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Evaluating the Accuracy of Two Complete Denture Impression Techniques Compared to Traditional Technique Using a Laboratory 3D Scanner
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A Mohammdpour Tahmtan    , Z Ghanavati * , F Shirgahi Talari |
| 2.Dental Materials Research Center, Health Research Institute, Babol University of Medical Sciences, Babol, I.R.Iran. , zahraghanavatiprostho@gmail.com |
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Abstract: (155 Views) |
Background and Objective: One of the important steps in making a complete denture is impression making, which is performed using different materials and techniques with differences in the accuracy of recording details, cost, time, etc. Using a technique that is simple yet accurate is beneficial for dentists and patients. The present study was conducted to evaluate the accuracy of two complete denture impression techniques compared to traditional technique using a laboratory 3D scanner.
Methods: This quasi-experimental study was conducted using impressions taken from the maxilla of 12 randomly selected patients. For each patient, impressions were taken using three techniques: traditional (zinc oxide eugenol) as the reference and comparative techniques (alginate and compression silicone). To compare the techniques, a laboratory 3D scanner and an analysis software were used which expressed the difference between the two surfaces in millimeters (mm). The mean results obtained from comparing each technique with the reference technique were expressed for the entire jaw surface and also for different areas.
Findings: In examining the surface of the impression, the difference with the traditional technique was 0.56±0.14 mm for alginate and 0.491±0.136 mm for silicone. In the border area, obtained values were 1.303±0.423 mm for alginate and 1.119±0.318 mm for silicone. The side alginate and posterior palatal seal areas in both techniques showed a median difference of about 0.5 mm, and the side silicone, alveolar ridge and central sulcus areas in both techniques showed a smaller difference (about 0.2 mm) (p≤0.001).
Conclusion: The results of the study showed that alginate and compression silicone technique are more accurate in impression making compared to the traditional technique.
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| Keywords: Oral Impression Technique, Complete Denture, Software Analysis, 3D Scanning. |
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Full-Text [PDF 295 kb]
(33 Downloads)
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Type of Study: Dicscriptive |
Subject:
Dentistry (prosthetics)
Received: 2024/04/3 | Accepted: 2024/10/12 | Published: 2025/11/30
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