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The object of this investigation is to study on the alternation of blood flow for inflammatory and non-inflammatory state in attached gingiva on maxillary 1st molar region. For the of experiment of rheogramatic change, two non-inflammatory state and 4-inflammatory state young man (age 22-24) were selected to have mouths clean and an abscense of restoration material. experiment were progressed with various condition which were tilting the head to right or left side, compression of caroid arteries right or left side, postual change and 2% lidocaine injection. All experiment were carried out by the use of modified denture plate which were facilitated by 3 silver plate that was connected with electrode each other. Common electrode was fixed at the portion of median suture line of palate and other electrodes were fixed in 1st molar of attached gingival region bilaterallye the electrical. conductivities.which were evoked between common and exploring electrodes in both sides were detected and recorded on the phisiography, Co) and high-gain preamplifier simultaneousely. The following results were obtained by the method above described. 1) In normal attached gingiva, blood flow was decreased at the side of compressed portion but in inflammatory condition, blood flow was not decreased as compared with the control values. 2) In normal attached gingiva, tilted side was increased and opposite side was decreased in blood flow as compared with The control values, but in inflammatory condition, it was not similar to above result and the opposite side was increased blood flow as compared with control values. 3) In time of the postural change from sitting to lying, blood flow was increased as compared with control values. 4) In normal attached gingiva, blood flow was decreased in time of 2;0 lidocaine injection at the portion ;of maxillary tuberosity but in inflammatory condition, blood flow was not decreased as compared with control values. It was considered that above mentioned phenomenon was manifested by the action of small dose epinephrine which affected to venous or venous stagnation.
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