Marcusson A, Norevall L I, Persson M
Department of Orthodontics, Public Dental Health Service, Linköping, Sweden.
Eur J Orthod. 1997 Jun;19(3):233-42. doi: 10.1093/ejo/19.3.233.
The aim of this clinical study was to test the benefit from using glass ionomer cement (GIC) instead of a conventional diacrylate in bracket bonding for the prevention of white spot formation. Before treatment 7.2 per cent of all examined surfaces (n = 222) were classified as having white spots. No additional fluoride treatment other than fluoride toothpaste was prescribed. At debonding 8-39 months later, white spots were found in 24 per cent of the surfaces bonded with the cement, significantly lower than the 40.5 per cent bonded with the diacrylate (P < 0.01). At recall 12 months after debonding (examined surfaces n = 214) the frequency of surfaces with white spots was reduced to 22 and 24 per cent respectively. Re-examination after a further 12 months (n = 160) showed that white spot surfaces were less frequent with the cement (16 per cent compared with the diacrylate 29 per cent), but still significantly more frequent in both groups than before treatment. With longer treatment time (17 months) teeth bonded with diacrylate were more frequently affected with white spots (P < 0.05). Neither sex nor age affected the results. It is concluded that the use of a GIC for orthodontic bonding will result in a significant reduction in the number of white spot surfaces at debonding compared with the use of conventional diacrylate. Although markedly reduced in both groups, the number of affected surfaces was still higher 2 years after debonding than before treatment.
这项临床研究的目的是测试在托槽粘结中使用玻璃离子水门汀（GIC）而非传统双丙烯酸酯来预防白斑形成的益处。治疗前，所有检查表面（n = 222）中有7.2%被分类为有白斑。除了含氟牙膏外，未开其他额外的氟化物治疗。在8 - 39个月后的去粘结时，发现用该水门汀粘结的表面中有24%出现白斑，显著低于用双丙烯酸酯粘结的40.5%（P < 0.01）。在去粘结后12个月的回访中（检查表面n = 214），有白斑表面的频率分别降至22%和24%。再过12个月重新检查（n = 160）显示，水门汀组有白斑的表面频率更低（16%，而双丙烯酸酯组为29%），但两组中白斑表面仍比治疗前显著更频繁。治疗时间更长（17个月）时，用双丙烯酸酯粘结的牙齿出现白斑的频率更高（P < 0.05）。性别和年龄均未影响结果。得出的结论是，与使用传统双丙烯酸酯相比，在正畸粘结中使用GIC将导致去粘结时白斑表面数量显著减少。尽管两组中受影响表面数量均明显减少，但去粘结后2年时仍高于治疗前。
