The purpose of this study was to compare the 12-month clinical outcomes of primary maxillary incisors restored with composite strip crowns (CSCs), NuSmile preveneered stainless steel crowns (PVSSCs), and NuSmile zirconia crowns (ZCs). A total of 135 teeth in 49 two- to four-year-olds with early childhood caries were randomly assigned to crown groups. Demographic and tooth-related variables at baseline and 12 months were assessed by calibrated examiners.
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