Dimberg Lillemor, Lennartsson Bertil, Arnrup Kristina, Bondemark Lars
a Consultant Orthodontist, Research Fellow, Department of Orthodontics, Postgraduate Dental Education Center, Örebro County Council, Örebro, Sweden.
b Associate Professor, Postgraduate Dental Education Center, Örebro County Council and School of Health and Medical Sciences, Örebro University, Örebro, Sweden.
Angle Orthod. 2015 Sep;85(5):728-34. doi: 10.2319/080414-542.1. Epub 2015 Apr 13.
To follow a group of children from primary to early permanent dentition and determine the prevalence, self-correction, and new development of malocclusions; the need for orthodontic treatment; and the possible influences of habits, breathing disturbances, and allergies.
Two hundred and seventy-seven children were followed at 3, 7, and 11.5 years of age. Malocclusions and orthodontic treatment need were determined by clinical examinations. Data on sucking habits, breathing disturbances, allergies, dental trauma, and orthodontic treatments were collected from a questionnaire and dental records.
Malocclusions were found in 71% of participants at 3 years of age, 56% at 7 years of age, and 71% at 11.5 years of age. Self-correction was noted for anterior open bite, sagittal malocclusions, and posterior crossbite, while deep bite developed. A high number of contact point displacements and spacings contributed to the prevalence of malocclusion rate of 71% at 11.5 years. Severe or extreme orthodontic treatment need was apparent in 22%. Habits, allergies, or breathing disturbances found at 3 years of age had no associations with malocclusions at 11.5 years of age.
This sample revealed a significant percentage of malocclusions and orthodontic treatment need. A substantial number of self-corrections and establishment of new malocclusions occurred during the transition from primary to early permanent dentition.
对一组儿童从乳牙期追踪至恒牙早期，确定错牙合畸形的患病率、自我纠正情况及新出现情况；正畸治疗的需求；以及习惯、呼吸障碍和过敏可能产生的影响。
对277名儿童在3岁、7岁和11.5岁时进行追踪。通过临床检查确定错牙合畸形和正畸治疗需求。从问卷和牙科记录中收集有关吮指习惯、呼吸障碍、过敏、牙外伤和正畸治疗的数据。
3岁时71%的参与者存在错牙合畸形，7岁时为56%，11.5岁时为71%。前牙开牙合、矢状错牙合和后牙反牙合出现自我纠正，而深覆牙合则有所发展。大量的接触点移位和间隙导致11.5岁时错牙合畸形患病率达到71%。22%的儿童明显需要进行严重或极端的正畸治疗。3岁时发现的习惯、过敏或呼吸障碍与11.5岁时的错牙合畸形无关。
该样本显示错牙合畸形和正畸治疗需求的比例较高。从乳牙期到恒牙早期过渡期间，出现了大量的自我纠正以及新的错牙合畸形。
