青年人群前磨牙牙髓血流灌注量研究

Study on Pulpal blood flow of premolars in young people

目的:应用激光多普勒血流仪(LDF)检测青年人群的前磨牙牙髓血流灌注量(PBF),统计分析青年人群前磨牙生理状态下PBF参考值范围,探讨年龄、性别、牙位对PBF的影响。方法:在右江民族医学院、百色学院两所高校的在校生及就诊于右江民族医学院附属医院口腔科的患者招募150名志愿者。使用LDF进行前磨牙PBF值检测,硅橡胶印模材料将LDF探头垂直固定于前磨牙颊侧中线距龈缘2~3 mm的待检测区域,进行检测及记录检测结果,并讨论影响PBF的相关因素。结果:(1)健康人群前磨牙PBF参考值范围:男性上颌第一前磨牙:(10.19±4.28)PU;上颌第二前磨牙:(11.29±4.33)PU;下颌第一前磨牙(10.07±4.63)PU;下颌第二前磨牙(10.67±4.39)PU。女性:上颌第一前磨牙(10.20±4.68)PU;上颌第二前磨牙(10.57±4.22)PU;下颌第一前磨牙(9.46±4.15)PU;下颌第二前磨牙(10.35±4.78)PU。(2)上颌前磨牙PBF值较下颌同名前磨牙PBF值高,差异有统计学意义(P<0.05)。(3)第二前磨牙PBF值较同颌第一前磨牙PBF值高,差异有统计学意义(P<0.05),上下颌第二前磨牙PBF值与第一前磨牙PBF值间存在弱正相关性(P<0.05)。(4)同颌同名牙PBF值差异不存在统计学意义(P>0.05)。(5)25、44PBF值存在性别差异(P<0.05)。PBF值与年龄间的相关性不存在统计学意义(P>0.05)。结论:青年人群上颌前磨牙的PBF值较下颌前磨牙的PBF值高,第二前磨牙的PBF值较同颌第一前磨牙血流值高,同颌同名前磨牙PBF值不存在差异,可作为对照牙选择。

A IM:Laser doppler flowmetry(LDF)was used to measure Pulpal blood flow(PBF)in premolars of young people,analyzing the reference range and the impact of age,gender,and tooth position on PBF.METHODS:A cohort of 150 participants,consisting of students from Youjiang Medical College for Nationalities and Baise College,as well as patients from the Department of Stomatology at the Affiliated Hospital of Youjiang Medical College for Nationalities,were enlisted for this study.LDF was utilized to measure the PBF values of premolars.The LDF probe was positioned vertically 2~3 mm from the gingival margin of the buccal midline of the premolar using silicone rubber impression material.The findings were documented and factors influencing PBF were analyzed.RESULTS:①Healthy population premolar PBF reference range:Male maxillary first premolar:(10.19±4.28)PU;maxillary second premolar:(11.29±4.33)PU;mandibular first premolar(10.07±4.63)PU;the mandibular second premolar was(10.67±4.39)PU.Female:maxillary first premolar(10.20±4.68)PU;maxillary second premolar(10.57±4.22)PU;mandibular first premolar(9.46±4.15)PU;the mandibular second premolar was(10.35±4.78)PU.②Maxillary premolars had a higher PBF value than mandibular premolars with the same name(P<0.05).③The second premolar had a significantly higher PBF value than the first premolar(P<0.05).There was a slight positive correlation between the PBF of the two premolars(P<0.05).④There was no significant difference in PBF of homonymous teeth(P>0.05).⑤There were gender differences in PBF values of There were gender differences in PBF values of 25 teeth and 44 teeth(P<0.05).CONCLUSION:Young people’s maxillary premolars have higher PBF values than mandibular premolars,and second premolars have higher PBF values than first premolars in the same jaw.The PBF values of premolars in the same jaw are similar,making them suitable as control teeth.