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,,,(,710061):,,;HE,61.17mm0.69mm;,60.94mm0.54mm;,;:;;;:R780.2:A:167128259(2003)0520510203AnexperimentalstudyoftoothmovementLuXiuli,ChenXi,LinHong,LiFangping(DepartmentofStomatology,FirstHospitalofXipanJiaotongUniversity,Xipan710061,China)ABSTRACT:ObjectiveTostudythemechanismoftoothmovementbymodelmeasurementandhistologicalobservation.MethodsThesecondpremolarteethof9heathyhybriddogswereusedasexperimentteeth.Thesecondpremolarmovementdistancewascalculatedandanalysedbymeasuringthemodels.WeobservedHEandtrichromestainhistologicalchangesoftheexperimentalteethbylightmicroscope.ResultsTheexperimentalteethwithnoneighborteethandwithorwithoutantagonistteethmigratedmesially1.17and0.69,respectivelyatweek6;Theexperimentalteethwithnodistalneighborbutwithorwithoutantagonistteethmigrateddistally0.94and0.61,respectively,atweek6.Therewerenoobviousdifferencesforperiodontaltissuesinallthegroups,andtherewerenewlybornonproperalveolarbonesurface.ConclusionThedirectionandthemovementdistanceofexperimentalteethwerecloselyrelatedwithoralinternalstress,transseptalfibersandresistanceforce;themigrationofteethisrelatedwiththereconstructionofalveolarbonesandthestressdistributioninthebone.KEYWORDS:toothmovement;alveolarbone;cementum;dog:2003205206:2003206218:(19612),(),.,,1:;;;,,,11.1991.5,1215kg,4,5,1.21.2.19,8121:4,,,,2:4,,,,1.2.2846,1mgkg-130gL-1(3%),3,,245200310()JournalofXipanJiaotongUniversity(MedicalSciences)Vol.24No.5Oct.2003,,,36(3,),1346,1.2.36,104%()7d,,,,5mHE,1041.2.4 xs,t22.111Table1Thedistanceofsecondpremolarteethingroups1and2( xs,n=4,mm)GroupWeeks13Weeks46TotalGroup1Left0.430.260.69Right0.790.381.17Group2Left-0.32-0.22-0.54Right-0.55-0.39-0.94Positivevalueindicatedmedialtoothmovement,whilenegativevalueindicateddistaltoothmovement;Thesecondpremolarteethofcontrolledtrialanimalhadnochangesat3and6weeks;Com2parisonbetweentheleftandtherightingroups1and2P0.05;Comparisonbetweengroups1and2P0.05;Comparisonbetweenweeks13andweeks46,P0.05.,,;,,,1213462.22.2.1,,,,,,2.2.2,;,;,,,2.2.3,HE,,,(1);,,,,(2)11Fig.1Theperiodontaltissuesonthesideofmovementofsecondrightpremolarteethingroup1(HE,40)21()Fig.2Theperiodontaltissuesonthesideofmovementofsecondrightpremolarteethingroup1(3modifiedcolors,40)2.2.4HE;,,,1(3),1155,,,.;,,,,;,,,(4)31Fig.3Theperiodontaltissuesontheoppositesideofmovementofsecondrightpremolarteethingroup1(HE,40)41Fig.4Theperiodontaltissuesontheoppositesideofmovementofsecondrightpremolarteethingroup1(3modifiedcolors,40)2.2.56,,312,,2-4,,,5,,:,,,,,;,,,,;,,12,1346,136HE,46Bodner6,,Pietrovski7:15d;520d;2060d,8;,,HE,,,;,,,,(3)215()241DIGFAELISATable1ThecomparisonoftestingresultsbetweenDIGFAandELISADIGFAELISA+-Total+1786184-5137142Total1831433261,ELISAHP2CagA,DIGFA95.8%,97.3%,96.6%2.3DIGFA46,HP2CagAIgG50,DIGFA376d,,4,3,CagAHP,,HP,CagAHP5(UBT),6,78HP,CagAHP,,ELISA,,CagAHP,,::,,ELISA:CagA,,9,10,,15nm,:,,pH,:,,35min,,,:[1],.J.,2000,8(2):2206-2207.[2],,,.HP2cagAJ.,2000,8(2):131-134.[3],,.cagA/CagAJ.,2001,9(5):560-562.[4RoeCD,CourtoyPJ,BaudhuimP.AmodelofproteincolloidalgoldinteractionJ.JHistochemCytochem,1987,35:1191-1198.[5MaedaS,OguraK,YoshidaH,etal.Majorvirulencefactors,VagAandCagA,arecommonlypositiveinHelicobacterpyloriisolatesinJapanJ.Cut,1998,42:338-343.[6],,.M.:,1997.393-402.[7],,,.J.,1999,22(3):169-170.[8].J.,2000,8(1):103.[9WangBL,ScopsiL,MartvigM,etal.SimplifiedpurificationandtestingofcolloridalgoldprobesJ.Histochemistry,1985,83:109-115.[10SenoS,AkiteM,HsuchCL.Anewmethodoftheimmunocyto2chemicaldetectionofcellularantigensforlightandelectronmi2croscopyJ.Histochemistry,1989,91:449-454.()(512),,;,:[1],,,.J.,2000,35(2):115-117.[2RouxD,MeunierC,WodaA.AbiometricanalysisintheratofthehorizontalcomponentofphysiologictoothmigrationanditsresponsetoalteredocclusalfunctionJ.ArchOralBiol,1993,38:957-962.[3],,,.J.(),2002,23(5):496-498.[4],,,.XJ.,2002,23(1):70-72.[5MossJP,OictonDGA.Short2termchangesinthemesiodistalpo2sitionofteethfollowingremovalofapproximalcontactsinthemonkeymacacafascicalarisJ.ArchOralBiol,1998,27:273-278.[6BodnerL,KaffeJ,LittnerMM,etal.Extractionsitehealinginrats.AradiologicdensitometricstudyJ.OralMedOralPathol,1999,75(3):367-372.[7PietrokovskiJ,MasslerM.Ridgeremodelingaftertoothextrac2tioninratsJ.JDentalRes,1967,46:222-231.[8KagayamaM,AkitaH,SasanoY,etal.Localizationofuncalci2fiedcementuminadultratmolarootsanditsrelationtophysiolog2icaltoothmovementJ.ArchOralBiol,1994,39:829-834.()