发育期髁突颈部骨折坚固内固定对下颌骨生长发育影响的实验分析

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1、英文摘要AnexperimentalstudyofthecondylarfractionragidinternalfixationinfluenceonthemandibulargrowthanddevelopmentatthedevelopmentstagesABSTRACTobjective：Thecondyleisthegrowthcenterofthemandible．Thetreatmentofcondylarfractionwilldirectlyaffectthenormaldevelopmentofthemandible，occlusalfunctionandfacia

2、lappearance．Aboutthetreatmentofthechild’Scondylarfraction，mostscholarstendtoconservationtreatment，theybelievethatoperationonthechildrenatthedevelopmentstageswillaffectthegrowthanddevelopmentofcondylar，thusimpacttheshapeofthemandibularandthefunctionofjoint，SOitwillleadtofacialdeformitiesanddiffic

3、ultlyopening．Akeepingsurgicalview’Sscholarsbelievethatthefracturefragmentsandthedisplacementdidnotaccuratelyreset，althoughchildrencondylarhaveastrongerself-repairfunctionofconversion，butbeyondacertainlimit，themorphologyandfunctionCannotreachthenormalstatebyself-healing．Soseriousdisplacementofthe

4、fractureneedtobeoperatedtoreset，andearlyfunctionaltrainingcallpreventdegradationandadhesionofthearticularsurfaceaRersurgery．Thisstudyusedexperimentalanimals，establishedmandibularcondylarneckfracturemodeltosimulatetheactualclimcalstate，mademicro—osteosynthesisfixationfordynamic4英文摘要observationone

5、xperimentalanimals，1ateralobservedwithskullX．rayflankfilm，generallymeasuredthelowerjawspecimensstudycomparatively,observinginfluenceofdifferentcondylefractiontreatmentmethodsonthedevelopmentofthemandible，SOastoprovideatheoreticalbasisforthechoiceofthechildrenmandibularfracturetreatment．Methods：H

6、ealthNewZealandrabbits21(7weeks)，andweighingabout1．2kg，wererandomlydividedintothreegroups，eachofthetwonormal，fiveexperimentalanimals，cage·rearing．Captiveweekbeforeexperiment，anesthetizedtherabbitsby3％sodiumpentobarbital，2ml／kgintravenousinjectionfromear'svein，localanesthesiaby2％lidocaine，surgery

7、．After,theanimalfixedteamwerefedwithsoakedfoodforoneweek，non—fixedfortendays，animalswereseparatelykilledafterone，twoandthreemonths，severedneck，andfixedsamplesin10％formaldehydesolutionforforty-eighthours，incisedtheskullfromth