Clinical Study Of The Relationship Between Adult Dental Occlusial Plane And Upper Airway Morphology And Function And Hyoid Position

The airway is an important physiological human cranial and maxillofacial structure,is closely linked with breathing,pronunciation,and other functions,There were many on the influence factors of the airway,as the hard and soft tissues surrounding,breathing,obesity,hyoid position,etc.malocclusion is the most common diseases,dental clinicians on orthodontic process to different impact on the structure and function of the airway,In the process of clinical orthodontic will by adjusting the occlusal plane achieve perfect,Will ? malocclusion,for example a flat plane steepening,will ? malocclusion in steep plane flatten,And on the plane and airway ideological function and the correlation with hyoid position research is rare,This topic in the exclusion of osseous deformity caused by differences in the plane of the us under the premise of observing osseous ? classes are on the plane and Angle of the crowd function and airway form and hyoid position of the relationship.Objective:Through clinical trials to research the relationship of the occlusion plane and airway function and the location of tongue.Provide guidance for clinical treatments of the wrong micromaxillary deformity scheme,Remind clinicians to observe the changes of airway function in the form in the process rectification.Methods:Collect 80 class ? objects and conforms to the research into the exclusion criteria.Inclusion criteria for: 1,the han nationality,permanent teeth,age 18 to 30 years old,0.7°?ANB?4.7°,22°?FH-MP?32°,BMI of18.5 ~ 23.9(MBI for body mass index(BMI),is the weight in kilograms divided by the square of height in meters results,is a measure of body fat index).2,there is no history of trauma,no cleft lip and palate,no palatine pharyngoplasty and jaw surgery,no temporal jaw joint disease history and history of orthodontic treatment.3,facial symmetry,mouth and open mouths without exception.4,no adenoidectomy,tonsil hypertrophy,no pharyngeal lesions,rhinitis and sinusitis.5,no systemic disease and congenital diseases,family history.On the questionnaire,oral cavity,sleep test,x ray film measuring operation,etc.According to the OP-SN numerical grouping.Such as 10°?OP-SN < 15°;15°?OP-SN < 20°;20°?OP-SN<25°.The number of each group was 18,42,20.Variance analysis and multiple linear regression analysis,compare the differences between different groups and cranial and maxillofacial structure and airway function on linear relationship.According to the measured results corresponding conclusions.Results:1.Different in each plane X-ray related measurement,three sets of data of SNA,SNB,ANB exists difference and the difference was statistically significant,the P were 0.004,0.000,0.018,to the plane Angle is different,its SNA,SNB,ANB is also different.And airway width on behalf of SPPS,MPS,IPS,on behalf of the nasopharyngeal after the height of the S-PNS,on behalf of nasopharyngeal width after Ba-PNS and on behalf of hyoid position JH,H-C3 were no statistical difference.2.Sleep monitoring related indicators,said on airway function of average Sp O2,lowest Sp O2,average pulse frequency and the P were greater than 0.05,the three groups of different combined plane Angle of airway function no statistical difference.3.the occlusion plane and X-ray value of multivariate linear regression analysis,the SNA,SNB r negative and P are less than 0.05,said the plane and SNA,significant negative correlation and SNB,ANB r positive and P are less than 0.05,indicated the plane are positively correlated with ANB and a significant relationship,and the other on behalf of the upper airway form and hyoid position of each index P were greater than 0.05,the correlation is not significant.4.the occlusion plane associated with sleep monitoring index of the multivariate linear regression analysis,Sp O2 on average,the lowest Sp O2,average pulse frequency and the P were greater than 0.05,the occlusion plane and the correlation between the three indicators are not significant.Conclusion:1.Osseous ? class are close plane Angle of the crowd will not significantly influence on airway function and position of hyoid form.2.Osseous ? classes are on the plane and Angle of the crowd has the function of airway form and hyoid position no significant correlation,follow-up can increase the samples continue to study.3.The occlusion plane and SNA,SNB,ANB have a significant linear correlation.