Development of complete dentures based on digital intraoral impressions—Case report

Fang, Jing Huan; An, Xueyin; Jeong, Seung Mi; Choi, Byung Ho

doi:10.1016/j.jpor.2017.05.005

Cited by 37 publications

(19 citation statements)

References 10 publications

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“…To date, the use of optical impressions in removable prosthodontics derives from a growing interest in a complete digital workflow for the production of complete dentures [14][15][16][17][18]. Although a few anecdotal studies discussed the use of optical impressions on fully edentulous arches [31,32], according to Mangano et al [33], to date the use of IOSs is contraindicated for the fabrication of complete removable dentures.…”

Section: Discussionmentioning

confidence: 99%

“…In the last years, there has been growing interest in a full-digital concept of complete dentures focusing on the use of optical impressions in the field of removable prosthodontics [14][15][16][17][18]. The protocol for a digitally produced complete denture starts with the digitization of an edentulous arch that can be performed using intraoral or laboratory scanners.…”

Section: Introductionmentioning

confidence: 99%

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Accuracy of Three Impression Materials on the Totally Edentulous Maxilla: In Vitro/In Silico Comparative Analysis

et al. 2020

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Background: This study was aimed at comparing the accuracy of impressions of a reference typodont (RT) reproducing a totally edentulous maxilla made with three impression materials: polysulfide, polyether, and polyvinyl-siloxane. Methods: The RT was scanned using a desktop scanner, obtaining a reference scan. Ten impressions for each of the three tested materials were made using a mechanical device with a standardized and consistent modality. A laboratory scanner performed the digitization of each impression. We produced digital models by processing “in reverse” the scans of the physical impressions using a dedicated software, obtaining three groups (n = 10), respectively. The groups were titled: “polysulfide,” “polyvinyl-siloxane,” and “polyether”. The scans in .stl format were imported into Geomagic Control X and then compared to RT to evaluate the accuracy of each scan by calculating trueness and precision in µm. Recorded data were subjected to descriptive statistics. Results: Trueness (arithmetic proximity) values (95%CI) were: polysulfide = 249.9 (121.3–378.5), polyvinyl-siloxane = 216.8 (123.1–310.6), polyether = 291.1 (219.9–362.3). Precision values (95% CI) were: polysulfide = 261.9 (108.8–415), polyvinyl-siloxane = 209.4 (111.9–306.8), polyether = 283 (227.9–338.1). Statistically significant differences were not detected between the means of the experimental groups, both for trueness and precision. Conclusions: The accuracy of the scans obtained from polyvinyl-siloxane, polysulfide, and polyether impressions can be considered comparable in a fully edentulous maxilla.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Accuracy of Three Impression Materials on the Totally Edentulous Maxilla: In Vitro/In Silico Comparative Analysis

et al. 2020

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“…In order to directly obtain digital intraoral impressions of the maxilla, the operator used his left-hand thumb and forefinger to retract the lip, cheeks and vestibule, exposing the greatest amount of the surface area of the vestibule; then a second operator separated the upper and the lower jaws using their fore and middle fingers as bite blocks and, with the other hand, cleaned and dried the area to be scanned with a sterile gauze. Considering the dimension of the scanner (CS 3600, Carestream Dental, Atlanta, GA, USA) head compared to the small patient mouth, the IOS itself acted as a bite block during the scanning procedure, which was performed quickly by rotating it from left to right on the palatal side and then sliding it along the edentulous ridge vestibular aspect from the right to the left distobuccal areas [34]. The scanner head was pre-heated, dipping it, while still in the sealed sterile envelope, in 38 • C water; the entire impression procedure took less than thirty seconds.…”

Section: Methodsmentioning

confidence: 99%

Evaluation of a Digital Protocol for Pre-Surgical Orthopedic Treatment of Cleft Lip and Palate in Newborn Patients: A Pilot Study

et al. 2019

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The aim of this study was to evaluate the accuracy, invasiveness and impact on clinical results of a digital oral impression protocol in the pre-surgical orthopedic treatment (PSOT) of newborn cleft lip and palate (CLP) patients undergoing primary alveolar surgical repair. Six patients were divided, according to impression technique used, into a digital (intraoral scanner (IOS)) and a non-digital (tray and putty (T&P)) group. Parents considered IOS impressions to be less invasive, compared to T&P impressions. The clinician that took all the impressions considered the IOS to be less stressful compared to the T&P method. In two T&P patients, the impression was repeated because some important anatomical details were missing, in one case due to patient regurgitation during the first attempt. No impression was repeated, and any adverse event was reported in the IOS group. There were no significant differences between these two protocols in pre-surgical alveolar gap reduction and surgical challenge. The study results indicate that this digital protocol can accelerate the production process of the passive molding plate with an instantaneous transmission of the digital impression to the dental lab, maintaining the same accuracy level and clinical outcomes of classical techniques and reducing the invasiveness of impression taking, avoiding any risk of impression material ingestion or inhalation.

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“…Therefore, a comparative study on the differences between impressions obtained through the various techniques is needed. Studies including a digitized device and software have been reported;22232425 the method employed was to scan the target objects using a scanner and overlay the acquired images using software in order to compare the differences 25. The technique of superimposition is simple, reliable, and has been used in several recent studies 2627.…”

Section: Introductionmentioning

confidence: 99%

Comparison of different impression techniques for edentulous jaws using three-dimensional analysis

et al. 2019

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PURPOSE The purpose of this study was to compare two novel impression methods and a conventional impression method for edentulous jaws using 3-dimensional (3D) analysis software. MATERIALS AND METHODS Five edentulous patients (four men and one woman; mean age: 62.7 years) were included. Three impression techniques were used: conventional impression method (CI; control), simple modified closed-mouth impression method with a novel tray (SI), and digital impression method using an intraoral scanner (DI). Subsequently, a gypsum model was made, scanned, and superimposed using 3D analysis software. Mean area displacement was measured using CI method to evaluate differences in the impression surfaces as compared to those values obtained using SI and DI methods. The values were confirmed at two to five areas to determine the differences. CI and SI were compared at all areas, while CI and DI were compared at the supporting areas. Kruskal-Wallis test was performed for all data. Statistical significance was considered at P value <.05. RESULTS In the comparison of the CI and SI methods, the greatest difference was observed in the mandibular vestibule without statistical significance ( P >.05); the difference was < 0.14 mm in the maxilla. The difference in the edentulous supporting areas between the CI and DI methods was not significant ( P >.05). CONCLUSION The CI, SI, and DI methods were effective in making impressions of the supporting areas in edentulous patients. The SI method showed clinically applicability.

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Development of complete dentures based on digital intraoral impressions—Case report

Abstract: This case demonstrated how digital complete dentures can be made without requiring conventional stone models or mounting the models in an articulator.

Cited by 37 publications

References 10 publications

Accuracy of Three Impression Materials on the Totally Edentulous Maxilla: In Vitro/In Silico Comparative Analysis

Accuracy of Three Impression Materials on the Totally Edentulous Maxilla: In Vitro/In Silico Comparative Analysis

Evaluation of a Digital Protocol for Pre-Surgical Orthopedic Treatment of Cleft Lip and Palate in Newborn Patients: A Pilot Study

Comparison of different impression techniques for edentulous jaws using three-dimensional analysis

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