کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
3119044 | 1582794 | 2007 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Relationship between cortical bone formation on mandibular condyles and alternation of the magnetic resonance signals characteristic of growth
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موضوعات مرتبط
علوم پزشکی و سلامت
پزشکی و دندانپزشکی
دندانپزشکی، جراحی دهان و پزشکی
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![عکس صفحه اول مقاله: Relationship between cortical bone formation on mandibular condyles and alternation of the magnetic resonance signals characteristic of growth Relationship between cortical bone formation on mandibular condyles and alternation of the magnetic resonance signals characteristic of growth](/preview/png/3119044.png)
چکیده انگلیسی
Introduction: The purpose of this study was to elucidate the significance of double contour-like structures (DCLS) relative to the maturity of mandibular condyles and the possible constituents of DCLS. We evaluated the relationship between the alternation of DCLS and the ossification on the top of mandibular condyles. Methods: In 36 subjects, aged 9 to14 years at the first examination, magnetic resonance imaging characteristics of the mandibular condyles were obtained from fast spin echo intermediate-weighted images and T2-weighted images; 2 or 3 years later, magnetic resonance images were again obtained from 23 of the same 36 subjects. Results: A significant relationship was found between the absence of DCLS and the continuity of void-signal lines on the tops of the mandibular condyles. DCLS disappeared, and the void-signal lines on the tops of the mandibular condyles became continuous as the children grew. The top of DCLS was seen as a hypersignal on T2-weighted images. Conclusions: Alternations of DCLS might be a useful criterion for evaluating the maturity of mandibular condyles in children. Possible constituents of DCLS might be hypervascular loose fibrous tissue and a proliferation of cartilage accompanied by active ossification on the tops of the mandibular condyles.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: American Journal of Orthodontics and Dentofacial Orthopedics - Volume 131, Issue 4, April 2007, Pages 473-480
Journal: American Journal of Orthodontics and Dentofacial Orthopedics - Volume 131, Issue 4, April 2007, Pages 473-480
نویسندگان
Yasuhiro Morimoto, Tetsuro Konoo, Kazuhiro Tominaga, Tatsurou Tanaka, Kazunori Yamaguchi, Jin-ichi Fukuda, Takeshi Ohba,