The success of implantation treatment largely depends on osseointegration – a stable connection of bone tissue cells with the implant surface. One of the key technical factors on which successful osseointegration depends is the biocompatible surface of the implant.Materials and methods. The authors investigated three series of coatings on prototypes (samples) of titanium implants for biological compatibility: titanium dioxide (TiO2) films obtained by plasma activated atomic layer deposition (PEALD); titanium dioxide (TiO2) films obtained by sol-gel method; diamond-like carbon (DLC) films. Primary cultures of MSCs – mesenchymal stromal cells of rat adipose tissue were used to study proliferative activity.Results. A total of 30 samples were examined, samples made of titanium grade VT6 without coating served as a control. Samples, TiO2 ALD 25 nm, DLC 100 nm and DLC 200 nm, on which cellular elements showed significantly high levels of proliferative activity showed high biological compatibility.

The high frequency of connective tissue dysplasia (CTD) in the pediatric population, its negative impact on the course of diseases of the dentoalveolar system predetermine the need to make additions to the standards of diagnosis and treatment of this category of patients. Depending on the severity of external phenotypic manifestations and laboratory, clinical and instrumental signs, among 114 adolescents 12–16 years old with general pathology, as well as the clinical symptom complex of CTD, groups with mild, moderate and severe undifferentiated dysplasia were formed. The control group consisted of 37 adolescents of the I and II health groups, matched by sex and age. The first stage of CTD diagnostics involves the identification and scoring of external dysplastic signs, the second stage of diagnostics includes an indepth clinical and instrumental examination to identify visceral CTD manifestations. It was found that the prevalence of dentoalveolar anomalies and deformities in combination with signs of undifferentiated connective tissue dysplasia in adolescence exceeds the frequency of detecting dentoalveolar anomalies and deformities in children of the control group by 1.4–10.9 times. It has been proven that the most informative phenotypic signs in patients with CTD and occlusive disorders are stigmas from the maxillofacial region (anomalies in the position of the teeth, high (Gothic) palate, deformation of the Spee occlusal curve, narrowing and deformation of the dentition, anomalies of attachment of the frenum of the tongue and lips ), bone-skeletal (hypermobility of joints, flat feet, clinodactyly, osteochondrosis, poor posture, anomalies of the skull, deformities of the limbs and chest), ectodermal (hyper-extensibility of the skin, thin, easily injured skin) and muscle (hypotonia of muscles). The presence of at least six informative dysplastic signs in dental patients is an objective criterion for an unclassified CTD phenotype.

Epulis is a benign neoplasm that is quite common in the practice of a dentist. It is a soft tissue formation on the peduncle that connects it to the gum. Sources of growth of epulis are most often the periodontium of the tooth, therefore, the neoplasm is very rarely found on the edentulous jaw or in the area of implants. Treatment of epulis is to eliminate the etiological factor, and excision of the formation together with the periosteum. In our practice, we first encountered an epulis that appeared in the area of previously installed implants. The excised mass was sent for pathological and histological examination, according to the results of which the conclusion was given: angiomatous epulis with a giant cell area with an expression.

No abstract

X-ray method in modern realities is the main method for assessing the state of bone tissue. Cone beam computed tomography has proven itself in dental practice as a reliable method for assessing the bone tissue of the dentoalveolar system. In implant dentistry, an important factor in obtaining a good result is a qualitative assessment of the structure and morphology of the bone tissue of the upper and lower jaws. Unfortunately, when measuring the optical density of the areas of interest, it is not always possible to obtain correct data on the state of the bone tissue, moreover, implant dentists often have to visually assess the quality of bone density for treatment in their practice, but we understand that this is subjective. This work is aimed at determining the error in calculating the optical density of bone tissue using Dicom viewer programs.