Howard-Bowles Eamon, Ho-A-Yun John, Ulhaq Aman, McGuinness Niall J P
a Orthodontic Department , Edinburgh Dental Institute , Edinburgh , UK.
b Orthodontic Department , Victoria Hospital , Kirkcaldy , UK.
J Orthod. 2017 Jun;44(2):97-104. doi: 10.1080/14653125.2017.1311446. Epub 2017 Apr 7.
(1) To undertake a service evaluation of the Index of Orthognathic Functional Treatment Need (IOFTN). (2) To determine its suitability to replace the Index of Orthodontic Treatment Need (IOTN) in the assessment of patients with dentofacial deformity.
Laboratory- and questionnaire-based study.
UK hospital-based orthodontic department.
Cohen's Kappa was used to assess inter- and intra-operator reliability for the IOTN and the IOFTN against 30 orthognathic patients' models scored to a 'gold standard'. Questionnaires gathered feedback on ease of use of the IOFTN. Change in treatment need status for a further 60 orthognathic patients was estimated utilising the IOTN, the IOFTN and a modified IOTN (mIOTN).
Inter-operator agreement with the 'gold standard' for the IOTN and the IOFTN ranged from 0.64-0.90 and 0.61-0.91, respectively. Intra-operator agreement for the IOTN and the IOFTN ranged from 0.46-1.00 to 0.59-0.95, respectively. Mean feedback score was 9.08 out of a maximum score of 10. Overall, 88.9% of patients scored grades 4 or 5 on the IOFTN (IOTN = 87.8%; mIOTN = 77.8%).
The IOFTN is simple and reliable to use. It is an appropriate aid in the prioritisation of surgical patients. Further recommendations are given.
（1）对正颌功能治疗需求指数（IOFTN）进行服务评估。（2）确定其在评估牙颌面畸形患者时替代正畸治疗需求指数（IOTN）的适用性。
基于实验室和问卷的研究。
英国医院正畸科。
采用Cohen's Kappa系数评估IOTN和IOFTN在30例正颌患者模型上与“金标准”评分的操作者间和操作者内信度。通过问卷收集对IOFTN易用性的反馈。利用IOTN、IOFTN和改良IOTN（mIOTN）估计另外60例正颌患者治疗需求状态的变化。
IOTN和IOFTN与“金标准”的操作者间一致性分别为0.64 - 0.90和0.61 - 0.91。IOTN和IOFTN的操作者内一致性分别为0.46 - 1.00和0.59 - 0.95。平均反馈分数在满分10分中为9.08分。总体而言，88.9%的患者在IOFTN上得分为4级或5级（IOTN = 87.8%；mIOTN = 77.8%）。
IOFTN使用简单且可靠。它是确定手术患者优先级的合适辅助工具。并给出了进一步建议。
