Cerebral blood velocity during mastication in maxillary defect patients and complete dentition persons
GUO Ya-juan
PAN Shuo
LIU Hong-chen
BU Rong-fa
Abstract：Objective:To investigate the difference of the cerebral blood flow between the maxillary defect and the control group.Methods:16 patients with maxillary defect due to tumor resection were selected,and 16 complete dentition persons were selectedas control group.Shrink of peak velocity (Vs),end-diastolic peak velocity (Vd),average peak velocity values (Vm) of middle cerebral artery (MCA) were measured by transcranial Doppler ultrasound detector.Twogroups were measured on the following 3 time points:0min,5min,10min after empty mastication.Variance for repeated measures data was analyzed with SPSS 13.0.Results:There was significant difference in Vs,Vd and Vm between two groups(P＜0.05).The peak velocity of the control group was higher than that of the patients group at each time point.Time factors had significant impact to Vs,Vd (P＜ 0.05),As mastication time increased,the mean peak velocity increased.The influence of time factor and defect factor on Vs,Vd and Vmwas statistically significant (P＜0.05).Conclusion:Compared with the complete dentition persons,Cerebral blood velocity during mastication in maxillary defect patients decreases.The chewing movement can significantly increase cerebral blood velocity of MCA,and then increase the blood supply of the corresponding brain region.The cerebral blood velocity is accelerated with the chewing time increasing (total chewing 10min).
Keywords：maxillary defectmasticationcerebral blood velocity
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 73-76 )