Evaluation of gingival microcirculation by a laser-doppler flowmeter

Boutault, F; Cadenat, H; Hibert, Pierre Jean

doi:10.1016/s1010-5182(89)80080-0

Cited by 20 publications

(15 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A major drawback is that LDF can only detect red blood cell movement in a small volume of tissue (1 mm 3 ); thus, variables such as the number of vessels with active flow, changes in vessel diameter and flow in individual micro-vessels cannot be analysed. The small measuring area may also influence the reproducibility of the results due to the fact that a minimal displacement of the optical probe would lead to a change in the investigated area [20]. Another source of error in LDF measurements are the artefacts caused by tissue motion in relation to the probe.…”

Section: Limitationsmentioning

confidence: 99%

“…LDF has been used to assess blood flow for intact microvascular systems such as the skin, the retina, gut mesentery, renal cortex and mucous membranes [5,6]. Dental applications include LDF readings (LDFRs) of periodontal ligament [7], pulpal blood vessels [8][9][10][11][12], gingival or sulcular blood flow in health and disease [13][14][15][16][17][18], evaluation of the degree in healing and revascularization of surgical wounds [19], the effect of orthodontic treatment [20] or the injection of vasoconstrictive anaesthetics on blood flow [21]. Single-point LDF, the technique mentioned above, shows good temporal resolution, poor spatial resolution and poor reproducibility in low capillary density tissue areas [22,23].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Todea¹,

Canjau²,

Miron³

et al. 2016

Microcirculation Revisited - From Molecules to Clinical Practice

View full text Add to dashboard Cite

This chapter presents the most important features of laser Doppler (LD) techniques: LD flowmetry (LDF) and LD imaging (LDI), together with examples of their clinical applications in dentistry. LDF gives a constant estimation of blood flow at a specified point, whereas LDI gives a 'snapshot' of perfusion at a given point. These methods are non-invasive laser-based techniques for monitoring gingival and pulpal blood flow and could be used as a diagnostic tool. In paediatric dentistry and odontology, LDF proved to be an atraumatic real-time method used for determining the tooth vitality by monitoring the pulp microcirculation in traumatized teeth, fractured teeth and teeth undergoing different conservative treatments (e.g. bleaching, dental preparation for prosthetic restorations, etc.). In periodontology, recent studies showed the ability of LDF to evaluate the health of gingival tissue in different types of periodontal diseases. By using LDF, it is also possible to evaluate the outcome after different periodontal treatments. The laser Doppler line scanning can be used for recording the gingival healing process after a surgical procedure in the anterior area of the oral cavity.

show abstract

Section: Limitationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Todea¹,

Canjau²,

Miron³

et al. 2016

Microcirculation Revisited - From Molecules to Clinical Practice

View full text Add to dashboard Cite

show abstract

“…This technique was developed to assess blood flow in the retina, gut mesentery, renal cortex, and cerebral cortex, or on the skin [5,6]. Numerous publications already have established that it is possible to record blood flow changes from intraoral sites [3,[6][7][8][9][10][11][12][13][14]. However, little is known about the microcirculation of the lingual rnucosa during rest or in response to stimulation.…”

mentioning

confidence: 99%

Oral mucosal blood flow following dry ice stimulation in humans

Heckmann

Hilz

Hummel³

et al. 2000

Clinical Autonomic Research

View full text Add to dashboard Cite

The aim of the current pilot study was to establish a procedure that would allow the investigation of microcirculatory changes in the oral cavity. The authors studied the effects of painful stimulation using dry ice (CO2). To investigate potential regional differences in the change of blood flow, recordings were made for the tongue and at the mucosa of the hard palate, lip, and oral vestibule. The authors investigated 26 patients divided into groups of younger subjects (10 men, 3 women; age range 21-31 y) and older patients (2 men, 11 women; age range 54-74 y). Mucosal blood flow (mBF) was obtained at the hard palate, at the tip of the tongue, on the midline of the oral vestibule, and at the lip. Measurements were made during rest and for 2 minutes after application of dry ice for a 10-second duration, using a pencil-shaped apparatus. Blood pressure, heart rate, cutaneous blood flow, transcutaneous partial pressure of carbon dioxiode (PCO2) and partial pressure of oxygen (PO2) were recorded. Mucosal blood flow increased at all sites in response to application of dry ice (p <0.001), with peak flow at 0.5 minute to 1.5 minutes after onset of stimulation. During the 1.5 minutes to 2 minutes, blood flow decreased at all measurement sites with a tendency to return to baseline. Heart rate, blood pressure, pCO2, PO2, and cutaneous blood flow did not show significant changes. Overall, responses in older patients showed more variance when compared with younger patients. Stimulation by dry ice appears to be an effective, noninvasive, and tolerable means to investigate mucosal blood flow at different mucosal sites. Preliminary data indicate different levels of responsiveness to painful cold stimulation at different sites on the oral and perioral mucosa; particularly, mucosal blood flow response at the tongue was least pronounced. Therefore, assessment of stimulated mucosal blood flow appears to be a promising tool to investigate the pathophysiology of a number of neurologic symptoms, eg, the burning mouth syndrome.

show abstract

“…There are numerous applications of LDF in dental research as well as in dental practice, in particular, this method is used for the investigation of microcirculation and vitality of the dental pulp [37,39], periodontal ligament [40], gingival or sulcular blood flow in health and disease [41-44], the effect of orthodontic treatment [45,46], the injection of vasoconstrictive anaesthetics [47] in blood flow or assessing bone vascularity in the human mandible during implant insertion [48]. Some of these applications need to be discussed in more detail due to their clinical importance.…”

Section: Reviewmentioning

confidence: 99%

“…That is why it cannot analyse different variables, in particular, the flow in individual microvessels, the number of vessels with an active flow and changes in vessel diameter [64]. The other disadvantage emerging from this is a poor reproducibility of the results because a minimal displacement of the probe will lead to a change in the investigated area because of the density of the vascular network of the gum [46]. …”

Section: Reviewmentioning

confidence: 99%

Doppler flowmetry as a tool of predictive, preventive and personalised dentistry

Iordanishvili

Бармашева

2013

EPMA Journal

View full text Add to dashboard Cite

Periodontal lesions are considered a major problem in the global burden of oral diseases due to their high frequency and negative impact on quality of life. Periodontal inflammation is accomplished by a breakdown of microcirculatory function. Early detection of gingival microvessel dysfunction helps diagnose and prevent the progression of initial periodontal pathology. Doppler flowmetry is a useful tool in the diagnosis, monitoring, prognosis and management of periodontal patients which allows access not only of gingival blood flow but also of pulpal microcirculation. Doppler flowmeters might help to realise the ultimate target of predictive, preventive and personalised periodontology tailored with respect to the particular patient. This article highlights the main working principles of laser Doppler flowmeters and the ultrasonic Doppler flowmeters. The advances in blood flow measurement by ultrasonic flowmetry are discussed.

show abstract

Evaluation of gingival microcirculation by a laser-doppler flowmeter

Cited by 20 publications

References 4 publications

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Laser Doppler Flowmetry Evaluation of the Microcirculation in Dentistry

Oral mucosal blood flow following dry ice stimulation in humans

Doppler flowmetry as a tool of predictive, preventive and personalised dentistry

Contact Info

Product

Resources

About