Appearance Of Mobility Research Articles

Тимчасові незнімні ортопедичні конструкції виготовлені із використанням CAD/CAM системи методом фрезерування, як альтернатива постійним на тривалий термін

Relevance. Prevalence of partial loss of teeth in the population of Ukraine is from 62.3% to 84.5%. The war in Ukraine significantly affected the provision of timely and high-quality dental care. However, the restoration of the destroyed crown part of the tooth and the integrity of the tooth rows must take place in a timely manner, as it leads to the development of secondary deformations of the dental and jaw system. One of the options for solving the problem of timely orthopedic treatment, in these conditions, can be the use of temporary fixed orthopedic structures made using the CAD/CAM system by the milling method. The aim is to investigate the possibility of using non-removable temporary orthopedic structures made using the CAD/ CAM system by the milling method and cements for their temporary fixation for a period exceeding that established by the general protocols of orthopedic treatment and declared by the manufacturer. Materials and methods. The study was conducted in the period from September 2022 to April 2024 at the Department of Orthopedic Stomatology of the National Medical University named after O.O. Bogomolets For the study, 60 patients aged 25-59 years were selected, with the destruction of the crown part of the tooth, which required replacement with a fixed orthopedic structure and included dentition defects of various lengths. All supporting elements were divided into groups, depending on the cement used for fixation: Group I – Freegenol (GC, Japan), Group II – Provicol (Voco, Germany), Group III – RelyX Temp NE (3M ESPE, Germany), IV group – Temp-Bond NE (KERR, USA). Re-examinations of patients were carried out in periods from two weeks to six months. Results. Depending on the selected cement for temporary fixation of a non-removable orthopedic structure, the percentage of decementing of temporary single crowns, in terms of two weeks to six months, was from 2.22% to 32.65%, structures with support on two elements from 5.55% to 52.94% and based on three elements from 7.14% to 77.78%. A direct relationship was established between the appearance of mobility of the temporary fixed orthopedic structure, the sensitivity of the vital tooth and bleeding gums in all groups of subjects. Conclusions. Temporary non-removable orthopedic structures made using the CAD/CAM system by the milling method, depending on the selected cement for temporary fixation, can be used to restore the crown part of the tooth and included defects of the dentition for a period that exceeds that established by the general protocols of orthopedic treatment and declared by the manufacturer. Key words: temporary non-removable orthopedic structures, CAD/CAM systems, milling, cements for temporary fixation.

Chemical composition, organoleptic, physicochemical, and antibacterial properties of three plants of the lamiaceae family on Escherichia Coli strains

This study aimed to identify biological control methods for contaminated poultry products and the antibiotic resistance associated with the antibiotics used in poultry farming, which are responsible for toxin infections and therapeutic failures in public health. The antibacterial activity of essential oils of Thymus vulgaris, Ocimum basilicum, and Mentha pulegium was tested on 78 strains of Escherichia coli isolated from turkey meat marketed at the point of sale. The essential oils were obtained by hydro-distillation, and their organoleptic quality and physicochemical characteristics were assessed following the standard. Their liquid and mobile appearance characterizes essential oils. The three essential oils studied presented different values for the four physicochemical properties. The antibacterial effect of those essential oils was done on Escherichia coli strains using the direct contact technique on agar. The essential oils showed remarkable antibacterial activities with an inhibition diameter ranging from 10.60 to 21.4 mm compared to the positive control (gentamicin) which is used as a preventive, or curative agent in poultry farming. Moreover, MIC and CMB values are equal, with a CMB/CMI ratio equal to 1, making these essential oils bactericidal. These results lead us to conclude that aromatic and medicinal plant EOs can provide a valid alternative to antibiotic and preservative agents in the fight against toxin infections of foodstuffs of animal origin.

Features of the state of occlusion with partial loss of teeth (literature review)

This article provides an overview of literature sources devoted to the peculiarities of the state of occlusion in partial loss of teeth and modern methods of studying occlusive relationships. The clinical picture of partial tooth loss is quite diverse, while changes in occlusive relationships may occur due to the development of deformities of the dentition, the formation of traumatic occlusion, changes in the function of a group of teeth in the presence or absence of antagonists. An increase in the functional load on the preserved teeth entails a structural restructuring of occlusion, which at the initial stages of compensation manifests itself in the form of localized increased erasability of teeth with an increase in the area of occlusal contacts, enamel cracks, and then, as the reserve capabilities of the periodontal decrease, leads to the appearance of mobility and a change in the position of teeth.

Новые возможности хирургического лечения паралитического косоглазия у детей

Purpose. To assess the clinical effectiveness of the developed surgical method for treating paralytic strabismus. Material and methods. The operation was performed on 32 patients with paralytic strabismus (32 eyes) aged 3 to 12 years. All patients had diplopia in the primary gaze position or in a small abduction. Convergent strabismus was diagnosed in 26 children (81%), divergent strabismus – in 6 patients (19%), in 34% of cases (11 people) strabismus was with a vertical component. Strabismus angle according to Hirshberg before surgery: horizontal deviation from 10 to 30°, vertical – from 5 to 15°. Results. On the 7–10th day after the operation, orthotropy and the appearance of mobility of the eyeball towards the affected muscle were achieved in all operated patients. In the long term (6–12 months) after surgery, 23 children (72%) fully recovered the mobility of the eyeball in 8 directions and formed stable binocular vision, and orthotropy remained. In 9 patients (28%), there was a limitation of the mobility of the eyeball to 5–7°. Conclusion. The proposed method for the surgical treatment of paralytic strabismus makes it possible to achieve in one stage the correction of the deviation angle and the improvement of mobility with the elimination of diplopia, avoids the appearance of postoperative vertical deviation and eliminates large deviation angles. Using the proposed method, it is possible to simultaneously correct both horizontal and vertical deviations. Key words: paralytic strabismus, deviation angle, horizontal deviation, vertical deviation.

Mobile Tourism Guide in the Context of Thai National Parks: The Effects of Mobile Design Qualities in TAM2

This study aims to predict the level of international tourists' intention to use MTG in the context of Thai national parks, and investigates the roles of mobile design qualities (content quality, appearance quality, and interaction quality) through perceived usefulness and perceived ease-of-use on intention. The mixed-method via exploratory sequential design is conducted this study. The qualitative approach is started in the first stage then quantitative approach is employed to analyze the large sample size. This study extends the TAM2 with mobile design qualities. The results shows the high level of international tourist' intention to use MTG. It indicates that the international tourists will intent to the mobile tourism guide (MTG), if the MTG is provided for them. The direct factors of tourists' intention are perceived usefulness, perceived ease-of-use, mobile content quality and mobile appearance quality. The most direct effect is mobile content quality. The qualities of content and appearance have the positive roles on perceived usefulness, while the qualities of appearance and interaction have the indirect effects through perceived ease-of-use on tourists' intention. The proposed model provides the body of knowledge in the context of MTG, especially the factors of international tourists' intention to use MTG.

Structure and temperature behavior of thermotropic liquid-crystalline Ultrax copolyesters

Phase and relaxational transitions in the commercial thermotropic liquid-crystalline copolyesters Ultrax 4002 and Ultrax 4003 were studied by X-ray diffraction, differential scanning calorimetry, and mechanical analysis. In spite of only a slight difference in the compositions of the copolyesters, considerable differences in their structure and temperature behavior were observed. In particular, it was shown that the degree of crystallinity differs by more than a factor of 2 for the as-spun fibers upon annealing above the glass-transition temperature. The type of crystalline structure as well as the ability to crystallize are also different. The glass-transition temperature of both copolyesters is determined as the temperature of the appearance of mobility of the most rigid comonomer units and does not depend on the composition of the materials. Annealed copolyesters are semicrystalline materials with a two-phase structure, where the crystalline phase coexists with a liquid-crystalline one. The structure of the latter is characterized by aperiodic positions of smecticlike layers in space. On heating the materials the crystalline phase is transformed into a pseudohexagonal mesophase indicating features of a second-order phase transition.

Protein turnover in skeletal muscle of suckling rats

To determine the normal changes in protein turnover of skeletal muscle in vivo during the suckling period of rats, protein synthesis was measured in soleus, plantaris, anterior tibialis, and extensor digitorum longus (EDL) muscles of 1- to 28-day-old rats using a flooding dose of L-[4-3H]phenylalanine. Protein mass of hind-limb muscles increased nearly 100-fold, and RNA increased approximately 20-fold between 1 and 28 days of age. The total amount of protein synthesized per day increased 34-fold. Fractional protein synthesis rates (Ks) decreased two- to threefold between 1 and 28 days postpartum as a result of a decrease in protein synthetic capacity (RNA/protein). Protein synthetic efficiency (total protein synthesized/RNA) increased during this period. Ks were similar among the four muscles at 1-10 days. At 16 days, Ks increased in soleus and plantaris as a result of increases in protein synthetic efficiency; Ks did not increase in anterior tibialis and EDL. These data suggest that, during the suckling period, protein synthetic capacity in skeletal muscles of rats declines, while protein synthetic efficiency increases. The increase in translational efficiency occurred earlier in weight-bearing muscles (soleus, plantaris) than in non-weight-bearing muscles (anterior tibialis and EDL) and was associated with the appearance of mobility.