Departments of Oral Development and Orthodontics, Institute of Dentistry, University of Oulu, Oulu, Finland. anna-sofi
Eur J Orthod. 2012 Dec;34(6):704-9. doi: 10.1093/ejo/cjr085. Epub 2011 Jul 12.
The aim of this study was to evaluate the relationship between occlusal characteristics and oral health-related quality of life in adults who underwent orthodontic or orthodontic-surgical treatment. The study group consisted of 51 adult patients (35 women, 16 men) with severe malocclusion and considerable functional disorders. Thirty-six of the patients underwent combined orthodontic-surgical treatment, while 15 underwent orthodontic treatment. Data were collected before and after treatment. Mean follow-up period was 5.0 years (range 2.2-6.7 years). Occlusal characteristics were measured from dental casts by using Peer Assessment Rating (PAR) index. A self-completed Oral Health Impact Profile (OHIP-14) was used to measure oral impacts. The changes in PAR and OHIP-14 were measured, and correlation between PAR and OHIP tested before and after treatment and in the changes during the follow-up. Statistical significance was evaluated with the paired samples t-test and Mann-Whitney U-test, and the correlation between PAR and OHIP scores assessed using Pearson's and Spearman's correlation coefficient. The occlusion was significantly improved in all subjects, mean PAR reduction being 78.1 per cent. The prevalences of oral impacts at threshold fairly often' or very often' before and after treatment were 70.6 per cent and 9.8 per cent, respectively (P < 0.001). The PAR and OHIP scores correlated after treatment but not before treatment or in the changes. The treatment of severe malocclusion reduced the reported oral impacts to the level of general population and significantly improved oral health-related quality of life.
本研究旨在评估正畸或正畸-正颌联合治疗成人的咬合特征与口腔健康相关生活质量之间的关系。研究组包括 51 名（35 名女性，16 名男性）严重错颌且存在明显功能障碍的成年患者。其中 36 名患者接受了正畸-正颌联合治疗，15 名患者仅接受了正畸治疗。分别于治疗前后采集数据。平均随访时间为 5.0 年（范围 2.2-6.7 年）。使用 Peer Assessment Rating (PAR) 指数从牙模上测量咬合特征。采用自填式 Oral Health Impact Profile (OHIP-14) 评估口腔影响。测量 PAR 和 OHIP-14 的变化，评估治疗前后和随访期间 PAR 和 OHIP 之间的相关性。采用配对样本 t 检验和 Mann-Whitney U 检验评估统计学显著性，采用 Pearson 和 Spearman 相关系数评估 PAR 和 OHIP 评分之间的相关性。所有患者的咬合均显著改善，平均 PAR 降低 78.1%。治疗前后阈值为“相当频繁”或“非常频繁”的口腔影响患病率分别为 70.6%和 9.8%（P<0.001）。治疗后 PAR 和 OHIP 评分相关，但治疗前和随访期间无相关性。严重错颌的治疗将报告的口腔影响降低到一般人群的水平，并显著改善了口腔健康相关生活质量。
