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Biomedical subjects

A B Davydov

Publications and source records attributed to A B Davydov.

At least 19 recordsLinked to original sources
PubMed2004

[Social and organizational problems and approaches to optimization of diagnosis of the buccal mucosa carcinomas].

The incidence of malignant tumors of the buccal mucosa and stages of carcinoma were analyzed in 565 primary patients for a period of 10 years. The study showed social and organization problems in the disease diagnosis: refusal of patients from medical consultation, unjustified omitting of examination of the oral cavity aimed at cancer detection during preventive examinations of the population and treatment of odontogenic diseases, erroneous interpretation of pathological changes in the buccal mucosa, unjustified long observation and treatment by non-oncological specialists, incompetence of physicians, etc. Approaches to optimization of diagnosis are outlined: improvement of the efficiency of preventive examinations by non-oncological specialists, specialized upgrading of dentists and increase of their professional responsibility, and early use of morphological methods of examination of pathological processes in the buccal mucosa.

Carcinoma↗
PubMed2004

[Reconstructive operations in the treatment of carcinoma of the lower lip].

The authors sum up the results of combined and reconstructive surgical treatment of 213 cases with squamous-cell carcinoma of the lower lip, carried out in Tver Oncological Center during the recent decade. Oncological and functional esthetic results of different methods of primary cheiloplasty are analyzed. The findings confirm that clinoid resection of the lip is not permissible as a method of treatment and that indications for resection of the lower lip without primary cheiloplasty should be limited. The authors suggest their own method for surgical repair of the lower lip, which was used in the treatment of 23 patients with carcinomas. Evaluation of the adequacy and efficiency of the method and analysis of the incidence and type of postoperative complications, function of the lower lip after its repair, and esthetic results showed high esthetic and functional efficiency of the new method, due to lesser trauma of the soft tissues, lesser blood loss, and shorter time required for elevation of triangular mucous flaps, adequate blood supply to triangular mucous grafts and lower risk of their aseptic necrosis, anatomic topographic division of vertical fragments of skin and mucous wounds of the lip, and lower risk of secondary wound infection.

Adult↗
PubMed1993

[The validation of the use of iodine-containing suture thread in surgical practice].

Tissue response to the implanted iodine-containing thread and its antibacterial activity were studied in the experiment. When compared with the existing analogues, the thread studied, causes the lesser inflammatory response, has pronounced antimicrobial action and has no negative effect on the course of a wound process. Universality of antiseptic action of iodine creates wide possibilities for use of the threads in the surgical practice.

Animals↗
PubMed1992

Biomechanical substantiation of design features and physicomechanical characteristics of pins made of biocompatible polymers for intraosseous osteosynthesis.

This paper suggests a biomechanical model for osteosynthesis of tubular bones with the use of pins made of biocompatible polymers for the substantiation of the basic physicomechanical requirements to jointing elements (pins) with regard to functional loads, design features of pins and physicochemical properties of the materials used. It is shown that the known polymers including the biocompatible ones, do not individually possess the necessary strength characteristics for the production of jointing elements for highly loaded tubular bones. The properties of pins, made of biocompatible polymers, can be increased by optimizing their shapes and modifying the materials.

Adolescent↗
PubMed1990

[Combined osteosynthesis using biocompatible polymer fixators in the treatment of tubular bone fractures].

In the paper, apart from the results of clinical application of biocompatible polymeric fixatives, are presented the detailed characteristics of physical and mechanical properties of polymeric rods, indicated prospects for development of the following generations of biocompatible polymeric fixatives, exhibiting not only high strength but therapeutic activity as well due to incorporation of different medicinal substances as components of the polymeric base composition. The authors present detailed description of the combined osteosynthesis methods on a basis of use of biocompatible polymeric fixatives according to the fracture localization, period of time elapsed since the moment of trauma etc., analyze the remote results of the treatment.

Biocompatible Materials↗
PubMed1987

[Connective elements for internal organs made of biocompatible polymers].

The paper provides technical characteristics of ESB biocompatible polymer connective elements (of polymethacrylate butyl) for internal organs. Problems of the changes of their physico-mechanical properties during experiments in model environments were discussed. Also results of medical and experimental studies of connective elements on animals, and of their biodestruction, were analyzed. Findings which could be used in clinical use of the connective elements in operating parenchymatous organs and in stomatology and traumatology are shown. On the basis of results obtained after 128 operations it was found that use of ESB connective elements ensures high reliability of haemostasis, and prevents unsealing, both physical and biological, of internal sutures and rules out any adhesion. Moreover it diminishes, in some cases even rules out, the possibility of post-operative complications.

Animals↗
PubMedDate not supplied

Chemical and physicomechanical aspects of biocompatible orthopaedic polymer (BOP) in bone surgery.

The properties of biocompatible orthopaedic polymer developed as an alternative to the metallic materials used in reconstructive bone surgery are discussed. Experiments were conducted to enhance the mechanical characteristics of the polymer by incorporation of various fibres. The result was a super biocompatible orthopaedic polymer which could be a valuable alternative to intra-medullary long bone metallic rods, whilst normal biocompatible orthopaedic polymer is currently used for bone filling and reconstructive surgery.

Biocompatible Materials↗