| Project/Area Number |
15K20614
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Orthodontics/Pediatric dentistry
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| Research Institution | Aichi Gakuin University |
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Principal Investigator |
Shibata Momoko 愛知学院大学, 歯学部, 非常勤講師 (50600178)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 上顎洞形態 / 歯科矯正用アンカースクリュー / 圧下 / 歯の移動 / セルフライゲーションブラケット / 歯科矯正学 / 遠心移動 |
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| Outline of Final Research Achievements |
This study aimed to enable safe OAS placement and control effective molar intrusion and distalization. I investigated the risk of maxillary sinus perforation and damage to adjacent tooth root during OAS placement by examining the shape and downward of the maxillary sinus (non-downward maxillary sinus, funnel-like downward, and ria-like downward groups) in the alveolar bone region between the maxillary 2nd premolar and 1st molar. The results of this study , the buccolingual bone thickness was significantly lower in the ria-like downward group compared to those of the other two groups, which is a risk factor for perforation toward the maxillary sinus. On the contrary, in the funnel-like downward and non-downward maxillary sinus groups, the inter-radicular space between the 2nd premolar and 1st molar of the maxilla was significantly smaller compared to that of the ria-like downward group, showing the risk of damage to tooth root if its distance to the alveolar crest is short.
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