A contact-free volumetric measurement of facial volume after third molar osteotomy: proof of concept

Brüllmann, Dan; Jürchott, Lena Marie; John, Christoph; Trempler, Christina; Schwanecke, Ulrich; Schulze, Ralf

doi:10.1016/j.oooo.2012.03.036

Cited by 5 publications

(6 citation statements)

References 15 publications

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“…SLS is a contact free method of scanning objects by determining their surface configuration and has been used for volume determination in humans. 12,13 Each tooth was individually mounted on a rotating platform with the video projector and camera facing it. The system was calibrated at a triangulation angle of 20.9°.…”

Section: Methodsmentioning

confidence: 99%

Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

et al. 2021

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The volumes of equine teeth may change considerably over time for several reasons including domestication, routine dental floating, and the hypsodont and anelodont nature of the teeth. Cone beam computed tomography (CBCT) of the head is routinely performed in standing horses and, in this proof of concept study, the feasibility of measuring tooth volume from CBCT datasets was determined. The CBCT images of 5 equine cadaver cheek teeth were segmented with a software 3-dimensional (3D) Slicer using a predefined protocol, corrected manually, and re-assembled into a 3D model. Individual tooth volume (VS) was calculated from the model. After extraction, the volumes were also measured using the “gold-standard” water displacement method (VW) for comparison. The VS of 77 teeth ranged from 7114 to 42,300 mm3 which strongly correlated with VW ( r = 0.99), and on average VS was 6.1% less than VW. There was no significant difference in VS between the right and left arcades in individual animals. Maxillary cheek tooth volume was on average 40% larger than it was for mandibular counterparts. Semi-automatic image segmentation of equine cheek teeth from CBCT data is feasible and accurate but requires some manual intervention. This preliminary study provides initial data on the volume of equine cheek teeth and creates new possibilities for future in vivo studies.

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Section: Methodsmentioning

confidence: 99%

Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

et al. 2021

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“…Several methods, mainly including contact measurement methods, have been used in the past 60 years to measure facial deformities of various types. [1,2] The linear measurement (contact) method is inexpensive, simple, non-invasive, and can be performed with flexible rulers. It has a high applicability and can detect edema in tissues with high accuracy.…”

Section: Introductionmentioning

confidence: 99%

“…It has a high applicability and can detect edema in tissues with high accuracy. However, the non-contact measurement method has been increasingly replacing it, although the newer methods often require complicated equipment for measurement to allow for the standard orientation of the head during photography and radiography [2,3]. Mathematical methods have also been applied to describe changes in the facial morphology [2,4].…”

Section: Introductionmentioning

confidence: 99%

“…However, the non-contact measurement method has been increasingly replacing it, although the newer methods often require complicated equipment for measurement to allow for the standard orientation of the head during photography and radiography [2,3]. Mathematical methods have also been applied to describe changes in the facial morphology [2,4]. Early (non-digital) stereophotogrammetry has been used to obtain linear measurements based on landmark positions [2,5,6].…”

Section: Introductionmentioning

confidence: 99%

“…Mathematical methods have also been applied to describe changes in the facial morphology [2,4]. Early (non-digital) stereophotogrammetry has been used to obtain linear measurements based on landmark positions [2,5,6].…”

Section: Introductionmentioning

confidence: 99%

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Reliability of the Linear Measurement (Contact) Method Compared with Stereophotogrammetry (Optical Scanning) for the Evaluation of Edema after Surgically Assisted Rapid Maxillary Expansion

et al. 2020

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Many techniques have been developed to evaluate facial swelling after maxillofacial surgeries. Patients who undergo surgically assisted rapid maxillary expansion (SARME) develop facial edema more often than those who undergo minor oral surgeries. Reliable systems to assess soft tissue dimensions offer many advantages for documentation and treatment planning across surgical fields. (1) Background: The objective assessment of facial swelling is advantageous as it allows the evaluation of the effect of anti-inflammatory drugs. Therefore, this study aimed to compare the reliabilities of linear measurement method and optical scanning for the objective assessment of facial swelling after SARME. (2) Methods: Sixteen (12 women and 4 men) patients were enrolled. Linear measurements between guide points and facial scans were obtained for the left and right sides preoperatively and 1, 2, and 5 days after SARME. Preoperative values were subtracted from each post-operative value and the differences were compared between the two measurement methods. (3) Results: There were no statistically significant differences between the right and left sides at any time point in the measurements with either method. (4) Conclusions: Recently, stereophotogrammetry has been considered the first choice method for evaluating facial swelling. Furthermore, we found a strong correlation between volumetric analysis and linear measurement at all time points and for both sides.

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Effect of drain application on postoperative complaints after surgical removal of impacted wisdom teeth—a randomized observer-blinded split-mouth clinical trial

et al. 2020

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A contact-free volumetric measurement of facial volume after third molar osteotomy: proof of concept

Cited by 5 publications

References 15 publications

Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

Semi-Automatic Segmentation of Cone Beam Computed Tomography Datasets for Volume Measurements of Equine Cheek Teeth

Reliability of the Linear Measurement (Contact) Method Compared with Stereophotogrammetry (Optical Scanning) for the Evaluation of Edema after Surgically Assisted Rapid Maxillary Expansion

Effect of drain application on postoperative complaints after surgical removal of impacted wisdom teeth—a randomized observer-blinded split-mouth clinical trial

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