BACKGROUND Correcting skeletal class III malocclusion with anterior crossbite in adolescents using only orthodontic treatment poses challenges.This report highlights a novel approach leveraging improved superelastic N...BACKGROUND Correcting skeletal class III malocclusion with anterior crossbite in adolescents using only orthodontic treatment poses challenges.This report highlights a novel approach leveraging improved superelastic Ni-Ti alloy wire(ISW)to address these conditions effectively.CASE SUMMARY A 17-year-old male patient presented with the chief complaint of an underbite.The patient was given a diagnosis of skeletal class III malocclusion and anterior crossbite.The orthodontic treatment plan was implemented and did not require teeth extractions or orthognathic surgery.Key interventions involved the app-lication of ISW,intermaxillary elastics,and ISW unilateral multi-bend edgewise archwire.The unique combination of these techniques enabled the correction without the need for extractions or surgery.This approach leverages the advanced biomechanical properties of ISW,including its super-elasticity and shape memory,to enhance treatment efficacy.The treatment lasted 17 months,and major improvements in overjet,overbite,and alignment were achieved.The results were favorable,and stability was discovered during follow-up.CONCLUSION The application of ISW for treating skeletal class III malocclusion with anterior crossbite in a 17-year-old male patient resulted in exceptional outcomes.The treatment led to a marked improvement in the patient’s facial profile and to proper overjet,overbite,and midline alignment.These results were maintained over a one-year follow-up,indicating that a minimally invasive orthodontic approach can effectively address complex skeletal discrepancies in adolescent patients.This case illustrates that with the careful use of advanced orthodontic techniques,major skeletal challenges can be resolved without resorting to surgical procedures.展开更多
Summary: Occlusal-maxillo-facial structural change of crossbite malocclusion after orthodontic therapy by modified ACTIVATOR appliance was investigated. Eighty crossbite cases of deciduous dentition and mixed dentitio...Summary: Occlusal-maxillo-facial structural change of crossbite malocclusion after orthodontic therapy by modified ACTIVATOR appliance was investigated. Eighty crossbite cases of deciduous dentition and mixed dentition were treated by modified ACTIVATOR. Through pre- and post-treatment analysis of stone model, Schuller's position X-ray and craniofaciometrics, the change in craniofacial length, width and height in early-phase crossbite malocclusion was studied. The results showed that there was no significant change in the width of maxillary and mandibular dental arch. Maxillary length and protrusion was increased significantly, upper incisors slopped labially. The lower incisors slopped lingually, mental angle decreased more severely. The lower and posterior facial height was increased to normal level.展开更多
Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal C...Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal Class III anteroposterior discrepancies in adult patients are generally managed either by surgical-orthodontic treatment or by orthodontic camouflage through dentoalveolar compensation. Although correction with surgery may be the most effective and stable way, many patients refuse surgical treatment plan because of the costs and traumas it may bring. This case report describes the successful use of TADs with expansion auxiliary wire to treat a 24-year-old man with skeletal class III malocclusion, posterior crossbite, anterior open-bite and asymmetric occlusion, mild upper and lower dental spacing and a chief manifestation of anterior crossbite. The patient refused surgery. A treatment plan was formulated consisting of using auxiliary expansion wire to expand the maxillary arch, 8 mm mini-screws between the roots of the mandibular canines and first premolars, preadjusted edgewise brackets to align the teeth, Class III and asymmetric elastics to correct the canines, premolars, and molars relationship and midline deviation, reverse curve of the nickel-titanium wire combined with anterior vertical elastics to intrude molars and correct the anterior open-bite. In this case, without going through surgery, the posterior cross-bite was corrected, and ideal overjet and overbite relationships, midline coincidence and functional occlusion were all achieved. Satisfactory occlusal, functional, esthetic and stable results were obtained.展开更多
Objective： To evaluate the orthopedic effects of a new method to treat skeletal crossbite in the early mixed dentition. Methods ：Twenty cases （5.8-7. 5 years old ） with skeletal crossbite were treated by bonding t...Objective： To evaluate the orthopedic effects of a new method to treat skeletal crossbite in the early mixed dentition. Methods ：Twenty cases （5.8-7. 5 years old ） with skeletal crossbite were treated by bonding the bite plate combined with the face mask protracting the upper jaw. Cephalometric radiographs were taken and analyzed before and after treatments. Results： On average, in all 20 cases the maxilla was moved by 2.06 mm forwards the mandible was turned 2.45° downward and backwards the skeletal crossbites were corrected and the facial profiles were improved satisfactorily. The period of treatment was conducted for 1.7 months on average. Conclusion： A good effect can be achieved by bonding bite plate combined with the face mask protracting the upper jaw to treat skeletal crossbite in the early mixed dentition, which will benefit the craniofacial growth and the development of young children.展开更多
文摘BACKGROUND Correcting skeletal class III malocclusion with anterior crossbite in adolescents using only orthodontic treatment poses challenges.This report highlights a novel approach leveraging improved superelastic Ni-Ti alloy wire(ISW)to address these conditions effectively.CASE SUMMARY A 17-year-old male patient presented with the chief complaint of an underbite.The patient was given a diagnosis of skeletal class III malocclusion and anterior crossbite.The orthodontic treatment plan was implemented and did not require teeth extractions or orthognathic surgery.Key interventions involved the app-lication of ISW,intermaxillary elastics,and ISW unilateral multi-bend edgewise archwire.The unique combination of these techniques enabled the correction without the need for extractions or surgery.This approach leverages the advanced biomechanical properties of ISW,including its super-elasticity and shape memory,to enhance treatment efficacy.The treatment lasted 17 months,and major improvements in overjet,overbite,and alignment were achieved.The results were favorable,and stability was discovered during follow-up.CONCLUSION The application of ISW for treating skeletal class III malocclusion with anterior crossbite in a 17-year-old male patient resulted in exceptional outcomes.The treatment led to a marked improvement in the patient’s facial profile and to proper overjet,overbite,and midline alignment.These results were maintained over a one-year follow-up,indicating that a minimally invasive orthodontic approach can effectively address complex skeletal discrepancies in adolescent patients.This case illustrates that with the careful use of advanced orthodontic techniques,major skeletal challenges can be resolved without resorting to surgical procedures.
文摘Summary: Occlusal-maxillo-facial structural change of crossbite malocclusion after orthodontic therapy by modified ACTIVATOR appliance was investigated. Eighty crossbite cases of deciduous dentition and mixed dentition were treated by modified ACTIVATOR. Through pre- and post-treatment analysis of stone model, Schuller's position X-ray and craniofaciometrics, the change in craniofacial length, width and height in early-phase crossbite malocclusion was studied. The results showed that there was no significant change in the width of maxillary and mandibular dental arch. Maxillary length and protrusion was increased significantly, upper incisors slopped labially. The lower incisors slopped lingually, mental angle decreased more severely. The lower and posterior facial height was increased to normal level.
文摘Class III malocclusion associated with posterior crossbite, anterior open bite pattern with asymmetric occlusion in adults can be a challenging orthodontic problem, especially for the nonsurgical treatment. Skeletal Class III anteroposterior discrepancies in adult patients are generally managed either by surgical-orthodontic treatment or by orthodontic camouflage through dentoalveolar compensation. Although correction with surgery may be the most effective and stable way, many patients refuse surgical treatment plan because of the costs and traumas it may bring. This case report describes the successful use of TADs with expansion auxiliary wire to treat a 24-year-old man with skeletal class III malocclusion, posterior crossbite, anterior open-bite and asymmetric occlusion, mild upper and lower dental spacing and a chief manifestation of anterior crossbite. The patient refused surgery. A treatment plan was formulated consisting of using auxiliary expansion wire to expand the maxillary arch, 8 mm mini-screws between the roots of the mandibular canines and first premolars, preadjusted edgewise brackets to align the teeth, Class III and asymmetric elastics to correct the canines, premolars, and molars relationship and midline deviation, reverse curve of the nickel-titanium wire combined with anterior vertical elastics to intrude molars and correct the anterior open-bite. In this case, without going through surgery, the posterior cross-bite was corrected, and ideal overjet and overbite relationships, midline coincidence and functional occlusion were all achieved. Satisfactory occlusal, functional, esthetic and stable results were obtained.
文摘Objective： To evaluate the orthopedic effects of a new method to treat skeletal crossbite in the early mixed dentition. Methods ：Twenty cases （5.8-7. 5 years old ） with skeletal crossbite were treated by bonding the bite plate combined with the face mask protracting the upper jaw. Cephalometric radiographs were taken and analyzed before and after treatments. Results： On average, in all 20 cases the maxilla was moved by 2.06 mm forwards the mandible was turned 2.45° downward and backwards the skeletal crossbites were corrected and the facial profiles were improved satisfactorily. The period of treatment was conducted for 1.7 months on average. Conclusion： A good effect can be achieved by bonding bite plate combined with the face mask protracting the upper jaw to treat skeletal crossbite in the early mixed dentition, which will benefit the craniofacial growth and the development of young children.
