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儿童错牙合]畸形的早期矫治是指预防、诱导和阻断错牙合]畸形的发生、发展，达到儿童颅面牙合]功能与美观的协调与平衡。儿童错牙合]畸形早期矫治概念提倡的是早期和及时，并且贯穿于乳牙列期、混合牙列早期和晚期、恒牙列期等各个颅面牙合]的发育时期。儿童错牙合]畸形的早期矫治遵循早期和阶段性的原则，通过预防错牙合]]的发生、辅助治疗与错牙合]畸形形成有关的口腔疾病及牙外伤、纠正口腔不良习惯、诱导牙萌出建牙合]、治疗牙发育不良造成的咬合紊乱、阻断能造成功能和健康损害的咬合障碍、矫正面颌发育不调的骨性畸形，以达到颅面牙合]的美观及功能完美协调发展和儿童心理的健康发育。儿童错牙合]畸形的早期矫治应用活动矫治、功能矫治及固定矫治等技术，选择最佳的治疗时机矫正错牙合]，以达到临床阻断和预防的最大治疗效果，并简化错牙合]的矫治，最终减轻患儿的治疗负担。儿童错牙合]畸形的早期矫治是儿童口腔医学和口腔正畸学的重要内容，是现代儿童口腔医学和口腔正畸学发展的潮流和方向。

The necessity and methods of early orthodontic interven-tion of preadolescent malocclusions

Early orthodontic intervention is to prevent, guide,and treat occlusal and maxillofacial problems in prima-ry,mixed and permanent dentitions immediately in the earli-est available time. Early orthodontic interventions indicate all sorts of oral therapies through the construction of the occlu-sions,like oral therapy of dental diseases,the corrections of oral habits, the occlusal guidance treatments, orthodontic treatments and dental facial orthopedic treatments. The den-tist should use all kinds of methods,including preventive treatments,adjunctive orthodontic treatments and intercep-tive orthodontic treatments,to create a healthy oral environ-ment in order to achieve the good maxillofacial development and occlusal construction. Early orthodontic intervention is an important part of the modern pediatric dentistry and orthodon-tics. It is also the trend and direction of developing pediatric stomatology and orthodontics.