Three-dimensional changes of scleral show after surgical treatment of endocrine orbitopathy

INTRODUCTION: This study assessed the three-dimensional changes in the dental arch of patients submitted to orthodontic-surgical treatment for correction of Class II malocclusions at three different periods. METHODS: Landmarks previously identified on upper and lower dental casts were digitized on a three-dimensional digitizer MicroScribe-3DX and stored in Excel worksheets in order to assess the width, length and depth of patient's dental arches. RESULTS: During orthodontic preparation, the maxillary and mandibular transverse dimensions measured at the premolar regions were increased and maintained throughout the follow-up period. Intercanine width was increased only in the upper arch during orthodontic preparation. Maxillary arch length was reduced during orthodontic finalization, only. Upper and lower arch depths were stable in the study periods. Differences between centroid and gingival changes suggested that upper and lower arch premolars buccaly proclined during the pre-surgical period. CONCLUSIONS: Maxillary and mandibular dental arches presented transverse expansion at premolar regions during preoperative orthodontic preparation, with a tendency towards buccal tipping. The transverse dimensions were not altered after surgery. No sagittal or vertical changes were observed during the follow-up periods.

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Investigation of in vivo three‐dimensional changes of the spinal canal after corrective surgeries of the idiopathic scoliosis

JOR Spine ◽

10.1002/jsp2.1151 ◽

2021 ◽

Author(s):

Chaofan Han ◽

Yong Hai ◽

Chaochao Zhou ◽

Peng Yin ◽

Runsheng Guo ◽

...

Keyword(s):

Idiopathic Scoliosis ◽

Spinal Canal ◽

Three Dimensional ◽

Dimensional Changes

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Three-dimensional changes in root angulation of buccal versus palatal maxillary impacted canines after orthodontic traction: A retrospective before and after study

International Orthodontics ◽

10.1016/j.ortho.2021.04.003 ◽

2021 ◽

Author(s):

Yalil Augusto Rodríguez-Cárdenas ◽

Luis Ernesto Arriola-Guillén ◽

Aron Aliaga-Del Castillo ◽

Gustavo Armando Ruíz-Mora ◽

Guilherme Janson ◽

...

Keyword(s):

Three Dimensional ◽

Dimensional Changes ◽

Impacted Canines ◽

Before And After ◽

Before And After Study

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Facial Mobility after Maxilla-Mandibular Advancement in Patients with Severe Obstructive Sleep Apnea Syndrome: A Three-Dimensional Study

International Journal of Dentistry ◽

10.1155/2017/1574304 ◽

2017 ◽

Vol 2017 ◽

pp. 1-7 ◽

Cited By ~ 4

Author(s):

Laura Verzé ◽

Francesca Antonella Bianchi ◽

Niccolò Barla ◽

Serena Maria Curti ◽

Giovanni Gerbino ◽

...

Keyword(s):

Obstructive Sleep Apnea ◽

Surgical Treatment ◽

Sleep Apnea ◽

Obstructive Sleep Apnea Syndrome ◽

Sleep Apnea Syndrome ◽

Three Dimensional ◽

Severe Obstructive Sleep Apnea ◽

Facial Movements ◽

Obstructive Sleep ◽

Apnea Syndrome

Introduction. The functional results of surgery in terms of facial mobility are key elements in the treatment of patients. Little is actually known about changes in facial mobility following surgical treatment with maxillomandibular advancement (MMA). Objectives. The three-dimensional (3D) methods study of basic facial movements in typical OSAS patients treated with MMA was the topic of the present research. Materials and Methods. Ten patients affected by severe obstructive sleep apnea syndrome (OSAS) were engaged for the study. Their facial surface data was acquired using a 3D laser scanner one week before (T1) and 12 months after (T2) orthognathic surgery. The facial movements were frowning, grimace, smiling, and lip purse. They were described in terms of surface and landmark displacements (mm). The mean landmark displacement was calculated for right and left sides of the face, at T1 and at T2. Results. One year after surgery, facial movements were similar to presurgical registrations. No modifications of symmetry were present. Conclusions. Despite the skeletal maxilla-mandible expansion, orthognathic surgical treatment (MMA) of OSAS patients does not seem to modify facial mobility. Only an enhancement of amplitude in smiling and knitting brows was observed. These results could have reliable medical and surgical applications.

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The Use of Eye Tracking to Discern the Threshold at Which Metopic Orbitofrontal Deformity Attracts Attention

The Cleft Palate-Craniofacial Journal ◽

10.1177/1055665620926014 ◽

2020 ◽

Vol 57 (12) ◽

pp. 1392-1401

Author(s):

Mark P. Pressler ◽

Emily L. Geisler ◽

Rami R. Hallac ◽

James R. Seaward ◽

Alex A. Kane

Keyword(s):

Surgical Treatment ◽

Graduate Students ◽

Eye Tracking ◽

Dwell Time ◽

Surgical Intervention ◽

Three Dimensional ◽

Average Dwell Time ◽

Eye Tracker ◽

Gaze Patterns ◽

Areas Of Interest

Introduction and Objectives: Surgical treatment for trigonocephaly aims to eliminate a stigmatizing deformity, yet the severity that captures unwanted attention is unknown. Surgeons intervene at different points of severity, eliciting controversy. This study used eye tracking to investigate when deformity is perceived. Material and Methods: Three-dimensional photogrammetric images of a normal child and a child with trigonocephaly were mathematically deformed, in 10% increments, to create a spectrum of 11 images. These images were shown to participants using an eye tracker. Participants’ gaze patterns were analyzed, and participants were asked if each image looked “normal” or “abnormal.” Results: Sixty-six graduate students were recruited. Average dwell time toward pathologic areas of interest (AOIs) increased proportionally, from 0.77 ± 0.33 seconds at 0% deformity to 1.08 ± 0.75 seconds at 100% deformity ( P < .0001). A majority of participants did not agree an image looked “abnormal” until 90% deformity from any angle. Conclusion: Eye tracking can be used as a proxy for attention threshold toward orbitofrontal deformity. The amount of attention toward orbitofrontal AOIs increased proportionally with severity. Participants did not generally agree there was “abnormality” until deformity was severe. This study supports the assertion that surgical intervention may be best reserved for more severe deformity.

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