Aim: The increase in demand for aesthetic crowns in primary teeth necessitates the evaluation of various other factors
contributing to the success of the crowns. One such factor, which is of utmost importance is the retention rate. Hence, The motive
of the present study was to compare the retention rates of two pre-formed crowns - Stainless steel and Zirconia crowns for restoring
deciduous molars.
Materials and method: 20 children with 2 contra-lateral primary molars in the same arch requiring crowns were selected and restored with SSC and Zirconia crowns. The retention of the crowns were evaluated at 3,6,9 and 12 months follow-up. Descriptive
statistics and chi square test were used for statistical analysis.
Results: A total of 20 children with mean age of 4.25 + 0.7 years participated in the trial. None of the SSC got chipped till 12
months of follow up period, whereas 13 zirconia crowns showed chipping. Similarly there was no large loss of crown seen with
SSC whereas 3 zirconia crowns showed large loss. Also there was no crown lost reported with SSC but 3 Zirconia crown lost was
observed at 12 months follow up.
Conclusion: The Retention of zirconia crowns in primary teeth is not as good as Stainless steel crowns in primary teeth.
Key words: Primary teeth, Retention, Stainless steel crowns, Zirconia.
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