ABSTRACT
Objective@#To analyze factors affecting stability after fixed orthodontic treatment.@*Methods@#Five hundred and forty-four patients who had finished fixed orthodontic treatment more than two years in First Department of Orthodontics, China Medical University from January, 2000 to December, 2017 were investigated and the rate of regular revisit was counted. The data of 288 patients were successfully collected by calling or sending text messages and the rate of standard use of retainers as prescribed (patients wore retainers for 24 months or longer) was counted. According to the variation of peer assessment rating (PAR) index at the start of retention and the time the data collected, the patients were divided into relapse group (variation of PAR index >5) and non-relapse group (variation of PAR index ≤5). Difference significance analysis and multiple-factor logistic regression analysis were used. Sixty patients wearing retainers well were collected and the curative effects of Hawley retainer and vacuum formed retainer (VFR) were compared, which included overbite, overjet, maxillary irregularity index, mandibular irregularity index, width betwenn canine and width between first molar.@*Results@#The rate of regular revisit was 41.0% (223/544). Two hundred and one of 288 patients (69.8%) who were visited successfully had regular revisit, and 60.4%(174/288) of the patients wore retainers well; 30.2% (87/288) of the patients who were visited successfully didn't have regular revisit, and 10.4% (30/288) of the patients wore retainers well. Difference significance analysis showed that there was highly significant difference between relapse group and non-relapse group in the type of retainer and duration of retention (P<0.01). One hundred and forty of 224 patients (62.5%) in non-relapse group and 37.5% (24/64) of the patients in relapse group used VFR, and the duration of retention in non-relapse group was significantly longer than that in relapse group (P<0.01). Multiple-factor Logistic regression analysis showed that wearing Hawley retainers (OR=3.067, P<0.05) was the risk factor influencing relapse. The duration of retention (OR=0.832, P<0.01) was the protective factor influencing relapse. Independent-sample t test indicated that the variations of maxillary [(0.82±0.36) mm] and mandibular [(1.05±0.22) mm] irregularity index in Hawley retainer group were larger than maxillary [(0.64±0.29) mm] and mandibular [(0.72±0.35) mm)] irregularity index in VFR group, respectively. The differences between the two groups were significant (P<0.05).@*Conclusions@#Duration of retention was implicated in stability after orthodontic treatment. VFR had better effect in the aspects of irregularity index than Hawley retainer.
ABSTRACT
Objective To evaluate the effect of perioperative nutritional support on the prognosis of lung transplant.Methods Retrospective analysis was carried out on nutritional support for 6 lung transplant recipients in the Department of Thoracic Surgery in Henan Provincial People's Hospital between September 2015 and September 2016.The recipients were all males,with ages ranging from 28 to 60 (40± 12.1).The recipients' body mass index (BMI),serum albumin and pulmonary function at the first test after admission (t1),the last test before surgery (t2) and the last test after surgery (t3) were compared.The recipients' nutritional status was assessed with subjective global assessment.Results The 6 patients had successful single-lung transplant,without mortality or severe complications.At t3,all of them had increases in BMI by (2.4±1.4) kg/m2,weight by (3.2±1.2) kg,deltoid skin-fold thickness by (3.0±0.35) mm,prealbumin by (30±10.4) g/L,total protein (15.2±6.4) g/L,albumin by (6.4±4.1) g/L,triglyceride by (0.2± 1.4) mmoL/L,and total cholesterol by (1.4± 0.9) mmol/L (P＜0.01).The patients were followed up for 6 to 12 months.SGA results suggested no abnormality in their nutrition,and the patients were well able to function independently.Conclusion Nutritional support is vital for patients with severe malnutrition during the perioperative period of lung transplant,and can significantly improve the patient's quality of life.