| Abstrakt: |
In the modern world, the gold standard Stainless steel crowns are still widely used as a restorative crown in children. They exhibit excellent retention even when they have poor aesthetics. There is a need to upgrade to the zirconia crowns that comes with high aesthetics. The aim of the study was to assess the clinical outcome of novel Kedo Zirconia crowns to the gold standard stainless steel crowns in primary molars. This is a randomized controlled trial which took place in Chennai, India from February 2022 till April 2023. This study was a split-mouth study conducted on 20 children with positive Frankl’s behaviour who underwent pulpectomy. After pulp therapy, 40 molars were restored and divided into two groups; Group 1- Stainless steel crowns(n=20) and Group 2 Kedo Zr Crowns(n=20) and were followed up at regular intervals till 1 year. The crowns were assessed by Modified United States Public Health Service criteria. Simple random sampling was done to select the samples. Analytical statistics included Friedman test for intra-group assessment of all parameters for all the timelines and Mann Whitney U test to assess the difference between means of ordinal variables between the groups at p<0.05. With respect to colour (p=0.037), formation of secondary caries (p=0.028), marginal discolouration(p=0.04) and anatomic wear (p=0.004) and at 12 months, Stainless steel crowns and Kedo Zr crowns had a significant difference where colour mismatch, secondary caries, marginal discoloration and anatomic wear were higher in Stainless steel crowns group.There was no significant difference in the baseline in the parameters between the groups. At 12 months, both the groups did not have a significant difference in the marginal adaptation (p=1), post operative sensitivity (p=1) and retention of the crowns (p=0.157). Kedo Zr crowns provide a more aesthetically pleasing and widely accepted restorative choice for primary mandibular molars, even while being more expensive. This is explained by their superior retention, colour matching, a lack of gingival irritation, and a lack of secondary caries. [ABSTRACT FROM AUTHOR] |
