Estimation of non-linear dynamic processes and oscillating circuit of microcirculation bed in periodontal tissues by laser doppler flowmetry

2015 ◽  
Vol 9 (2) ◽  
pp. 0-0
Author(s):  
Коровкин ◽  
V. Korovkin ◽  
Ипполитов ◽  
Yuriy Ippolitov ◽  
Коровкина ◽  
...  
Keyword(s):  
Laser Doppler Flowmetry ◽  
Chaotic Behavior ◽  
Laser Doppler ◽  
Control Group ◽  
Oscillatory Process ◽  
Blood Flow Oscillations ◽  
Doppler Flowmetry ◽  
Periodontal Tissues ◽  
Linear Dynamic ◽  
Non Linear

The article discusses the assessment of the level of interconnection of non-linear dynamic and oscillatory processes in the microvasculature of periodontal tissues by laser Doppler flowmetry. For this purpose an examination of 62 patients aged 18-36 years was carried out. The control group consisted of 20 healthy indi-viduals without co-morbidities with intact periodontium. The 1st group was 20 patients with chronic catarrhal gingivitis mild; the 2nd group – 22 patients with chronic generalized periodontitis mild. The laser Doppler flow-metry with spectral continuous wavelet analysis of the blood flow oscillations was carried out by the apparatus LACC-02 (SPE "LAZMA", Russia). In the course of the study the authors evaluated the relative vibration ener-gy of E0 flow using spectral analysis of the records of the LDF (program 2.2.509 - SPE "LAZMA", Russia) and normalized nonlinear dynamic parameters of microcirculation of periodontal tissues. This allows to reveal their relationship to the parameters of the oscillatory process, to conduct its analysis, to understand the state of the macroscopic behaviour of the modulating factors, both in normal and in pathological conditions. As result of this study, it was found that the changes of the normalized nonlinear parameters microvasculature of periodontal tissues during the inflammatory process (I and II study group) were characterized by a decrease of the chaotic behavior of the system of microcirculation and its order on the basis of the numerical parameters of randomness (*, D2 N).

scholarly journals MONITORING OF THE MICROCIRCULATION OF THE MUCOUS MEMBRANE CONDITION IN THE TRANSITORY FOLD OF TEETH WITH CHRONIC APICAL PERIODONTITIS IN THE DYNAMICS OF COMPLEX ENDODONTIC TREATMENT

2019 ◽  
Vol 15 (3) ◽  
pp. 75-81 ◽  
Author(s):  
Алина Юсупова ◽  
Alina Yusupova ◽  
Лариса Герасимова ◽  
Larisa Gerasimova ◽  
Ирина Усманова ◽  
...  
Keyword(s):  
Mucous Membrane ◽  
Laser Doppler Flowmetry ◽  
Root Canal ◽  
High Efficiency ◽  
Apical Periodontitis ◽  
Endodontic Treatment ◽  
Laser Doppler ◽  
Control Group ◽  
Doppler Flowmetry ◽  
Periodontal Tissues

Subject. A sufficiently sensitive, high-resolution method of laser doppler flowmetry is used to characterize the сlaudication in the oral mucous membrane and periodontal tissues. This method makes it possible to detect early changes in the microcirculatory bloodstream and predict the course of chronic apical periodontitis. With the help of the method of laser doppler fluorometry, a comparative monitoring of the microcirculatory bloodstream of the mucous membrane of the transitory fold in the area of intact teeth and teeth with chronic apical periodontal was carried out. The aim of this study was efficiency determination of complex endodontic treatment of chronic apical periodontitis on the basis of monitoring the state of microcirculation of the mucous membrane in the transitory fold of the studied teeth. Methodology. Control group consisted of 55 patients with chronic apical periodontitis, and 20 patients with intact teeth aged 20 to 30 years old who underwent the analysis of microcirculation of the mucous membrane of the transitional fold of the studied teeth using laser doppler flowmetry (LDF). Results. The indicators IM, Kv, Q among 20 patients with intact teeth examined with the method of laser doppler flowmetry (LDF) were taken as normal. Studied parameters are significantly lower than normal in 55 patients with chronic apical periodontitis. In case of patients with chronic apical periodontitis, the inclusion of complex composed of the root canal system treatment by diode laser and the insertion into the root canal trombocytic autoplasma and its injection in projection of the root end in the protocol of endodontic treatment of chronic apical periodontitis helps to normalize microcirculation in the mucosa of the transitory folds of the investigated teeth. Summary. The study of the dynamics of the complex of endodontic treatment of chronic apical periodontitis showed its high efficiency (p≤0.001).

The response of skin perfusion and of rheological and immunological variables to intravenous prostanoid administration in Raynaud’s phenomenon secondary to collagenosis

VASA ◽  
2005 ◽  
Vol 34 (4) ◽  
pp. 243-249 ◽  
Author(s):  
Drinda ◽  
Neumann ◽  
Pöhlmann ◽  
Vogelsang ◽  
Stein ◽  
...  
Keyword(s):  
Laser Doppler Flowmetry ◽  
Raynaud’S Phenomenon ◽  
Raynaud's Phenomenon ◽  
Plasma Viscosity ◽  
Laser Doppler ◽  
Erythrocyte Aggregation ◽  
Control Group ◽  
Long Term Effects ◽  
Doppler Flowmetry

Background: Prostanoids are used in the treatment of Raynaud’s phenomenon and acral perfusion disorders secondary to collagenosis. In subjective terms, intravenous administration of these agents produces success in more than 50% of patients. The therapeutic outcome of clinical administration of alprostadil or iloprost may vary from individual to individual. Patients and methods: The following variables were analysed in a cross-over study in 27 patients with collagenosis and Raynaud’s phenomenon: plasma viscosity and erythrocyte aggregation (rheological variables), partial pressure of oxygen and laser Doppler flowmetry in the finger region, and lymphocyte phenotyping and interleukin (IL) determinations (immunological variables). Results: Laser Doppler flowmetry revealed significant differences between patients with secondary Raynaud’s phenomenon and a control group of 25 healthy subjects. Laser Doppler readings did not change significantly as a result of the treatments. Therapy with iloprost produced a reduction in IL-1beta, L-selectin (CD 62 L) and IL-6. Conclusion: The change in immunological variables due to iloprost may explain the long-term effects of prostaglandins in the treatment of Raynaud’s phenomenon. From our results it is not possible to infer any preference for iloprost or alprostadil.

scholarly journals Efficacy of Laser Doppler Flowmetry, as a Diagnostic Tool in Assessing Pulp Vitality of Traumatised Teeth. A Split Mouth Clinical Study

2021 ◽  
Vol 11 (8) ◽  
pp. 801
Author(s):  
Ani Belcheva ◽  
Maria Shindova ◽  
Reem Hanna
Keyword(s):  
Laser Doppler Flowmetry ◽  
Test Group ◽  
Laser Doppler ◽  
Permanent Teeth ◽  
Control Group ◽  
Eligibility Criteria ◽  
Doppler Flowmetry ◽  
Registration Number ◽  
Pulp Vitality ◽  
And Control

Aim: This study aimed to evaluate the efficacy of laser Doppler flowmetry (LDF) in determining the changes in the pulpal blood flow (PBF) during post-traumatic period of the traumatised permanent teeth. Methods: 88 teeth of 44 patients (mean age 10.30 ± 2.38) were recruited according to the eligibility criteria and divided into two groups: test group (44 traumatised teeth) and control group (44 sound and healthy teeth). The measurement of PBF was performed, using a LDF monitor. Results: The analysis of the LDF outcomes in function of diagnosis indicated that the measurements of the traumatised teeth were significantly higher than those of non-traumatised teeth (p ˂ 0.05). Conclusions: LDF application provides dentists with fundamental benefits in terms of an early and precise investigation of PBF. In addition, LDF is a useful monitoring tool for revascularization of traumatised teeth and reliable objective diagnostic indicator of pulp vitality. Trial registration: ClinicalTrials.gov (Registration number: NCT04967456).

scholarly journals Diagnostic capabilities of different methods of laser doppler flowmetry spectral indexes assessment in patients with diabetic microangiopathy

2021 ◽  
Vol 10 (2) ◽  
pp. 18-24
Author(s):  
P. V. Vasilev ◽  
N. P. Erofeev ◽  
A. N. Shishkin
Keyword(s):  
Diabetes Mellitus ◽  
Laser Doppler Flowmetry ◽  
Main Group ◽  
Laser Doppler ◽  
Diabetic Microangiopathy ◽  
Control Group ◽  
Spectral Parameters ◽  
Doppler Flowmetry ◽  
Diagnostic Capabilities ◽  
And Control

The article contains the results of a study of two different methods for calculating the spectral parameters of laser Doppler flowmetry in patients with diabetic microangiopathy caused by type 2 diabetes mellitus (main group) and those with excluded diabetes mellitus (control group). Spectral indices were calculated using either average or maximum amplitudes of the frequency ranges. When comparing the contribution of respiratory and pulse fluxmotions using average amplitudes, there were significant (p < 0.05) differences between the main and control groups. On the contrary, when using the maximum amplitudes, no significant differences were noted (p > 0.05). Also, significant correlations were found between the contributions of respiratory and pulse fluxmotions and the estimated glomerular filtration rate in the main group, using both calculation methods. These studies indicate the feasibility of using a technique based on the analysis of average amplitudes to increase the specificity of laser Doppler flowmetry as a method for diagnosing diabetic microangiopathy.

scholarly journals APPLICATION OF M-CHIP IN THE SURGICAL TREATMENT OF PERIODONTAL POCKETS

2020 ◽  
Vol 76 (4) ◽  
pp. 73-76
Author(s):  
E.N. Yarygina ◽  
◽  
A.E. Kriventsev ◽  
L.V. Vardanyan ◽  
R.R. Vezirov ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Laser Doppler Flowmetry ◽  
Periodontal Diseases ◽  
Diagnostic Methods ◽  
Laser Doppler ◽  
Dental Practice ◽  
Basic Principles ◽  
Doppler Flowmetry ◽  
Periodontal Tissues

In dental practice, patients with periodontal diseases are quite common. Therefore, to improve the effectiveness of treatment tactics, this article discusses the basic principles of surgical treatment of periodontal pockets using the M-Chip nanomatrix. Laser Doppler flowmetry and index assessment of periodontal tissues were used as diagnostic methods for checking the results.

The assessment of the behavior of nonlinear dynamic system of the microvascular channel of periodontal tissues in the phase space at diagnosis by laser doppler flowmetry

2015 ◽  
Vol 9 (2) ◽  
pp. 0-0
Author(s):  
Ипполитов ◽  
Yu. Ippolitov ◽  
Коровкин ◽  
V. Korovkin ◽  
Коровкина ◽  
...  
Keyword(s):  
Phase Space ◽  
Dynamic System ◽  
Laser Doppler Flowmetry ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic System ◽  
Laser Doppler ◽  
Phase Portraits ◽  
Doppler Flowmetry ◽  
Periodontal Tissues ◽  
Mild Degree

The article presents the assessment the behavior of a nonlinear dynamic system of a micro-vascular channel of periodontal tissues in phase space by laser Doppler flowmetry. For this purpose, 62 patients aged 18-36 years were examined. The control group consisted of 20 healthy individuals without co-morbidities with intact periodontium. The 1st group was 20 patients with chronic catarrhal gingivitis of mild degree; the 2nd group consisted of 22 patients with chronic generalized periodontitis of mild degree. Assessment of the state of a non-linear dynamic system of periodontal tissues was performed by laser Doppler flowmetry, the device LACC-02 (SPE &#34;LAZMA&#34;, Russia) and program 2.2.50 (SPE &#34;LAZMA&#34;, Russia). Depending on the functional state of the microcirculation in periodontal tissues, phase portraits, reflecting the dynamic state of the nonlinear system were built. The analysis of phase portraits LDF – grams revealed the dysfunctional types characterizing an inflamma-tory process. It can be used in clinical practice as a method of functional monitoring and forecasting in patients after treatment.

scholarly journals Assessment of microcirculation of intact periodontal tissues in children using laser doppler flowmetry

2020 ◽  
Vol 18 (1) ◽  
pp. 70-73
Author(s):  
O. M. Davidian ◽  
G. K. Davreshyan ◽  
F. R. Kodzhakova ◽  
M. S. Terekhov ◽  
A. A. Khudoynazarov ◽  
...  
Keyword(s):  
Oral Cavity ◽  
Laser Doppler Flowmetry ◽  
Laser Doppler ◽  
Functional Diagnostics ◽  
Doppler Flowmetry ◽  
Periodontal Tissues ◽  
Pathological Conditions

In dentistry, the method of laser flowmetry (LDF) is used to assess the microcirculatory changes of the oral cavity in normal and pathological conditions. This method is simple and atraumatic, which allows us to quickly and reliably carry out functional diagnostics. LDF is also widely used in related disciplines. The purpose of this review is to assess the microcirculation of intact periodontal tissues in children.

scholarly journals Evaluation of Shoulder Microcirculation Abnormality Using Laser Doppler Flowmetry

Diagnostics ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 143
Author(s):  
Taipau Chia ◽  
Jian-Guo Bau ◽  
Guo-Dung Hung ◽  
Sz-Huan Tsai ◽  
Che-Ming Hu
Keyword(s):  
Shoulder Pain ◽  
Laser Doppler Flowmetry ◽  
Early Stage ◽  
Functional Limitations ◽  
Laser Doppler ◽  
Control Group ◽  
Pain Level ◽  
Normal Range ◽  
Myofascial Trigger Points ◽  
Doppler Flowmetry

Severe neck-shoulder pain induces functional limitations in both life and work. The purpose of this study was to determine the characteristics of shoulder microcirculation abnormality in workers. This study recruited 32 workers and patients, both n = 16. Questionnaires were administered, and Laser Doppler Flowmetry (LDF) was used to measure microcirculatory blood flow (MBF) at the myofascial trigger points (MTrPs) on the shoulders. The absolute-deviationMMBF represented the mean MBF (MMBF) variability among subjects. The differences in the life characteristics, shoulder pain level, and microcirculatory characteristics at MTrPs between the two groups were compared. It was found that shoulder pain level was significantly higher in the patient than in the control group (p < 0.001). Deviation of the MMBF value beyond the postulated “normal range” of 60–80 was significantly higher in the patient than in the control group (p < 0.001). The MMBF deviation was significantly correlated with shoulder pain level, pain duration, and the symptom effect (p < 0.01, n = 32). A normal range for the MMBF of 60–80 on the shoulder near MTrPs is hypothesized for the first time based on this study. Noninvasive LDF can be used to assess abnormality in the MBF on shoulder MTrPs at an early stage.

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