ArticleInternational journal of clinical pediatric dentistry2026
Comparison of Clinical Performance of Preformed CAD/CAM Milled PMMA Crown and Stainless Steel Crown for Primary Molar Teeth Using Dental Operating Microscope.
Article in International journal of clinical pediatric dentistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Background: Full-coverage restorations are essential for the long-term preservation of extensively carious primary molars. While preformed stainless steel crowns (P-SSCs) are the gold standard due to their durability, esthetic concerns have led to the development of alternative options such as preformed 3D-milled polymethylmethacrylate (P-PMMA) crowns, which offer improved appearance and marginal adaptation. Aim: To compare the clinical efficiency of P-PMMA crowns and P-SSCs in restoring mandibular second primary molars over a 6-month period in terms of gingival health, occlusal wear, and crown failure/dislodgement. Materials and methods: A randomized controlled clinical trial was conducted on 34 children aged 4-8 years with bilateral carious mandibular second primary molars. Using a split-mouth design, one molar received a P-SSC and the contralateral molar received a P-PMMA crown. Clinical evaluations were performed at baseline, 3 months, and 6 months. Parameters assessed included gingival health (using modified gingival index), occlusal wear (visual-tactile assessment), and crown retention. Data were analyzed using paired Results: Both crown types demonstrated satisfactory performance at 6 months. P-SSCs showed slightly higher retention rates, while P-PMMA crowns had better esthetic outcomes and comparable gingival health. No statistically significant differences were observed in occlusal wear between the groups. Conclusion: Preformed polymethylmethacrylate crowns are a clinically acceptable esthetic alternative to P-SSCs for mandibular second primary molars, showing comparable short-term performance with enhanced patient and parent satisfaction. How to cite this article: Shanmugaavel AK, Balakrishnan P, Nandhini T,
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