Volume 6 Issue 5 (September -October), 2020

Original Articles

Comparative evaluation of fracture resistance of simulated human immature teeth reinforced with anatomic post and MTA or Biodentine as apical barrier
Kirti Mangalam, Khushbu, Shaily Sharma, Priyanka Verma, Hamdan

Background: The present study was conducted to compare the resistance to fracture of simulated human immature teeth treated with anatomic post and MTA or biodentine as apical barrier. Materials & Methods: The present study was conducted on 40 permanent mandibular incisors. The 40 teeth were then randomly divided into two groups (n = 20) according to the apical barrier used for apexification. All samples were incubated for two weeks at 37C before subjecting to fracture testing using the Universal Testing Machine. A compressive load was applied at 135 to the long axis of the tooth. Results: Group Iapical barrier using biodentine and Group IIapical barrier using MTA (MTA Plus). Each group was further divided into four subgroups: Group I (n = 20), subgroup A (n = 5)apical barrier using Biodentine with no obturation, subgroup B (n = 5)-apical barrier using biodentine, subgroup C (n= 5) apical barrier using biodentine and the same biodentine as complete obturation material. Subgroup D (n = 5)apical barrier using biodentine with prefabricated glass fiber post as reinforcement. Group II (n = 20) The subgroups (n = 5 each) were same as Group I, but Biodentine was replaced by MTA as apical barrier as well as canal reinforcement material (subgroups IIA, IIB, IIC, IID). Fracture resistance in group I was maximum as compared to group II. Everstick showed value of 1472.3 MPa in group I and 1294.5 MPa in group II. Control showed 642.4 in group I and 610.5 MPa in group II. Inter- group comparison was significant (P< 0.05). Conclusion: Authors found that everStick post is a viable option for reinforcement of teeth with immature root apex. Key words: Bio dentine, EverStick post, Root apex.

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