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正畸治疗时牙齿移动引起的骨开裂正畸治疗时牙齿移动引起的骨开裂36、如果我们国家的法律中只有某种神灵，而不是殚精竭虑将神灵揉进宪法，总体上来说，法律就会更好。马克吐温37、纲纪废弃之日，便是暴政兴起之时。威皮物特38、若是没有公众舆论的支持，法律是丝毫没有力量的。菲力普斯39、一个判例造出另一个判例，它们迅速累聚，进而变成法律。朱尼厄斯40、人类法律，事物有规律，这是不容忽视的。爱献生正畸治疗时牙齿移动引起的骨开裂36、如果我们国家的法律中只有1正畸治疗时牙齿移动引起的骨开裂课件整理2正畸治疗时牙齿移动引起的骨开裂课件整理3正畸治疗时牙齿移动引起的骨开裂课件整理4正畸治疗时牙齿移动引起的骨开裂课件整理5S3S36Example 2 rotated canines and crowding of the incisors are found in the pretherapeutic mandibular situationExample 2 7corresponding pretreatment CT examination：3D-reconstruction narrow frontal mandibular alveolarprocess with thin facial bone platescorresponding pretreatment CT 8Clinical situation after two years of orthodontic treatmentClinical situation after two y9Corresponding CT examination：3D-reconstruction extensive facial dehiscences above the roots of the incisors and caninesCorresponding CT examination：10Dental anatomyAlveolar bone proper Supporting alveolar bone Cortical plate Spongy bone Dental anatomyAlveolar bone pr11bone traces tooth movement?A basic axiom in orthodontics is whenever orthodontic tooth movement occurs,bone around the alveolar socket will remodel to the same extent bone traces tooth movement?12The truth isIn the vertical dimension:during orthodontic tooth extrusion,bone increase is usually less than the dental displacement,leading to an increase in the clinical crown.In the transverse dimension:bone remodeling/tooth movement ratio of tooth retraction with tip and with torque is 1:2 and 1:2.35 respectivelyThe truth isIn the vertical d13Repair of the perforation site bone dehiscences were partly repaired in the retention period,but it was insufficient to cover the root completely Repair of the perforation site will lead to relapse of the teethRepair of the perforation site14conclusionretraction of the incisors is limitedforcing the tooth against the cortical bone may cause adverse sequelaesurgical orthodontic treatment should be taked when tooth movement exceed“bone wall”conclusionretraction of the in15anterior maxillary subapical osteotomyinitial examinationanterior maxillary subapical o16before surgery：maxillary first premolars and left mandibular central incisor were extracted.All residual third molars were also extractedbefore surgery：maxillary first17after surgery：anterior maxillary dentoalveolar segment repositioned 4mm posteriorly and 3.5 mm upward.after surgery：anterior maxilla18after 2 years of retention：after 2 years of retention：19reference1.AlexanderD.Vardimon,EyalOren.Corticalboneremodeling/toothmovementratioduringmaxillaryincisorretractionwithtipversustorquemovements.AmericanJournalofOrthodonticsandDentofacialOrthopedics,Volume114,Number52.SimtenSarikaya,BulentHaydar.Changesinalveolarbonethicknessduetoretractionofanteriorteeth.AmericanJournalofOrthodonticsandDentofacialOrthopedics.July20193.HeinrichWehrbein,PrivDozDrmed.Humanhistologictissueresponseafterlong-termorthodontictoothmovement.AmericanJournalofOrthodonticsandDentofacialOrthopedics,Volume107,No.44.JavadHazratiMarangalou,FarzanGhalichi.Numericalsimulationoforthodonticboneremodeling.orthodonticwaves.(2009):64-715.ManabuMiyamoto,TakashiYamashiro.Surgicalorthodontictreatmentforseveremaxillaryprotrusionwithaggressiveperiodontitis.orthodonticwaves.(2019):171-178referenceAlexander D.Vardimon20Thank you!Thank you!211 1、最灵繁的人也看不见自己的背脊。、最灵繁的人也看不见自己的背脊。非洲非洲2 2、最困难的事情就是认识自己。、最困难的事情就是认识自己。希腊希腊3 3、有勇气承担命运这才是英雄好汉。、有勇气承担命运这才是英雄好汉。黑塞黑塞4 4、与肝胆人共事，无字句处读书。、与肝胆人共事，无字句处读书。周恩来周恩来5 5、阅读使人充实，会谈使人敏捷，写作使人精确。、阅读使人充实，会谈使人敏捷，写作使人精确。培根培根1、最灵繁的人也看不见自己的背脊。非洲2、最困2222
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