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Objective: To investigate by behavioral methods the relationship between emotional stress and pain during experimental tooth movement in rats. Materials and Methods: Sixteen male Sprague-Dawley rats (210 to 250 g) were divided into two groups. The experimental group was treated with an active Ti-Ni appliance, and the control group received a passive appliance. A force of 20 gf was delivered by the active appliance between the maxillary first and second molars for 3 days. During this period the rat's behavior was evaluated eight times by means of open-field test and resistance-to-capture test. The specific parameters of animal activity were facial grooming, rearing, and locomotor activity, movement into the center of the open field, and response to capture. Results: Parameters related to stress and pain were higher in the group carrying active appliance, compared to the group with a passive appliance. Statistically significant differences in stress-related behavior between control and experimental groups were found 8 hours after placing the appliance and were most evident on the second day. Pain-related behavior was significantly greater in the experimental group than in the control group at 24 hours. Conclusions: The increase in emotional stress evoked by orthodontic tooth movement may precede the appearance of periodontal pain.
The Angle Orthodontist, 78(3), pp.487-494; 2008
収録刊行物
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- The Angle Orthodontist
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The Angle Orthodontist 78 (3), 487-494, 2008-05
E H Angle Orthodontists Research & Education Foundation, Inc.
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詳細情報 詳細情報について
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- CRID
- 1050850247228464640
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- NII論文ID
- 120006985641
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- NII書誌ID
- AA00525451
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- ISSN
- 00033219
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- HANDLE
- 10069/29902
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- IRDB
- CiNii Articles