Incisal overjet and traumatic injuries to upper permanent incisors: A retrospective study
作者:
JärvinenSeppo,
期刊:
Acta Odontologica Scandinavica
(Taylor Available online 1978)
卷期:
Volume 36,
issue 5-6
页码: 359-362
ISSN:0001-6357
年代: 1978
DOI:10.3109/00016357809029088
出版商: Taylor&Francis
关键词: Orthodontics;dental occlusion;pedodontics
数据来源: Taylor
摘要:
Järvinen, S. Incisal ovejet and traumatic injuries to upper permanent incisors. A retrospective study.The relationships between traumatic injuries to upper incisors and incisal overjet were studied in a sample of 1445 orthodontically untreated children aged 7 to 16 years. Traumatic injuries of the hard dental tissues and exarticulations of teeth were recorded. The frequency of injuries was 14.2 7% in children with normal ovejet (0–3 mm), 28.4 % in children with increased ovejet (3.1–6 mm), and 38.6% in children with extreme ovejet (>6 mm). The severity of injuries was also greater in children with extreme ovejet than in children with overjet ranging from 0 to 6 mm. Furthermore, the range of injuries increased in relation to the overjet. Two or more injured incisors were found in 19.2% of the children with normal overjet, in 22.2% of the children with increased overjet, and in 46.7 % of those with extreme ovejet.Partly published in Finnish in Proc. Finn. dent. SOC. 73:Suppl. V, 1977.
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