scholarly journals THE APPLICATION OF CONSTRUCTIONS MADE FROM BIODEGRADABLE MATERIAL WITH BIOACTIVE ACTION IN RECONSTRUCTIVE SURGERY OF MAXILLOFACIAL AREA

2019 ◽  
Vol 85 (4) ◽  
pp. 88-95
Author(s):  
О.О. Astapenko ◽  
Т.M. Kostiuk ◽  
N.М. Lytovchenko ◽  
T.V. Tyazhkorob
Keyword(s):  
Maxillofacial Surgery ◽  
Metal Structure ◽  
Additional Stress ◽  
Biodegradable Material ◽  
Facial Skull ◽  
Bone Fragments ◽  
Costs Of Treatment ◽  
Number Of Publications ◽  
Polyurethane Composition ◽  
Positive Properties

Currently, titanium plates and screws are widely used to fix bone fragments in maxillofacial surgery. The need for a second operation to remove the metal structure increases the patient's incapacity for work, the economic costs of treatment and the psychoemotional load on the patient associated with anxiety and additional stress. All this has led to the emergence of an alternative method of osteosynthesis using biodegradable plates and screws, which do not have these disadvantages. With all the positive properties of titanium fixators in recent years there has been a large number of publications on the increase in complications after metal osteosynthesis (MOS) using titanium bone plates and screws, which is from 5 to 18 %, therefore, there is a need to remove them after consolidation of bone fragments. The results of the study were the basis for finding ways to obtain the material without metal defect, from which it would be possible to make fixator in the form of plates and screws for the osteosynthesis in maxillofacial region. It was developed biodegradable material of bioactive action (EPU-GAP-LEV) based on polyurethane composition which contains 20 % hydroxyapatite, and 6 % levamisole for osteosynthesis fixator. It was proved effectiveness of EPU-GAP-LEV fixators for osteosynthesis in the treatment of the patients with fractures and deformations of facial skull. Positive results of own clinical researches in early and long terms testified to efficiency and perspective of use of polymeric (including EPU-GAP-LEV) miniplasts in surgical treatment of fractures of facial skull with shift.

scholarly journals GEOMETRICAL MODELS OF MANDIBLE FRACTURE AND PLATE IMPLANT

2018 ◽  
Vol 16 (3) ◽  
pp. 369 ◽  
Author(s):  
Karim Husain ◽  
Mohammed Rashid ◽  
Nikola Vitković ◽  
Jelena Mitić ◽  
Jelena Milovanović ◽  
...  
Keyword(s):  
Maxillofacial Surgery ◽  
Fracture Site ◽  
Oral And Maxillofacial Surgery ◽  
Mandibular Fractures ◽  
Anatomical Features ◽  
Mandible Fracture ◽  
Human Bones ◽  
Fixation Techniques ◽  
Bone Fragments ◽  
The Creation

In the oral and maxillofacial surgery, there is a requirement to provide the best possible treatment for the patient with mandibular fractures. This treatment presumes application of reduction and fixation techniques for proper stabilization of the fracture site. The reduction of the bone fragments and their fixation is much better performed when geometry and morphology of the bone and osteofixation elements (e.g. plates) are properly defined. In this paper, a new healthcare procedure, which enables application of personalized plate implants for the fixation of the mandibular fractures, is presented. Geometrical models of mandible and plate implants, presented in this research, were created by means of the Method of Anatomical Features (MAF), which has been already applied to the creation of accurate geometrical models of various human bones, plates and fixators. By using such geometrically and anatomically accurate models, orthopedic and maxillofacial surgeons can better perform pre-operative tasks of simulating and planning the operation, as well as an intraoperative task of implanting the personalized plate into the patient body.

scholarly journals Surgical treatment of mandibular fracture resulting from first molar extraction: case report

2021 ◽  
Vol 10 (13) ◽  
pp. e161101320915
Author(s):  
Monique Gonçalves da Costa ◽  
Anderson Maikon de Souza Santos ◽  
Mirela Caroline Silva ◽  
Tiburtino José de Lima Neto ◽  
Eduardo Dallazen ◽  
...  
Keyword(s):  
Severe Pain ◽  
Preoperative Evaluation ◽  
Maxillofacial Surgery ◽  
Mandibular Fracture ◽  
Basic Principles ◽  
Pain Complaint ◽  
Oral Environment ◽  
Mandibular Body ◽  
Bone Fragments ◽  
Molar Extraction

Extraction is one of the most common procedures performed by dental surgeons in their daily clinical practice. Among the trans and postoperative complications associated with this procedure can be mentioned the occurrence of trismus, infections, edema, alveolitis, paresthesia or fractures. The purpose of this study was to report a clinical case of a mandibular fracture associated with first molar extraction, approaching its main risk factors and treatment. Patient JSS, 24 years old, female, was referred to the service of Maxillofacial Surgery due to complications resulted from the extraction of element 36. On physical examination, was observed the presence of fragment mobility, communication of bone tissue with the oral environment and pain complaint was reported by the patient. Computed tomography showed the presence of a fracture in the region of the mandibular body on the left side. The planned surgical proposal was the intraoral debridement of bone fragments, extraoral access in the base of the mandible, fixation of the fracture with plate 2.4 and intraoral and extraoral access suture. During the surgical procedure, it is of great importance that the dental surgeon be aware to the signals emitted by the patient, such as clicks associated with severe pain, profuse bleeding or crackling as these symptoms may be the result of mandibular fracture. When any of these signs are found during the operation, the professional must investigate the occurrence of a possible fracture. It is concluded that in addition to performing a good preoperative evaluation, the dental surgeon must carry out a correct planning of the surgical act based on the basic principles of the surgical technique.

scholarly journals Colles external fixator as alternative in comminuted mandibular fractures treatment

2020 ◽  
Vol 9 (10) ◽  
pp. e1879108030
Author(s):  
Luiz Henrique Soares Torres ◽  
Caio Pimenteira Uchoa ◽  
Mateus Barros Cavalcante ◽  
Virgílio Bernardino Ferraz Jardim ◽  
Éwerton Daniel Rocha Rodrigues ◽  
...  
Keyword(s):  
External Fixation ◽  
Maxillofacial Surgery ◽  
Mouth Opening ◽  
Mandibular Fractures ◽  
Anatomical Reduction ◽  
Mandibular Body ◽  
Bone Fragments ◽  
Mandibular Region ◽  
Zone Ii

Objective: to report a surgical case of comminuted mandible fracture caused by a firearm projectile treated with external fixation. Methodology: male patient, 18 years old, attended the Emergency Department of the Maxillofacial Surgery service after trauma in the mandibular region by a firearm projectile. On clinical examination, edema was observed in the cervical zone II and mandibular region, penetrating orifice of entry of the projectile in the genial region and mobility in the mandibular body. CT scan revealed a comminuted fracture in the mandible. Transcutaneous perforations were performed with pins, anatomical reduction of the fracture and stabilization to the external nail, adapting to the mandibular anatomy. Following postoperative follow-up, the patient progresses without pain complaints, with functional and satisfactory mouth opening, without mobility in bone fragments, and reestablished mandibular framework. Results and Conclusion: mandibular fractures by firearms are frequent in the routine of the buccomaxillofacial surgeon. Cases of bone comminution present individual peculiarities that must be taken into account in their management. The correct indication of external fixation proved to be adequate and satisfactory for cases of mandible comminution.

scholarly journals Disinfectants Used in Stomatology and SARS-CoV-2 Infection

2021 ◽  
Author(s):  
Magdalena Stawarz-Janeczek ◽  
Agata Kryczyk-Poprawa ◽  
Bożena Muszyńska ◽  
Włodzimierz Opoka ◽  
Jolanta Pytko-Polończyk
Keyword(s):  
Maxillofacial Surgery ◽  
Membrane Integrity ◽  
Mechanisms Of Action ◽  
Sodium Chlorite ◽  
Dental Practice ◽  
Fungal Cell ◽  
Cell Membrane Integrity ◽  
Cell Components ◽  
Activity Loss ◽  
Number Of Publications

AbstractEffective disinfection is a basic procedure in medical facilities, including those conducting dental surgeries, where treatments for tissue discontinuity are also performed, as it is an important element of infection prevention. Disinfectants used in dentistry and dental and maxillofacial surgery include both inorganic (hydrogen peroxide, sodium chlorite-hypochlorite) and organic compounds (ethanol, isopropanol, peracetic acid, chlorhexidine, eugenol). Various mechanisms of action of disinfectants have been reported, which include destruction of the structure of bacterial and fungal cell membranes; damage of nucleic acids; denaturation of proteins, which in turn causes inhibition of enzyme activity; loss of cell membrane integrity; and decomposition of cell components. This article discusses the most important examples of substances used as disinfectants in dentistry and presents the mechanisms of their action with particular focus on severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The search was conducted in ScienceDirect, PubMed, and Scopus databases. The interest of scientists in the use of disinfectants in dental practice is constantly growing, which results in the increasing number of publications on disinfection, sterilization, and asepsis. Many disinfectants often possess several of the abovementioned mechanisms of action. In addition, disinfectant preparations used in dental practice either contain one compound or are frequently a mixture of active compounds, which increases their range and effectiveness of antimicrobial action. Currently available information on disinfectants that can be used to prevent SARS-CoV-2 infection in dental practices was summarized.

Use of autologous fibrin-platelet glue and bone fragments in maxillofacial surgery

2004 ◽  
Vol 30 (2) ◽  
pp. 139-144 ◽  
Author(s):  
Gabriella Giannini ◽  
Valbonesi Mauro ◽  
Tel Agostino ◽  
Bindi Gianfranco
Keyword(s):  
Maxillofacial Surgery ◽  
Bone Fragments

scholarly journals Craniometric characteristic of the visceral skull in adulthood

2018 ◽  
pp. 5-12
Author(s):  
O. M. Sazonova ◽  
O. Yu. Vovk ◽  
Yu. M. Vovk ◽  
D. O. Hordiichuk ◽  
S. O. Dubina
Keyword(s):  
Maxillofacial Surgery ◽  
Surgical Interventions ◽  
Arithmetic Average ◽  
National Medical ◽  
The People ◽  
Age Related ◽  
Facial Skull ◽  
Wide Range ◽  
Bone Structures ◽  
Medical University

In relation with the development of clinical endovasive surgery, neurosurgery, maxillofacial surgery there is an urgent need for their improvement. Recent year’s osteological and orthopedic areas of medicine have been rapidly developed; it requires an additional data on the age-related and individual anatomical variability. The purpose of the study – is to establish the range of anatomical variability of facial skull in adulthood taking in account the extreme forms, sizes and relations according to skull shapes. The research was conducted on a study of 100 bone samples of coherent and fragmented skulls from the collections of anatomy department of Kharkiv National Medical University. It was investigated 58 male skulls and 42 female skulls in 25-60 years old age. To establish an individual anatomical variability of the bone structures, was determined a number of main indices using the well-known craniodivider. All calculations performed by computer program "SPSS Statistics 17.0" using the digital standard package of the tables and initial data. It is proved that the highest range of the arithmetic average of zygomatic sizes (zy-zy) related with representatives of brachycephalic type of the skull, in adulthoods with mesocephalic type it decreases, the minimal range has been found in dolichocephalic type of the head and skull. The lower zygomatic diameter - the size between points go-go, also decreases in the arithmetic average from brachycephalic to dolichocephalic types that is associated with the gradual narrowing and lengthening of the visceral skull in adulthood. More stable results were found determining the forehead width (ft-ft). This parameter tends to decrease from brachycephalic to dolichocephalic. More advanced type of facial structure is defined in brachycephalic adulthoods, the narrowed forehead shape related with dolichocephalic type. For modern craniological estimation of the visceral skull, the size n-pr used to calculate special indices. According to our data, in brachycephalic males this parameter varies from 5.0 to 6.9 cm; females - between 4.8-6.6 cm. In representatives of mesocephalic type, the n-pr ranges in 10.0-11.6 cm. In people with dolichocephalic type, this altitude parameter increased in males from 5.7 to 7.9 cm, females - from 5.5 to 7.6 cm. It was also established that Ind1 has a wide range of variability, especially in brachycephalic males – 83.50 ± 9.70 and in females – 87.00 ±7.80, which includes a variety of visceral skull structure in people of different age. The range of this index in mesocephalic people is less – 86.00 ± 3.20 (males) and 85.30 ± 3.40 (females). Accordingly, in dolichocephalic type complete visceral index is observed in range – 91.20 ± 4.40 (males) and 91.10 ± 2.90 (females). Thus, it is proved that the specific type of visceral skull – europrosopic is specific for the people of Kharkiv region. It is characterized by increased latitudinal sizes: zy-zy, po-po and go-go, with a slight decrease in altitude parameters of the visceral skull n-gn and n-pr. Depending on the range of variability of individual parameters of the visceral skull - it will be possible to suggest the most effective and rational ways of surgical interventions and accesses.

scholarly journals METHODS FOR FIXATION OF BONE FRAGMENTS IN LOWER JAW FRACTURES

2021 ◽  
Vol 17 (3) ◽  
pp. 7-12
Author(s):  
Guzel Gilmanova ◽  
Sahil Soltanov ◽  
Said Ksembaev ◽  
Oleg Ivanov
Keyword(s):  
Muscle Tension ◽  
Maxillofacial Surgery ◽  
Mandibular Fractures ◽  
Lower Jaw ◽  
Metal Plates ◽  
Surgical Methods ◽  
Jaw Fractures ◽  
Bone Fragments ◽  
Methods Of Treatment ◽  
Delayed Consolidation

Thing. A review of the literature devoted to the topical problem of maxillofacial surgery and surgical dentistry – methods of treating patients with mandibular fractures was carried out. The aim of the study is to review the materials of publications on the methods of treatment of patients with mandibular fractures. Methodology. The publications of domestic and foreign authors, considering methods of fixation of bone fragments in lower jaw fractures, have been studied. Results. Publications indicate that there are many treatments for mandibular fractures. Research results demonstrate the importance of bone stabilization for bone fusion. A common disadvantage of conservative and surgical methods of treatment is unstable fixation of bone fragments, which is the most common cause of delayed consolidation of a mandibular fracture. The presented studies show that bone osteosynthesis with metal plates is considered the most appropriate method for treating mandibular fractures. Conclusions. Splinting as a method of treating fractures of the lower jaw has a large number of disadvantages. A common disadvantage of methods for splinting the lower jaw is that these structures do not always provide anatomical reduction and stability for the entire period of consolidation or require mandatory intermaxillary fixation, the lower jaw is fixed in the central occlusion position, which is not a position of physiological rest, and leads to passive muscle tension. depriving them of active function. The main disadvantage of the methods of osteosynthesis using a suture and using wires is that it is difficult to achieve stable fixation of fragments using these techniques. Combined methods of fixation of bone fragments (use of a bone suture and dental splints) provide a stronger fixation of the fragments. In the past two decades, in the treatment of mandibular fractures, there has been an increase in the trend towards rigid or semi-rigid osteosynthesis using plates. The disadvantages of compression osteosynthesis is that significant compression can lead to ischemia and slow down the formation of callus. A common disadvantage of conservative and surgical methods of treatment is unstable fixation of bone fragments, which is the most common reason for their delayed consolidation. Bone osteosynthesis with metal plates is considered a more progressive method of treating mandibular fractures.

scholarly journals MANDIBULAR RECONSTRUCTION WITH FREE NON-VASCULARIZED RIB AUTOGRAFT

2020 ◽  
Vol 46 (3) ◽  
pp. 31
Author(s):  
N. G. Barannik ◽  
O. O. Mosieyko ◽  
O. M. Manukhina ◽  
A. V. Sidoryako
Keyword(s):  
Maxillofacial Surgery ◽  
Postgraduate Education ◽  
State Institution ◽  
Bone Defects ◽  
Non Profit ◽  
Mandibular Joint ◽  
Working Age ◽  
Long Time ◽  
Bone Fragments ◽  
Vascularized Rib

Purpose of the study. To increase the effectiveness of rehabilitation of patients with acquired bone defects of the mandible with the help of rib free non-vascularized autografts. Materials and methods. In the maxillofacial department of Municipal non-profit enterprise «City Clinical Hospital for Emergency and Medical Care, Zaporizhyzhya» Council 41 patients were treated, who underwent surgical treatment to replace the acquired bone defects of the mandible with rib free autografts on the basis of the clinic of maxillofacial surgery of the State Institution SE «Zaporizhzhya Medical Academy of Postgraduate Education of the Ministry of Health of Ukraine» 2015–2019. Most patients were of working age: from 21 to 60 years. In general, the age composition of patients was almost identical, which allowed us to assume that all studies were conducted under the same conditions and in a standard sample. Depending on etiology, surgery – replacement of mandibular defects, performed simultaneously or across a long time period. Results. Improved technique of mandibular bone grafting by free rib autograft due to the expansion of the technical possibility to reliably fix bone fragments with titanium plates and screws, as well as tight installation of the autograft in the bone defect and create, consequently, favorable conditions for a pseudo-temporal-mandibular joint formation. The own technique of preparation and formation of a costal autograft is offered. For 15 years, no complications were detected and no rejection of freely transplanted costal autografts was observed. Conclusions. The use of reliable fixation of bone fragments ensures the formation of callus and prevents autograft rejection. The proposed method of preparation of a costal autograft with a fragment of cartilage, allows to achieve reliably forming a pseudo-temporal-mandibular joint. Keywords: bone plastic, defect of the mandible, non-vascularized rib autograft, regenerative processes.

scholarly journals Clinical and functional rationale for the use of intraosseous composite materials-covered screw retainers for mandibular fracture osteosynthesis

2014 ◽  
Vol 95 (2) ◽  
pp. 219-223
Author(s):  
S A Safarov ◽  
A E Shcherbovskih ◽  
Yu V Petrov ◽  
I M Bayrikov
Keyword(s):  
Composite Materials ◽  
Main Part ◽  
Plate Osteosynthesis ◽  
Maxillofacial Surgery ◽  
Mandibular Fracture ◽  
Oral And Maxillofacial Surgery ◽  
Mandibular Fractures ◽  
Rigid Fixation ◽  
Bone Fragments ◽  
Fracture Osteosynthesis

Aim. To increase the effectiveness of mandibular fracture osteosynthesis by using the composite materials-covered intraosseous screw retainers with active combined cutting edge. Methods. 282 patients with mandibular fractures were examined and operated in the clinic of Oral and Maxillofacial Surgery and Dentistry of Samara State Medical University from 2011 to 2013. Surgeries were performed in 257 (91.1%) patients, including plate osteosynthesis - in 133 (47.2%), intraosseous composite materials-coated screw retainers - in 42 (14.9%), uncoated pins - in 65 (23.0%), bone sutures - in 17 (6.0%). Orthopedic and other methods of bone fragments fixation were used in 25 (8.9%) patients. Proposed composite materials-coated osteosynthesis retainer is a square pin with cutting angle of 60-80° and 4 longitudinal grooves of 5-10 mm. The main part is a two-tier helical ribbon with alternating cutting portions, wherein some areas have the same diameter as the main part of the retainer, and the others are 20-100 microns thinner and are covered with TiC0, 65+25% Ca10(PO4)OH2. RESULTS. A comparative analysis with the traditionally used methods was carried out. The main advantages of the proposed method are rigid fixation of mandibular bone fragments and optimal osteogenesis in complex treatment of patients with trauma. Conclusion. The use of the proposed method of mandibular fractures surgical treatment using intraosseous screw retainers with bioactive coating reduced the risk of complications and the length of hospital stay.

Percutaneous embolization of renal arteriovenous fistula

VASA ◽  
2005 ◽  
Vol 34 (3) ◽  
pp. 207-210 ◽  
Author(s):  
Sendi ◽  
Toia ◽  
Nussbaumer
Keyword(s):  
Heart Failure ◽  
Arteriovenous Fistula ◽  
Clinical Symptoms ◽  
Rare Complication ◽  
Abdominal Discomfort ◽  
Renal Arteriovenous Fistula ◽  
Percutaneous Embolization ◽  
Arterial Access ◽  
Number Of Publications ◽  
Occluding Balloon

Acquired renal arteriovenous fistula is a rare complication following a nephrectomy and its diagnosis may be made many years after the intervention. The closure of the fistula is advisable in most cases, since it represents a risk for heart failure and rupture of the vessel. There are an increasing number of publications describing different techniques of occlusion. The case of a 70-year-old woman with abdominal discomfort due to a large renal arteriovenous fistula, 45 years after nephrectomy, is presented and current literature is reviewed. Percutaneous embolization was performed by placing an occluding balloon through the draining vein followed by the release of nine coils through arterial access. One day after successful occlusion of the fistula, clinical symptoms disappeared.

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