Manni Antonio, Pasini Marco, Mazzotta Laura, Mutinelli Sabrina, Nuzzo Claudio, Grassi Felice Roberto, Cozzani Mauro
Private Practice Lecce, Via Giacobina, 6 Racale, 73055 Lecce, Italy.
Private Practice Massa, Viale Roma 213, 54100 Massa, Italy.
Int J Dent. 2014;2014:173187. doi: 10.1155/2014/173187. Epub 2014 May 19.
Aim. The aim of this study is to compare dental and skeletal effects produced by an acrylic splint Herbst with and without skeletal anchorage for correction of dental class II malocclusion. Methods. The test group was formed by 14 patients that were treated with an acrylic splint miniscrew-Herbst; miniscrews were placed between mandibular second premolars and first molars; controls also consisted of 14 subjects that were treated with an acrylic splint Herbst and no miniscrews. Cephalometric measurements before and after Herbst treatment were compared. The value of α for significance was set at 0.05. Results. All subjects from both groups were successfully treated to a bilateral Class I relationship; mean treatment time was 8,1 months in the test group and 7.8 in the controls. Several variables did not have a statistical significant difference between the two groups. Some of the variables, instead, presented a significant difference such as incisor flaring, mandibular bone base position, and skeletal discrepancy. Conclusions. This study showed that the Herbst appliance associated to miniscrews allowed a better control of the incisor flaring with a greater mandibular skeletal effect.
目的。本研究旨在比较使用和不使用骨锚固的丙烯酸夹板Herbst矫治器对Ⅱ类错牙合畸形进行矫治时产生的牙齿和骨骼效应。方法。试验组由14例使用丙烯酸夹板微型螺钉-Herbst矫治器治疗的患者组成；微型螺钉置于下颌第二前磨牙和第一磨牙之间；对照组也由14例使用丙烯酸夹板Herbst矫治器且未使用微型螺钉的受试者组成。比较了Herbst治疗前后的头影测量值。显著性α值设定为0.05。结果。两组所有受试者均成功矫治为双侧Ⅰ类关系；试验组平均治疗时间为8.1个月，对照组为7.8个月。两组之间的几个变量无统计学显著差异。相反，一些变量存在显著差异，如切牙唇倾、下颌骨基骨位置和骨骼差异。结论。本研究表明，与微型螺钉联合使用的Herbst矫治器能更好地控制切牙唇倾，并产生更大的下颌骨骼效应。
