Markic Goran, Katsaros Christos, Pandis Nikolaos, Eliades Theodore
Clinic for Orthodontics and Paediatric Dentistry, Centre of Dental Medicine, University of Zurich, Plattenstrasse 11, Zurich 8032, Switzerland.
Prog Orthod. 2014 Apr 1;15(1):29. doi: 10.1186/s40510-014-0029-x.
The aim of the survey was to obtain information on the treatment plan preferences, mechanics and characteristics of temporary anchorage device (TAD) application using a single case presented to orthodontists in Switzerland.
A structured questionnaire to be completed by all study participants with case-specific (treatment plan including mechanics and TAD usage) and general questions (general fixed appliance and TAD usage as well as professional, educational and demographic questions) together with an orthodontic borderline case was utilised. The case was a female adult with dental Class II/2, deep bite and maxillary anterior crowing, who had been treated in childhood with extraction of four premolars and fixed appliance followed by wisdom tooth extraction.
The response rate was 24.4% (108 out of 443). The majority (96.3%, 104) proposed comprehensive treatment, while 3.7% (4) planned only alignment of maxillary teeth. 8.3% (9) included a surgical approach in their treatment plan. An additional 0.9% (1) combined the surgical approach with Class II mechanics. 75.1% (81) decided on distalization on the maxilla using TADs, 7.4% (8) planned various types of Class II appliances and 3.7% (4) combined distalization using TADs or headgear with Class II appliances and surgery. Palatal implants were the most popular choice (70.6%, 60), followed by mini-screws (22.4%, 19) and mini-plates on the infrazygomatic crests (7.0%, 6). The preferred site of TAD insertion showed more variation in sagittal than in transversal dimension, and the median size of mini-screws used was 10.0-mm long (interquartile range (IQR) 2.3 mm) and 2.0-mm wide (IQR 0.3 mm).
Distalization against palatal implants and then distalization against mini-screws were the most popular treatment plans. Preferred site for TAD insertion varied depending on type and size but varied more widely in the sagittal than in the transversal dimension.
本调查旨在通过向瑞士正畸医生展示的一个单一病例，获取有关临时锚固装置（TAD）应用的治疗计划偏好、力学原理和特点的信息。
使用一份结构化问卷，所有研究参与者需填写特定病例（包括力学原理和TAD使用情况的治疗计划）以及一般性问题（一般固定矫治器和TAD的使用情况，以及专业、教育和人口统计学问题），同时提供一个正畸临界病例。该病例为一名成年女性，患有安氏II类2分类错牙合、深覆牙合和上颌前牙拥挤，童年时接受过四颗前磨牙拔除和固定矫治器治疗，随后拔除了智齿。
回复率为24.4%（443人中108人）。大多数人（96.3%，104人）建议进行综合治疗，而3.7%（4人）仅计划排齐上颌牙齿。8.3%（9人）在治疗计划中纳入了手术方法。另外0.9%（1人）将手术方法与II类力学原理相结合。75.1%（81人）决定使用TAD对上颌进行远中移动，7.4%（8人）计划使用各种类型的II类矫治器，3.7%（4人）将使用TAD或头帽进行远中移动与II类矫治器和手术相结合。腭部种植体是最受欢迎的选择（70.6%，60人），其次是微型螺钉（22.4%，19人）和颧下嵴微型钢板（7.0%，6人）。TAD植入的首选部位在矢状面上的变化比在横向维度上更大，所使用微型螺钉的中位尺寸为长10.0毫米（四分位间距（IQR）2.3毫米）、宽2.0毫米（IQR 0.3毫米）。
利用腭部种植体进行远中移动，然后利用微型螺钉进行远中移动是最受欢迎的治疗计划。TAD植入的首选部位因类型和尺寸而异，但在矢状面上的变化比在横向维度上更大。
