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OR24 - Radiographic, Push-out and Confocal Comparison of Root End Fillings with BC Root Repair Material Alone or Combined with BC Sealer with Two Different Placement Techniques with and Without Pretreatment with EDTA

Virtual-Only Presentation

Presenter(s)

JK

Jason Knapp, D.D.S.

Endodontic Resident
University of Texas at Houston
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.

Co-Author(s)

Ji Wook Jeong, D.M.D., M.S.D.

Assistant professor
University of Texas at Houston
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.
JO

Joe Ontiveros, D.D.S., M.S.

Professor
University of Alberta
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.
Scott R. Makins, D.D.S., M.S.

Associate Professor
University of Texas at Houston
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.
David E. Jaramillo, D.D.S.

Professor of Endodontics
University of Texas at Houston
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.
BW

Ben F. Warner, D.D.S.

Professor
University of Texas at Houston
Housyon, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.
Timothy C. Kirkpatrick, D.D.S.

Professor and Graduate Program Director
University of Texas at Houston
Houston, Texas

Disclosure: I do not have any relevant financial / non-financial relationships with any proprietary interests.

Abstract: To determine if EDTA pretreatment or addition of sealer before putty effects root end filling quality. Three-millimeter root segments (N=90) were prepared to a standardized 1.3 mm canal with an artificial fin and lateral canal and assigned to three groups (n=30). Half of each group was pretreated with 17% EDTA (n=15). Following Fluo-3 placement, root-end fillings were placed with either BC putty (P), BC sealer followed by BC putty (S) or BC sealer cleared from the canal with a gutta-percha cone followed by putty (G). After confocal laser scanning microscopy and radiographic images were acquired, a push-out test was completed with a universal testing machine (Instron). Results were analyzed with Tukey contrast, Chi square and Shapiro-Wilk normality tests (p< 0.05). EDTA pretreatment had no effect on radiographic grading or push-out bond strength. For bond strength, cleared sealer (G) was significantly better than the sealer (S) however there was no statistical difference between putty (P) and either cleared sealer (P to G) or sealer (P to S). For radiographic scoring, the technique had no effect on the fill of the lateral canal. For the main canal, Putty (P) and cleared sealer (G) scored better than the sealer group (S). In the fin, Putty (P) was superior to either sealer technique (S or G). Conclusion: Placement of a bulk of sealer prior to putty diminished bond strength and radiographic quality of root-end fillings, while a coating of sealer prior to putty performed similar to putty alone.