上颌单颌拨牙矫治安氏Ⅱ类1分类错He

目的 探讨上颌单颌拨牙矫治安氏Ⅱ类１分类错Ｈｅ的疗效、适应证和临床意义。方法 对１４例安氏Ⅱ类１分类错Ｈｅ患者采用上颌单颌拔牙模式进行矫治,将矫治前后的Ｘ线头影测量数据进行对比。结果 ①１－ＦＨ角减少１１．０３＾。,＾－１－ＭＰ角增加３．０７＾。;②下颌综合长度增加３．３０ｍｍ;③上、下唇突度分别减小２．６５ｍｍ和１．６４ｍｍ。上述测量项目矫治前、后的均值之间,差异具有显著性（Ｐ〈０．０５～０．０     

The treatment of severe 'gummy' Class II division 1 malocclusion using the maxillary intrusion splint.

This paper describes a modified Maxillary Intrusion Splint (M.I.S.) system which incorporates a near vertical pull headgear, and its use in the management of severe 'gummy' Class II division 1 malocclusion. The appliance was designed to reduce the visibility and vulnerability of the maxillary incisors in this difficult clinical situation by achieving the intrusion of maxillary teeth, restraining maxillary growth, and encouraging an element of subsequent forward mandibular rotation. The authors' initial experience using this system is presented in a retrospective cephalometric analysis of the lateral skull films of 26 treated patients contrasted with a similar number of comparable controls. The results showed that the principal effects of the M.I.S. were on the maxillary teeth giving decisive overjet control and incisor retraction with actual maxillary incisor intrusion. There was a similar effect on the maxillary molar and the M.I.S. provided effective en masse vertical control of the maxillary dentition. There was some degree of maxillary restraint in the M.I.S. group, but no noticeable difference in the change of mandibular position between the groups at the end of treatment. The possible reasons for this are discussed and suggestions made to improve this aspect of treatment in these patients.     

方丝弓技术矫治安氏Ⅱ类1分类错He

OBJECTIVE: To treat class II division 1 extraction cases by means of Edgewise technique. METHODS: 27 skeletal class II division 1 malocclusion patients were extracted 2 upper first premolars and 2 lower second premolars, and treated by Edgewise principles and sequential force system. They aged from 11 to 20. The duration of orthodontic treatment was 25.5 months on average(22-28 months). RESULTS: The patients' profile was much improved; Molar relation changed from class II to class I relationship; Anterior overjet and overbite are normal; Good occlusal intercuspation is also achieved. The ANB angle was significantly changed from 5.6 degrees +/- 2.2 degrees to 3.2 degrees +/- 1.4 degrees; Z angle was altered from 60.8 degrees +/- 5.8 degrees to 76.4 degrees +/- 6.6 degrees; Distance of AO-BO was reduced from 6.8 +/- 2.4 mm to 3.2 +/- 1.1 mm. CONCLUSIONS: Edgewise technique is an effective method for treatment of class II division 1 extraction cases.     

Treatment of a class II division 1 malocclusion with macrodontia of the maxillary central incisors

Am J Orthod Dentofacial Orthop 2001;119:654-9     

Treatment of a Class II division 1 anterior open bite malocclusion.

A case report of an 11-year-old Caucasian female who presented with a Class II div I anterior open bite malocclusion. Overjet is 6 mm and the anterior open bite 2 mm. There was a history of digit sucking till she was eight years old. She was successfully treated by non-extraction with pre-adjusted Edgewise appliances and high-pull headgear for a period of 27 months.     

Treatment of Class II malocclusions with removable appliances. Part 2. Class II division 1 treatment

It is possible, with careful case selection, to achieve good orthodontic results using removable appliances, provided that they are well designed and properly adjusted. The best way to measure progress is to divide the treatment plan into stages, with each stage having recognisable objectives that must be achieved before moving on to the next stage.     

Bionator treatment in Class II, division 1

Twenty cases treated with a Bionator followed by fixed appliance therapy are compared to an untreated sample and a group treated with fixed appliances only. The most notable differences in Bionator effects are increased vertical dimension and mandibular plane angle. The first appliance used, whether Bionator or fixed, produced similar changes.     

Treatment of a Class II, Division 1, malocclusion with the extraction of maxillary canines and mandibular first premolars.

This is the case report of a patient whose healthy but malformed maxillary canines and normal mandibular first premolars were extracted in order to correct a Class II, Division 1, malocclusion. Maxillary premolars were substituted for the extracted canines.     

35例安氏Ⅱ类1分类错双期矫正的临床分析

目的:探讨双期矫正在治疗安氏Ⅱ类1分类错畸形中的临床效果。方法:对35例安氏Ⅱ类1分类错患者进行双期矫正(Twin-block功能性矫治器+固定矫正),应用SPSS11.0软件包对治疗前后的X线头影测量数据进行配对t检验。结果:双期治疗结束后,患者后牙咬合,前牙覆、覆盖及侧貌均有明显改善,下颌生长朝着有利的方向发生改变。∠ANB、U1/SN、OB、OJ、UL-E、ULP在治疗后减少,差异具有统计学意义(P<0.01)。∠SNB、Co-Go、Go-Gn、Co-Gn在治疗后增加,差异具有统计学意义(P<0.01),L1-MP、FH-MP均显著增加(P<0.05)。结论:Twin-block矫治器对于安氏Ⅱ类1分类错患者具有矫治作用,通过诱导下颌功能性前移,抑制上颌骨生长,促进下颌骨生长,协调上、下颌骨关系,改善面型。     

Treatment of adult Class II division 2 patient with metal hypersensitivity

This case report describes the orthodontic treatment of an adult female with an Angle Class II division 2 malocclusion with a severe deep bite and a congenitally missing lower incisor. The use of available orthodontic devices and materials was limited because the patient had metal allergies. Following a careful examination and case analysis, the preadjusted edgewise appliances and the microscrew implants were placed after the upper first premolars were extracted. After active treatment, a good facial profile and occlusion were achieved. These results have been maintained for 2 years following completion of the active treatment.     

Correction of a mandibular alveolar protrusion using maxillary miniscrew anchorage in the treatment of a Class II division 1 malocclusion

This article describes a relatively simple method of reducing a mandibular alveolar protrusion without compensatory extraction of mandibular bicuspids or advancement of anterior teeth in the treatment of a Class II division 1 malocclusion. The use of well-planned skeletal anchorage specifically adapted to each specific situation is also well elucidated.     

Contemporary treatment of a crowded Class II division 1 case

A 12-year-old Caucasian male presented with a severe Class II division 1 incisor relationship on a mild Skeletal II base with an average maxillary-mandibular planes angle and average lower facial height. Crowding was severe in the upper arch and moderate in the lower arch. Treatment was commenced using Twin Block appliances, and followed by extractions in all four quadrants and fixed appliances. This case illustrates the versatility of the Twin Block appliance in the treatment of those cases exhibiting crowding.     

Orthodontic treatment of a Class II division 1 malocclusion exhibiting significant maxillary arch length deficiency: a case report.

The orthodontic correction of a Class II Division I malocclusion with significant maxillary arch length deficiency and a blocked-out maxillary cuspid is reported. The case was successfully completed on a non-extraction basis using extraoral cervical headgear anchorage and compressed coil springs to gain necessary maxillary arch length. No intermaxillary elastics or functional appliances were used. Favorable patient cooperation and facial growth were instrumental in achieving good results.