Abstract：
:Premature and low birth weight infants often require neonatal oral intubation for resuscitation and to relieve respiratory distress. The endotracheal tube exerts pressure on the developing palate, which can result in palatal groove formation, a high-arched palate, and palatal asymmetry. The purpose of this investigation was to determine whether such intubation can have a long-term effect on palatal form and symmetry. Arch widths, palatal widths, and palatal depths were measured from the study casts of 43, 8-11-year-old previously intubated premature and low birth weight children using a reflex microscope, with a fixed rectangular Cartesian co-ordinate system, and compared with a group of non-intubated gender- and age-matched controls. Significant differences were found between the intubated and non-intubated children. The intubated children had significantly narrower palatal widths posteriorly (P < or = 0.001), steeper palatal vaults anteriorly (P < or = 0.01), and exhibited a directional palatal width asymmetry with the left side of the palate measuring consistently wider than the right. These differences did not, however, appear to be affected by the length of intubation. Therefore, it is concluded that an oral endotracheal tube might exert excess force on the developing alveolus anteriorly with the tube being displaced to the right of the palate posteriorly leading to a steep anterior palatal vault and a left-sided palatal asymmetry, which can persist until the age of 11 years of age.
journal_name
Eur J Orthodjournal_title
European journal of orthodonticsauthors
Macey-Dare LV,Moles DR,Evans RD,Nixon Fdoi
10.1093/ejo/21.6.703keywords:
subject
Has Abstractpub_date
1999-12-01 00:00:00pages
703-10issue
6eissn
0141-5387issn
1460-2210journal_volume
21pub_type
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journal_title：European journal of orthodontics
pub_type： 临床试验,杂志文章,随机对照试验
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abstract：:Orthodontic torque expression is the result of axial rotation of rectangular archwires within a rectangular bracket slot. This study investigates the effect of bracket material on torque expression. Torque exerted by a rotating archwire on each bracket will be measured as well as the relative deformation of each brack...
journal_title：European journal of orthodontics
pub_type： 杂志文章
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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
doi：10.1093/ejo/18.4.385
更新日期：1996-08-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.3.203
更新日期：1994-06-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq089
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更新日期：2013-04-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/16.2.130
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journal_title：European journal of orthodontics
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更新日期：2020-06-23 00:00:00
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journal_title：European journal of orthodontics
pub_type： 临床试验,杂志文章,随机对照试验
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更新日期：2001-04-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：2013-08-01 00:00:00
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pub_type： 杂志文章
doi：10.1093/ejo/16.5.371
更新日期：1994-10-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：2003-08-01 00:00:00
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更新日期：2007-12-01 00:00:00
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journal_title：European journal of orthodontics
pub_type： 杂志文章
doi：10.1093/ejo/cjq028
更新日期：2011-02-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：1998-08-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：2006-12-01 00:00:00
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pub_type： 杂志文章,随机对照试验
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pub_type： 杂志文章,多中心研究
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更新日期：2018-04-06 00:00:00
abstract：:In order to apply high, short-term forces during rapid maxillary expansion (RME) to the sutures of the maxilla with minimum loss of force and without causing unwanted side-effects (dentoalveolar tipping, etc.), the appliance should be as rigid as possible. The retention arms of the RME screws, representing a particula...
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更新日期：2011-06-01 00:00:00
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journal_title：European journal of orthodontics
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更新日期：2008-08-01 00:00:00
