Author ORCID Identifier

https://orcid.org/0009-0005-1360-2099

Semester

Summer

Date of Graduation

2025

Document Type

Thesis

Degree Type

MS

College

School of Dentistry

Department

Not Listed

Committee Chair

Samuel Dorn

Committee Member

Steven Whitaker

Committee Member

Constance Wiener

Abstract

Abstract

A COMPARISON OF ENDODONTIC ROOT-END FILLING TECHNIQUES: A MICRO-COMPUTED TOMOGRAPHY ANALYSIS

Andrew Marra, D.D.S.

Introduction: Researchers have compared many endodontic root-end filling techniques for porosity, though few have used a micro-computed tomography analysis for comparisons. The purpose of this study was to evaluate total porosity volume of three different bio-ceramics filling materials with two techniques--hand compaction versus hand/ultrasonic compaction at an ultrasonic setting of 5% using Micro-CT Analysis.

Methods: Seventy-two human single canaled extracted teeth were selected for the study. All were subjected to orthograde endodontic treatment followed by root tip resection at 3-mm from the apex with a 90° slice to the long axis of the root. A standard retrograde preparation of 3-mm depth was created with an ultrasonic tip with a setting of 5%. Samples were assigned to six groups (n = 12 per group) according to the filling material and method used: ProRoot® MTA compacted by hand alone; ProRoot® MTA compacted by hand/ultrasonic compaction; Biodentine® compacted by hand alone; Biodentine® compacted by hand/ultrasonic compaction; EndoSequence® BC putty compacted by hand alone; and EndoSequence® BC compacted by hand/ultrasonic compaction. Teeth were scanned with micro-CT to evaluate total porosity volume. A Wilcoxon test was conducted to determine if there was a difference between the groups compacted by hand alone and the hand/ultrasonic compaction group.

Results: The results did not show a significant difference between the total of hand compaction alone versus the hand/ultrasonic compaction (p-value = 0.603). There was no significant difference between each material when comparing hand compaction alone versus hand/ultrasonic compaction. MTA (hand compaction alone versus hand/ultrasonic compactions) yielded a p-value of 0.318, BD (hand compaction alone versus hand/ultrasonic compactions) yielded a p-value of 0.443, and BC (hand compaction alone versus hand/ultrasonic compactions) yielded a p-value of 0.378.

Conclusion: Within the limitations of this in vitro study, both hand compaction alone and hand/ultrasonic compaction resulted in similar total porosity volume.

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