Stable region for maxillary dental cast superimposition in adults, studied with the aid of stable miniscrews

Chen, G; Chen, Siyuan; Xy, Zhang; Jiang, R. P.; Liu, Y; Shi, FH; Xu, Tao

doi:10.1111/j.1601-6343.2011.01510.x

Cited by 106 publications

(133 citation statements)

References 28 publications

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“…Various techniques have been proposed so far for superimposing 3D digital casts 3–5 . Two studies in non-growing patients that used miniscrews as a gold standard superimposition reference suggested the medial part of the third rugae and a small region dorsal to it as a stable superimposition reference 3, 4 .…”

Section: Introductionmentioning

confidence: 99%

Assessment of different techniques for 3D superimposition of serial digital maxillary dental casts on palatal structures

Vasilakos

Schilling

Halazonetis

et al. 2017

Sci Rep

137

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Serial 3-dimensional dental model superimposition provides a risk-free, detailed evaluation of morphological alterations on a patient’s mouth. Here, we evaluated accuracy and precision of five palatal areas, used for superimposition of maxillary 3D digital dental casts. Sixteen pre- and post-orthodontic treatment dental casts of growing patients (median time lapse: 15.1 months) were superimposed on each palatal area using the iterative closest point algorithm. Area A (medial 2/3 of the third rugae and a small area dorsal to them) was considered the gold standard, due to high anatomical stability. Areas B, C, and D added a distal extension along the midpalatal raphe, an anterior extension to the second rugae, and the remaining palatal surface, respectively. Area E was similar to A, located more posteriorly. Non parametric multivariate models showed minimal or no effect on accuracy and precision by operator, time point, or software settings. However, the choice of superimposition area resulted in statistically significant differences in accuracy and clinically significant differences in detected tooth movement (95% limits of agreement exceeding 1 mm and 3°). Superimposition on area A provided accurate, reproducible, and precise results. Outcomes were comparable for area B, but deteriorated when alternative areas were used.

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Section: Introductionmentioning

confidence: 99%

Assessment of different techniques for 3D superimposition of serial digital maxillary dental casts on palatal structures

Vasilakos

Schilling

Halazonetis

et al. 2017

Sci Rep

137

View full text Add to dashboard Cite

show abstract

“…In a study, the maxillary digital models were superimposed on stable miniscrews in extraction patients, and it was stated that the palatal rugae region is stable and could be included for alignment to evaluate orthodontic tooth movements. 28,29 This area was found to be stable throughout a person's lifetime and also has been used for establishing identity in forensics. 15 The validity of this method was evaluated in extraction patients 22 and even in patients treated with orthopedic appliances such as rapid maxillary expansion and maxillary protraction headgear.…”

Section: Discussionmentioning

confidence: 97%

Three-dimensional analysis of tooth movements after palatal miniscrew-supported molar distalization

Duran

Görgülü

Di̇ndaroğlu

2016

American Journal of Orthodontics and Dentofacial Orthopedics

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“…25,26 In previous studies, pretreatment and posttreatment maxillary digital dental casts were superimposed to analyze tooth movement patterns in extraction patients. 16,17 In this study, similar methods were used to superimpose and analyze the T1 and T3 scans.…”

Section: Discussionmentioning

confidence: 99%

“…The junction of the incisive papilla and the palatine raphe served as the origin (0, 0, 0), resulting in an x-, y-, and z-axis and three planes (Figure 2). 16,17 Three-dimensional model superimposition. To measure orthodontic tooth movement, digital maxillary casts T1 and T3 were registered using the iterative closest point (ICP) method, 18 in which initial rotation and translation scans are estimated using the 3D palatal vault region (PVR).…”

Section: Measurements Of the Three-dimensional Virtual Maxillary Modelsmentioning

confidence: 99%

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A pilot clinical study of Class III surgical patients facilitated by improved accelerated osteogenic orthodontic treatments

Jiang

et al. 2015

The Angle Orthodontist

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Objective: To evaluate if the improved accelerated osteogenic orthodontics (IAOO) procedure could speed Class III surgical patients' preoperative orthodontic treatment duration and, if yes, to what extent. This study was also designed to determine whether or not an IAOO procedure affects the tooth-moving pattern during extraction space closure. Materials and Methods: The samples in this study consisted of 24 Class III surgical patients. Twelve skeletal Class III surgery patients served as an experimental group (group 1) and the others as a control group (group 2). Before treatment, the maxillary first premolars were removed. For group 1, after the maxillary dental arch was aligned and leveled (T2), IAOO procedures were performed in the maxillary alveolar bone. Except for this IAOO procedure in group 1, all 24 patients experienced similar combined orthodontic and orthognathic treatment. Study casts of the maxillary dentitions were made before orthodontic treatment (T1) and after extraction space closure (T3). All of the casts were laser scanned, and the amount of movement of the maxillary central incisor, canine, and first molar, as well as arch widths, were digitally measured and analyzed by using the three-dimensional model superimposition method. Results: The time durations T3-T2 were significantly reduced in group 1 by 8.65 6 2.67 months and for T3-T1 were reduced by 6.39 6 2.00 months (P , .001). Meanwhile, the tooth movement rates were all higher in group 1 (P , .05). There were no significant differences in the amount of teeth movement in the sagittal, vertical, and transverse dimensions between the two groups (P . .05). Conclusion: The IAOO can reduce the surgical orthodontic treatment time for the skeletal Class III surgical patient by more than half a year on average. The IAOO procedures do not save anchorage. (Angle Orthod. 2015;85:616-624.)

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Stable region for maxillary dental cast superimposition in adults, studied with the aid of stable miniscrews

Abstract: The medial 2/3 of the third rugae and the regional palatal vault dorsal to it is a stable region to register 3D digital models for evaluation of orthodontic tooth movement in adult patients.

Cited by 106 publications

References 28 publications

Assessment of different techniques for 3D superimposition of serial digital maxillary dental casts on palatal structures

Assessment of different techniques for 3D superimposition of serial digital maxillary dental casts on palatal structures

Three-dimensional analysis of tooth movements after palatal miniscrew-supported molar distalization

A pilot clinical study of Class III surgical patients facilitated by improved accelerated osteogenic orthodontic treatments

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