Accuracy and reliability of mandibular digital model registration with use of the mucogingival junction as the reference

Ioshida, Marcos; Muñoz, Brian Andres; Ríos, Héctor F.; Cevidanes, Lucia; Aristizabal, Juan Fernando; Rey, Diego; Kim‐Berman, Hera; Yatabe, Marília; Benavides, Erika; Álvarez, María Antonia; Volk, Sarah; Ruellas, Antônio Carlos de Oliveira

doi:10.1016/j.oooo.2018.10.003

Cited by 25 publications

(40 citation statements)

References 26 publications

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“…Previous studies described an excellent reproducibility for digital measurements in DDM and CBCT. 10,20,27,[31][32][33][34] The results from this present study confirm those findings for 3D dental linear displacements with similar values for DDM and CBCT methods, as measured at the mesiobuccal cusp of the first molars, canine tip and incisal surface of the incisors.…”

Section: Discussionsupporting

confidence: 89%

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Comparison of linear and angular changes assessed in digital dental models and cone‐beam computed tomography

Massaro

Losada

Cevidanes

et al. 2019

Orthod Craniofacial Res

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Objective-To compare the three-dimensional (3D) linear displacements and the mesiodistal and buccolingual angulation changes after orthodontic treatment in digital dental models (DDMs) and 3D models derived from cone-beam computed tomography (CBCT). Settings and Sample Population-Digital dental model and CBCT scans were selected from 24 adults who had undergone orthodontic treatment for mandibular anterior crowding. Material and Methods-3D linear displacements and changes in angular measurements (mesiodistal and buccolingual angulation) were assessed in pre-and posttreatment DDM and CBCT images using the software ITK-snap and 3D SlicerCMF. Intra-and inter-rater agreement of measurements in DDM and CBCT were tested using the intraclass correlation coefficient (ICC).

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Section: Discussionsupporting

confidence: 89%

“…For the approximation step, mesiobuccal cusp of second molar, buccal cusp of the second premolar and canine tip on the left and right sides were used. 27 The registration was performed using landmarks at the centre of the buccal surface of all teeth in both CBCT and digital dental models at T1 27 ;…”

mentioning

confidence: 99%

Comparison of linear and angular changes assessed in digital dental models and cone‐beam computed tomography

Massaro

Losada

Cevidanes

et al. 2019

Orthod Craniofacial Res

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“…As the width of keratinized gingiva reflects the position of the mucogingival junction, the result indicated that even in mild periodontitis, inflammation can affect soft tissue beyond the mucogingival junction, particularly in sextants with greater PD than KW, which accounted for approximately 37.0% of all sextants. The mucogingival junction remains stable even if the gingiva is apically repositioned [34], and using it as an alignment reference has been confirmed to be reliable [35]. The current result showed that "stable" means a relative constant position in the coronal-apical direction, rather than in the buccal-lingual direction.…”

Section: Discussionsupporting

confidence: 56%

“…Reference best fit alignment produced significantly lower alignment errors and truer measurements [18]. Thus, the greatest challenge in aligning digital models of different models or different time points is to identify a stable structure that can be used as a reference [24]. Teeth could be used as such a reference given the lack of mobility in Group H, and mobility less than I° before and after treatments in Group P [25,26].…”

Section: Discussionmentioning

confidence: 99%

Digital assessment of gingiva morphological changes and related factors after initial periodontal therapy

2021

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Purpose: To establish a digital assessment method for changes in gingiva morphology following initial periodontal therapy. Methods: Ten periodontal-healthy participants were selected, and digital models obtained by intraoral scanning and digitizing conventional impressions. Using dentition as a reference, best fit alignment between digital models was carried out. Root mean square (RMS) was calculated to evaluate differences in models, and gingival volume discrepancy (GVD) was calculated after combining separated models. Trueness of intraoral scanning used on the gingiva was evaluated using RMS and GVD between intraoral and conventional models with conventional models as references; precision was evaluated among different intraoral models of one participant. Twenty-three periodontitis-affected participants underwent intraoral scanning immediately after supragingival scaling and two weeks after initial periodontal therapy. The GVD of gingiva between two digital models was calculated to assess gingival changes and related factors after therapy. Results: Trueness of intraoral scanning used on the entire gingiva was 83.65 ± 14.43 μm; precision was 70.71 ± 25.58 μm; GVD error measured by digital models was 15.28 ± 10.00 mm³. Gingival volume in periodontitis-affected participants decreased 104.04-1155.09 mm³ after therapy. Probing depth, bleeding index, and keratinized gingival width positively correlated with changes in gingival volume. Conclusion: Intraoral scanning can be recommended as a method of evaluating morphological changes in gingiva.

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“…2021, 11, x FOR PEER REVIEW 10 of 13 also be used in dental offices in combination with 3D data to the CBCT and the patients (Figure 4). The superimposition of CBCT and digital motion scans can be achieved by the use of the mucogingival junction as a reference as described by Ioshida et al [31]. The visualization of the movement of the craniofacial structures avoids the necessity of performing more complicate and expensive exams as dynamic RMI and could offer a new The superimposition of CBCT and digital motion scans can be achieved by the use of the mucogingival junction as a reference as described by Ioshida et al [31].…”

Section: Discussionmentioning

confidence: 99%

In Vitro and In Vivo Assessment of a New Workflow for the Acquisition of Mandibular Kinematics Based on Portable Tracking System with Passive Optical Reflective Markers

et al. 2021

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Clinical use of portable optical tracking system in dentistry could improve the analysis of mandibular movements for diagnostic and therapeutic purposes. A new workflow for the acquisition of mandibular kinematics was developed. Reproducibility of measurements was tested in vitro and intra- and inter-rater repeatability were assessed in vivo in healthy volunteers. Prescribed repeated movements (n = 10) in three perpendicular directions of the tracking-device coordinate system were performed. Measurement error and coefficient of variation (CV) among repetitions were determined. Mandibular kinematics of maximum opening, left and right laterality, protrusion and retrusion of five healthy subjects were recorded in separate sessions by three different operators. Obtained records were blindly examined by three observers. Intraclass correlation coefficient (ICC) was calculated to estimate inter-rater and intra-rater reliability. Maximum in vitro measurement error was 0.54 mm and CV = 0.02. Overall, excellent intra-rater reliability (ICC > 0.90) for each variable, general excellent intra-rater reliability (ICC = 1.00) for all variables, and good reliability (ICC > 0.75) for inter-rater tests were obtained. A lower score was obtained for retrusion with “moderate reliability” (ICC = 0.557) in the inter-rater tests. Excellent repeatability and reliability in optical tracking of primary movements were observed using the tested portable tracking device and the developed workflow.

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Accuracy and reliability of mandibular digital model registration with use of the mucogingival junction as the reference

Cited by 25 publications

References 26 publications

Comparison of linear and angular changes assessed in digital dental models and cone‐beam computed tomography

Comparison of linear and angular changes assessed in digital dental models and cone‐beam computed tomography

Digital assessment of gingiva morphological changes and related factors after initial periodontal therapy

In Vitro and In Vivo Assessment of a New Workflow for the Acquisition of Mandibular Kinematics Based on Portable Tracking System with Passive Optical Reflective Markers

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