scholarly journals Occlusal outcome after orthodontic treatment with preadjusted straight-wire and standard edgewise appliances

2021 ◽  
Author(s):  
Spyridon N. Papageorgiou ◽  
Raphael Tilen ◽  
Vaska Vandevska-Radunovic ◽  
Theodore Eliades
Keyword(s):  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Prolonged Treatment ◽  
Average Difference ◽  
Similar Treatment ◽  
Straight Wire ◽  
Premolar Extraction ◽  
Significant Difference ◽  
Objective Grading System ◽  
Complete Treatment

Abstract Purpose Orthodontic fixed appliances have been proven to be effective in treating a wide variety of malocclusions, and different types of appliances have emerged during recent decades. However, the comparative effects of different appliances have not been adequately assessed. Thus, the aim was to assess the occlusal outcome of orthodontic treatment with preadjusted straight-wire (SWIRE) and standard edgewise (SEDGE) appliances. Methods In all, 56 patients (mean age: 13.5 years; 45% male) receiving extraction-based treatment with either SWIRE or SEDGE appliances were included. Between-group differences in the occlusal outcome assessed with the American Board of Orthodontists Objective Grading System (ABO-OGS) and treatment duration were analyzed statistically at the 5% level. Results The average ABO-OGS score was 31.3 ± 7.2 points and 34.0 ± 10.4 points in the SWIRE and SEDGE groups with no statistically significant difference between groups (P = 0.26). Treatment duration was significantly shorter in the SWIRE group compared to the SEDGE group, with an average difference of −6.8 months (95% confidence interval [95% CI] = −9.6 to −4.0 months; P < 0.001). Likewise, fewer visits were needed with SWIRE compared to SEDGE appliances with an average difference of −7.2 visits (95% CI = −10.3 to −4.2 visits; P < 0.001). Adjusting for the influence of any potential confounders did not considerably impact the results. Conclusion Similar treatment outcomes were observed after premolar extraction treatment with SWIRE and SEDGE appliances. On the other hand, SEDGE appliances were associated with prolonged treatment duration and more visits needed to complete treatment compared to SWIRE appliances.

scholarly journals Geometric analysis of alveolar bone around the incisors after anterior retraction following premolar extraction

2019 ◽  
Vol 90 (2) ◽  
pp. 173-180 ◽  
Author(s):  
Fan Zhang ◽  
Suk-Cheol Lee ◽  
Jun-Beom Lee ◽  
Kyung-Min Lee
Keyword(s):  
Orthodontic Treatment ◽  
Alveolar Bone ◽  
Shape Change ◽  
Geometric Analysis ◽  
Careful Consideration ◽  
Mandibular Incisor ◽  
Premolar Extraction ◽  
Significant Difference ◽  
Before And After ◽  
Mandibular Incisors

ABSTRACT Objective: To evaluate changes in shape and alterations in thickness and vertical marginal bone levels of the alveolar bone around the maxillary and mandibular incisors before and after orthodontic treatment with premolar extraction using geometric morphometric analysis. Materials and Methods: Thirty-six patients with Class I bialveolar protrusion who underwent orthodontic treatment with premolar extraction were included. Cone-beam computed tomographic scans were obtained from the patients before and after treatment. Five fixed landmarks and 70 semilandmarks were used to represent the morphology of the alveolar bone around the maxillary and mandibular incisors. The coordinates of the landmarks of the alveolar bones were generated by Procrustes fit. The labial and lingual alveolar bone thicknesses around the maxillary and mandibular incisors and vertical marginal bone level were assessed quantitatively. Results: There was a significant difference in shape change of the alveolar bone before and after treatment. The deformation grid of the thin plate spline showed that the thickness and vertical marginal bone decreased on the lingual side after treatment. Shape changes were greater for the lingual alveolar bone on the mandibular incisor than for the maxillary incisors. Conclusions: Orthodontic treatment with premolar extraction might cause loss of alveolar bone around the maxillary and mandibular incisors. Careful consideration is needed to avoid iatrogenic degeneration of periodontal support around the incisors, particularly in the lingual area.

scholarly journals Factors affecting orthodontic treatment time and how to predict it

2021 ◽  
Author(s):  
Rania Adel Mitwally ◽  
Laila Marzooq Alesawi ◽  
Adhwaa Yahya Humedi ◽  
Saleh Saeed Al Baaltahin ◽  
Yara Ahmed Saeedi ◽  
...  
Keyword(s):  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Treatment Time ◽  
Treatment Plan ◽  
Prolonged Treatment ◽  
Large Set ◽  
Factors Affecting ◽  
Underlying Condition ◽  
Level Of Satisfaction ◽  
Speed Up

Orthodontic treatment time has been associated with certain parameters that can affect the different aspects of treatment regards to the patient and orthodontist. Therefore, a large set of research has focused on studying these factors. Many factors have been proposed in the literature as significant predictors for prolonged orthodontic treatment duration. In general, these factors are related to the patient, orthodontist, procedure, and severity of the underlying condition. Acquiring more knowledge about these factors can help orthodontists speed up the treatment plan, which might enhance the treatment outcomes and enhance the levels of satisfaction. In the current study, we have provided updated evidence regarding the different factors affecting orthodontic treatment time according to evidence from studies in the literature. Many factors were reported, including factors related to the procedure and the underlying condition, and factors related to the patient and orthodontist. Increasing knowledge and experience of the orthodontist might increase the level of satisfaction as it has been reported to significantly reduce the treatment duration. However, this should be accompanied by adequate patient compliance, which was also reported to be a significant predictor for prolonged treatment duration. Investigating the application of recent modalities that can speed up the treatment plan is not adequately validated, indicating the need for future validating studies.

scholarly journals Skeletal and dental effects of molar distalization using a modified palatal anchorage plate in adolescents

2014 ◽  
Vol 85 (4) ◽  
pp. 657-664 ◽  
Author(s):  
Noor Laith Sa'aed ◽  
Chong Ook Park ◽  
Mohamed Bayome ◽  
Jae Hyun Park ◽  
YoonJi Kim ◽  
...  
Keyword(s):  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Treatment Results ◽  
Molar Distalization ◽  
Lateral Cephalograms ◽  
Significant Difference ◽  
Main Effect ◽  
Skeletal Effects

ABSTRACT Objective:  To evaluate and compare skeletal effects and the amount of molar distalization in maxilla using modified palatal anchorage plate (MPAP) vs headgear appliances in adolescent patients. Materials and Methods:  Pre- and posttreatment lateral cephalograms of 45 Class II malocclusion patients were analyzed; 24 were treated with MPAP appliances (age, 12.4 years) and 21 with headgear (age, 12.1 years). Fixed orthodontic treatment started with the distalization process in both groups. Thirty-two variables were measured and compared between both groups using multivariate analysis of covariates. Results:  There was no significant main effect of the appliance type on the treatment results (P  =  .063). Also, there was no significant main effect of the appliance type on both pre- and posttreatment comparisons (P  =  .0198 and .135, respectively). The MPAP and headgear groups showed significant distalization of maxillary first molars (3.06 ± 0.54 mm and 1.8 ± 0.58 mm, respectively; P &lt; .001). Sagittal skeletal maxillomandibular differences were improved after treatment (P &lt; .001), with no significant differences between the two groups. No significant difference in treatment duration was found between the groups. Conclusions:  The MPAP showed a significant skeletal effect on the maxilla. Both MPAP and headgear resulted in distalization of maxillary first molars. Therefore, it is recommended that clinicians consider the application of MPAP, especially in noncompliant Class II patients.

scholarly journals Impact of photobiomodulation and low-intensity pulsed ultrasound adjunctive interventions on orthodontic treatment duration during clear aligner therapy: A retrospective study

2021 ◽  
Author(s):  
Ra'ed Al-Dboush ◽  
Anahita Naseri Esfahani ◽  
Tarek El-Bialy
Keyword(s):  
Retrospective Study ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Total Duration ◽  
Control Group ◽  
Pulsed Ultrasound ◽  
Low Intensity Pulsed Ultrasound ◽  
Low Intensity ◽  
Significant Difference ◽  
Clear Aligner

ABSTRACT Objective To assess the efficiency of low-intensity pulsed ultrasound (LIPUS) and photobiomodulation (PBM) interventions in accelerating orthodontic tooth movement during clear aligner therapy (CAT). Materials and Methods This retrospective study was carried out on the records of 84 subjects who were treated using CAT. Twenty-eight patients were treated using CAT with a daily use of LIPUS for 20 minutes, 28 patients were treated using CAT with a daily use of PBM for 10 minutes, and 28 patients were treated using CAT alone. The total duration of treatment was recorded for all patients. One-way analysis of variance and post hoc Tukey test were used to assess whether there was any significant difference in total treatment duration among the three groups (P &lt; .05). Results The mean treatment durations in days were 719 ± 220, 533 ± 242, and 528 ± 323 for the control, LIPUS, and PBM groups, respectively. The LIPUS group showed a 26% reduction, on average, in treatment duration when compared with the control group, whereas the PBM group showed an average 26.6% reduction in the treatment duration when compared with the control group. The results showed that there were statistically significant differences among the groups (P = .011). Treatment durations were significantly reduced in the LIPUS and PBM groups as compared with the control (P = .027 and P = .023, respectively), with no statistically significant differences between the LIPUS and PBM groups (P = .998). Conclusions Daily use of LIPUS or PBM as adjunctive interventions during CAT could reduce the duration of orthodontic treatment.

scholarly journals The Effect of Genetic Polymorphisms on Treatment Duration Following Premolar Extraction

2021 ◽  
Author(s):  
Jiyon Yu ◽  
Yoon-Jeong Choi ◽  
Sung-Hwan Choi ◽  
Han-Sung Jung ◽  
Ji Hyun Lee ◽  
...  
Keyword(s):  
Genetic Polymorphisms ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Factors Affecting ◽  
Targeted Next Generation Sequencing ◽  
Premolar Extraction ◽  
Orthodontic Patients ◽  
Generation Sequencing

Abstract To elucidate genetic factors affecting orthodontic treatment duration, we employed targeted next-generation sequencing on DNA from the saliva of 117 patients undergoing orthodontic treatment after premolar extraction. The clinical characteristics of patients were summarized, and the association of clinical variables with treatment duration was assessed. Patients whose treatment duration deviated from the average were classified into an extreme long group or an extreme short group. We identified single nucleotide polymorphisms (SNPs) significantly enriched in the two groups via targeted sequencing. Nine SNPs (six genes) were significantly enriched in both groups. In the extreme long group, the frequency of the CC genotypes of WNT3A, SPP1 (rs4754, rs9138), and TNFSF11, the TT genotype of SPP1 (rs1126616), as well as the GG genotype of SFRP2 was significantly higher than in the short group. In the extreme short group, the TC genotype of SPP1, the AA genotype of P2RX7, the CT genotype of TNFSF11, and the AG genotype of TNFRSF11A tended to exhibit higher frequency than in the long group. Taken together, we identified genetic polymorphisms related to treatment duration in Korean orthodontic patients undergoing premolar extraction. Accurate prediction of the treatment period through further research will be of great aid to patients as well as orthodontists.

scholarly journals The effect of genetic polymorphisms on treatment duration following premolar extraction

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Jiyon Yu ◽  
Yoon Jeong Choi ◽  
Sung-Hwan Choi ◽  
Han-Sung Jung ◽  
Ji Hyun Lee ◽  
...  
Keyword(s):  
Genetic Polymorphisms ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Nucleotide Polymorphisms ◽  
Single Nucleotide ◽  
Factors Affecting ◽  
Targeted Next Generation Sequencing ◽  
Premolar Extraction ◽  
Orthodontic Patients ◽  
Generation Sequencing

AbstractTo elucidate genetic factors affecting orthodontic treatment duration, we employed targeted next-generation sequencing on DNA from the saliva of 117 patients undergoing orthodontic treatment after premolar extraction. The clinical characteristics of patients are summarized, and the association of clinical variables with treatment duration was assessed. Patients whose treatment duration deviated from the average were classified into an extreme long group or an extreme short group. We identified nine single nucleotide polymorphisms (SNPs) of six genes that significantly differed in the two groups via targeted sequencing. The frequency of the CC genotypes of WNT3A, SPP1 (rs4754, rs9138), and TNFSF11, TT genotype of SPP1 (rs1126616), and GG genotype of SFRP2 was significantly higher in the extreme long group than in the short group. In the extreme short group, the TC genotype of SPP1, AA genotype of P2RX7, CT genotype of TNFSF11, and AG genotype of TNFRSF11A tended to exhibit higher frequency than in the long group. Taken together, we identified genetic polymorphisms related to treatment duration in Korean orthodontic patients undergoing premolar extraction. Our findings could lead to further studies predicting the prolongation of the orthodontic treatment duration, and will be of great aid to patients as well as orthodontists.

scholarly journals Outcome assessment of lingual and labial appliances compared with cephalometric analysis, peer assessment rating, and objective grading system in Angle Class II extraction cases

2014 ◽  
Vol 85 (3) ◽  
pp. 400-407 ◽  
Author(s):  
Toru Deguchi ◽  
Fumie Terao ◽  
Tomo Aonuma ◽  
Tomoki Kataoka ◽  
Yasuyo Sugawara ◽  
...  
Keyword(s):  
Treatment Outcomes ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Peer Assessment ◽  
Class Ii ◽  
Grading System ◽  
Cephalometric Analysis ◽  
Significant Difference ◽  
Objective Grading System ◽  
Peer Assessment Rating

ABSTRACT Objective:  To validate our hypothesis that there would be significant differences in treatment outcomes, including cephalometric values, degree of root resorption, occlusal indices, and functional aspect, between cases treated with labial and lingual appliances. Materials and Methods:  Twenty-four consecutively treated Class II cases with extractions and lingual appliance were compared with 25 matched cases treated with extraction and labial appliance. Orthodontic treatment outcomes were evaluated by cephalometric analysis, peer assessment rating, and an objective grading system (OGS). Additionally, functional analysis was also performed in both groups after orthodontic treatment. Statistical comparison was performed using the Wilcoxon signed rank test within the groups, and the Mann-Whitney U-test was used to compare between the labial and lingual groups. Results:  The only significant difference between the groups was that the interincisal angle was larger in the lingual group than in the labial group. OGS evaluation showed that control over root angulation was significantly worse in the lingual group than in the labial group. There was no significant difference between groups in the amount of root resorption or in functional evaluation. Conclusions:  Generally, lingual appliances offer comparable treatment results to those obtained with labial appliances. However, care should be taken with lingual appliances because they are more prone to produce uprighted incisors and root angulation.

Relationship between treatment duration and outcomes in patients receiving concurrent chemoradiotherapy (CCRT) and surgery for locoregionally advanced (LRA) esophageal and gastroesophageal junction (E/GEJ) adenocarcinoma (ACA).

2012 ◽  
Vol 30 (15_suppl) ◽  
pp. e14665-e14665
Author(s):  
Michael J. McNamara ◽  
Lisa A. Rybicki ◽  
Thomas W. Rice ◽  
Cristina P. Rodriguez ◽  
Gregory M.M. Videtic ◽  
...  
Keyword(s):  
Treatment Duration ◽  
Recursive Partitioning ◽  
Gastroesophageal Junction ◽  
Cleveland Clinic ◽  
Prolonged Treatment ◽  
Rank Test ◽  
Short Treatment ◽  
Kaplan Meier ◽  
Before And After ◽  
Complete Treatment

e14665 Background: Retrospective studies in breast, colon, and head and neck cancer have suggested that delays in administration of adjuvant chemotherapy result in inferior outcomes. We explore this question in patients with LRA E/GEJ ACA. Methods: From 11/99 to 7/06, 152 patients with cT3, N1, or M1a disease were enrolled on one of two clinical trials at the Cleveland Clinic. Two courses of CCRT consisting of 30Gy radiation (@1.5Gy BID) with continuous infusion cisplatin (20mg/m2/day x 4 days) and 5Fu (1000mg/m2/d x 4 days) were given both before and after surgical resection. In the second trial, 75 patients also received gefitinib during the 4 week induction and for a total of two years postoperatively. Using recursive partitioning analysis (RPA), we retrospectively explored the relationship between treatment duration and loco-regional control (LRC), distant metastatic control (DMC), freedom from recurrence (FFR), and overall survival (OS) in the 115 patients (76%) who completed all treatment. Outcomes were estimated using the Kaplan-Meier method and compared among groups using the log-rank test. Results: RPA analysis identified three groups of patients: 19 patients in whom resection occurred ≤45 days from the start of CCRT to resection (short treatment), 63 patients who underwent resection >45 days from the start of CCRT and required <50 days to complete treatment after surgery (intermediate treatment), and 33 patients who underwent resection >45 days from the start of CCRT but required ≥50 days to complete treatment after surgery (prolonged treatment). With a median follow-up of 90 (range 57-126) months, we found that patients with shorter treatment times had better 5 year DMC [64% (short) v 26% (intermediate) v 16% (prolonged); p=0.004], FFR [57% (short) v 23% (intermediate) v 16% (prolonged); p=0.015)], and OS [42% (short) v 30% (intermediate) v 12% (prolonged); p=0.08]. LRC was not different between the groups. Conclusions: Treatment delays in patients receiving multimodality therapy for LRA E/GEJ ACA may result in a greater risk of recurrence and decreased survival.

scholarly journals Prevalence of White Spot Lesion in Nepalese Patients with Fixed Orthodontic Appliance

2013 ◽  
Vol 3 (2) ◽  
pp. 7-10
Author(s):  
Sandhya Shrestha ◽  
Rabindra Man Shrestha
Keyword(s):  
Treatment Duration ◽  
Orthodontic Treatment ◽  
White Spot ◽  
P Value ◽  
Orthodontic Appliances ◽  
White Spot Lesion ◽  
Male And Female ◽  
Fixed Orthodontic Appliances ◽  
Significant Difference ◽  
Orthodontic Patients

Introduction: Enamel decalcification in the form of white spot lesion is a common complication seen in patients with fixed orthodontic appliances. Objective: To determine the prevalence of white spot lesion among Nepalese fixed orthodontic patients, to compare the occurrence of WSL among the patients with lesser and greater duration of treatment, and to compare between the gender groups. Materials & Method: A cross-sectional study was done to compare the prevalence of WSL between 300 orthodontic patients and 100 non-orthodontic subjects. Further comparison was done between the mean treatment duration between orthodontic subjects of 6-18 months and >18 months, and between male and female samples. Subjects were visually examined on second premolar to second premolar in both maxillary and mandibular arches using Gorelick’s WSL index. Descriptive statistics were calculated and independent t-test was used to compare the difference between the groups. The p-value <0.05 was considered significant. Result: The prevalence of WSL in Nepalese orthodontic patients was 54.3%; among them prevalence was 40% in lesser treatment duration group and 68.7% in greater treatment duration group. The study found significant difference between untreated nonorthodontic group and orthodontically treated group with respect to the number of teeth affected with WSL. Also, there was significant difference between the categories of orthodontic treatment duration. There was no significant difference between male and female samples. Conclusion: Fixed orthodontic treatment increase the risk of white spot lesion. Duration of orthodontic treatment also showed significant increase in the occurrence of WSL.  

scholarly journals Post orthodontic treatment stability measurement in dentoskeletal class I malocclusion based on the objective grading system index

2011 ◽  
Vol 23 (1) ◽  
Author(s):  
Bernard Anthony Pasaribu ◽  
Bergman Thahar ◽  
Jono Salim ◽  
Endah Mardiati
Keyword(s):  
Orthodontic Treatment ◽  
Class I ◽  
Treatment Result ◽  
Rank Test ◽  
Grading System ◽  
Significant Difference ◽  
Objective Grading System ◽  
Stability Measurement ◽  
The Difference ◽  
The Stability

The purpose of this study was to examine the stability of orthodontic treatment results in dentoskeletal class I malocclusion treated with and without extraction of four premolars and to compare the stability of treatment result between those groups. Occlusal relationship after treatment and six-month post retention were measured on dental cast using The Objective Grading System Index at Orthodontic Specialist Clinic, Faculty of Dentistry Universitas Padjadjaran. The analytic descriptive study was carried out on 30 samples that comprised 14 samples were treated without extraction of four premolars and 16 samples were treated with extraction of four premolars. ABO Measuring Gauge was used to measure seven variables: tooth alignment, the height of the marginal ridges, buccolingual inclination, occlusal relationships, occlusal contacts, overjet, and interproximal tooth contacts. The results were statistically analyzed with the Wilcoxon rank test to test the difference of The Objective Grading System Index between posttreatment and postretension. Mann-Whitney U test was applied to determine the difference between the group with the extraction of four premolars and the group without extraction of four premolars. The level of significance was set at 0.05. The results of this study showed these following variables: tooth alignment, occlusal contacts, and overjet were unstable at the group with the extraction of four premolars, while only tooth alignment was found to be unstable in the group without extraction of the four premolars. Mann-Whitney U test did not show statistically significant difference in stability comparison test between the groups.

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