Objective:To explore the effect of gingival biotype on gingival blood flow(BF)changes under ortho-dontic forces by laser speckle contrast imaging(LSCI).Methods:The study recruited a total of 24 subjects who met the inclusion criteria,with 12 individuals allocated to the thin gingival group and another 12 allocated to the thick gingival group.A force of 150 g was randomly applied between either the left or right maxillary canines and the first molar in each volunteer.Subsequently,dynamic monitoring of BF using LSCI was conducted at various time points:before force application,at 30 minutes,1 day,3 days,7 days,and 14 days.Results:Through inter group compari-son,there were significant differences in BF between the thin group and the thick group at various time points,with the BF of the thick group significantly higher than that of the thin group(P＜0.05).After intra group comparison,there were significant differences in BF at each time point in each group(P＜0.05).After applying force,local BF decreased to the minimum value within 30 minutes to 1 day,rose to the maximum value around 7 days,and basically returned to the baseline by 14 days.In a resting state without force load-ing,there was a significant difference in BF between the free gingiva and interdental papilla(P＜0.05),and the BF of the free gingiva was significantly lower than that of the interden-tal papilla area.Conclusion:LSCI is a useful tool to real-time monitor gingival BF during orthodontic treatment.The BF of thin gingival type was significantly lower than that of thick gingival type.
关键词
激光散斑衬比成像/牙龈血流/牙龈生物型/牙周健康
Key words
laser speckle contrast imaging/gingival blood flow/gingival biotype/periodontal health
维普
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