Accuracy of five intraoral scanners compared to indirect digitalization

Güth, Jan‐Frederik; Runkel, Cornelius; Beuer, Florian; Stimmelmayr, Michael; Edelhoff, Daniel; Keul, Christine

doi:10.1007/s00784-016-1902-4

Cited by 169 publications

(158 citation statements)

References 15 publications

Supporting

Mentioning

144

Contrasting

Unclassified

Order By: Relevance

“…The precision of the digital model was determined by the accuracy of the scanner. For the accuracy analysis of the digital model, a previously introduced method was utilized (Mitsopoulou et al, ; Guth et al, ). The results indicated that most deviations within the digital models were small.…”

Section: Discussionmentioning

confidence: 99%

“…Using the “deviation analyzing” function, the three‐dimensional Euclidean distances (EDs) for point clouds were calculated, using positive or negative values in relation to the reference dataset. Deviations between the test and reference datasets were given as the following parameters: positive deviation, negative deviation, average deviation, and standard deviation (Guth et al, ). Geomagic thereafter exported an analysis report displayed in a color‐map deviation spectrum to indicate differences in overall surface geometry.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Production of accurate skeletal models of domestic animals using three‐dimensional scanning and printing technology

Liu

Song

et al. 2017

Anatomical Sciences Ed

View full text Add to dashboard Cite

Access to adequate anatomical specimens can be an important aspect in learning the anatomy of domestic animals. In this study, the authors utilized a structured light scanner and fused deposition modeling (FDM) printer to produce highly accurate animal skeletal models. First, various components of the bovine skeleton, including the femur, the fifth rib, and the sixth cervical (C6) vertebra were used to produce digital models. These were then used to produce 1:1 scale physical models with the FDM printer. The anatomical features of the digital models and three-dimensional (3D) printed models were then compared with those of the original skeletal specimens. The results of this study demonstrated that both digital and physical scale models of animal skeletal components could be rapidly produced using 3D printing technology. In terms of accuracy between models and original specimens, the standard deviations of the femur and the fifth rib measurements were 0.0351 and 0.0572, respectively. All of the features except the nutrient foramina on the original bone specimens could be identified in the digital and 3D printed models. Moreover, the 3D printed models could serve as a viable alternative to original bone specimens when used in anatomy education, as determined from student surveys. This study demonstrated an important example of reproducing bone models to be used in anatomy education and veterinary clinical training. Anat Sci Educ 11: 73-80. © 2017 American Association of Anatomists.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Production of accurate skeletal models of domestic animals using three‐dimensional scanning and printing technology

Liu

Song

et al. 2017

Anatomical Sciences Ed

View full text Add to dashboard Cite

show abstract

“…Intraoral scanners were first introduced more than 30 years ago (Duret & Preston, ). Since then, continuous steps have been taken towards their development and nowadays, with the improvements implemented by new devices and software (Mangano, Gandolfi, Luongo, & Logozzo, ), together with social acceptance of these new technologies, conventional impressions are being replaced by digital ones (Güth, Keul, Stimmelmayr, Beuer, & Edelhoff, ; Güth et al, ).…”

Section: Introductionmentioning

confidence: 99%

Accuracy of digital impressions for implant‐supported complete‐arch prosthesis, using an auxiliary geometry part—An in vitro study

Iturrate

Eguiraun

2019

Clinical Oral Implants Res

View full text Add to dashboard Cite

Objectives The aim of this study was to evaluate the accuracy of complete‐arch digital impressions for fabrication of an implant‐supported prosthesis in the edentulous maxilla using an auxiliary geometry part. Materials and methods A replica of the upper jaw of an edentulous patient with four scannable impression copings was fabricated in stainless steel. This model was scanned with an industrial non‐contact 3D structured blue light 3D scanner, and the measurements of three reference distances were established as reference values. Subsequently, the model was scanned in two different scenarios (with or without an auxiliary geometry part put in place and fixed to the model) using three intraoral scanners. Measurements were taken with 3D inspection software, and a digital impression of the complete arch was built with mesh processing software by combining 2 STL files obtained with an intraoral scanner. Results All measurements with the auxiliary geometry part gave significantly more accurate results (p < .05). Trueness improved in the three reference distances, reaching values of 8 ± 6 µm at D12 reference distance, 20 ± 11 µm at D13 and 35 ± 22 µm at D14. Precision also improved significantly with the use of the auxiliary geometry part placed on the model (p < .05). The best precision results at reference distances D13 and D14 were obtained with the True Definition Scanner. Conclusions The proposed methodology significantly improves the accuracy of complete‐arch digital impressions in edentulous patients obtained in vitro, regardless of which scanner is used.

show abstract

“…Today, engineering technologies such as computer‐aided design/computer‐assisted manufacture have advanced at high speed in dental medicine . These methods require the use of stereolithography (STL) files which can be acquired with an intraoral scanner (IOS), or extraorally using a stone cast poured from a conventional impression and digitalized via laboratory scanner …”

Section: Introductionmentioning

confidence: 99%

“…8,10,11 These methods require the use of stereolithography (STL) files which can be acquired with an intraoral scanner (IOS), 12,13 or extraorally using a stone cast poured from a conventional impression and digitalized via laboratory scanner. 14…”

mentioning

confidence: 99%

Soft tissue replication in single unit implant impressions—A three dimensional clinical study

Marques

Pinto

Alves

et al. 2019

J Esthet Restor Dent

View full text Add to dashboard Cite

Objective Comparison of soft tissue replication between conventional and digital impressions for definitive single unit implant rehabilitation in the esthetic zone. Materials and Methods Six patients were recruited according to inclusion criteria for this cross‐over pilot study and submitted to a conventional silicone implant impression with customized coping and a digital impression with an intraoral scanner. Stereolithography files obtained from the same patient were superimposed with appropriate software and trueness evaluated between methods at predetermined locations (56 in hard and soft tissues and 18 in the emergence profile, per patient). Results were presented as mean root mean square (RMS) ± 95% confidence interval and effect size calculated with Hedges' g ± 95%. Mann‐Whitney and Kruskal‐Wallis were performed when appropriate and α was set at .05. Results Trueness between methods equated to 51.08[45.68;56.47] μm and 60.46[52.29;68.62] μm in hard and soft tissues, respectively. Soft tissue replication by intraoral scanner acquisition corresponded to a statistically significant RMS of 243.89[209.15;278.63] μm equating to a Hedges' g of 1.52[1.22;1.82] which corresponded to a large effect size. Conclusions The proposed method could be considered for soft tissues assessment and the results suggest that intraoral impression techniques produce statistically significant changes in peri‐implant soft tissue replication, although below the clinically detectable threshold. Clinical Significance The proposed technique allows for the 3D determination of peri‐implant tissues changes in digital models with higher sensitivity than visual techniques, thus presenting itself as a promising alternative in clinical studies and that the use of an intraoral scanner obtained significant differences in the soft tissue emergence profile replication when compared with the gold standard.

show abstract

Accuracy of five intraoral scanners compared to indirect digitalization

Abstract: Regarding the accuracy, all tested intraoral scanning technologies seem to be able to reproduce a single quadrant within clinical acceptable accuracy. However, differences were detected between the tested systems.

Cited by 169 publications

References 15 publications

Production of accurate skeletal models of domestic animals using three‐dimensional scanning and printing technology

Production of accurate skeletal models of domestic animals using three‐dimensional scanning and printing technology

Accuracy of digital impressions for implant‐supported complete‐arch prosthesis, using an auxiliary geometry part—An in vitro study

Soft tissue replication in single unit implant impressions—A three dimensional clinical study

Contact Info

Product

Resources

About