Research Of Cervical Vertebrae Posture Differences Of Malocclusion Patients With Different Facial Types

Objective: Through the study of the characteristics and differences of patients’ cervicalvertebrace posture with different facial types to predict the sagittal growth of the patients.Methods: To select30cephalometric radiographs of the patients with classI, classII, class IIImalocclusion which in their growth peak period and30in their later peak period from theorthodontic department of the stomatology hospital,measure and analyse the variance of thehead positionSN-VEL，SN-OPT，SN-CVT，OPT-CVT，CVT-HOR，and the variance of thecraniolfacial structures: SNA，SNB，ANB, SN-GoGn，Yaxis,Go-Gn,ANS-PNS.1.Compare thedifference of the cervical vertebrace postures of patients with different sagittal skeletal patternsmalocclusiond in the same development period, and observe the corrections between the changetrends of craniocervical angle and sagittal craniofacial.2. analyse the significant correlation ofthe head position and the variance of the craniolfacial structures.Results：1. before the growth spurts: the indexes of SN-VEL, SN-CP, OPT-CVT in the class I,class II, class III among the groups were not statistically significant (P>0.05); and the index ofSN-OPT, SN-CVT, CVT-HOR in the class I, class II, class III among the groups werestatistically significant (P<0.05).after the growth spurts: the indicators of SN-VEL, SN-CP,SN-OPT, SN-CVT, OPT-CVT, CVT-HOR in the class I, class II, class III among the groupswere statistically significant (P<0.05).2. the Cervical Vertebrae Posture indicators of SN-VEL,SN-CP, SN-OPT, SN-CVT and variance of the craniolfacial structures: SNA，SNB，ANB, Yaxisof the patients before and after their growth spurts were statistically significant (p<0.05).Conclusion: Cervical Vertebrae Posture Differences among before and after growth spurtswith different sagittal skeletal pattern were statistically significant (P<0.05). Craniofacialmorphology and cervical vertebrae posture in patients in the process of the development isinfluenced.