Abstract：
:In 138 successfully treated Class II division 1 patients (40 Activator and 98 Herbst) effective temporomandibular joint (TMJ) growth changes (a summation of condylar remodelling, glenoid fossa remodelling, and condylar position changes within the fossa), and their influence on the position of the chin and the rotation of the mandible were analysed retrospectively. Lateral head films in habitual occlusion from before and after an average treatment period of 2.6 years for the Activator patients and 0.6 years for the Herbst patients were evaluated. Two different treatment changes were assessed: (1) overall growth changes and (2) treatment effects (overall growth changes minus age-related normal growth values: Bolton Standards). The comparison between the Activator and the Herbst group revealed larger effective TMJ and chin changes during Activator therapy due to the longer observation period (2.6 years versus 0.6 years). The treatment effects showed marked group differences for both the amount and direction of effective TMJ changes. The changes were vertical and slightly anterior in the Activator group, and predominantly posterior in the Herbst group. Concerning the chin changes, the treatment effects for the Herbst group exceeded those for the Activator group in both directions, caudally and anteriorly. The Activator group showed an anterior rotation and the Herbst group a slight posterior rotation of the mandible. The present investigation revealed that the effective TMJ and chin changes were increased by both Activator and Herbst treatment. However, the Herbst appliance renders more favourable sagittally orientated treatment effects in a much shorter period of time compared with the Activator.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Baltromejus S,Ruf S,Pancherz Hdoi
10.1093/ejo/24.6.627keywords:
subject
Has Abstractpub_date
2002-12-01 00:00:00pages
627-37issue
6eissn
0141-5387issn
1460-2210journal_volume
24pub_type
杂志文章abstract：:In 69 individuals from a randomized epidemiological material comprising 450 adults, an intra-individual comparison of the periodontal condition of 73 mesially tipped molars (30 degrees or more to a line perpendicular to the occlusal plane) and contralateral upright molars was made. The alveolar bone level mesially and...
journal_title：European journal of orthodontics
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更新日期：1992-12-01 00:00:00
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journal_title：European journal of orthodontics
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journal_title：European journal of orthodontics
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/17.5.375
更新日期：1995-10-01 00:00:00
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journal_title：European journal of orthodontics
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journal_title：European journal of orthodontics
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journal_title：European journal of orthodontics
pub_type： 杂志文章,评审
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更新日期：2015-02-01 00:00:00
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pub_type： 评论,杂志文章
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更新日期：2017-06-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
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更新日期：2020-01-27 00:00:00
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更新日期：2000-08-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章,随机对照试验
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更新日期：2018-09-28 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjw008
更新日期：2017-02-01 00:00:00
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更新日期：1994-10-01 00:00:00
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pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：1996-02-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：2002-10-01 00:00:00
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更新日期：1999-12-01 00:00:00
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更新日期：2018-11-30 00:00:00
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更新日期：1999-02-01 00:00:00
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pub_type： 杂志文章
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更新日期：2013-10-01 00:00:00
