NCT05286073

Assessment of Vertical Root Fracture Resistance of Endodontically Treated Teeth Instrumented by Single Endodontic Files

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 88 (actual)
• Sponsor: Dow University of Health Sciences · Academic / Other
• Sex: All
• Age: 25 Years – 40 Years
• Healthy volunteers: Accepted

Summary

The purpose of this study is the assessment of vertical root fracture resistance of roots prepared with three different single endodontic rotary files in extracted human mandibular premolar roots.

Detailed description

88 human extracted mandibular premolars will be selected. Teeth will be sectioned below cementoenamel junction to get 13mm from the apex of root. Roots will then be standardized according to buccolingual and mesiodistal widths and will be examined for fracture and craze lines. The roots will then be randomly divided into 3 experimental groups and 1 control group (n=22). Group 1 will be instrumented with Hyflex EDM. Group 2 will be instrumented with F6 Sky Taper. Group 3 will be instrumented with One Shape and Group 4 will be negative control group in which no instrumentation will be done. After performing rotary instrumentation, roots will then be obturated with respective GP and sealer. Samples will then be exposed to vertical load utilizing Universal Testing Machine till fracture occur which will be recorded in Newton(N).

Conditions

• Vertical Fracture of Root of Tooth (Disorder)

Interventions

Type	Name	Description
PROCEDURE	Endodontic Root Canal Treatment	Root canal shaping procedures were performed. Irrigation was done after each three pecks of endodontic file. After instrumentation (Groups 1-3), the canals were dried with sterile paper points. The dentinal walls were then coated with Sealapex. For vertical root fracture resistance testing, sample preparation was done in acrylic blocks. Then roots were coated with polyvinylsiloxane impression material. After that roots were inserted again into acrylic resin blocks. The acrylic blocks with the vertically aligned roots were mounted in the Instron testing machine. 0.5 mm diameter round tip stainless-steel rod was fixed to the universal testing machine. The universal testing machine was adjusted and vertical compressive force was applied at a crosshead speed of 1mm/min. The Instron tester applied a slowly increasing force, until the root fractured. The maximum amount of force necessary to fracture every sample was recorded in Newton (N).

Timeline

• Start date: 2019-02-01
• Primary completion: 2022-01-01
• Completion: 2022-02-01
• First posted: 2022-03-18
• Last updated: 2022-03-18

Locations

1 site across 1 country: Pakistan