Surgical Treatment of Cherubism with the Use of Three-Dimensional Virtual Planning and CAD-CAM Resection Guides

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Sanna Järvinen ◽  
Juho Suojanen ◽  
Anni Suomalainen ◽  
Patricia Stoor
Keyword(s):  
Surgical Treatment ◽  
Three Dimensional ◽  
Virtual Planning ◽  
Cad Cam ◽  
Cam Resection

scholarly journals Computer-Assisted Three-Dimensional Planning for Orbital Decompression

2015 ◽  
Vol 8 (3) ◽  
pp. 211-217 ◽  
Author(s):  
Nicholas Mahoney ◽  
Michael P. Grant ◽  
SrinivasMurthy Susarla ◽  
Shannath Merbs
Keyword(s):  
Surgical Treatment ◽  
Soft Tissue ◽  
Three Dimensional ◽  
Computer Assisted ◽  
Orbital Decompression ◽  
Virtual Planning ◽  
Common Cause ◽  
Tissue Volume ◽  
The Past ◽  
Soft Tissue Volume

Thyroid-associated orbitopathy is the most common cause of unilateral or bilateral proptosis in adults. A mainstay of surgical treatment is orbital decompression utilizing osteotomies to increase the size of the affected bony orbit to accommodate the larger soft tissue volume. Over the past several decades, numerous approaches have been described for orbital decompression. However, given the intricate osseous and soft tissue anatomy within the orbit, orbital decompression is a potentially hazardous intervention. With advances in three-dimensional imaging and virtual planning, extensive orbital decompressions can be performed safely and efficiently. In this report, we describe two cases of three-wall orbital decompressions using three-dimensional planning.

scholarly journals THE USE OF CAD/CAM TECHNOLOGY IN SURGICAL TREATMENT OF CONDYLAR HEAD FRACTURE

2019 ◽  
Vol 112 (4) ◽  
pp. 23-31
Author(s):  
Tetiana Pavlychuk ◽  
Denis Chernogorskyi ◽  
Yurii Chepurnyi ◽  
Andrii Kopchak
Keyword(s):  
Surgical Treatment ◽  
Maxillofacial Surgery ◽  
Three Dimensional ◽  
Mouth Opening ◽  
Surrounding Tissue ◽  
Patient Specific ◽  
Number Of Patients ◽  
Two Component ◽  
Cad Cam ◽  
Condylar Head

Management of the condylar head fractures is still one of the most controversial issues of the maxillofacial surgery. The aim of the present study was to increase the accuracy and quality of the surgical treatment of condylar head fracture with the use of navigation surgical guide and patient specific reinforcement two-component plate and individualized fixator with the use of CAD/CAM technology. In study was included 8  patient with 10 condylar head fractured. In 5 cases was used navigation guides, in 4 cases (the biomechanical unfavorable)  was used the patient specific two-component plate and only in one case we used  individualized patient specific plate. A CT scan was done immediately after the operation. The reduction of the fragments and the location of the screws, plate and fixator were checked on the same view in the preoperative and postoperative pictures on the computer. The relation between the screw and the cortical bones was clearly shown on CT, and the sizes of the bicortical screws were suitable with no injury to the articular cartilage or surrounding tissue. The three-dimensional objects showed that the screw was in the designated position and the condyle had been replaced and fixed in the normal position. The height of the ramus on the fractured side was restored immediately postoperatively. The malocclusion was corrected and the passive mouth opening of each patient was never less than 3 cm. One  patients had transient paralysis of the temporal branch of the facial nerve postoperatively, which gradually recovered within a 2 month. Postoperative clinical examination showed good occlusion and mouth opening of at least 3 cm in all patients after 3 months without pain. All patients regained normal mandibular movements and had short and invisible scars at 6 months’ follow-up. Given the small number of patients, this issue needs further study in randomized prospective studies involving more patients and evaluating long-term postoperative outcomes

scholarly journals Virtual planning for vertical control using temporary anchorage devices

2015 ◽  
Vol 5 ◽  
pp. 162-165
Author(s):  
Mauricio Accorsi
Keyword(s):  
New Technologies ◽  
Three Dimensional ◽  
Clinical Information ◽  
Virtual Planning ◽  
Temporary Anchorage Devices ◽  
Final Treatment ◽  
Cad Cam ◽  
Dimensional Diagnosis ◽  
History Of ◽  
Therapeutic Decision Making

The new and innovative technologies are unprecedentedly improving the level of proficiency in orthodontics in the recent history of this area of expertise. The proliferation of advances, such as self-ligating systems, temporary anchorage devices, shape-memory wires, robotically wire bending, intraoral scanners, cone-beam computed tomography, bring the virtual planning, and confection of dental devices through CAD/CAM systems to the real world. In order to get efficiency and efficacy in orthodontics with these new technologies, we must understand the importance of systemically managed clinical information, medical, and dentistry history of the patients, including the images resources, which ensures the use of a communication that is assisted by the technology, with an interdisciplinary team so that the database is able to help and support the process of therapeutic decision-making. This paper presents the clinical case of a borderline patient for orthognathic surgery who had his final treatment planning supported by these new tools for three-dimensional diagnosis and virtual planning.

Guided surgery with 3D printed device: a case report

2020 ◽  
Author(s):  
Michelle Carvalho de Sales ◽  
Rafael Maluza Flores ◽  
Julianny da Silva Guimaraes ◽  
Gustavo Vargas da Silva Salomao ◽  
Tamara Kerber Tedesco ◽  
...  
Keyword(s):  
Operating Time ◽  
Three Dimensional ◽  
Conventional Technique ◽  
Cervical Region ◽  
Mean Deviation ◽  
Apical Region ◽  
Virtual Planning ◽  
Surgical Guide ◽  
Surgical Guides ◽  
High Level

Dental surgeons need in-depth knowledge of the bone tissue status and gingival morphology of atrophic maxillae. The aim of this study is to describe preoperative virtual planning of placement of five implants and to compare the plan with the actual surgical results. Three-dimensional planning of rehabilitation using software programs enables surgical guides to be specially designed for the implant site and manufactured using 3D printing. A patient with five teeth missing was selected for this study. The patient’s maxillary region was scanned with CBCT and a cast model was produced. After virtual planning using ImplantViewer, five implants were placed using a printed surgical guide. Two weeks after the surgical procedure, the patient underwent another CBCT scan of the maxilla. Statistically significant differences were detected between the virtually planned positions and the actual positions of the implants, with a mean deviation of 0.36 mm in the cervical region and 0.7 mm in the apical region. The surgical technique used enables more accurate procedures when compared to the conventional technique. Implants can be better positioned, with a high level of predictability, reducing both operating time and patient discomfort.

scholarly journals Virtual Surgical Planning, Stereolitographic Models and CAD/CAM Titanium Mesh for Three-Dimensional Reconstruction of Fibula Flap with Iliac Crest Graft and Dental Implants

2021 ◽  
Vol 10 (9) ◽  
pp. 1922
Author(s):  
Carlos Navarro Cuéllar ◽  
Manuel Tousidonis Rial ◽  
Raúl Antúnez-Conde ◽  
Santiago Ochandiano Caicoya ◽  
Ignacio Navarro Cuéllar ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Surgical Planning ◽  
Iliac Crest ◽  
Three Dimensional ◽  
Titanium Mesh ◽  
Iliac Crest Graft ◽  
Virtual Surgical Planning ◽  
Fibula Flap ◽  
Dimensional Reconstruction ◽  
Cad Cam

Mandibular reconstruction with fibula flap shows a 3D discrepancy between the fibula and the remnant mandible. Eight patients underwent three-dimensional reconstruction of the fibula flap with iliac crest graft and dental implants through virtual surgical planning (VSP), stereolitographic models (STL) and CAD/CAM titanium mesh. Vertical ridge augmentation and horizontal dimensions of the fibula, peri-implant bone resorption of the iliac crest graft, implant success rate and functional and aesthetic results were evaluated. Vertical reconstruction ranged from 13.4 mm to 10.1 mm, with an average of 12.22 mm. Iliac crest graft and titanium mesh were able to preserve the width of the fibula, which ranged from 8.9 mm to 11.7 mm, with an average of 10.1 mm. A total of 38 implants were placed in the new mandible, with an average of 4.75 ± 0.4 implants per patient and an osseointegration success rate of 94.7%. Two implants were lost during the osseointegration period (5.3%). Bone resorption was measured as peri-implant bone resorption at the mesial and distal level of each implant, with a variation between 0.5 mm and 2.4 mm, and with a mean of 1.43 mm. All patients were rehabilitated with a fixed implant prosthesis with good aesthetic and functional results.

Three-dimensional virtual planning for nodule resection in solid organs: A systematic review and meta-analysis

2021 ◽  
pp. 101598
Author(s):  
Matheus Zanon ◽  
Stephan Altmayer ◽  
Guilherme Watte ◽  
Gabriel Sartori Pacini ◽  
Tan-Lucien Mohammed ◽  
...  
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Three Dimensional ◽  
Virtual Planning

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

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
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.

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

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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