The Changes Before and After the Application of the PASS Technique in Treating Angle Class Ⅱ Division 1 Malocclusion of Patients with Two Different Types of Constitution in Traditional Chinese Medicine
Objective This study aims to compare the changes in dental and craniofacial parameters,as well as constitutional indicators,following the utilization of the PASS orthodontic technique for treating patients with Angle Class Ⅱ division 1 malocclusion who possess either a balanced constitution or a Yin-deficiency constitution.Methods A total of twenty patients diagnosed with Angle Class Ⅱ division 1 malocclusion,who visited the hospital's Department of Stomatology between February 2019 and February 2023,were selected for this study.Based on their constitutional types,ten patients with a balanced constitution and ten patients with a Yin-deficiency constitution underwent treatment using the PASS orthodontic technique.The bracket detachment rate during treatment,changes in facial morphology,dental and craniofacial parameters,as well as constitutional indicators before and after treatment were compared between the two groups.Results The group with a balanced constitution exhibited significantly lower bracket detachment rates compared to the group with a Yin-deficiency constitution(P＜0.001).The results of cephalometric measurements before and after implementing the PASS correction technique on patients with different constitutions exhibited statistically significant differences(P＜0.05).Six months after completing orthodontic treatment,patients with a Yin-deficiency constitution showed significant improvement in constitutional indicators compared to those with a balanced constitution(P＜0.05).Conclusion Compared to patients with a Yin deficiency constitution and malocclusion,patients with a balanced constitution and malocclusion have significant advantages in terms of bracket detachment and the transformation of their constitution after orthodontic treatment.Therefore,different constitutions have certain guiding significance for correcting malocclusions.
traditional Chinese medicine constitutionClass Ⅱ Division 1PASS technologymalocclusionorthodontics
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