Early dental caries detection by method of PNC-diagnostics: comparison with visual and x-ray methods

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The results of hard tooth tissues research by the optical PNC-method [1-3j in experimental and clinical conditions are presented.In the experiment under 90 test-sample of tooth slices with thickness about 1 mm (enamel, dentme and cement) were researched. The results of the experiment were processed by the method of correlation analyze.Clinical researches were executed on teeth of 2 10 patients. The regions of tooth tissue diseases with initial, moderate and deep caries were investigated. Spectral characteristics of intact and pathologically changed tooth tissues are presented and their peculiar features are discussed.The results the optical PNC-method application while processing tooth carious cavities are presented in order to estimate efficiency of the mechanical and antiseptic processing of teeth.It is revealed that the PNC-method can be used as for differential diagnostics of a degree dental carious stage. as for estimating of carefulness of tooth cavity processing before filling.

Section: Second Stage Of the Researchsupporting

confidence: 74%

Express diagnostics of intact and pathological dental hard tissues by optical PNC method

Masychev¹,

Alexandrov²

2000

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“…High sensitivity of the method, possibility of quantitative assessments of the study results in real time meet modern requirements imposed upon the clinical diagnostics, including urgent purulent dentistry surgery [7,8].…”

Section: Methodsmentioning

confidence: 97%

<title>Express diagnostic of anaerobic infection and disbacteriosis by optical PNC method in clinical dentistry</title>

Alexandrov¹,

Koz'ma²,

Taubinsky³

et al. 2000

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In this research a new way ofexpress (real time) diagnostics ofanaerobic infection and disbacteriosis is suggested. The express diagnostics of anaerobic infection allows to perform quick assessment of the injury microbiocenosis, the state of gastroenteric tract, the disbacteriosis presence and the degree of its development, to follow up dynamics of microflora variations in the process ofmedication treatment. The research were performed with optical PNC-method. The basic ofthe method is in registration ofstimulated (secondary) radiations and registration oftheir space fields, which occur in the process ofprobing radiation interaction with biological tissues and their active elements. The process is called Photon-undulatory Nonlinear Conversion or in short PNC-processThe optical diagnostic PNC-method developed here allows detecting the presence ofanaerobic microflora directly at the bed of a patient. It makes possible to control the dynamic of patient rehabilitation process, providing strictly individual assessments.

“…These methods suggest registration of the induced autofluorescence of biological tissues in vivo and in vitro induced by laser irradiation in various spectral ranges [6,3]. In the coarse ofthe studies, executed mainly in vitro, it has been shown that: High sensitivity of the method, possibility of quantitative assessments of the study results in real time meet modem requirements imposed upon the clinical diagnostics, including urgent purulent dentistry surgery [7,8].…”

Section: Introductionmentioning

confidence: 99%

<title>Optical PNC-diagnostics microbiocenosis and its disturbances in real time</title>

Alexandrov¹,

Masychev²

2000

Self Cite

In this research a new way of express (real time) diagnostics of microbiocenosis and its disturbances is suggested. The express diagnostics of anaerobic infection allows to perform quick assessment of the injury microbiocenosis, the state of gastroenteric tract, the disbacteriosis presence and the deee of its development, to follow up dynamics of microflora variations in the process of medication treatment.The research were performed with optical PNC-method. The basic of the method is in registration of stimulated (secondary) radiations and registration of their space fields, which occur in the process of probing radiation interaction with biological tissues and their active elements. The process is called Photon-undulatory Nonlinear Conversion or in short PNC-process (PNC -method, PNC-diagnostic). [1][2][3].The optical diagnostic PNC-method developed here allows detecting the presence of anaerobic microflora directly at the bed of a patient. It makes possible to control the dynamic of patient rehabilitation process, providing strictly individual assessments.