Effect of osseous ankylosis in immature permanent teeth on jaw development (dynamics of periodontal membrane collagen fibers)

未成熟恒牙骨性强直对颌骨发育的影响(牙周膜胶原纤维动态)

基本信息

  • 批准号:
    15592176
  • 负责人:
  • 金额:
    $ 2.37万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
  • 财政年份:
    2003
  • 资助国家:
    日本
  • 起止时间:
    2003 至 2005
  • 项目状态:
    已结题

项目摘要

In order to elucidate the effect of osseous ankylosis of immature permanent teeth on tooth eruption, we conducted a replantation experiment on the right upper first and second incisors of 10 juvenile dogs. The experimental teeth were removed, and after detaching the periodontal ligament from the entire circumference, they were immersed in 2% acidulated phosphate sodium fluoride solution for 20 min. After removing the pulp, ankylosis was experimentally induced in the immature teeth by applying calcium hydroxide to the root canal and replanting the teeth, and the teeth were compared with the healthy opposite side.The clinical evaluation revealed infraversion and attrition of the experimental teeth, and they were more marked in the second incisor, whose root is immature, than in the first incisor. It was possible to rate the bony ankylosis on standardized X-ray films beginning 6 weeks after replantation. From 6 weeks after replantation onward the mobility of the experimental teeth was les … More s than that of the control teeth, and a metallic sound was confirmed by percussion.We confirmed the development of osseous ankylosis in all of the experimental teeth by histopathological evaluation, and the coursing of the periodontal ligament collagen fibers seen on the opposite side was absent. The osseous ankylosis was confirmed to consist of a type in which the root dentin is resorbed and which rapidly progresses, and a type in which ankylosis is observed but is not accompanied by rapid root resorption. The alveolar crest was lower in the experimental teeth than in the control teeth, and the alveolar bone in the vicinity of the necks of the experimental teeth on the labial side was more concave than on the control side. The septum interalveolare widened as a result of progression of the ankylosis, and the central trabecula had rarified. On the experimental side the fluorescence extraction region, which indicates bone formation, was wider than on the control side, and relative fluorescence intensity was higher. This change was more marked in the first 3 weeks after replantation, and the relative fluorescence intensity values were higher on the tooth neck side, but at 12 weeks after replantation a tendency to approach the control side was observed. The median palatine suture was interposed, and bony ankylosis of the experimental teeth seldom affected the opposite side.The above findings suggested that osseous ankylosis that occurs in the developmental period inhibits tooth eruption because of the lack of a periodontal ligament and that it inhibits development of the jaw in the labial and vertical direction. Less
为了阐明未成熟恒牙骨性强直对萌牙的影响,我们对10只幼犬右上第一、第二门牙进行了再植实验。取下实验牙,将牙周韧带与整个周长分离后,在2%酸化磷酸氟化钠溶液中浸泡20 min。拔髓后,在未成熟牙根管内应用氢氧化钙再植牙,实验诱发强直,并与健康对侧牙进行比较。临床评价显示实验牙内翻和磨蚀,且牙根未发育成熟的第二门牙内翻和磨蚀较第一门牙明显。在再植后6周开始的标准化x线片上可以对骨强直进行评分。从再植后6周开始,实验牙的活动性比对照牙低,且敲击声证实有金属声。我们通过组织病理学检查证实所有实验牙均发生骨强直,并且在对侧的牙周韧带胶原纤维缺失。骨性强直包括两种类型,一种是牙根质被吸收并迅速发展,另一种是观察到强直但不伴有快速的牙根吸收。实验牙的牙槽嵴比对照牙低,唇侧实验牙颈部附近的牙槽骨比对照牙凹。由于强直的进展,肺泡间隔变宽,中央小梁变稀。实验侧显示骨形成的荧光提取区比对照侧宽,相对荧光强度也更高。这种变化在再植后的前3周更为明显,牙颈侧的相对荧光强度值较高,但在再植后12周,观察到有向对照侧靠拢的趋势。中腭缝间置,实验牙骨强直很少影响对侧。以上结果提示,由于牙周韧带的缺失,发生在发育时期的骨性强直抑制了牙齿的萌牙,并抑制了下颌在唇向和垂直方向的发育。少

项目成果

期刊论文数量(40)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
白瀬 敏臣: "イヌの根未完成歯の再植が歯の萌出に及ぼす影響"第3回 日本外傷歯学会総会・学術大会プログラム・抄録集. 65 (2003)
Toshiomi Shirase:“狗不完全牙根再植对牙齿萌出的影响”第三届日本创伤牙科学会大会/学术会议议程/摘要集 65 (2003)。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Effect of bony ankylosis in immature permanent teeth on tooth eruption
未成熟恒牙骨性强直对牙萌出的影响
白瀬 敏臣: "再植歯の歯槽窩壁損傷がその再植歯と歯周組織との治癒におよぼす影響(第2報 画像解析所見と病理組織所見との比較)"小児歯科学雑誌. 41・2. 373 (2003)
Toshiomi Shirase:“再植牙牙槽窝壁损伤对再植牙和牙周组织愈合的影响(第二次报告:图像分析结果与组织病理学结果的比较)”《儿科牙科杂志》41。2。 373 (2003)
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
イヌ根未完成永久切歯における自家移植の機能的組織回復に関する研究 -移植歯歯根表面性状の違いによる影響-
犬未完成恒切牙自体移植功能组织恢复的研究 - 移植牙根面特性差异的影响 -
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    黒田暁洋;白瀬敏臣;荻原和彦
  • 通讯作者:
    荻原和彦
上顎側切歯部の埋状叢生歯を再植した1例
上颌侧切牙区埋藏拥挤牙再植一例
  • DOI:
  • 发表时间:
    2004
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Kuroda;Akihiro;白瀬 敏臣;白瀬 敏臣;小方 清和
  • 通讯作者:
    小方 清和
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SHIRASE Toshiomi其他文献

Relationship between oral hygiene habits and salivary fluoride concentrations in infants.
婴儿口腔卫生习惯与唾液氟化物浓度的关系。
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    0
  • 作者:
    UCHIKAWA Yoshimori;IWASAKI Terumi;SHIRASE Toshiomi;TAMURA Fumiyo
  • 通讯作者:
    TAMURA Fumiyo

SHIRASE Toshiomi的其他文献

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相似海外基金

REGENERATION OF PULP-DENTIN DEVELOPMENT IN IMMATURE PERMANENT TEETH WITH NECROSIS
坏死的未成熟恒牙牙髓牙本质发育的再生
  • 批准号:
    7876114
  • 财政年份:
    2010
  • 资助金额:
    $ 2.37万
  • 项目类别:
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