Antonova I N, Goncharov V D, Bobrova E A
First Saint-Petersburg State Medical University named after I.P. Pavlov, Saint-Petersburg, Russia.
Saint-Petersburg State Electrotechnical University LETI named after V.I. Ulianov, Saint-Petersburg, Russia.
Stomatologiia (Mosk). 2017;96(3):5-10. doi: 10.17116/stomat20179635-10.
The aim of the study was to evaluate ultrastructural changes of dental enamel after fixation of orthodontic appliances, initial influence of orthodontic forces and removal of braces. Five intact permanent tooth extracted for orthodontic reasons were included in the experimental study. Scanning probe microscopy was conducted in 4 random enamel points in each tooth (20 points overall) in semi-contact mode with standard 10 nm probes. The study showed ultrastructural enamel changes such as nanofractures up to 1 mm along the braces locks. The changes correlated with surface morphological features and teeth anatomy and may play an important role in dental decay and non-carious lesions occurring in the course of orthodontic treatment.
本研究的目的是评估正畸矫治器固定后牙釉质的超微结构变化、正畸力的初始影响以及矫治器去除后的情况。因正畸原因拔除的五颗完整恒牙被纳入实验研究。使用标准的10纳米探针，以半接触模式在每颗牙齿的4个随机釉质点（共20个点）进行扫描探针显微镜检查。研究显示牙釉质存在超微结构变化，例如沿矫治器锁扣处有长达1毫米的纳米级裂缝。这些变化与表面形态特征和牙齿解剖结构相关，可能在正畸治疗过程中发生的龋齿和非龋性病变中起重要作用。
