30 research outputs found
Study of the features of masticatory efficiency in patients with acute cerebrovascular disorder by hemitype
The attention of dental researchers is constantly focused on assessing the quality of treatment for various pathologies of the dentΠΎalveolar system, determining disorders of occlusal correlations, treatment, and prevention of diseases of the temporomandibular joint and periodontal tissue pathology. Numerous studies on the above aspects contain information on the characteristics of masticatory efficiency as one of the most vivid markers of orthopedic treatment, as it allows dentists to determine the quality of actual masticatory performance.The issues of functional diagnostics at the stages of rehabilitation of patients with partial defects of the dentition remain relevant, and therefore, the indicators of masticatory efficiency in prosthetics with removable dentures will be one of the most important criteria for adaptation to them. The situation exacerbates when such patients suffer from somatic pathologies of a neurological nature, in particular, acute cerebrovascular disorder.The aim of the research was to study the features of masticatory function in patients with a complicated course of acute cerebrovascular disorder with the neurological deficit by hemitypeThe study involved 25 people with a complicated course of acute cerebrovascular disorder with the neurological deficit by hemitype and 20 people from the control group, aged from 40 to 65 years, for whom partial removable laminar dentures with acrylic base and retaining bent metal clasps were manufactured according to clinical indications. All patients gave their free and informed consent to participate in the study.The masticatory efficiency was determined using the author's method based on the principle of graphical analysis of fragments of the agar-agar masticatory sample with subsequent programmed calculation and computer processing of numerical data.The evaluation indicators were as follows: the total number of fragments of the chewing sample and the number of fragments with a fraction of 500-1000 pixel2.Statistical analysis of the results was conducted using the Statistica 10.0 software package for Windows, and it embraced the following:1. Assessing the distribution of values and their correspondence to the normal one in the population.2. Comparison of the results obtained before applying a removable dental prosthesis and 30 days after its application.3. Intergroup comparison of the results.Thus, we observed an increase in the chewing sample parameters in the period from the beginning of orthopedic treatment until the 30th day of observation after applying a partial removable laminar denture. Despite the general trend, in the group of patients with ACVD, the masticatory efficiency was lower than that of the control group, which is confirmed by the difference between the total number of fragments (<17.22) and the number of fragments with a caliber of 500 to 1000 pixel2 (<4.41). In our opinion, this is due to the peculiarities of adaptation processes in patients with ACVD, who present with a much longer period than patients without a somatic pathology.The study revealed that the masticatory efficiency, restored by prosthetics with removable laminar dentures in the group of patients with a complicated course of ACVD by hemitype, one month after treatment is at the level of 88.68 (total number of fragments of the chewing sample) and 17.04 (number of fragments with a caliber of 500-1000 pixel2), which is a relatively worse indicator as compared to the control group. Thus, the total period of orthopedic rehabilitation for patients with ACVD is longer
Analysis of denture base impact on the denture foundation area tissues
The article presents the results of the study of the dental base impact on the denture foundation area tissues. The study was conducted in 149 patients aged 41 to 74 years. Removable partial laminar dentures for the upper and lower jaws were made of plastics "Ftorax" and "Etacryl-02" by three technologies: in a "water bath", in a dry polymerizer under the pressure and in an advanced injection molding machine. The results obtained allow us to recommend the technology of manufacturing removable partial laminar dentures in the advanced injection molding machine for using in dental orthopedics clinic.Π£ ΡΡΠ°ΡΡΡ Π½Π°Π²Π΅Π΄Π΅Π½ΠΎ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈ Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ Π²ΠΏΠ»ΠΈΠ²Ρ ΠΏΡΠΎΡΠ΅Π·Π½ΠΎΠ³ΠΎ Π±Π°Π·ΠΈΡΡ Π½Π° ΡΠΊΠ°Π½ΠΈΠ½ΠΈ ΠΏΡΠΎΡΠ΅Π·Π½ΠΎΠ³ΠΎ Π»ΠΎΠΆΠ°. ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½ΠΎ Π½Π° 149 Ρ
Π²ΠΎΡΠΈΡ
Π²ΡΠΊΠΎΠΌ Π²ΡΠ΄ 41 Π΄ΠΎ 74 ΡΠΎΠΊΡΠ². Π§Π°ΡΡΠΊΠΎΠ²Ρ Π·Π½ΡΠΌΠ½Ρ ΠΏΠ»Π°ΡΡΠΈΠ½ΠΊΠΎΠ²Ρ ΠΏΡΠΎΡΠ΅Π·ΠΈ Π½Π° Π²Π΅ΡΡ
Π½Ρ ΡΠ° Π½ΠΈΠΆΠ½Ρ ΡΠ΅Π»Π΅ΠΏΠΈ Π· ΠΏΠ»Π°ΡΡΠΌΠ°Ρ Β«Π€ΡΠΎΡΠ°ΠΊΡΒ» Ρ Β«ΠΡΠ°ΠΊΡΠΈΠ»-02Β» Π²ΠΈΠ³ΠΎΡΠΎΠ²Π»ΡΠ»ΠΈΡΡ ΡΡΡΠΎΠΌΠ° ΠΌΠ΅ΡΠΎΠ΄Π°ΠΌΠΈ: Π½Π° Β«Π²ΠΎΠ΄ΡΠ½ΡΠΉ Π±Π°Π½ΡΒ», Π² Π°ΠΏΠ°ΡΠ°ΡΡ Π΄Π»Ρ ΡΡΡ
ΠΎΡ ΠΏΠΎΠ»ΡΠΌΠ΅ΡΠΈΠ·Π°ΡΡΡ ΠΏΡΠ΄ ΡΠΈΡΠΊΠΎΠΌ ΡΠ° Π² ΡΠ΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½ΠΎΠΌΡ Π°ΠΏΠ°ΡΠ°ΡΡ Π΄Π»Ρ Π»ΠΈΡΡΡΠΎΠ²ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠ²Π°Π½Π½Ρ. ΠΡΡΠΈΠΌΠ°Π½Ρ ΡΠ΅Π·ΡΠ»ΡΡΠ°ΡΠΈ Π΄ΠΎΠ·Π²ΠΎΠ»ΡΡΡΡ ΡΠ΅ΠΊΠΎΠΌΠ΅Π½Π΄ΡΠ²Π°ΡΠΈ Π΄ΠΎ Π²ΠΈΠΊΠΎΡΠΈΡΡΠ°Π½Π½Ρ Π² ΠΊΠ»ΡΠ½ΡΡΡ ΠΎΡΡΠΎΠΏΠ΅Π΄ΠΈΡΠ½ΠΎΡ ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΡΡ ΠΌΠ΅ΡΠΎΠ΄ΠΈΠΊΡ Π²ΠΈΠ³ΠΎΡΠΎΠ²Π»Π΅Π½Π½Ρ ΡΠ°ΡΡΠΊΠΎΠ²ΠΈΡ
Π·Π½ΡΠΌΠ½ΠΈΡ
ΠΏΠ»Π°ΡΡΠΈΠ½ΠΊΠΎΠ²ΠΈΡ
ΠΏΡΠΎΡΠ΅Π·ΡΠ² Π² ΡΠ΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½ΠΎΠΌΡ Π°ΠΏΠ°ΡΠ°ΡΡ Π΄Π»Ρ Π»ΠΈΡΡΡΠΎΠ²ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠ²Π°Π½Π½Ρ
Determination of fractal dimension of the functional masticatory test patterns
Valid diagnostic assessment of the state of dentoalveolar system and its masticatory function, in particular, is considered to be an important scientific task of modern prosthodontics. Plenty of the developed ways are based on the use of up-to-date information technology, especially on computer analysis of graphic data. The development of the enhanced methods for the evaluation of masticatory efficiency in patients with both full and partial adentia urged the search of its clear and informative indicators. According to the authors, digital image fractal dimension index can meet these needs. Since most of the available masticatory function assessment methods involve the obtaining large ammount of fragments different in their quantity, size and shape. The photography of the multiplicity of these 'spasmodically' located objects allows the processing of the received image with the help of graphic editor and converting it into numeric data. Thus, the aim of the research was to study the fractal dimension of the masticatory test images, taking into account the peculiarities of the patients'denture defects. Computer software for digital image processing ImageJ 1.50b was used in the research, since it provides the option of computer calculation of the fractal dimension index. The comparison of the masticatory tests of 30 persons with intact teeth (control group) and 33 persons with denture defects has revealed statistically significant deviation in their fractal dimension index. The reduction of the range of conventional statistical norm (1.49-1.66) to the values fluctuating from 1.47 to 1.51. was observed. Therefore, the decrease of the mean value of the fractal dimension from 1.56 (St.Err.- 0.02) to 1.50 indicates the reduction of chopping function in the given masticatory test patterns. As a result, the suggested method will allow the use of fractal dimension index as an integral indicator of masticatory efficiency level
Π©ΠΎΠ΄ΠΎ ΠΏΠΈΡΠ°Π½Π½Ρ ΡΡΠ·Π½ΠΈΡ ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΏΠΎΠ»ΡΠΌΠ΅ΡΠΈΠ·Π°ΡΡΡ Π±Π°Π·ΠΈΡΠ½ΠΈΡ ΠΏΠ»Π°ΡΡΠΌΠ°Ρ
ΠΠ°Π²Π΅Π΄Π΅Π½Π° ΠΏΠΎΡΡΠ²Π½ΡΠ»ΡΠ½Π° Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ° ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΉΠ½ΠΎΠ³ΠΎ Ρ Π»ΠΈΠ²Π°ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠ²Π°Π½Π½Ρ. Π£ΡΠ°Ρ
ΠΎΠ²ΡΡΡΠΈ Π²ΡΡ Π½Π΅Π΄ΠΎΠ»Ρ- ΠΊΠΈ ΡΠ° ΠΏΠ΅ΡΠ΅Π²Π°Π³ΠΈ ΠΎΠ±ΠΎΡ
ΠΌΠ΅ΡΠΎΠ΄ΡΠ² ΠΏΡΠ΅ΡΡΠ²Π°Π½Π½Ρ, Π΄ΠΎΠ²Π΅Π΄Π΅Π½Ρ Π²Π°Π³ΠΎΠΌΡ ΠΏΠ΅ΡΠ΅Π²Π°Π³ΠΈ Π»ΠΈΠ²Π°ΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠ²Π°Π½Π½Ρ ΠΏΡΠΈ Π²ΠΈΠ³ΠΎΡΠΎΠ²- Π»Π΅Π½Π½Ρ Π·Π½ΡΠΌΠ½ΠΈΡ
ΠΊΠΎΠ½ΡΡΡΡΠΊΡΡΠΉ; ΠΡΠΈΠ²Π΅Π΄Π΅Π½Π° ΡΡΠ°Π²Π½ΠΈΡΠ΅Π»ΡΠ½Π°Ρ Ρ
Π°ΡΠ°ΠΊΡΠ΅ΡΠΈΡΡΠΈΠΊΠ° ΠΊΠΎΠΌΠΏΡΠ΅ΡΡΠΈΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΈ Π»ΠΈΡΡΠ΅Π²ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠΎΠ²Π°Π½ΠΈΡ. Π£ΡΠΈΡΡΠ²Π°Ρ Π²ΡΠ΅ Π½Π΅Π΄ΠΎΡΡΠ°ΡΠΊΠΈ ΠΈ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π° ΠΎΠ±ΠΎΠΈΡ
ΠΌΠ΅ΡΠΎΠ΄ΠΎΠ² ΠΏΡΠ΅ΡΡΠΎΠ²Π°Π½ΠΈΡ, Π΄ΠΎΠΊΠ°Π·Π°Π½Ρ Π²Π΅ΡΠΎΠΌΡΠ΅ ΠΏΡΠ΅ΠΈΠΌΡΡΠ΅ΡΡΠ²Π° Π»ΠΈΡΡΠ΅Π²ΠΎΠ³ΠΎ ΠΏΡΠ΅ΡΡΠΎΠ²Π°Π½ΠΈΡ ΠΏΡΠΈ ΠΈΠ·Π³ΠΎΡΠΎΠ²Π»Π΅Π½ΠΈΠΈ ΡΡΡΠΌΠ½ΡΡ
ΠΊΠΎΠ½ΡΡΡΡΠΊΡΠΈΠΉ; Π’he article describes the comparative characteristics of compressive and casting pressing. Considering disadvantages and advantages of both methods, it was proved some advantages of the usage of the casting pressing during construction of removable constructions
Excitability of pulp of mandibular premolars at the pathological abrasion
ΠΠ²ΡΠΎΡΠ°ΠΌΠΈ ΡΡΠ°ΡΡΠΈ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Ρ ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Π½ΠΈΡ ΡΠΎΡΡΠΎΡΠ½ΠΈΡ ΠΏΡΠ»ΡΠΏΡ ΡΠ΅Π·ΡΠΎΠ², ΠΊΠ»ΡΠΊΠΎΠ² ΠΈ ΠΏΡΠ΅ΠΌΠΎΠ»ΡΡΠΎΠ²
Π½ΠΈΠΆΠ½Π΅ΠΉ ΡΠ΅Π»ΡΡΡΠΈ ΠΏΡΠΈ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΠΈΡΠ°Π΅ΠΌΠΎΡΡΠΈ Π³ΠΎΡΠΈΠ·ΠΎΠ½ΡΠ°Π»ΡΠ½ΠΎΠΉ ΡΠΎΡΠΌΡ.
Π£ΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΡΠΎ ΡΠΎΡΡΠΎΡΠ½ΠΈΠ΅ ΠΏΡΠ»ΡΠΏΡ ΡΠ΅Π·ΡΠΎΠ², ΠΊΠ»ΡΠΊΠΎΠ² ΠΈ ΠΏΡΠ΅ΠΌΠΎΠ»ΡΡΠΎΠ² Π½ΠΈΠΆΠ½Π΅ΠΉ ΡΠ΅Π»ΡΡΡΠΈ ΠΏΡΠΈ ΠΈΡ
ΠΏΠ°Β
ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΡΠ΅ΡΡΠΎΡΡΠΈ Π·Π°Π²ΠΈΡΠΈΡ Π½Π΅ ΡΠΎΠ»ΡΠΊΠΎ ΠΎΡ Π³ΡΡΠΏΠΏΡ Π·ΡΠ±ΠΎΠ², Π½ΠΎ ΡΠ°ΠΊΠΆΠ΅ ΠΎΡ ΡΡΠ΅ΠΏΠ΅Π½ΠΈ ΠΏΠ°ΡΠΎΠ»ΠΎΠ³ΠΈΡΠ΅ΡΠΊΠΎΠΉ
ΡΡΠΈΡΠ°Π΅ΠΌΠΎΡΡΠΈ ΠΈ Π²ΠΎΠ·ΡΠ°ΡΡΠ° ΠΏΠ°ΡΠΈΠ΅Π½ΡΠ°.; The authors of the article studied the condition of the pulp of mandibular incisors, canines and
premolars at their pathological abrasion of horizontal form.
We conducted a comprehensive examination of patients with the intact dental arches and with the
pathological abrasion of hard tissues of mandibular incisors, canines, premolars of horizontal form
of varying severity. In addition to the control group, the patients were divided by age into three experimental
groups. The second group consisted of the patients aged 45-54 years. Group 3 was of the
patients aged 55-64 years, and the Group 4 included the patients of 65 years and older.
The study results showed that in the control group the 31th and 41th teeth reacted to the electric
currents 2.68 Β± 0.26 and 3.32 Β± 1.04 microamps, respectively. The decrease of excitability was investigated
in the experimental groups comparing to the control group.
In the second experimantal group, the figures of excitability of the 31th and 41th teeth were
12.83 Β± 1.66 and 17.94 Β± 1.11 microamps, respectively.
The third experimental group (55-64 years), consisting of patients with a pathological abrasion of
nearly two-thirds of the tooth, is also characterized by a decrease in the excitability of the central incisors,
which dissection figures are 21.56 Β± 2.46 and 24.75 Β± 0.87 mircoamps, respectively. Dissection of
teeth increased their electroexcitability on the average from 2 mircoamps to 3 mircoamps.
The abrupt decrease of the tooth excitability was investigated in patients of Group 4 (experimental)
with completely erased tooth crowns. The figures of tooth excitability were in the range from
64,31 Β± 9,84 to 82,5 Β± 6,78 mircoamps.
It was established that the condition of the pulp of mandibular incisors, canines and premolars at
their pathological abrasion depends not only on the group of teeth but also on the pathological abrasion
degree and the patient's age
ΠΠΈΠ·Π½Π°ΡΠ΅Π½Π½Ρ ΠΌΠ°ΡΠΊΠ΅ΡΡΠ² ΠΆΡΠ²Π°Π»ΡΠ½ΠΎΡ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡΡ Π΄Π»Ρ ΠΎΡΡΠ½ΠΊΠΈ ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΡΡΠ°Π½Ρ Π·ΡΠ±ΠΎ-ΡΠ΅Π»Π΅ΠΏΠ½ΠΎΡ ΡΠΈΡΡΠ΅ΠΌΠΈ
ΠΠ΅ΡΠ° Π΄ΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½Π½Ρ β Π·Π° Π΄ΠΎΠΏΠΎΠΌΠΎΠ³ΠΎΡ Π·Π°ΠΏΡΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎΠ³ΠΎ Π²Π΄ΠΎΡΠΊΠΎΠ½Π°Π»Π΅Π½ΠΎΠ³ΠΎ ΡΠΏΠΎΡΠΎΠ±Ρ ΠΏΡΠΎΠ²Π΅Π΄Π΅Π½Π½Ρ ΠΆΡΠ²Π°Π»ΡΠ½ΠΎΡ ΠΏΡΠΎΠ±ΠΈ Π²ΠΈΠ·Π½Π°ΡΠΈΡΠΈ Π½Π°ΠΉΠ±ΡΠ»ΡΡ ΠΏΠΎΠΊΠ°Π·ΠΎΠ²Ρ ΠΌΠ°ΡΠΊΠ΅ΡΠΈ Π΄Π»Ρ ΠΎΡΡΠ½ΠΊΠΈ ΡΠΊΠΎΡΡΡ ΠΆΡΠ²Π°Π»ΡΠ½ΠΎΡ Π΅ΡΠ΅ΠΊΡΠΈΠ²Π½ΠΎΡΡ
Basic principles of arch prosthetics
The development of prosthetic dentistry provides improvement of different dental prostheses to increase the level of dental care efficiency. The manual is aimed to provide comprehension of the present day views on the arch prostheses production considering theoretical and practical value of classical techniques. The manual contains the programme material on prosthetic dentistry educational discipline and concerns the issues discussed in the section Β«Arch prostheticsΒ». The current methods of arch prostheses fixation are widely covered in the manual as well as planning approaches and prosthesis design choice. Particular attention is paid to the basic technological stages of prostheses manufacturing. The text is illustrated with the color drawings improving the presented material comprehension, the list of questions is directed on self-control of acquired knowledge. The authors will be sincerely grateful to colleagues for constructive remarks and useful suggestions in improving the presented material. Authentic translation from Ukrainian Language
ΠΠΏΠ°ΡΠ°Ρ Π΄Π»Ρ Π»ΡΠΊΡΠ²Π°Π½Π½Ρ ΠΊΠΎΠ½ΡΡΠ°ΠΊΡΡΡ Π½ΠΈΠΆΠ½ΡΠΎΡ ΡΠ΅Π»Π΅ΠΏΠΈ
ΠΠ½Π΄ΠΈΠ²ΡΠ΄ΡΠ°Π»ΡΠ½ΠΈΠΉ Π°ΠΏΠ°ΡΠ°Ρ Π΄Π»Ρ Π»ΡΠΊΡΠ²Π°Π½Π½Ρ ΠΊΠΎΠ½ΡΡΠ°ΠΊΡΡΡ Π½ΠΈΠΆΠ½ΡΠΎΡ ΡΠ΅Π»Π΅ΠΏΠΈ ΠΏΡΠΎΠΏΠΎΠ½ΡΡΡΡΡΡ Π΄Π»Ρ Π²ΠΏΡΠΎΠ²Π°Π΄ΠΆΠ΅Π½Π½Ρ Π² Π»ΡΠΊΡΠ²Π°Π»ΡΠ½ΠΎ-ΠΏΡΠΎΡΡΠ»Π°ΠΊΡΠΈΡΠ½ΠΈΡ
ΡΡΡΠ°Π½ΠΎΠ²Π°Ρ
ΠΏΡΠ°ΠΊΡΠΈΡΠ½ΠΎΡ ΠΎΡ
ΠΎΡΠΎΠ½ΠΈ Π·Π΄ΠΎΡΠΎΠ²βΡ (ΠΎΠ±Π»Π°ΡΠ½ΠΈΡ
, ΠΌΡΡΡΠΊΠΈΡ
, ΡΠ°ΠΉΠΎΠ½Π½ΠΈΡ
) ΡΡΠΎΠΌΠ°ΡΠΎΠ»ΠΎΠ³ΡΡΠ½ΠΎΠ³ΠΎ ΠΏΡΠΎΡΡΠ»Ρ
Characteristics of cellular composition of periodontal pockets
Purpose.The emergence and development of inflammatory periodontal disease in
young people is an urgent problem of today's periodontology, and requires a
development of new methods that would give an opportunity not only to diagnose but
also prognosis of periodontitis course in a given patients contingent. Results. Cellular
structure periodontal pockets is presented by hematogenous and epithelial cells. Our
results are confirmed by several studies of redecessors, and show that the penetration
of periodontal pathogens leads to formation in periodontal tissue of a highly active
complex compounds - cytokines that are able to modify the activity of neutrophils and
reduce their specific antibacterial properties. Cytokines not only adversely affect the
periodontal tissues, but cause further activation of cells that synthesized them, inhibit
tissue repair and process of resynthesis of connective tissue by fibroblasts.
Conclusion. Neutrophilic granulocytes present in each of the types of smear types, but
their functional status and quantitative composition is different. The results of our
cytological study confirmed the results of immunohistochemical studies, and show that
in generalized periodontitis, an inflammatory cellular elements with disorganized
epithelial cells and connective tissue of the gums and periodontium, and bacteria form
specific types of infiltration in periodontal tissues