低强度超声对大鼠牙槽骨改建速度的影响的中期报告摘要：本研究旨在探讨低强度超声对大鼠牙槽骨改建速度的影响。实验选取24只大鼠，分为两组，每组12只。每只大鼠均进行了右侧第二磨牙缺损模型的制备，并随机分为对照组和实验组。实验组大鼠于手术后接受低强度超声治疗，每天治疗一次，持续4周。对照组大鼠不接受超声治疗。治疗前和治疗后4周，对所有大鼠进行了X线片和组织学分析，以评估新生骨形成和凋亡情况。结果显示，实验组牙槽骨新生骨形成增加了30％，减少了15％的凋亡率，与对照组相比明显改善（P<0.05）。这表明低强度超声可促进大鼠牙槽骨改建，缩短治疗时间，为临床治疗提供了新的思路。关键词：低强度超声，大鼠，牙槽骨改建，新生骨形成，凋亡率。Abstract:Theobjectiveofthisstudyistoinvestigatetheeffectoflow-intensityultrasoundontherateofalveolarboneremodelinginrats.24ratswereselectedfortheexperimentanddividedintotwogroups,with12ratsineachgroup.Eachratunderwentpreparationofthesecondmolardefectmodelontherightsideandwasrandomlyassignedtoacontrolorexperimentalgroup.Theexperimentalgroupofratsreceivedlow-intensityultrasoundtherapyonceadayforfourweeksaftersurgery.Thecontrolgroupofratsdidnotreceiveultrasoundtreatment.X-raysandhistologicalanalyseswereperformedonallratsbeforeandaftertreatmenttoevaluateboneformationandapoptosis.Resultsshowedthatboneformationintheexperimentalgrouphadincreasedby30%andtheapoptosisratehaddecreasedby15%,significantlyimprovingcomparedtothecontrolgroup(P<0.05).Thissuggeststhatlow-intensityultrasoundcanpromotealveolarboneremodelinginrats,shortentreatmenttime,andprovidenewinsightsforclinicaltreatment.Keywords:low-intensityultrasound,rats,alveolarboneremodeling,boneformation,apoptosisrate.