scholarly journals Retrospective analysis of orthodontic treatment outcomes and its relation to postretention stability

2006 ◽  
Vol 14 (5) ◽  
pp. 324-329 ◽  
Author(s):  
Karina Maria Salvatore de Freitas ◽  
Marcos Roberto de Freitas ◽  
Guilherme Janson ◽  
Arnaldo Pinzan ◽  
José Fernando Castanha Henriques
Keyword(s):  
Treatment Outcomes ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Pearson Correlation ◽  
Class I ◽  
Par Index ◽  
The Mean ◽  
The Times

OBJECTIVE: The present study was designed to retrospectively evaluate Class I malocclusion cases treated with extraction of the four first premolars, aiming to establish the relationship between the quality of orthodontic treatment outcomes and the long-term occlusal stability. MATERIAL AND METHODS: The sample comprised 94 patients of both genders, presenting Class I malocclusion, treated with extractions of the four first premolars and Edgewise mechanics. All the patients selected were whites, being 50 males and 44 females. The mean pretreatment age was 13.46 years (s.d. 1.8). The mean treatment time was 2.09 years (s.d. 0.58), the mean retention time was 1.63 years (s.d. 0.73) and the mean time of postretention evaluation was 5.31 years (s.d. 1.61). The dental casts were measured at pretreatment (T1), posttreatment (T2) and postretention (T3), by the PAR index and by the Little irregularity index, and the correction due to treatment (T1-2) and the change at the postretention period (T3-2) were calculated. The descriptive statistics was performed and the Pearson correlation coefficient was applied for the PAR and the Little indices in the total sample, among the times evaluated. RESULTS: The mean PAR reduction due to treatment was 78.54%, and 66.6%, at the postretention stage related to pretreatment stage. Significant correlations were found for the PAR index at the times evaluated, except between T1 and T2 and between T1-2 and T3. In other words, the higher the treatment correction (T1-2), the lower the posttreatment PAR index (PAR T2) will be, and the higher will be the PAR change at the postretention period (PAR T3-2). Also, the higher the posttreatment PAR score (PAR T2), the higher will be the postretention PAR score (PAR T3). CONCLUSION: It was concluded that the quality of orthodontic treatment outcomes is not related to the long-term occlusal stability.

scholarly journals Orthodontic Treatment Characteristics and Outcomes in an Educational Setting

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
T. Al-Jewair ◽  
V. Ryan ◽  
S. Warunek
Keyword(s):  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Educational Setting ◽  
Dental Esthetics ◽  
Treatment Characteristics ◽  
The Mean

Background. To assess and correlate orthodontic treatment characteristics and outcomes in an educational setting. Methods. A total of 287 patients were included. Independent chart reviews were conducted to gather demographic and pretreatment diagnostic information. Posttreatment digital records were graded with the ABO C-R Eval and the CCA methods. Pearson correlation coefficients were calculated to determine associations between variables. Results. Of the 287 patients, 122 (42.5%) were male and 165 (57.5%) were female. The total average treatment time was 33.87 ± 10.28 months, with a range from 11 to 75 months. The mean ABO C-R Eval score was 29.10 ± 8.59 points. The parameters with the highest scores were buccolingual inclination and occlusal contacts. The mean CCA score was 3.36 ± 2.05 points. The highest scores were recorded for dental esthetics and management of the periodontium. Higher ABO DI scores were weakly correlated with longer treatment times (r = 0.258; p<0.001). ABO C-R Eval scores showed a weakly significant association with treatment duration (r = 0.162; p=0.006), while CCA scores were moderately associated with treatment duration (r = 0.451; p<0.001). Conclusions. As treatment duration increased, the total ABO C-R Eval and CCA scores tended to increase; thus, quality of treatment outcomes decreased. A significant positive correlation was also found with the ABO DI score and treatment duration.

scholarly journals PAR Evaluation of Treated Class I Extraction Patients

2008 ◽  
Vol 78 (2) ◽  
pp. 270-274 ◽  
Author(s):  
Karina Maria Salvatore Freitas ◽  
Daniel Salvatore Freitas ◽  
Fabrício Pinelli Valarelli ◽  
Marcos Roberto Freitas ◽  
Guilherme Janson
Keyword(s):  
Treatment Time ◽  
Peer Assessment ◽  
High Standard ◽  
Class I ◽  
Par Index ◽  
Treatment Changes ◽  
The Mean ◽  
Dental Casts ◽  
Peer Assessment Rating

Abstract Objective: To evaluate treatment changes and quality of finishing occlusion in Class I patients treated with four premolar extractions. Material and Methods: Dental casts of 94 subjects (50 males and 44 females) were evaluated. Mean pretreatment age was 13.46 years, and mean treatment time was 2.09 years. The peer assessment rating (PAR) index was obtained from pretreatment and posttreatment dental casts. Results: The mean pretreatment PAR index of 29.46 was reduced to 6.32 at posttreatment stage, achieving a reduction of 78.54% with treatment. There was correlation between the initial PAR and correction during treatment, that is, the more severe the malocclusion the greater the treatment changes. Conclusion: The cases evaluated showed a high-standard orthodontic finishing.

scholarly journals The effect of changes in primary attending doctor coverage frequency on orthodontic treatment time and results

2015 ◽  
Vol 85 (6) ◽  
pp. 1051-1056 ◽  
Author(s):  
Emily Caskey Peppers ◽  
V. Leroy Leggitt ◽  
Joseph M. Caruso ◽  
Roland Neufeld ◽  
James Green
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Time ◽  
Peer Assessment ◽  
Missed Appointments ◽  
Treatment Results ◽  
Patient Age ◽  
Quality Of Treatment ◽  
The Mean ◽  
Peer Assessment Rating

ABSTRACT Objective:  To determine whether changes in primary attending (PA) doctor coverage frequency caused an increase in orthodontic treatment time or a decrease in the quality of treatment results in a postgraduate orthodontic clinic. The effect of T1 Peer Assessment Rating (PAR) scores on PA doctor coverage frequency, treatment times, and results was also evaluated. Materials and Methods:  A sample of 191 postorthodontic subjects was divided into three groups based on PA doctor coverage (high, medium, or low). Treatment times, treatment results, and other variables were compared between the three PA coverage groups. Additionally, the sample was divided into three groups based on T1 PAR scores. Attending coverage frequency, treatment times, and results were compared between the T1 PAR groups. Results:  No statistically significant differences were found in treatment time (P  =  .128) or results (P  =  .052). There were no statistically significant differences in the mean scores for T1 PAR (P  =  .056), T2 PAR (P  =  .602), patient age at T1 (P  =  .747), total appointments (P  =  .128), missed appointments (P  =  .177), or cancelled appointments (P  =  .183). Statistically significant differences were found between the low T1 PAR group and the medium and high T1 PAR groups (attending coverage, P  =  .008; results, P &lt; .001; treatment time, P  =  .001). Conclusions:  Under the conditions of this study, variations in PA doctor coverage frequency did not lengthen orthodontic treatment or reduce the quality of treatment results. Low T1 PAR scores were associated with less PA coverage, less change in PAR, and shorter treatment times.

scholarly journals Another way of looking at treatment stability

2016 ◽  
Vol 86 (5) ◽  
pp. 721-726 ◽  
Author(s):  
Kaoutar Zinad ◽  
Annemie M.W.J. Schols ◽  
Jan G.J.H. Schols
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Initiation ◽  
Peer Assessment ◽  
Treated Group ◽  
Class I ◽  
Physiological Changes ◽  
Treatment Responses ◽  
Study Participants ◽  
Gender Specific

ABSTRACT Objective:  To determine the contribution of normal physiological changes to the overall manifestation of a relapse after orthodontic treatment. We analyzed long-term changes in the dentition of patients with Class I malocclusions after orthodontic treatment compared with a representative group with untreated Class I malocclusions. Materials and Methods:  Study participants (n  =  66; mean age, 12 years at treatment initiation) were treated for Class I malocclusions. Dental changes were evaluated at 2, 5, 10, and 15 years after treatment. Control participants (n  =  79) had untreated Class I malocclusions (n  =  53 evaluated at ages 12 and 22 years; n  =  26 evaluated at ages 19 and 39 years). Dental changes were evaluated with the Peer Assessment Rating (PAR) index. Results:  In untreated and treated groups, PAR scores increased over time with gender-specific changes. In the untreated groups, the PAR score significantly increased in male participants between the ages of 12 and 22 years (P  =  .04) and in female participants between the ages of 19 and 39 years (P  =  .001). In the treated group, early posttreatment changes were primarily related to the initial treatment response. Later changes in the PAR score could be attributed to physiological changes, with the same gender-specific changes as those observed in the untreated group. Conclusions:  The pattern of physiological changes in dentition for participants between the ages of 12 and 39 was different between sexes. Females showed more relapse than males between 10 and 15 years posttreatment. This distinction should be considered when evaluating long-term orthodontic treatment responses.

scholarly journals Multi-periodic climate dynamics: spectral analysis of long-term instrumental and proxy temperature records

2013 ◽  
Vol 9 (1) ◽  
pp. 447-452 ◽  
Author(s):  
H.-J. Lüdecke ◽  
A. Hempelmann ◽  
C. O. Weiss
Keyword(s):  
Pearson Correlation ◽  
Temperature Drop ◽  
Ice Cores ◽  
Climate Dynamics ◽  
Fluctuation Analysis ◽  
Harmonic Decomposition ◽  
The Mean ◽  
Temperature Records ◽  
Instrumental Records

Abstract. The longest six instrumental temperature records of monthly means reach back maximally to 1757 AD and were recorded in Europe. All six show a V-shape, with temperature drop in the 19th and rise in the 20th century. Proxy temperature time series of Antarctic ice cores show this same characteristic shape, indicating this pattern as a global phenomenon. We used the mean of the six instrumental records for analysis by discrete Fourier transform (DFT), wavelets, and the detrended fluctuation analysis (DFA). For comparison, a stalagmite record was also analyzed by DFT. The harmonic decomposition of the abovementioned mean shows only six significant frequencies above periods over 30 yr. The Pearson correlation between the mean, smoothed by a 15-yr running average (boxcar) and the reconstruction using the six significant frequencies, yields r = 0.961. This good agreement has a > 99.9% confidence level confirmed by Monte Carlo simulations. It shows that the climate dynamics is governed at present by periodic oscillations. We find indications that observed periodicities result from intrinsic dynamics.

scholarly journals pH of exudate test in the physiological quality of crambe seeds

2016 ◽  
Vol 46 (6) ◽  
pp. 1014-1018 ◽  
Author(s):  
Charline Zaratin Alves ◽  
Lennis Afraire Rodrigues ◽  
Carlos Henrique Queiroz Rego ◽  
Josué Bispo da Silva
Keyword(s):  
Pearson Correlation ◽  
Raw Material ◽  
Mean Values ◽  
Tukey Test ◽  
Physiological Quality ◽  
The Subject ◽  
The Mean ◽  
C 30

ABSTRACT: Crambe is a rapeseed with high oil content and can be used as a winter cover or as a source of raw material for the production of biodiesel, however espite the growing interest in the culture, research on the subject is still incipient, especially concerning the seed production and analysis technology. The purpose of this study is to evaluate the physiological quality of crambe seeds, 'FMS Brilhante' cultivar, by testing the pH of exudate. Five seed lots were submitted to the determination of water content and the tests of germination and vigor (first count, emergence and tetrazolium). In the conduction of pH exudate test, temperatures (25 and 30oC), and periods of seed imbibition in water (15, 30 and 45 minutes) were tested. The experiment was conducted in a completely randomized manner, with four replicates, and the mean values were compared by the Tukey test at 5% probability; Pearson correlation between the pH of the exudate and initial tests was also made. Testing the pH of exudate is promising for separating lots of crambe seeds and the following combinations of 25°C/30 minutes or 30°C/45 minutes can be used.

scholarly journals Long-Term Health-Related Quality of Life of Surgically Treated Pituitary Adenoma Patients: A Descriptive Study

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
A. Raappana ◽  
T. Pirilä ◽  
T. Ebeling ◽  
P. Salmela ◽  
H. Sintonen ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Reference Population ◽  
Somatostatin Analog ◽  
Health Related Quality ◽  
Related Quality ◽  
Health Related ◽  
The Mean ◽  
Generic Hrqol Instrument

Context. The literature concerning the health-related quality of life (HRQoL) of patients with surgically treated PA is controversial. Objective. To describe the long-term HRQoL of surgically treated patients in all PA classes. Design and subjects. The 15D, a generic HRQoL instrument producing a 15-dimensional profile and a single 15D index score (a difference ≥0.03 on a 0-1 scale is considered clinically important), was used to assess the HRQoL of a 13-year surgical cohort of PA patients in Northern Finland. Results and Conclusion. Nighty-eight eligible consecutive patients with surgically treated PA were studied at an average of 6.3 years after their latest pituitary operation. The average postoperative 15D profiles in patients with non-functioning PA and in acromegalics without GH-suppressive medical treatment were similar to those of the age-standardized general population. However, after this rather long followup, the mean 15D score and the number of statistically significant 15D dimension impairments, compared with those of their reference population, were 0.11 and 9/15, 0.10 and 3/15, and 0.08 and 7/15 for Cushing’s disease, acromegalics needing somatostatin analog, and prolactinoma patients, respectively. Hypopituitarism with replacement medication was not associated with impaired HRQoL. The somatostatin-analog-associated HRQoL finding warrants further clinical research.

736 PL11.04 HEALTH-RELATED QUALITY OF LIFE OF PATIENTS WITH ESOPHAGEAL CANCER FOLLOWING ESOPHAGECTOMY TREATED WITH NEOADJUVANT CHEMORADIOTHERAPY OR CHEMOTHERAPY: EUROPEAN MULTICENTER STUDY

2021 ◽  
Vol 34 (Supplement_1) ◽  
Author(s):  
Nannet Schuring ◽  
Sheraz Markar ◽  
Eliza R C Hagens ◽  
Egle Jezerskyte ◽  
Mirjam A G Sprangers ◽  
...  
Keyword(s):  
Esophageal Cancer ◽  
Neoadjuvant Chemoradiotherapy ◽  
P Value ◽  
Health Related Quality ◽  
Related Quality ◽  
Health Related ◽  
The Mean ◽  
Eortc Qlq

Abstract   Curative treatment for patients with esophageal cancer consists of neoadjuvant treatment and radical surgical resection. Two different strategies exist; patients can either be treated with perioperative chemotherapy (CT) or neoadjuvant chemoradiotherapy (CRT). Both strategies improve 5-year survival rates, it is however not known if these treatments affect long-term Health-Related Quality of Life (HR-QoL) differently. The aim of this study was to compare HR-QoL between patients following CT and CRT followed by esophagectomy for esophageal cancer. Methods The LASER study database comprises data of a multicenter European study, with focus on HR-QoL among disease-free patients at least one year following an esophagectomy for esophageal or junctional cancer. Included patients completed the LASER, EORTC-QLQ-C30 and EORTC-QLQ-OG25 questionnaires. From this database we extracted patients either treated with CT or CRT for analysis. The primary endpoint was the mean difference in all long-term HR-QoL domains and LASER key symptom scores, using univariable and multivariable logistic regression analysis. The secondary endpoint was to compare the reported HR-QoL domain scores in the study population to the reference values of the general population. Results Among the 565 included patients, 349 (61.8%) received CRT, and 216 (38.2%) were treated with CT. The mean age was 63.7 years (±SD 8.6), and mean time since surgery was 4.3 years (±SD 1.7). After multivariable analysis, patients treated with CT reported worse outcomes on ‘Social Functioning’ (∆means 4.56, p-value&lt;0.05), more symptomatology on domains ‘Insomnia’ (∆means 5.65 p-value&lt;0.05) and ‘Diarrhea’ (∆means 5.93 p-value&lt;0.05) of the QLQ-C30 questionnaire, and more symptomatology on domains ‘Reflux’ (∆means 7.40, p-value&lt;0.05), ‘Odynophagia’(∆means 4.66 p-value&lt;0.05) and ‘Pain and discomfort’(∆means 4.34, p-value&lt;0.05) of the QLQ-OG25 questionnaire. No differences were observed for the LASER key symptoms. Conclusion Significant differences in favor of CRT were observed in several long-term HR-QoL domains for patients following esophagectomy for cancer. However, none of the observed differences in the reported long-term HR-QoL domains between patients treated with CT or with CRT, were clinically relevant (∆means≠ ≥ 10 points). Selection of neoadjuvant therapy should therefore be based on patient characteristics.

P6489Preoperative determination of artificial chordae length by transesophageal echocardiography

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
A Pitsis ◽  
N Tsotsolis ◽  
E Theofilogiannakos ◽  
H Boudoulas ◽  
K Boudoulas
Keyword(s):  
Mitral Valve ◽  
Mitral Valve Repair ◽  
Pearson Correlation ◽  
Transoesophageal Echocardiography ◽  
Valve Repair ◽  
Bottom Part ◽  
Artificial Chordae ◽  
The Mean

Abstract The use of artificial chordae is one of the main techniques used in mitral valve repair to treat prolapsing leaflets, especially in anterior and bileaflet prolapse. With the use of PTFE sutures to replace elongated or ruptured chords mitral valve repair rates have significantly improved. The main difficulty with this technique is to determine the optimal length of the artificial chordae. Intraoperative transoesophageal echocardiography (TOE) is mandatory in mitral valve repair in order to determine the type of lesion of the mitral valve but also to evaluate the quality of the repair. We examined the accuracy of preoperative prediction of artificial chordae length by the preoperativeTOE. Patients and methods Twenty-one consecutive patients (7 females) underwent mitral valve repair with artificial chordae for significant mitral valve prolapse in our department during the last year. The median age of the patients was 62 y. (range 25 - 87) and the mean EuroSCORE II 3,36% (SD 4,61%). During the prep TOE we determined the predicted length of the required replacement chordae for the repair using mainly the 4 chamber view to calculate the distance between the tip of the papillary muscle and the coaptation point of the two leaflets and we subtracted 5mm which is the minimum of the desired coaptation length (top right part of the Figure). All the patients underwent totally endoscopic mitral repair through a 3 cm right periareolar incision. 14,3% of the patients had anterior leaflet (AML) prolapse, 23,8% bileaflet and 61,9% posterior (PML). The appropriate length of the required chordae was measured intraoperatively. Results We used on average 3 loops of artificial chordae size 23,3 mm (SD 1,15mm) to treat the AML prolapse, 5 loops size 23,2 mm (SD 2,28mm) to treat the bileaflet prolapse and 2,23 loops size 18mm (SD 2mm) to treat the PML prolapse (bottom part of the figure). The predicted size of the artificial chordae had a positive correlation to the length used (Pearson correlation, p<0,001) as demonstrated in the top left part of the Figure. An annuloplasty band was implanted to all the patients. All the patients had no mitral regurgitation in the postoperative TOE. The mean valve area was 3,54cm2 (SD 0,57) and the mean peak gradient 5,6 mmHg (SD 1,82). There was no mortality. Chordae length predicted by echo Conclusion The length of artificial chordae can be predetermined with great accuracy with the use of TOE, making TOE an important tool not only for the determination of the mitral lesion and quality of the repair but also for the planning of the operation.

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