Leite Juliana S, Matiussi Luciano B, Salem Anne C, Provenzano Maria G A, Ramos Adilson L
a Postgraduate student, Department of Dentistry, State University of Maringá, Maringá, Brazil.
b Private practice, Ubiratã, Brazil.
Angle Orthod. 2016 Sep;86(5):734-9. doi: 10.2319/031815-170.1. Epub 2015 Dec 31.
To evaluate the overbite correction of fixed palatal crib (FPC) and bonded lingual spur (BLS) in the early treatment of anterior open bite (AOB) in mixed dentition (primary outcome) as well as its influence on dental and skeletal cephalometric measurements (secondary outcome).
The selected patients had AOB and a mean age of 8.23 years. They were divided into the following three groups by casting lots: control (n = 13), palatal crib (n = 13), and spur (n = 13). Data from the lateral teleradiography was obtained at the beginning, at 6 months, and after 1 year. The cephalometric analysis was performed by Cef-X program, recording the values of SNA, SNB, ANB, SnG oGn, 1.PP, IMPA, nasolabial angle, overbite, and overjet. Intergroup and intragroup comparisons were obtained via one-way analysis of variance.
The degree of AOB was similar at baseline (P > .05). At 6 months and then after 1 year all groups showed improvement in the overbite. However, only the crib and spur groups showed positive overbite. No cephalometric measurements changed significantly over the period analyzed.
We conclude that the FPC and BLS are simple and effective for the treatment of anterior open bite, with the advantage given to the FPC.
评估固定腭托（FPC）和粘结舌刺（BLS）在混合牙列期早期治疗前牙开（AOB）时对覆牙合的矫正情况（主要结果）及其对牙齿和骨骼头影测量值的影响（次要结果）。
选取患有AOB且平均年龄为8.23岁的患者。通过抽签将他们分为以下三组：对照组（n = 13）、腭托组（n = 13）和舌刺组（n = 13）。在开始时、6个月时和1年后获取侧位远距离X线片数据。通过Cef-X程序进行头影测量分析，记录SNA、SNB、ANB、SnG oGn、1.PP、IMPA、鼻唇角、覆牙合和覆盖的值。通过单因素方差分析进行组间和组内比较。
基线时AOB程度相似（P > 0.05）。在6个月时以及之后1年，所有组的覆牙合均有改善。然而，只有腭托组和舌刺组出现了正覆牙合。在所分析的时间段内，头影测量值均无显著变化。
我们得出结论，FPC和BLS治疗前牙开简单有效，FPC更具优势。
