Assessment of Marginal Fit of Two Esthetic Preformed Pediatric Crowns: An In Vitro Study

• Published in: Journal of orofacial sciences 2024-01, Vol.16 (1), p.57-62
• Main Authors: Doppalapudi, Anusha, Pranitha, Kakarla, Sai Sankar, Avula Jogendra, Siva Sankar, Kundeti, Kattappagari, Kiran Kumar, Deepthi Nirmal, Gavarraju
• Format: Article
• Language: English
• ISSN: 0975-8844
• DOI: 10.4103/jofs.jofs_182_23

Introduction: Long-term success of any indirect restorations such as pediatric crowns depends on the accuracy of the crown margins, because an acceptable fit at the margins will promote gingival health and protects the tooth from physical, chemical, bacterial, and thermal injury. Taking this into consideration, the present study was designed to assess the marginal fit of two tooth colored preformed pediatric crowns in primary teeth. Materials and methods: A total of twenty-eight extracted human primary molars were selected and divided into two groups: ( n = 14) Group I (Zirconia crowns) and Group II (Fiberglass crowns). Tooth preparation was done to receive their respective crown, which was cemented using resin-modified glass ionomer luting cement. Following cementation, the teeth were sectioned 1 mm below the cementoenamel junction, thermocycled, and viewed under stereomicroscope at 100× magnification. The marginal gap was measured on the four sides of the crown (buccal, lingual/palatal, mesial, distal) from stereomicroscopic photographs using MICAPS image analyzer software. Results: Statistical analysis was done using Mann–Whitney U -test. It was observed that Group I samples showed better marginal fit values when compared to Group II samples on all the aspects. Conclusion: Both zirconia and fiberglass crowns are good options for full coronal restorations in primary teeth. However, zirconia crowns were found to be more acceptable in terms of its adaptability and esthetics.