Development of the Algorithm for 3D Cephalometric Analysis of Planning Surgical Interventions for Congenital and Acquired Defects and Deformities of the Facial Skeleton

2020 ◽  
Vol 24 (5) ◽  
pp. 4778-4790
Author(s):  
Artem M. Gusarov
2013 ◽  
Vol 7 (1) ◽  
pp. 55-61 ◽  
Author(s):  
Teresa Sierpinska ◽  
Joanna Kuc ◽  
Maria Golebiewska

Advanced tooth wear often results in lost vertical dimension and impacts facial aesthetics. Complex restorative treatment can replace the lost tooth structure and improve functional occlusal and facial skeleton parameters. Purpose: The aim of the study is to assess changes in the morphological and functional occlusal parameters of the facial skeleton after prosthetic rehabilitation that increased lost occlusal vertical dimension. Material and Methodology: 50 patients with advanced tooth wear were clinically examined, to assess the degree of wear. Each subject underwent cephalometric analysis, digital occlusal analysis, and electromyographic analysis, of the anterior temporalis, superficial masetter, anterior digastric, and the sternocleidomastoid muscles. Prosthodontic treatment was performed to restore the occlusal vertical dimension of each subject’s occlusion, which was followed by repeating the pretreatment analyses. Pre and post treatment parameters were statistically compared. Results: Pre-treatment cephalometric analysis showed that lost vertical dimension reduced anterior facial height and resulted in small angular skeletal parameters. Post treatment anterior facial height increased from the increased occlusal vertical dimension. The mean value of functional electrical activity during clenching post treatment, increased compared to pretreatment. Conclusion: Increasing the vertical dimension of occlusion improved facial aesthetics by positively affecting facial skeletal angles. The restored occlusal surface morphology changed the pre treatment flat broad occlusal contacts into more point contacts. The increased vertical dimension of occlusion after treatment also increased muscle activity levels over the pretreatment levels after three months period of adaptation.


2019 ◽  
Vol 30 (3) ◽  
pp. 1488-1497 ◽  
Author(s):  
Alexander Juerchott ◽  
Christian Freudlsperger ◽  
Dorothea Weber ◽  
Johann M. E. Jende ◽  
Muhammad Abdullah Saleem ◽  
...  

2010 ◽  
Vol 11 (1) ◽  
pp. 2-12 ◽  
Author(s):  
Giampietro Farronato ◽  
Umberto Garagiola ◽  
Aldo Dominici ◽  
Giulia Periti ◽  
Sandro de Nardi ◽  
...  

2019 ◽  
Vol 1 (2) ◽  
pp. 29-39
Author(s):  
Sergey Tereshchuk ◽  
Sergey Ivanov ◽  
Daniil Korabelnikov ◽  
Vladimir Sukharev

Introduction. Modern technologies make it possible not only to plan reconstructive surgery virtually, but also to manufacture templates for resection and osteotomy, customized titanium plates based on the results of planning. Objective. To analyze the results of application of additive technologies for planning and performing reconstructive operations in the Maxillofacial Surgery and Stomatology Center at Burdenko Main Military Clinical Hospital Patients and Methods. 144 operations to eliminate different locations bone defects were performed in the Maxillofacial Surgery and Stomatology Center in 2007 - 2017. 136 patients (93%) had de-fects of the bones of the facial skeleton and the skull calvarium. In other cases, there were defects of the clavicle (2 patients), defects of the femur (2 patients), defects of the humerus (2 patients), a defect of the radius (1 patient), a defect of the navicular bone (1 patient). Results. Flaps were used to close the defects in 87% of cases (125 patients), and alloplastic implants were utilized in 13% of cases (19 patients). Additive technologies were used in 85% (n = 123) cases for planning the operation to eliminate defects, as well as for manufacturing surgical models and templates. Clinical cases are considered as examples of the use of the additive technologies for planning and performing reconstructive operations to close bone defects of different locations. The incidence of postoperative complications in the group of patients with facial skeleton and crani-al vault bones defects who underwent surgical interventions using templates was 26%, including minor complications - 17.5%, large - 8.5%. Among minor complications, hematomas (5%) and sup-puration (5%) of the recipient wound prevailed, less often similar complications were hematomas (4%) and suppuration (3%) of the donor wound. Large complications were represented by cases of complete (4%) or partial (5%) transplant necrosis. During surgical interventions without a template, it took significantly longer than the average time of grafting and graft formation (212 ± 18.7 min) than during operations with a template, including with a guide for drilling (136 ± 12.6 min, p <0.001) and without a guide for drilling (160 ± 16.3 min, p <0.001). Conclusion. The use of surgical models and templates during reconstructive operations shortens the time of the operation and reduces the number of postoperative complications.


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Alexander Juerchott ◽  
Muhammad Abdullah Saleem ◽  
Tim Hilgenfeld ◽  
Christian Freudlsperger ◽  
Sebastian Zingler ◽  
...  

2021 ◽  
Vol 27 (2) ◽  
pp. 163-168
Author(s):  
S.B. Bogdanov ◽  
◽  
G.A. Zabunyan ◽  
D.N. Marchenko ◽  
A.N. Blazhenko ◽  
...  

Introduction Surgical treatment of patients with tissue defects of the scalp and face is challenging for surgeons. It is an integral part of the social and labor rehabilitation of such patients. Exposure of the skull bones after extensive polyetiological resections creates a difficult task for reconstruction of complete or partial loss of soft tissues of the head. Autologous dermoplasty, simple in its technical implementation, is impractical on the bones of the facial and cerebral skull because insufficient vascularization of the wound bed creates a risk of early rejection of the graft. The aim of the study was development and evaluation of the effectiveness of the method of restoring the integrity of the skin of the head and face inh extensive defects with exposure of the bones of the skull. Materials and methods Аnalysis of the methods and results of reconstructive surgical treatment of three patients with extensive defects in the tissues of the scalp and face at the Research Institute of the Ochapovsky Regional Clinic Hospital No.1 in 2018-2020. Results The immediate result of surgical treatment was a complete restoration of the skin with the maximum possible preservation of underlying deep anatomical structures after a radical one-step removal of non-viable tissues, both soft and bony. Subjectively, the patients were satisfied. The aesthetic result obtained in all cases satisfied both the patients and the surgical team. Conclusion The treatment of extensive defects of the soft tissues of the face and bones of the skull is a doable task, provided certain conditions are met. Removal of the affected tissues with simultaneous plasty of the resulting wound defect with a autologous greater omentum and skin autografts allows one to simultaneously solve the problem of plastic closure of wound defects of such localization. When performing osteonecrectomy of the outer cortical plate of the skull to the bleeding layer, conditions are created for survival of a free skin autograft on the bone.


2021 ◽  
Author(s):  
Gerhard Polzar ◽  
Frank Hornung

The new benchmarks to determine the human skull precisely in 3D for the investigation of anatomic symmetry and asymmetry to verify the sagittal midline plane reference.


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