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Immediate impression method in digital workflow as good as staged impression method for single-unit implants in posterior area: Study
Immediate impression method in the digital workflow as good as the staged impression method for single-unit implants in the posterior area suggests a new study published in the Journal of Prosthodontics.
This clinical study compares immediate and staged impression methods in a complete digital workflow for single-unit implants in the posterior area. Sixty patients requiring single-unit implant crowns were enrolled. Forty patients were assigned to the test group, immediate digital impression after implant surgery with crown delivery 4 months later. The remaining 20 patients were assigned to the control group, staged digital impressions 4 months after implant surgery, and crown delivery 1 month later. Both workflows involved free-model CAD-CAM crown fabrications. The crowns were scanned before and after clinical adjustment using an intraoral scanner (TRIOS Color; 3Shape).
Two 3D digital models were trimmed and superimposed to evaluate the dimensional changes using Geomagic Control software. Chairside times for the entire workflow were recorded. Kruskal–Wallis was performed to compare crown adjustments between two groups, while one-way ANOVA was used to compare chairside time durations between the test and control groups. Results: All crowns were delivered without refabrication. The average maximum occlusion adjustment of crowns was−353.2±207.1μm in the test group and−212.7±150.5μm in the control group (p=0.02). The average area of occlusal adjustment, measured as an area of deviation larger than 100μm, was 14.8±15.3 and8.4±8.1 mm2in the test and control groups, respectively (p=0.056). There were no significant differences in the mesial and distal contact adjustment amounts, or the maximum deviations of the proximal area, between the two groups. The mean chair-side time was 50.25±13.48 and 51.20±5.34 min in the test and control groups, respectively (p=0.763). The immediate impression method in the digital workflow for single-unit implants required more occlusal adjustments of crowns but showed similar chairside-times compared to the staged impression method.
Reference:
Ren S, Jiang X, Lin Y, Di P.Crown adjustment and chairside efficiency ofsingle-unit restorations fabricated from immediate andstaged impressions using a digital workflow forposterior implants. J Prosthodont. 2024;1–8.https://doi.org/10.1111/jopr.13851
Keywords:
Immediate, impression method, digital workflow, good, staged impression, method, single-unit, implants, posterior area, study, Scrown accuracy, digital workflow, immediate digital impression
Dr. Shravani Dali has completed her BDS from Pravara institute of medical sciences, loni. Following which she extensively worked in the healthcare sector for 2+ years. She has been actively involved in writing blogs in field of health and wellness. Currently she is pursuing her Masters of public health-health administration from Tata institute of social sciences. She can be contacted at editorial@medicaldialogues.in.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751