Mohamed A Mokhtar , Eman Anwar , Jylan El Guindy And Nadia Fahmy,

ABSTRACT

Objectives: The Goal Of This Study Was To Show The Bond Strength Of Contaminated Zirconia Copings Cemented With Ceramir Cement With And Without The Addition Of Ivoclean Cleansing Paste. Materials And Methods : 36 Zironia Copings Were Milled Using A Cad Cam Machine Were Divided In To 3 Equal Groups (n=12) To Be Cemented On Freshly Extracted Human Molar Teeth. Group 1: Group 1 (control): Ceramir Cement Was Placed On The Fitting Surface Of The Un-contaminated Zirconia Copings. Group 2: The Fitting Surface Of The Zirconia Copings Were Immersed In Human Saliva Cleaned Then Cemented With Ceramir Cement. Group 3: The Fitting Surface Of The Zirconia Copings Were Immersed In Saliva Then Cleaned Followed Applying Ivoclean Cleaning Paste On The Fitting Surface Then Cemented. All Samples Were Subjected To Thermocycling Followed By Pull Out Testing.

Results: No Significant Difference Was Found Between The Three Tested Groups Groups, Where Saliva Contamination Group Recorded 288.30 � 87.77 N , Ivoclean Group Recorded 312.13 �75.79 N And Control Group Recorded 324.79 � 81.84 N With A P Vale Of 0.588. Conclusion: Ceramir Cement Showed Minimal Reduction In Its Retentive Properties When In Was Subject To Saliva Contamination. Recommendation: Ivoclean Cleaning Solution Could Be Successfully Used To Improve The Retention Of Zirconia Crowns Cemented With Ceramir After Saliva Contamination.