This report presents results theoretical and experimental investigation of a new twpe of the electro-discharge laser which has as a basis the strong rotated supersound flows.It has been shown that heat transfer inside supersound vortex flow can be related to convection-diffusion type and electrical power coupling in discharge can reach the level of 300 W/crn .It is more than two order higher than in ordinary gas discharge. The relations of similarity and scaling laws for vortex electro-clischarged laser has been proposed. This laser and plasmatrons can be used for various biological, agricultural and forestial processing. By using this laser we can detect morfological and pathological skin's changing.

Objectives - to improve the quality of surgical treatment of patients with chronic dacryocystitis. Material and methods. Six people participated in the study. All the examined and operated patients were diagnosed with chronic dacryocystitis. The patients' examination included the consultation of an ophthalmologists, an otolaryngologist, and an internist, a CT scan of nose, paranasal sinuses, nasolacrimal canal, a video endoscopic study of the nasal cavity. Each patient had indications for surgery. An endonasal dacryocystorhinostomy was performed under the control of video endoscopic technique using the N.V. Volov's Elevator. The surgical approach - via the inferior nasal meatus, under the inferior nasal concha. The surgical method - breaking out of the bone window is performed by turning the elevator medially from the side of the lachrymal sac into the nasal cavity. Results. There were no intraoperative complications. The operation time was less than five minutes. The treatment was carried out on an outpatient basis. During the follow-up period (2-6 months) no relapses were registered. These facts can be regarded as the advantages of this method of surgical treatment of dacryocystitis. Conclusion. The method of endonasal dacryocystorhinostomy, performed through the inferior nasal meatus using an elevator, significantly reduces the time of formation of the bone window and the imposition of the anastomosis between the lachrymal sac and the nasal cavity. The process of intraoperative search for the projection of the nasolacrimal canal simplifies. It also reduces the wound surface and shortens the rehabilitation period.

Aim to develop a new method of endonasal augmentation of the alveolar process of the upper jaw to reduce postoperative risks. Material and methods. The study involved 10 patients during the period of December, 2019, and June, 2021. The examination methods were: computed tomography of the nose and paranasal sinuses, upper and lower jaw, and video-endoscopy of the nasal cavity. The patients received the indonasal sinus inlay with the use of allogenic bone chips. Results. The surgical access through the lower nasal passage, under the lower nasal concha, allows to expose the maxillary sinus floor with preservation of mucous membrane integrity and to fill in the space between them with the allogenic bone material. Formation of a bone window in the lateral nasal wall using a piezotome prevents the rupture of the sinus mucous membrane. A bony fragment of the lateral nasal cavity wall transferred into the cavity of the maxillary sinus as one block with the mucosa creates additional protection for the Schneiderian membrane. Allogenic material introduced by endonasal method is substituted by the own organotypic tissue, restoring the lost volume of the maxillary sinus alveolar process. Conclusion. The endonasal method of alveolar augmentation may be used in clinical practice as an alternative to the classic methods.

Relevance: A key aspect of success after dental implant surgery is obtaining reliable osseointegration of the installed dental implant. In modern literary sources, the problem of consistency of osseointegration after the installation of dental implants is quite often touched upon. A number of authors argue that the quality of osseointegration of a dental implant depends primarily on its primary stability. Long-term studies show that bone tissue permanently undergoes various resorption and recovery processes [1, 2]. Purpose to determine the effectiveness of alkaline phosphatase and collagen protein osteocalcin in oral fluid after dental implantation. Materials and methods: Clinical studies were carried out on the basis of the Clinics of the Samara State Medical University of the Ministry of Health of Russia. A total of 240 patients with a diagnosis of partial absence of teeth were operated on. All patients received dental implants. The median age was 44.2 years (24 to 62 years; 182 women and 58 men). Results and discussion: At the stage of orthopedic rehabilitation, most patients had a low index of oral hygiene, OHI-S averaged (2.63 0.27) c.u. All patients suffering from poor oral hygiene were recommended professional hygiene with the removal of soft and hard dental deposits. At the stage of dental implantation, the OHI-S and Mulleman index was (0.66 0.03) and (0.49 0.03) c.u. respectively. Conclusions: The results of the study showed that the increase in the titer of alkaline phosphatase and the collagen protein osteocalcin was statistically insignificant. The level of acid phosphatase titer in the oral fluid reaches its critical value two weeks after the dental implantation operation. Studies have shown that this indicator remains active up to six months after surgery. This indicator can be used to interpret various emerging trophic processes occurring in bone tissue after dental implantation.