Reconstruction of Pulpotomized Primary Molar and Retention of Stainless-steelCrowns: An In-vitro Study

Mehrshad Zareiyan | Rahil Ahmadi | Mehrdad Kahvand | Roza Haghgoo | Fatemeh Molaasadolah

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=147957
Date :  2020/10/29
Publish in :    The Open Dentistry Journal


Keywords :Primary molar, Retention, Stainless steel crown, Dental tissue reconstruction, ZoE liner, Pulpotomized teeth

Abstract :

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Background:Stainless steel crowns are proposed to restore severely decayed teeth in pediatric dentistry. Yet, their retention is still debatable.Objective:This study aimed to investigate whether dental tissue reconstruction before placement of stainless steel crown on pulpotomized first primary molaraffects the retention of stainless steel crowns.Methods:This experimental in-vitro study was performed on 30 extracted first primary molars with carious occlusal and distal surfaces. Dental caries and thepulp chamber roof were respectively removed. The stainless steel crowns were placed after tooth preparation. The samples were randomly dividedinto two groups (n=15) i.e, ZoE core buildup, and ZoE liner. Stainless steel crowns were cemented with self-curing glass ionomer cement. Thecrown retention was tested with the Instron testing machine. The two groups were compared by using SPSS software through the t-test (α=0.05).Results:The mean crown retention in the liner group (291.45±43.196 N) was significantly higher than that of the core buildup group (202.00±63.515 N)(P=0.001).Conclusion:Based on the results of this study for restoring the teeth with extensive tissue loss by SSC, ZoE should be used as lining without a core on teeth.