Lecturer of prosthodontics, Department of Prosthodontics, Faculty of Dentistry, Tanta University, Tanta, Egypt
10.21608/edj.2025.405046.3558
Abstract
Aim: The purpose of this study is to compare the effect of different impression techniques for distal extension removable partial dentures in achieving optimal tissue placement. Material & methods: Eight patients were selected from a prosthodontics outpatient clinic with mandibular bilateral distal extension ridges. Four final impressions were made for each patient (single-step full arch impression as reference, intraoral scan, elastomeric 2-step, and altered cast impression). The produced casts were scanned and superimposed for comparison using Geomagic software. The 3D deviations were measured at different anatomical areas. The RMS, AVG., and +AVG. of cast surfaces at each area were calculated. A Kruskal–Wallis test was performed to compare different casts in various areas. Results: Significant differences were found in RMS and -AVG. Overall data in IOS compared to other techniques. For +AVG., the altered cast technique showed significantly higher values at area 1. Conclusion: Intraoral scanning can replace mucostatic impressions in partially edentulous distal extension arches. The new 2-step elastomeric impression technique presents an acceptable alternative to the more complex altered cast impression.
Salem, A., & amer, M. (2025). Digital evaluation of the effect of different impression techniques on mucosal deformation in distal extension ridges: a clinical controlled trial. Egyptian Dental Journal, 71(4), 3313-3320. doi: 10.21608/edj.2025.405046.3558
MLA
Amal A Salem; marwa M amer. "Digital evaluation of the effect of different impression techniques on mucosal deformation in distal extension ridges: a clinical controlled trial", Egyptian Dental Journal, 71, 4, 2025, 3313-3320. doi: 10.21608/edj.2025.405046.3558
HARVARD
Salem, A., amer, M. (2025). 'Digital evaluation of the effect of different impression techniques on mucosal deformation in distal extension ridges: a clinical controlled trial', Egyptian Dental Journal, 71(4), pp. 3313-3320. doi: 10.21608/edj.2025.405046.3558
VANCOUVER
Salem, A., amer, M. Digital evaluation of the effect of different impression techniques on mucosal deformation in distal extension ridges: a clinical controlled trial. Egyptian Dental Journal, 2025; 71(4): 3313-3320. doi: 10.21608/edj.2025.405046.3558