scholarly journals Comparison of temporary anchorage devices and transpalatal arch-mediated anchorage reinforcement during canine retraction

2016 ◽  
Vol 10 (04) ◽  
pp. 512-516 ◽  
Author(s):  
Defne Kecik
Keyword(s):  
Vertical Movement ◽  
Premolar Extraction ◽  
Canine Retraction ◽  
Temporary Anchorage Devices ◽  
Attached Gingiva ◽  
Molar Teeth ◽  
Skeletal Effects ◽  
Bimaxillary Protrusion ◽  
Transpalatal Arch ◽  
Extraction Treatment

ABSTRACT Objective: The purpose of this study was to compare the dental and skeletal effects of canine retraction using conventional anchorage reinforcement systems and comparing them with the usage of TADs. Materials and Methods: The sample consisted of 50 patients having Class I malocclusions with bimaxillary protrusion indicated for first premolar extraction, and allocated into two groups. The first group consisted of 25 patients with a mean age of 18,7 years (min:14, max:22 years, 16 girls and 9 boys) that TADs were applied as an anchorage mechanic between attached gingiva of upper second premolar and first molar teeth. The second group consisted of 25 patients with a mean age of 19,4 years (min:15, max:23 years, 14 girls and 11 boys) that conventional molar anchorage with Transpalatal arch (TPA) was applied for the anchorage mechanics against canine retraction. Results: The results showed that mean mesial movement and the tipping of the first molars in TAD group between T0 - T1 were insignificant (P > 0,05), however in the TPA group were significant (P<0,01). Vertical movement of the molars were not significant when two groups were compared (P>0,05). Conclusion: Although TPA is a useful appliance, it doesn't provide an effective anchorage control on anteroposterior movement maxillary first molar teeth concerning first premolar extraction treatment. TADs are more convenient to provide absolute anchorage during maxillary canine retraction in contrast to transpalatal arch.

scholarly journals Various methods of canine retraction in premolar extraction space: A case series

2021 ◽  
Vol 7 (4) ◽  
pp. 310-315
Author(s):  
Neeteesh K Shukla ◽  
Shivam Verma ◽  
Parnita Dwivedi ◽  
Nimmi Gupta ◽  
Sneha Singh
Keyword(s):  
Case Series ◽  
Invasive Procedures ◽  
Maxillary Canine ◽  
Premolar Extraction ◽  
Canine Retraction ◽  
Temporary Anchorage Devices ◽  
Anchorage Loss

Following article is the review and presentation of various methodologies of canine retraction [e.g.– methods under sliding and friction less mechanics, facilitation with TADs (Temporary Anchorage Devices) and MOPs (Micro-Osteo-Perforations), and invasive procedures etc.] and comparison of these methods in terms of rate of canine retraction, and molar anchorage loss. Patient’s age ranges between 15y to 19y and only right maxillary canine was taken for comparison purpose.

scholarly journals Anchorage condition during canine retraction using transpalatal arch with continuous and segmented arch mechanics

2015 ◽  
Vol 86 (3) ◽  
pp. 380-385 ◽  
Author(s):  
Adel Alhadlaq ◽  
Thamer Alkhadra ◽  
Tarek El-Bialy
Keyword(s):  
Orthodontic Treatment ◽  
The Other ◽  
Cephalometric Analysis ◽  
Forward Movement ◽  
Maxillary Canine ◽  
Premolar Extraction ◽  
Canine Retraction ◽  
Before And After ◽  
Point Data ◽  
Transpalatal Arch

ABSTRACT Objective:  To compare anchorage condition in cases in which transpalatal arch was used to enhance anchorage in both continuous and segmented arch techniques. Materials and Methods:  Twenty cases that required first premolar extraction for orthodontic treatment and transpalatal arch to enhance anchorage were included in this study. Ten cases were treated using the continuous arch technique, while the other 10 cases were treated using 0.019 × 0.025-inch TMA T-loops with posterior anchorage bend according to the Burstone and Marcotte description. Lateral cephalometric analysis of before and after canine retraction was performed using Ricketts analysis to measure the anteroposterior position of the upper first molar to the vertical line from the Pt point. Data were analyzed using an independent sample t-test. Results:  There was a statistically significant forward movement of the upper first molar in cases treated by continuous arch mechanics (4.5 ± 3.0 mm) compared with segmented arch mechanics (−0.7 ± 1.4 mm; P  =  .01). Conclusions:  The posterior anchorage bend to T-loop used to retract the maxillary canine can enhance anchorage during maxillary canine retraction.

scholarly journals Evaluation of Periodontal Changes Adjacent to Extraction Sites during Upper Canine Retraction

2017 ◽  
Vol 18 (2) ◽  
pp. 117-125
Author(s):  
Azzam Al-Jundi ◽  
Basem Al Sabbagh ◽  
Jagan K Baskaradoss
Keyword(s):  
Soft Tissues ◽  
Alveolar Bone ◽  
Tooth Movement ◽  
Orthodontic Tooth Movement ◽  
Premolar Extraction ◽  
Canine Retraction ◽  
Orthodontic Therapy ◽  
Extraction Site ◽  
Significant Movement ◽  
Attached Gingiva

ABSTRACT Introduction There is an intimate relationship between orthodontic therapy and the periodontal changes that occur during tooth movement. Materials and methods This prospective clinical trial aims at investigating the movement of both the free and attached gingiva, as well as the movement of the alveolar bone in the extraction site of the upper 1st premolars during the retraction of the upper canines. In this study, 17 patients (10 female, 7 male) requiring 1st premolar extraction before orthodontic tooth movement were selected and treated at the Department of Orthodontics in the Faculty of Dentistry in University of Hama, Hama, Syria. The upper 1st premolars were extracted, and the implant AutoTacs were applied on the alveolar bone afterward. Then, measurements between the center of the implant AutoTacs and the L-shape wire were taken, utilizing digital Vernier caliper. After 3 weeks of extraction, tattooing marked points were placed on the free and the attached gingival, and the measurements were taken using the same digital Vernier caliper. Closed coil springs made of nickel-titanium were used to retract the upper canines, and a force of 150 gm was applied. Results The results of this study showed significant differences between the movement of both the free and attached gingiva and the movement of the corresponding upper canines (p < 0.001). The movement of the free gingiva had formed about 77% of the amount of the movement of the upper canine retraction. No significant differences were detected between the place of implant AutoTac X1 and the L-shaped wire (W) during the retraction of the upper canine. On the contrary, significant differences were noticed between the place of implant AutoTac X2 and the L-shaped wire (W) during the retraction of the upper canine (p < 0.001). Conclusion There is significant movement of hard and soft tissues during and after premolar extraction and orthodontic therapy. Clinical significance The movement of supporting tissues of the teeth along with the alveolar bone during canine retraction is an important biological characteristic of the orthodontic tooth movement. Clinicians need to understand the role and importance of the supporting tissues during orthodontic treatment, which needs to be incorporated into their routine clinical evaluations. How to cite this article Al-Jundi A, Al Sabbagh B, Baskaradoss JK. Evaluation of Periodontal Changes Adjacent to Extraction Sites during Upper Canine Retraction. J Contemp Dent Pract 2017;18(2):117-125.

scholarly journals Effectiveness of orthodontic temporary anchorage devices in canine retraction and anchorage preservation during the two-step technique: a systematic review and meta-analysis

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Haonan Tian ◽  
Congman Xie ◽  
Min Lin ◽  
Hongmei Yang ◽  
Aishu Ren
Keyword(s):  
Systematic Review ◽  
Meta Analysis ◽  
Risk Of Bias ◽  
Controlled Trials ◽  
Cochrane Central Register ◽  
Canine Retraction ◽  
Temporary Anchorage Devices ◽  
The Mean ◽  
Mean Differences ◽  
Implant Anchorage

Abstract Background Temporary anchorage devices have been used for decades in orthodontic practice for many applications. The aim of this systematic review was to assess the effectiveness of orthodontic temporary anchorage devices in canine retraction during the two-step technique. Methods A search was systematically performed for articles published prior to June 30, 2019 in five electronic databases (PubMed, Embase, Cochrane Central Register of Controlled Trials, Web of Science, Scopus). The risk of bias was assessed using the Cochrane risk of bias tool for randomized controlled trials (RCTs) and the risk of bias in nonrandomized studies of interventions (ROBINS-I) tool for controlled clinical trials (CCTs). The Grading of Recommendation, Assessment, Development and Evaluation (GRADE) approach was used for the quality assessment. Data concerning the mean difference in mesial molar movement and extent of canine retraction were extracted for statistical analysis. The mean differences and 95% confidence intervals were analyzed for continuous data. A meta-analysis with a random-effects model for comparable outcomes was carried out. Results Three RCTs and five CCTs were finally included. Meta-analysis showed a significant increase not only in anchorage preservation in the implant anchorage group in both the maxilla (1.56 mm, 95% CI: 1.14 to 1.98, P < 0.00001) and the mandible (1.62 mm, 95% CI: 1.24 to 2.01, P < 0.00001) but also in canine retraction in the implant anchorage group in both the maxilla (0.43 mm, 95% CI: 0.16 to 0.69, P = 0.001) and the mandible (0.26 mm, 95% CI: 0.02 to 0.49, P = 0.03). Conclusions There is very low-quality evidence showing that implant anchorage is more efficient than conventional anchorage during canine retraction. Additional high-quality studies are needed.

scholarly journals Bimaxillary protrusion and gummy smile treated with clear aligners: Closing premolar extraction spaces with bone screw anchorage

2020 ◽  
Vol 10 ◽  
pp. 120-131
Author(s):  
Lexie Y Lin ◽  
Chris H Chang ◽  
W. Eugene Roberts
Keyword(s):  
Treatment Plan ◽  
Current Case ◽  
Anterior Crowding ◽  
Excellent Outcome ◽  
Premolar Extraction ◽  
Treatment Analysis ◽  
Anterior Segments ◽  
Clear Aligner ◽  
Bimaxillary Protrusion ◽  
Gummy Smile

Inadequate posterior anchorage is a serious limitation for aligner treatment involving extraction of four first premolars. Inappropriate axial inclinations may compromise intermaxillary occlusion and stability. OrthoBoneScrew® (OBS) anchorage is designed to augment the Invisalign® clear aligner G6 solution to produce more predictable outcomes as illustrated by the current case report. An 18-year-old female presented with two chief complains: (1) Protrusive, incompetent lips, and (2) excessive gingival exposure when smiling (“gummy smile”). Clinical evaluation revealed bimaxillary protrusion, hypermentalis activity, anterior crowding, and excessive anterior axial inclinations, particularly of the lower incisors (116°). The American Board of Orthodontic (ABO) discrepancy index (DI) was 21. The treatment plan was extraction of all four first premolars, and clear aligner (Invisalign®) therapy anchored with four OBSs: Infra-zygomatic crest (IZC), and between the roots of the upper central and lateral incisors (Incisal) bilaterally. Eighteen months of initial treatment with 45 aligners retracted and intruded the anterior segments in both arches by closing the extraction spaces with supplemental anchorage provided by IZC and Incisal OBSs. The final series of 20 refinement aligners achieved an excellent outcome as evidenced by an ABO cast-radiograph evaluation (CRE) score of 10, and a pink and white (P&W) dental esthetic score of 3. Post-treatment analysis revealed multiple opportunities for improvement. The patient was well satisfied with the final outcome.

scholarly journals En masse retraction versus two-step retraction of anterior teeth in extraction treatment of bimaxillary protrusion

2013 ◽  
Vol 2 (1) ◽  
pp. 28 ◽  
Author(s):  
NayefH Felemban ◽  
AliH Hassan ◽  
ZuhairA Murshid ◽  
FahadF Al-Sulaimani
Keyword(s):  
Anterior Teeth ◽  
Bimaxillary Protrusion ◽  
En Masse Retraction ◽  
Extraction Treatment

scholarly journals Prevalence of Lip Competency among Nepalese Adolescents with different Ethnic group of Kathmandu Valley

2019 ◽  
Vol 9 (1) ◽  
pp. 45-49
Author(s):  
Rajiv Yadav ◽  
Neelam Yadav ◽  
Prem Basel
Keyword(s):  
Ethnic Group ◽  
Analysis Data ◽  
Kathmandu Valley ◽  
Chi Square ◽  
Cross Sectional ◽  
Deep Bite ◽  
Premolar Extraction ◽  
Anterior Teeth ◽  
Study Population ◽  
Bimaxillary Protrusion

Introduction: Esthetic is one of the outcome that is expected from orthodontic treatment. In orthodontic practice, lip protrusion has been observed with proclined upper and lower incisors in bimaxillary protrusion. Such lip protrusion has been shown to be reduced with backward movement of the anterior teeth, which often accompanies premolar extraction. Hence the aim of our study is to find out prevalence of lip competency among Nepalese Adolescents with different ethnic group of Kathmandu valley. Materials & Method: lt is a cross-sectional descriptive study. The study population included 14-18 year-old adolescents studying in high school of all three districts of Kathmandu Valley. An evaluation form was developed categorizing different levels of deep bite following WHO guidelines 1985 and accordingly data were recorded on it. Statistical Analysis: Data were analyzed with descriptive statistics using the Statistical Package for the Social Sciences (SPSS for Windows, Version 23) in which p-values were calculated by Pearson Chi-Square Tests. Result: Out of 935 screened students, 89.6% had competent lips and 10.4% had Incompetent lips. Female showed 91.9% of competent lips and 8.1% of incompetent lips. Male showed 87.8% of competent lips and 12.2% of incompetent lips. Among different ethnic group for lip competency, Advasi/Tharu showed 0.2%, Brahmin/chettri showed 61.6%, Dalit showed 0.6, janajati- Hi showed 35.8%, Madhesi showed 0.7%,Muslim showed 0.6% and others showed 0.3%. Among Brahmin/chettri 56.4% showed competent lips, 5.22% showed incompetent lips. However among Janajati-Hi 30.7% showed competent lips, 5.12% showed incompetent lips. Conclusion: The Prevalence of competent lips was 89.6% and incompetent lips was 10.4%. Among Genders both female and male showed higher percent of competent lips than incompetent lips. However competent lips were more associated with females. Among ethnic groups , Brahmin/chhetri have 61.6% of lip competency whereas Janajati-Hi have 35.8%. Rest of the ethnic group have less than 1% of lip competency. Among Brahmin/chettri 56.4% have competent lips, 5.22% have incompetent lips where as Janajati-Hi 30.7% have competent lips, 5.12% have incompetent lips.

scholarly journals Velocity of Canine Retraction in Angle Class I Treated with First Premolar Extraction: Effect of Facial Pattern

2015 ◽  
Vol 56 (3) ◽  
pp. 145-151
Author(s):  
Yu Nakamura ◽  
Yoriko Toyodome ◽  
Takenobu Ishii ◽  
Teruo Sakamoto ◽  
Etsuko Motegi ◽  
...  
Keyword(s):  
Class I ◽  
Premolar Extraction ◽  
Canine Retraction ◽  
Angle Class ◽  
Facial Pattern

Effects of unilateral premolar extraction treatment on the dental arch forms of Class II subdivision malocclusions

2017 ◽  
Vol 152 (2) ◽  
pp. 232-241 ◽  
Author(s):  
Ginu Dahiya ◽  
Ahmed I. Masoud ◽  
Grace Viana ◽  
Ales Obrez ◽  
Budi Kusnoto ◽  
...  
Keyword(s):  
Class Ii ◽  
Dental Arch ◽  
Premolar Extraction ◽  
Arch Forms ◽  
Extraction Treatment
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