Use of 3D surface scanning to match facial shapes against altered exhumed remains in a context of forensic individual identification

Charlier, Philippe; Froesch, Philippe; Huynh-Charlier, Isabelle; Fort, Antoine; Hurel, Agathe; Jullien, Franz

doi:10.1007/s12024-014-9618-8

Cited by 14 publications

(5 citation statements)

References 9 publications

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“…Even if dental attrition could have been employed, such methods are incapable of yielding the precise age of 56 years reported by Charlier et al [1]. The authors employ a 3D methodology [6] to "face-match" the mandible against a statue of Saint Louis. This paper compares mortuary masks to the skull of known individuals and it is not appropriate to apply them to the remains of St. Louis as there is no guarantee that the statue is an accurate representation of the living king.…”

Section: Problems With Provenance and Methods Used For Authenticationmentioning

confidence: 99%

Comment on Charlier et al., 2019: “The Mandible of Saint-Louis (1270 AD): Retrospective diagnosis and circumstances of death”

Snoddy

Beaumont

Buckley

et al. 2020

Journal of Stomatology, Oral and Maxillofacial Surgery

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Section: Problems With Provenance and Methods Used For Authenticationmentioning

confidence: 99%

Comment on Charlier et al., 2019: “The Mandible of Saint-Louis (1270 AD): Retrospective diagnosis and circumstances of death”

Snoddy

Beaumont

Buckley

et al. 2020

Journal of Stomatology, Oral and Maxillofacial Surgery

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“…In accordance with the basic postulates in plastic and reconstructive surgery, the application method that allows an objective assessment of asymmetry is necessary regarding the purpose of objective assessment and postoperative facial asymmetry results. When talking about the characteristics of the skin cover, elasticity and skin quality are the most important, as well as the presence of possible comorbidity with skin exposure 24,25 .…”

Section: Discussionmentioning

confidence: 99%

“…In order to achieve a total good morphological-aesthetic result, it would be necessary to use the inductive-deductive, bidirectional and comprehensive approach. The quality of the skin in a similar way affected the overall morphologic-aesthetic re-sult as well as the elasticity, but it was a more dominant biological aspect in the healing phase of the wound 24,25 .…”

Section: Discussionmentioning

confidence: 99%

The influence of the skin tumors excision width in the postoperative facial asymmetry

2020

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Background/Aim. Planning an elliptical excision of the facial skin, caused by lines of minimum tension, is very important in order to achieve good aesthetic results. The width of the tumor excision affects the possibility of a direct closure of the post-excision defect. The aim of the study was to determine the minimum width of excision that does not affect postoperative symmetry of the face, in relation to the preoperative one, using an objective scanning method with a line laser scanner. Methods. The study included 50 patients of both sexes, older than 50 years, who had verified facial skin tumor and established medical indication for surgical elliptical excision and direct suture. All patients had laser scanning preoperatively, and then seven days and 90 days postoperatively, giving x, y, and z coordinates of 5 cephalometric points on the face, which determined the shape of the examined region. Patients were divided into three groups depending on the width of the excision (< 10 mm, 10-15 mm, > 15 mm). The shape of the examined region among different width of excision was compared, preoperatively, 7 days and 90 days postoperatively, using Procrustes analysis and analysis of the coordinates of cephalometric points. Results. Taking into account preoperative and postoperative x, y and z coordinates of the cephalometric points, statistically significant differences between the group of patients with the width excision < 10 mm and the other two groups (excision width 10-15 mm and > 15 mm) were found. Conclusion. The width of the skin tumors excision < 10 mm does not affect the postoperative facial asymmetry when a post-excisional defect is closed by direct suture.

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“…1,2 The 3D data can also be used for evaluation of part wear after use. [3][4][5][6] The 3D scanning has also been applied in forensics [7][8][9] and in medicine. 10,11 For all the cases mentioned above, the process is similar: the surfaces are scanned for evaluation and compared with a pattern, which may be either a digital model or any other scanned part/object.…”

Section: Introductionmentioning

confidence: 99%

“…Mendrˇicky´1 8 analyzed how seven commercial products (titanium dioxide and anti-reflective chalk sprays) affect the work-piece dimensions and the ease of coating removal. The author found that titanium dioxide yielded the thinnest layer (0.008 mm on average) but had the worst washability results.…”

Section: Introductionmentioning

confidence: 99%

Effects of different coating materials on three-dimensional optical scanning accuracy

Pereira

Penz

Silva

2019

Advances in Mechanical Engineering

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The processes of three-dimensional optical scanning depend on the reflection of the surface to be digitized. To scan specular or translucent surfaces, it is necessary to apply a coating material which interferes with the accuracy of the three-dimensional measurements. This study proposes the use of gold, silver, platinum, and carbon by sputtering to coat the surfaces to be scanned. The effects of these materials on the accuracy of the three-dimensional scanning were evaluated and compared with those of two frequently used materials, namely, talc and non-aqueous wet developer for penetrant testing. To verify the resulting geometric variations, specimens were scanned before and after the application of each coating material. The results showed that the intrinsic errors of the three-dimensional scanning process, such as the registration of several point clouds, can have more significant effects than the coating material used. Measurements taken from a single point cloud showed dimensional tolerances of approximately 0.01 mm for gold, platinum, and carbon coating. These coatings offer significantly higher accuracy than the traditionally used developer and are suggested for accurate three-dimensional scanning of specular and translucent surfaces.

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Use of 3D surface scanning to match facial shapes against altered exhumed remains in a context of forensic individual identification

Cited by 14 publications

References 9 publications

Comment on Charlier et al., 2019: “The Mandible of Saint-Louis (1270 AD): Retrospective diagnosis and circumstances of death”

Comment on Charlier et al., 2019: “The Mandible of Saint-Louis (1270 AD): Retrospective diagnosis and circumstances of death”

The influence of the skin tumors excision width in the postoperative facial asymmetry

Effects of different coating materials on three-dimensional optical scanning accuracy

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