在模拟的口腔条件下,正统牙弹性链的强力衰变行为
Gurmeet K Virdi1, Anil Prashar1, Gurpreet Kaur1
1Orthodontics and Dentofacial Orthopedics, Desh Bhagat Dental College and Hospital, Mandi Gobindgarh, IND.
Cureus
|October 23, 2024
概括
在模拟的口腔条件下,正牙弹性质链在模拟口腔条件下经历了显著的力衰减,塑料链表现最多,第二代电源链最少的降解. 建议每14天更换一次链条,以获得最佳的切口收缩力.
科学领域:
- 矯正牙科 矯正牙科是一種矯正牙科.
- 生物材料科学 生物材料科学
- 牙科材料 牙科材料
背景情况:
- 弹性质链对于正牙牙的移动至关重要,特别是切口 retraction 和空间关闭.
- 它们的有效性受到随着时间的推移而受到力衰减的限制,受唾液和化物冲洗等口腔环境因素的影响.
- 由于这种降解,精确的力传输到牙是具有挑战性的.
研究的目的:
- 为了评估28天内四个商业正牙弹性质链的强度降解.
- 在模拟的口腔条件下比较它们的性能,包括牙移动和化物预防.
- 为了确定模拟口腔条件对弹性链力衰变的影响.
主要方法:
- 测试了80个弹性质链样品 (AlastiK,第二代电源链,弹性链,塑料链各20个).
- 链条在模拟空间关闭的烯酸上被拉长到25毫米.
- 样品被分为对照组 (人工唾液) 和试验组 (唾液,模拟牙运动,化物冲洗).
- 使用数字力表在28天内多个时间点测量了力衰变.
主要成果:
- 所有链都在第一天内表现出最大的力降解,随后在28天内持续下降 (p<0.05).
- 在对照组的材料中没有发现强力衰变的显著差异 (p>0.05).
- 在测试组中,塑料链表现出最大的衰变 (67.9%),而第二代电源链表现出最小的衰变 (51.9%).
结论:
- 与第二代电源链 (Ormco) 和弹性链 (Morelli) 相比,塑料链 (美国正牙) 和AlastiK (3M) 显示出更高的力衰变.
- 模拟的口腔条件显著影响了所有测试的弹性链的强度衰变.
- 建议定期更换弹性质链条,最好是每14天更换一次,以保持切口收缩期间的最佳正牙力.
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