Biomaterials used in Reduction and Fixation of Unstable Fractures of the Zygomaticomaxillary Complex

Cavernous venous malformation (CVM) is the most common primary vascular lesion of the orbit. The aim of this study is to present authors �experience regarding fourteen patients with orbital CVM (so-called cavernous hemangioma) and identify their clinical and histopathological particular characteristics. From 2010 to 2017 a total of 14 patients were diagnosed with orbital cavernous hemangiomas and treated by the authors. Patients� socio-demographic, clinical, radiological, and surgical findings were retrospectively retrieved from medical records and analyzed. Diagnosis of a cavernous hemangioma was confirmed histologically in all cases. Results: All 14 patients were females, with a mean age of 44.2 years old, ranging from 13 years to 57 years. The left orbit was affected in eleven (78.57%) cases. A painless, gradually progressive proptosis and visual disturbance were the main clinical signs. In four (28.57%) cases, the lesion was incidentally discovered at imaging evaluations for persistent headache. All patients were accurately diagnosed preoperatively based on computed tomography (CT) exam or magnetic resonance imaging (MRI). The tumors were removed successfully by anterior orbitotomy. Transconjunctival approach proved to be an important surgical procedure in their treatment, with excellent results and a low risk of complications. Histologically, all lesions revealed large vascular channels with endothelium lining and multilaminar smooth muscle layers in their walls, but also nests of small capillary channels in interstitium. No intravascular thrombosis or stromal lymphocytes could be seen. Orbital cavernous hemangiomas presented clinical, imaging and histological features of a benign lesion. Having to deal with extraconal lesions, we successfully used anterior orbitotomy, mainly the transconjuctival approach, with no complications or recurrences after a six-month follow-up period. Histologically, all lesions revealed images being most closely to dysplastic veins. So, we concluded that the so-called orbital cavernous hemangioma was rather a cavernous venous malformation.

Section: Surgical Procedures and Pathological Findingsmentioning

confidence: 99%

Histopathological and Clinical Characteristics of Surgically Removed Cavernous Venous Malformations (so-called Cavernous Hemangiomas) of the Orbit

Costan¹,

Sava²,

Cărăuleanu³

et al. 2019

“…However, clinical experience can make a conclusive and meaningful assessment.In-vitro toxicity was tested at the NIOM Scandinavian Institute of Dental Material, Haslum (N), made by direct contact with cells. The test was conducted in accordance with ISO 10993-5: Biological evaluation of medical devices Part 5: Tests for vitro cytopoxicity [16][17][18].…”

Section: Cyclotoxicitymentioning

confidence: 99%

Aesthetic Rehabilitation of the Teeth using Single Fixed Prostheses

Caraiane¹,

Toma²,

Raftu³

et al. 2019

Dental aesthetics has always been an integral part of practical dentistry despite the fact that only in the last decade it has benefited from an objective critical analysis. Initially, aesthetics is regarded as an art - synonym for subjective, romantic and sentimental sensations. At a time when the basic aesthetic principles were based on Greek and Roman mathematics, the painters studied the aesthetics in order to create the painting, reflected in the depths of our soul. One can have an everlasting discussion about the two facets of dental-scientific and subjective aesthetics. It can be difficult to differentiate dental aesthetics from distinct units because all components are closely interrelated and interdependent. Complete and complex oro-dental treatments should be performed in such a way as to give back the patient both the masticatory functional skills, the feeling of comfort and the aesthetically lost aspect. The general trend in dental medicine focuses on replacing materials that, while meetingfunctional requirements, are not aesthetically pleasing. Thus, new generations of composite materials or integral ceramics take precedence over metal alloys used in dental treatments, from amalgam alloys to metal prosthetic restorations, including even gold ones. The database includes selection, examination and prosthetic resolution of 38 cases in the University of Galati University Prosthetic Clinic in the period 2016-2018. The possibility of creating unidirectional prostheses is a plus in the realization of true to nature works. Prosthetic variants, like dental faces, through which changes in shape, colour and even slight position can be made, with minimal invasiveness, or even non-invasive in the case of no-prep facets are a real advantage to aesthetics. From a biological point of view, the IPS e.max Press ceramic whole system is superior in that it is chemically inert, has a dental-like hardness, therefore it does not produce abrasion, the lack of metal avoids gingival changes colour, galvanic phenomena, and also a possibility of treatment for allergic persons in different components of the metal structure; the biocompatibility of these materials is clearly superior.

“…It causes an increase in the concentration of hydrogen ions (H-hyperionia), increase of osmotic pressure (hypertonia), increase of oncotic pressure hypercholesterolemia), increase in temperature (hyperthermia) [31][32][33].…”

Section: Developing Physical Chemistry and Biological Chemistry In Thmentioning

confidence: 99%

Inflamatory Chemistry and Organic Surgery in the Maxilar Compression

Craiu¹,

Budacu²,

Dănilă³

et al. 2019

The morphology and physiology of odonto-periodontal units, muscles, temporomandibular joints, maxillary bones, ligaments are in a constant balance, even if all these components are subject to continuous transformation. Affecting a systemic element will attract imbalances to other levels, and the therapeutic solution will require knowledge and understanding of the ensemble. A complete dental exam must allow identification of all factors responsible or likely to cause imbalance in the stomatognat system. The maxillary compression is an abnormality characterized by a transversal developmental deficiency in the upper jaw and / or the mandibular, showing morpho-functional changes that denote a complex disruption in the development of the dento-maxillary apparatus. The common modification of all the fractured cases is the insufficient development in a transversal sense, dental arcades (mono - or bimaxilar), along with facial and maxillary bone changes, disturbances of inter - maxillary or occlusion blocking, functional deficits and disturbances. The strictly mandibular compression situation is very rare and addresses cases by affecting growth at the condylian level. The study includes 27 cases with jaw compression and benefited from orthognat surgery in the Maxillofacial Surgery Clinic between 2015 - 2018. If untreated, the abnormality determines the appearance of many cavities especially in the front teeth, difficulty in performing dental hygiene will lead to chronic marginal periodontitis, the occurrence of abnormal contact between teeth with joint pain, decreased chewing field. The jaw compression is revealed by multiple facial and oral signs, as well as by functional changes. Orthognatic surgery is the only effective treatment for many patients in jaw compression.