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- DOI 10.18231/j.jds.70016.1759125422
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CrossMark
Comparative evaluation of marginal fit, prosthodontic and patient centered outcomes of milled zirconia crown using conventional and digital impression techniques – A split mouth, randomized clinical trial
- Author Details:
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Neha Singla
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Pankaj Datta *
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Gita Rani
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Siddhi Tripathi
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Nupur Chaudhary
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Sunil Pal
Neha Singla
Pankaj Datta *
Gita Rani
Siddhi Tripathi
Statement of problem: Advancements in restorative dentistry, especially all-ceramic restorations, have improved aesthetics, biocompatibility, and durability. The emergence of digital impression techniques has sparked debate over their clinical efficiency and accuracy compared to conventional methods in fabricating zirconia crowns.
Objectives: 1. To evaluate the marginal fit of zirconia crowns fabricated using conventional and digital impressions; 2. To assess prosthodontic outcomes between the two techniques; 3. To compare patient-centered outcomesacross both groups.
Materials and Methods: Twenty-one patients requiring zirconia crowns for contralateral mandibular posteriorteeth were selectedand divided into two groups: Group A (conventional impression) and Group B (digital impression). Crowns were fabricated using CAD/CAM. Marginal fit was assessed using a stereomicroscope (40X magnification), prosthodontic outcomes via USPHS criteria, and patient satisfaction using a Visual Analog Scale (VAS). Data were analysed with SPSS v26 (p < 0.05).
Results: Digital impressions resulted in superior marginal fit, better occlusal contacts, and improved colour matching. Patient satisfaction was higher in the digital group. Both groups produced clinically acceptable crowns, but digital impressions showed fewer marginal discrepancies and better overall prosthodontic outcomes.
Conclusion: Digital impression techniques offer greater accuracy, efficiency, and patient comfort compared to conventional methods. Given their superior performance in key clinical parameters, they represent a preferred approach in contemporary prosthodontic practice.
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