1989
DOI: 10.5794/jjoms.35.2848
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Measurement of facial blood flow with laser doppler flowmeter. II. Alteration of facial blood flow by position change.

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Cited by 3 publications
(5 citation statements)
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“…However, the significantly higher pulp perfusion found in the first few minutes following movement to the supine position indicates that the equilibration of the sys temic circulation takes some time to be completed. These results are in agreement with the results of other investiga tors [17,18] who reported increases in oral mucosal blood perfusion after subjects changed from a sitting to a supine position and decreases in laser-Doppler flux after a change from supine to upright body posture.…”
Section: Discussionsupporting
confidence: 83%
“…However, the significantly higher pulp perfusion found in the first few minutes following movement to the supine position indicates that the equilibration of the sys temic circulation takes some time to be completed. These results are in agreement with the results of other investiga tors [17,18] who reported increases in oral mucosal blood perfusion after subjects changed from a sitting to a supine position and decreases in laser-Doppler flux after a change from supine to upright body posture.…”
Section: Discussionsupporting
confidence: 83%
“…Previous investigations using LDF demonstrated a variety of factors that can have impact on accuracy of PBF measurements, such as patient position and resting state, room temperature and the location of the measurement probe (Shimazaki et al . , Öberg , Ramsay et al . , Firestone et al .…”
Section: Discussionmentioning
confidence: 99%
“…Some of the main causes for the low acceptance of LDF in the dental community are economics and issues related to the design of the laser probe holder, the influence of the recording site and tooth isolation (Hartmann et al 1996). Previous investigations using LDF demonstrated a variety of factors that can have impact on accuracy of PBF measurements, such as patient position and resting state, room temperature and the location of the measurement probe (Shimazaki et al 1989, Ö berg 1990, Ramsay et al 1991, Firestone et al 1997. Signal contamination may arise from the blood flow in the palatal or the buccal gingiva (Amess et al 1993).…”
Section: Discussionmentioning
confidence: 99%
“…1995), the temperature of the environment, the position and the resting status of the patient, the position of the probe (Edwall et al. 1987, Shimazaki et al. 1989, Oberg 1990, Ramsay et al.…”
Section: Factors Influencing the Resultsmentioning
confidence: 99%
“…The LDF assessment of PBF may be highly susceptible to environmental and technique-related factors. Variables such as probe design (Ingólfsson et al 1993, Hartmann et al 1996, probe holder characteristics , Wilder-Smith 1988, Ramsay et al 1991b, McDonald & Pitt Ford 1994, Hartmann et al 1996, Musselwhite et al 1997, gingival isolation devices (Hartmann et al 1996, Vongsavan & Matthews 1996, Soo-ampon et al 2003, 2005b, flowmeter characteristics (Ingólfsson et al 1994b, Hartmann et al 1996, Odor et al 1996a,c, Roebuck et al 2000, mineralization of enamel and dentine (Vaarkamp et al 1995), the temperature of the environment, the position and the resting status of the patient, the position of the probe (Edwall et al 1987, Shimazaki et al 1989, Oberg 1990, Ramsay et al 1991b, Ingólfsson et al 1994b, Hartmann et al 1996, Odor et al 1996b), heartbeat-synchronous oscillations, tooth discolouration, stress, intake of drugs, agerelated changes, etc, may significantly influence LDF results (Okabe et al 1989, Olgart et al 1989, Heithersay & Hirsch 1993, Matthews & Vongsavan 1993, Chng et al 1996, Musselwhite et al 1997, Verdickt & Abbott 2001, Ikawa et al 2003. These factors can be categorized as below.…”
Section: Factors Influencing the Resultsmentioning
confidence: 99%