Jiayu Zhang1,2,3,4, Yuzhi Yang1,2,3,4, Xue Han1,2,3,4, Tingting Lan1,2,3,4, Fei Bi1,2,3,4, Xiangchen Qiao5, Weihua Guo6,7,8,9. 1. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. 2. National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. 3. National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. 4. Department of Pediatric Dentistry, West China School of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. 5. Chengdu Renjitiancheng Biotechnology Limited Corporation, Chengdu, People's Republic of China. 6. State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. guoweihua943019@163.com. 7. National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. guoweihua943019@163.com. 8. National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. guoweihua943019@163.com. 9. Department of Pediatric Dentistry, West China School of Stomatology, Sichuan University, No. 14, 3rd Sec. Ren Min Nan Road, Chengdu, 610041, Sichuan Province, People's Republic of China. guoweihua943019@163.com.
Abstract
BACKGROUND: The effectiveness of anterior crossbite treatment in preschool-aged children depends on the treatment design and patient compliance. Common early treatment appliances with steel wires and acrylic resin can bring about numerous problems, such as toothache, sore gums and mucous membrane injury. The aim of this study was to propose a new clear removable appliance to provide preschool-age children with an improved experience of early occlusal interference treatment. METHODS: Appliances were designed with the help of 3-dimensional (3D) digital reconstruction oral models and fabricated using 3D printing technology and the pressed film method. Then, the mechanical properties of the original dental coping sheet and thermoformed aligners were assessed in a simulated intraoral environment. Preschool-age participants who displayed anterior crossbite were recruited in this study. Records (photographs and impressions) were taken before the treatment (T1), during the treatment (T2) and at the end of the treatment (T3). The effects of treatment were evaluated by clinical examination and questionnaires. RESULTS: Normal degrees of overbite and overjet in the primary dentition were achieved using this new appliance. Dental and soft tissue relationships were improved. Questionnaires showed that the safety evaluation, degree of comfort and convenience grades of the appliance were all relatively high. CONCLUSION: This explorative study demonstrates that our new clear removable appliance is able to correct early-stage anterior crossbite in a safe, comfortable, convenient and efficient way. Thus, it is a promising method to correct a certain type of malocclusion, and its clinical use should be promoted in the future.
BACKGROUND: The effectiveness of anterior crossbite treatment in preschool-aged children depends on the treatment design and patient compliance. Common early treatment appliances with steel wires and acrylic resin can bring about numerous problems, such as toothache, sore gums and mucous membrane injury. The aim of this study was to propose a new clear removable appliance to provide preschool-age children with an improved experience of early occlusal interference treatment. METHODS: Appliances were designed with the help of 3-dimensional (3D) digital reconstruction oral models and fabricated using 3D printing technology and the pressed film method. Then, the mechanical properties of the original dental coping sheet and thermoformed aligners were assessed in a simulated intraoral environment. Preschool-age participants who displayed anterior crossbite were recruited in this study. Records (photographs and impressions) were taken before the treatment (T1), during the treatment (T2) and at the end of the treatment (T3). The effects of treatment were evaluated by clinical examination and questionnaires. RESULTS: Normal degrees of overbite and overjet in the primary dentition were achieved using this new appliance. Dental and soft tissue relationships were improved. Questionnaires showed that the safety evaluation, degree of comfort and convenience grades of the appliance were all relatively high. CONCLUSION: This explorative study demonstrates that our new clear removable appliance is able to correct early-stage anterior crossbite in a safe, comfortable, convenient and efficient way. Thus, it is a promising method to correct a certain type of malocclusion, and its clinical use should be promoted in the future.
Entities:
Keywords:
Anterior crossbite; Early treatment; New clear removable appliance; Occlusal interference