Biomechanical properties of human primary enamel derived the fracture toughness -comparative study of permanent enamel-
| Project/Area Number |
22592279
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Orthodontic/Pediatric dentistry
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| Research Institution | Niigata University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAKAMOTO Makoto 新潟大学, 医歯学系, 教授 (80215657)
SAKAI Jun 新潟工業短期大学, 自動車工業科, 講師 (70425370)
早崎 治明 新潟大学, 医歯学系, 教授 (60238095)
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| Co-Investigator(Renkei-kenkyūsha) |
HAYASAKI Haruaki 新潟大学, 医歯学系, 教授 (60238095)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 歯学 / 物性実験 / バイオメカニクス / 破壊力学 |
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| Research Abstract |
The purpose of the present study was to examine the fracture toughness and Vickers microhardness number of permanent and primary human enamel using the indentation microfracture method. Crack resistance and a parameter indirectly related to fracture toughness were measured in 48 enamel specimens from 16 permanent teeth and 12 enamel specimens obtained from six primary teeth.
The Vickers microhardness number of the middle portion was greater than the upper portion in primary enamel. The fracture toughness was highest in the middle portion of permanent enamel, because fracture toughness greatly depends upon microstructure. These findings suggest that primary teeth are not miniature permanent teeth but have specific and characteristic mechanical properties.
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Report
(5 results)
Research Products
(44 results)
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[Journal Article] 日本小児歯科学会に属する女性小児歯科医への本音トークアンケート調査2012
Author(s)
馬場篤子,渥美信子,林-坂井幸子,平野慶子,人見さよ子,小田訓子,下村-黒木淳子,仲野道代,朝田芳信,井上美津子,齊藤秀子,森榮,吉田昊哲,髙野博子
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Journal Title
小児歯科学雑誌
Volume: 50(5)
Pages: 383-392
Related Report
Peer Reviewed
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[Presentation] 日本小児歯科学会北日本地方会に所属する女性小児歯科医の本音トークアンケート結果―女性の私生活と仕事に関する調査―2011
Author(s)
齋藤珠実,駿河由利子,浅川麻美,青山有子,加川千鶴世,林-坂井幸子,佐野富子,庄内喜久子,土岐志麻,福井亜実,芳野素子,下村-黒木淳子
Organizer
第29回日本小児歯科学会北日本地方会
Place of Presentation
札幌
Year and Date
2011-10-29
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