Oeiras Valéria Jacques, Silva Valéria Assis Almeida E, Azevedo Leidiana Aguiar, Lobato Vanessa Soares, Normando David
Universidade Federal do Pará - UFPA, School of Dentistry, Department of Orthodontics, Belém, Pará, Brazil.
Braz Oral Res. 2016 Dec 22;30(1):e136. doi: 10.1590/1807-3107BOR-2016.vol30.0136.
This split-mouth randomized clinical trial aimed to compare the survival rate of bonding and banding molar tubes in adult orthodontic patients. Eligibility criteria included adults (aged >18 years), no active caries, restorations, or fractures in the upper and lower molars. The main outcome was any type of first-time failure in molar tubes. A computer-generated randomization scheme was used in a 1:1 ratio. The survival rate was estimated for 32 adult patients, in whom a tube was bonded to a molar tooth using composite resin on one side and a band was cemented with glass ionomer onto the same tooth in the contralateral arch. A total of 59 banded and 59 bonded molars were followed up for 12 months. Blinding was not applicable. Survival analysis including Cox regression was used at p < 0.05. The survival rate of bonded molars was not statistically different from that of banded molars (log-rank test, p = 0.97). Hazard ratio (HR) was 0.72 (95%CI, 0.38-1.31). Bonded upper molars yielded a survival rate of 81.25% (26 out of 32) compared to 71.87% (23 out of 32) for banded upper molars. The survival rate was 66.66% (18 out of 27) for banded lower molars and 59.25% for bonded lower molars (16 out of 27). The HR for lower vs. upper arch was 2.16 (95%CI, 1.18-3.98). No serious problem was observed other than gingivitis associated with plaque accumulation. In contrast to previous studies in young patients, in adults, bonding orthodontic tubes to molars is similar to molar banding. However, both procedures had a high failure rate in the lower arch.
这项双盲随机临床试验旨在比较成年正畸患者中粘结和带环磨牙管的存活率。纳入标准包括成年人(年龄>18岁),上下颌磨牙无活动性龋齿、修复体或骨折。主要观察指标是磨牙管任何类型的首次失败情况。采用计算机生成的随机方案,比例为1:1。对32例成年患者进行了存活率评估,这些患者一侧使用复合树脂将管粘结到磨牙上,对侧牙弓的同一颗牙上用玻璃离子水门汀粘结带环。共对59颗带环磨牙和59颗粘结磨牙进行了12个月的随访。无法实施盲法。采用包括Cox回归在内的生存分析,p<0.05。粘结磨牙的存活率与带环磨牙的存活率无统计学差异(对数秩检验,p = 0.97)。风险比(HR)为0.72(95%CI,0.38 - 1.31)。粘结上颌磨牙的存活率为81.25%(32颗中的26颗),而带环上颌磨牙的存活率为71.87%(32颗中的23颗)。带环下颌磨牙的存活率为66.66%(27颗中的18颗),粘结下颌磨牙的存活率为59.25%(27颗中的16颗)。下颌与上颌牙弓的HR为2.16(95%CI,1.18 - 3.98)。除了与菌斑积聚相关的牙龈炎外,未观察到其他严重问题。与之前针对年轻患者的研究相比,在成年人中,将正畸管粘结到磨牙上与磨牙带环相似。然而,两种方法在下颌牙弓中的失败率都很高。