Shima M. Abdel-Hamed, Magdy M. Ali And Dalia A. Ahmed,

ABSTRACT


Introduction: This Study Evaluated And Compared Sealing Ability And Adaptation Of Mineral Trioxide Aggregate (MTA) And Total Fill Root Repair Material (RRM) When Used In Repair Of Furcation Perforation. Method: 72 Extracted Human, Permanent Mandibular First Molar Were Used In This Study. The Occlusal Surface Of The Crowns Were Reduced To 3 Mm Coronal To The Cemento-enamel Junction, And The Roots Were Amputated 3 Mm Apical To The Furcation Area Using A Diamond Disc . A Conventional Endodontic Access Opening Was Made In Each Sample By Using #12 Tapered Stone With Round End. Flowable Composite Was Used To Seal The Orifices Of Each Canal . Perforation Was Made In The Center Of The Pulpal Floor Using A High Speed # 4 Round Bur. The Samples Were Divided Into 2 Groups According To The Test Used. Group (A), Leakage Study Were Subdivided Into 4 Subgroups: 2 Experimental (TotalFill, MM?MTA) And 2 Control (positive And Negative). Group (B) Marginal Adaptation Study Were Subdivided Into 2 Subgroups(TotalFill, MM?MTA). For Sealing Test, All Samples Were Completely Coated With Two Successive Layers Of Clear Nail Varnish Except For The Perforated Area, The Dye Penetration (Clearing) Method Was Used. Liner Dye Penetration Was Measured Under Stereomicroscope. To Evaluate The, The Interface Between The Repair Materials And Perforation Margins Was Measured Under SEM; Data Was Recorded Using Computer Software.

Results: TotalFill Showed Lower Non Significant Leakage Percentage Than MM-MTA. Also There Was No Statistically Significant Difference Between Marginal Adaptation Of The Two Materials.

Conclusions: Sealing Ability And Marginal Adaptation Of TotalFill Comparable To MM-MTA.