis H tests at 0.05 significance level. P<0.05 was considered statistically significant. The results showed that in the first group that 1 week calcium hydroxide application was done there was no statistically significant difference between fracture resistance of K,P,C, and G subgroups (p=0,832). At the end of the study, 3 months calcium hydroxide aplication has shown that K, P, C, G groups fracture resistance has been statistically similar (p=0,949). The fracture resistance differences between traditional and one visit apexification treatment were not found significant for all groups. Within the limitation of this study, 3 months calcium hydroxide application versus 1 week application did not effected the fracture resistance of root reinforcement significantly.