Mohamed Sa?ed Abd El Azeem Fadaly, Dalia Ali Mokarab And Reham Hassan ,

ABSTRACT


Aim: The Present Study Aimed To Evaluate And Compare Of The Incidence And Propagation Of Apical Cracks After Root Canal Obturation Using Lateral Compaction And Vertical Compaction Technique.

Materials and Methods: A Total Of 20 Human Mandibular Single Rooted Premolars With Single Straight Root Canals Were Used In This Study. After Decoronation, One Millimeter From The Apex Of Each Tooth Was Ground Perpendicular To The Long Axis To Remove Apical Ramifications.Instrumentation Was Done Using Fanta Rotary Filesto File40 Taper 4%. Samples Were Randomly Divided Into Two Experimental Groups (n = 10) According To The Obturation Technique Used Either Lateral Compaction Or Warm Vertical Compaction Using Totalfillbioceramic Sealer. Four Digital Images Of The Resected Apical Root Surface Were Recorded For Each Specimen, Baseline, After Preparation, Immediately After Flling, And After 14 Days. The Images Were Then Inspected For The Presence Of Any New Apical Cracks And Propagation. Mann-Whitney U Test Was Used To Compare Between The Two Groups. Friedman?s Test Followed By Dunn?s Test Was Used To Study The Changes Within Each Group

Results: After Instrumentation; There Was No Statistically Significantdifference Between Incidence Of Cracks In The Two Groups (P-value = 1, Effect Size = 1). Both Groups Showed The Same Incidence Of Cracks (80%). After Obturation As Well As After 14 Days; There Was No Statistically Significantdifference Between Incidence Of Cracks In The Two Groups (P-value = 0.474, Effect Size = 2.25) And (P-value = 0.474, Effect Size = 2.25), Respectively. Warm Vertical Compaction Group Showed Higher Incidence Of Cracks Than Lateral Condensation Group (100% And 80%, Respectively). Warm Vertical Compaction Technique Is 2.25 Folds Prone To Crack Compared To Lateral Condensation Technique. After Obturation As Well As After 14 Days; Lateral Condensation Group Showed Statistically Significantlyhigher Crack Propagation Measurements Than Warm Vertical Compaction Group (P-value = 0.039, Effect Size = 1.099) And (P-value = 0.039, Effect Size = 1.099), Respectively.

Conclusions: Dentinal Defects Were More Significantlyattributed To The Role Of Root Canal Instrumentation Rather Than The Type Of Obturation Technique.