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Volume of Voids in Retrograde Filling: Comparison between Calcium Silicate Cement Alone and Combined with a Calcium Silicate-based Sealer

 Jaeheon Jung  ;  Sunil Kim  ;  Euiseong Kim  ;  Su-Jung Shin 
 JOURNAL OF ENDODONTICS, Vol.46(1) : 97-102, 2020 
Journal Title
Issue Date
Calcium ; Calcium Compounds* ; Dental Pulp Cavity ; Gutta-Percha ; Humans ; Materials Testing ; Root Canal Filling Materials* ; Root Canal Obturation ; Silicate Cement* ; Silicates*
Calcium silicate ; micro–computed tomography ; retrograde filling ; scanning electron microscopy ; sealer
INTRODUCTION: The aim of this study was to compare the volume of voids between retrograde filling using calcium silicate cement alone and retrograde filling using a combination of calcium silicate cement with a calcium silicate-based sealer. METHODS: Twenty single-rooted, extracted human teeth were instrumented with nickel-titanium files and obturated with gutta-percha. We resected the roots at a point 3 mm from the apex, prepared the root ends, and filled the root-end cavities with Endocem Zr (Maruchi, Wonju, Korea) or Endoseal MTA (Maruchi) plus Endocem Zr. Then, we scanned the prepared samples using micro-computed tomographic imaging and performed 3-dimensional reconstruction. The percentage volume of the gap between the canal wall and root-end filling was calculated along with the percentage volume of voids in the filling materials. All data were analyzed using the Mann-Whitney U test. Selected specimens were further observed using scanning electron microscopy. RESULTS: There were no significant differences in the percentage volumes of the gaps and internal voids between the 2 groups. Both calcium silicate and the calcium silicate-based sealer exhibited good adaptation to the cavity wall. CONCLUSIONS: The findings of our micro-computed tomographic and scanning electron microscopic analyses suggested that the volume of voids in retrograde filling using a combination of calcium silicate cement and calcium silicate-based sealer was comparable with that in retrograde filling using calcium silicate cement only. Calcium silicate-based sealers could be used in retrograde filling for clinical convenience without harmful effects on the quality of filling.
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2. College of Dentistry (치과대학) > Dept. of Conservative Dentistry (보존과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sun Il(김선일) ORCID logo https://orcid.org/0000-0002-8889-9844
Kim, Eui Seong(김의성) ORCID logo https://orcid.org/0000-0003-2126-4761
Shin, Su Jung(신수정) ORCID logo https://orcid.org/0000-0001-5795-3919
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