Silva Joelson Fonseca Egidio, Gerszewski Camila, Moresca Ricardo Cesar, Correr Gisele Maria, Flores-Mir Carlos, Moro Alexandre
a Graduate Student, Master's Program in Clinical Dentistry, Positivo University, Curitiba, PR, Brazil.
Angle Orthod. 2015 Jan;85(1):64-71. doi: 10.2319/122113-936.1.
To compare the clinical complications during treatment with either a removable mandibular acrylic splint (RMS) or with a cantilever (HC) Herbst appliance.
Records from 159 Class II, division 1, consecutively treated patients with a Herbst appliance were examined. The sample was composed of 82 male and 77 female patients with a mean age of 11.8 years. The Herbst appliance was used for a mean of 12 months (standard deviation 2.15 months). Two main Herbst groups were analyzed: group RMS (n = 125) and group HC (n = 34). They were further subdivided according to the telescopic system used (Dentaurum type 1 or PMA) and fixation mode (splint with crowns or Grip Tite bands). Patients' clinical records were assessed to identify clinical complications.
The incidence of complications during treatment was 85.3% for the HC group and 88.0% for the RMS group, with no statistically significant difference (Mann-Whitney test, P > .05). The fixation mode (crown or band) also did not show a statistically significant difference (P > .05). Regarding the telescopic system used, the Dentaurum group had 2.9 times more susceptibility to complications than the PMA group, regardless of the Herbst type.
On average, approximately 2.5 complications per patient were reported. Most patients had a maximum of three complications during Herbst treatment. Herbst appliance type (RMS or HC) and fixation mode (crowns or Grip Tite bands) did not influence the number of complications. The PMA (without screws) telescopic system seemed to be more reliable (regarding the number of complications) than Dentaurum type 1, regardless of the appliance design (RMS or HC).
比较使用可摘下颌丙烯酸夹板（RMS）或悬臂式（HC）Herbst矫治器治疗期间的临床并发症。
检查了159例连续接受Herbst矫治器治疗的安氏II类1分类患者的记录。样本包括82例男性和77例女性患者，平均年龄11.8岁。Herbst矫治器平均使用12个月（标准差2.15个月）。分析了两个主要的Herbst组：RMS组（n = 125）和HC组（n = 34）。根据所使用的伸缩系统（Dentaurum 1型或PMA）和固定方式（带冠夹板或Grip Tite带环）进一步细分。评估患者的临床记录以确定临床并发症。
HC组治疗期间并发症发生率为85.3%，RMS组为88.0%，差异无统计学意义（曼-惠特尼检验，P > 0.05）。固定方式（冠或带环）也未显示出统计学上的显著差异（P > 0.05）。关于所使用的伸缩系统，无论Herbst类型如何，Dentaurum组发生并发症的易感性是PMA组的2.9倍。
平均而言，每位患者报告约2.5种并发症。大多数患者在Herbst治疗期间最多出现三种并发症。Herbst矫治器类型（RMS或HC）和固定方式（冠或Grip Tite带环）不影响并发症的数量。无论矫治器设计（RMS或HC）如何，PMA（无螺钉）伸缩系统在并发症数量方面似乎比Dentaurum 1型更可靠。
