Collagenolytic Activity during Root Resorption of Bovine Deciduous Tooth
نویسندگان
چکیده
منابع مشابه
Collagenolytic activity of periodontal ligament during human deciduous root resorption.
Human periodontal ligament from resorbing deciduous teeth demonstrated collagenolytic activity when incubated on collagen gels. This activity was directly proportional to the size of the explant and length of time of incubation. No activity was observed in ligaments obtained from completely formed premolar teeth.
متن کامل[Studies on the solubilization of tooth mineral during root resorption of bovine deciduous tooth].
要 旨:乳 歯 の歯根吸収 の機序 につ いて知 るために,特 に歯質 の無機成 分の溶解 について検 討 を行 な った。 実験 には仔牛 の下顎 を用 い,歯 根 吸収 の進行 している乳歯 を抜去 してその 吸収組織 を採取 する とともに, 研究対照 と して骨 中よ り永久歯歯胚 を摘出 して,エ ナメル器 と歯乳頭 に分離 して実験 に供 した。 まず,吸 収組織 のin vitroに おけ る歯質溶解能の有無につい て確認す るために,牛 の永久歯切歯 の研磨片 の上 に吸収組織 を載せ て培養 した後,走 査型電顕 でそ の表面 を観察 した。 この結果,吸 収組織 は象牙質 のみ な らずエナ メル質 にお いても著明 な吸収窩 を形成 し,明 らかに歯質 を溶解す るこ とを認 めた。 次に,吸 収組織 と歯胚 の各組織 について,酸 素消 費量 と乳酸 生成量 ...
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OBJECTIVES To assess the relationship between periodontal parameters and cervical root resorption in orthodontically moved teeth. MATERIAL AND METHODS In a standardized experimental tooth movement in 16 periodontally healthy subjects, 29 pre-molars were tipped buccally for 8 weeks. Eighteen contralateral pre-molars not subjected to orthodontic movement served as controls. Plaque Index (PI), G...
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متن کاملInternal inflammatory root resorption: the unknown resorption of the tooth
Internal inflammatory root resorption is a relatively rare resorption that begins in the root canal and destroys surrounding dental hard tissues. Odontoclastic multinuclear cells are responsible for the resorption, which can grow to perforate the root if untreated. The initiating factor in internal root resorption is thought to be trauma or chronic pulpal inflammation, but other etiological fac...
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ژورنال
عنوان ژورنال: THE JOURNAL OF THE STOMATOLOGICAL SOCIETY,JAPAN
سال: 1969
ISSN: 1884-5185,0300-9149
DOI: 10.5357/koubyou.36.100