scholarly journals Air-powder polishing on self-ligating brackets after clinical use: effects on debris levels

2016 ◽  
Vol 21 (5) ◽  
pp. 90-94 ◽  
Author(s):  
Mônica L. S. Castro Aragón ◽  
◽  
Leandro Santiago Lima ◽  
David Normando ◽  
◽  
...  
Keyword(s):  
Sodium Bicarbonate ◽  
Orthodontic Treatment ◽  
Orthodontic Brackets ◽  
Wilcoxon Test ◽  
Clinical Use ◽  
Orthodontic Wire ◽  
Conventional Brackets ◽  
Ceramic Brackets ◽  
Main Factors

ABSTRACT Introduction: Debris buildup on brackets and arch surfaces is one of the main factors that can influence the intensity of friction between bracket and orthodontic wire. Objective: This study sought to evaluate the effect of air-powder polishing cleaning on debris levels of self-ligating ceramic brackets at the end of orthodontic treatment, compared to the behavior of conventional brackets. Methods: Debris levels were evaluated in metal conventional orthodontic brackets (n = 42) and ceramic self-ligating brackets (n = 42) on canines and premolars, arranged in pairs. There were brackets with and without air-powder polishing. At the end of orthodontic treatment, a hemiarch served as control and the contralateral hemiarch underwent prophylaxis with air-powder polishing. Debris buildup in bracket slots was assessed through images, and Wilcoxon test was used to analyze the results. Results: The median debris levels were statistically lower in the conventional metal brackets compared to self-ligating ones (p = 0.02), regarding brackets not submitted to air-powder polishing. Polishing significantly reduced debris buildup to zero in both systems, without differences between groups. Conclusions: Ceramic self-ligating brackets have a higher debris buildup in comparison to conventional metal brackets in vivo, but prophylaxis with sodium bicarbonate jet was effective in reducing debris levels in self-ligating and also in conventional brackets.

scholarly journals Cleansing orthodontic brackets with air-powder polishing: effects on frictional force and degree of debris

2016 ◽  
Vol 21 (4) ◽  
pp. 60-65 ◽  
Author(s):  
Brisa dos Santos Leite ◽  
Nathalia Carolina Fernandes Fagundes ◽  
Mônica Lídia Castro Aragón ◽  
Carmen Gilda Barroso Tavares Dias ◽  
David Normando
Keyword(s):  
Image Analysis ◽  
Comparative Analysis ◽  
Frictional Force ◽  
Orthodontic Treatment ◽  
Orthodontic Brackets ◽  
Wilcoxon Test ◽  
Control Group ◽  
And Control ◽  
Sliding Mechanics ◽  
Control Surfaces

ABSTRACT Introduction: Debris buildup on the bracket-wire interface can influence friction. Cleansing brackets with air-powder polishing can affect this process. Objective: The aim of this study was to evaluate the frictional force and amount of debris remaining on orthodontic brackets subjected to prophylaxis with air-powder polishing. Methods: Frictional force and debris buildup on the surface of 28 premolar brackets were evaluated after orthodontic treatment. In one hemiarch, each bracket was subjected to air-powder polishing (n = 14) for five seconds, while the contralateral hemiarch (n = 14) served as control. Mechanical friction tests were performed and images of the polished bracket surfaces and control surfaces were examined. Wilcoxon test was applied for comparative analysis between hemiarches at p < 0.05. Results: Brackets that had been cleaned with air-powder polishing showed lower friction (median = 1.27 N) when compared to the control surfaces (median = 4.52 N) (p < 0.01). Image analysis showed that the control group exhibited greater debris buildup (median = 2.0) compared with the group that received prophylaxis with air-powder polishing (median = 0.5) (p < 0.05). Conclusion: Cleansing orthodontic brackets with air-powder polishing significantly reduces debris buildup on the bracket surface while decreasing friction levels observed during sliding mechanics.

scholarly journals Factors Affecting the Shear Bond Strength of Orthodontic Brackets – a Review of In Vitro Studies

2015 ◽  
Vol 58 (2) ◽  
pp. 43-48 ◽  
Author(s):  
Waleed Bakhadher ◽  
Hassan Halawany ◽  
Nabeel Talic ◽  
Nimmi Abraham ◽  
Vimal Jacob
Keyword(s):  
Bond Strength ◽  
Shear Bond Strength ◽  
Positive Influence ◽  
Orthodontic Brackets ◽  
Factors Affecting ◽  
Bonding System ◽  
Ceramic Brackets ◽  
Bonding Systems

The adhesive material used to bond orthodontic brackets to teeth should neither fail during the treatment period, resulting in treatment delays, untoward expenses or patient inconvenience nor should it damage the enamel on debonding at the end of the treatment. Although the effectiveness of a bonding system and any unfavorable effects on the enamel may be studied by conductingin-vivostudies, it is nearly impossible to independently analyze different variables that influence a specific bonding system in the oral environment.In-vitrostudies, on the other hand, may utilize more standardized protocols for testing different bonding systems and materials available. Thus, the present review focused attention onin-vitrostudies and made an attempt to discuss material-related, teeth-related (fluorotic vs non-fluorotic teeth) and other miscellaneous factors that influences the shear bond strength of orthodontic brackets. Within the limitations of this review, using conventional acid-etch technique, ceramic brackets and bonding to non-fluorotic teeth was reported to have a positive influence on the shear bond strength of orthodontic brackets, but higher shear bond strength found on using ceramic brackets can be dangerous for the enamel.

scholarly journals In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study

2017 ◽  
Vol 18 (12) ◽  
pp. 1181-1184
Author(s):  
Manish Goutam ◽  
Divya Iska ◽  
Madhvi Singh ◽  
Rajkiran Chitumalla ◽  
Sai C Bala Balasubramanian
Keyword(s):  
Bond Strength ◽  
Comparative Study ◽  
Root Canal ◽  
Shear Bond Strength ◽  
Orthodontic Treatment ◽  
Orthodontic Brackets ◽  
Tooth Surface ◽  
Sodium Perborate ◽  
Ceramic Brackets

ABSTRACT Introduction Esthetics is one of the common issues because of which patients consult dental orthodontic treatment. Two ways of tooth bleaching are available these days, which includes in-office bleach and home bleach. Various bleaching protocols are available these days for treating the tooth surfaces. Hence, we planned the present study for investigating the impact of various intracoronal bleaching protocols on shear bond strength of ceramic brackets bonded to tooth surface after bleaching. Materials and methods The present study included assessment of 100 extracted maxillary central incisors with the integrated buccal surface. A resin block was made and individual teeth were embedded in each block. Root canal therapy procedure was performed in all the teeth, after which 2 mm short of tooth apex up to the level of cementoenamel junction, removal of the root canal filling was done. All the samples were broadly divided into four study groups with 25 samples in each group. Bleaching procedure was carried in all the samples intracoronally followed by testing of shear bond strength using universal force testing machine. Following the modified adhesive remnant index (AI), assessment of remaining adhesive on the brackets was done. All the results were compiled and analyzed by Statistical Package for the Social Sciences (SPSS) software version 17.0. Results In the control group, mean shear bond strength was found to be 17.9 MPa. While comparing the carbamide peroxide (CP) group with sodium perborate study group, we observed a statistically significant difference. Nonsignificant results were obtained while comparing the shear bond strength in between sodium perborate group and hydrogen peroxide (HP) group. Conclusion Intracoronal bleaching does affect the shear bond strength of ceramic brackets. Sodium perborate bleaching influences shear bond strength more strongly than other bleaching agents such as CP and HP. Clinical significance In patients undergoing orthodontic treatment, HP is a preferred agent where bleaching has to be followed by orthodontic bonding to the tooth surface. How to cite this article Iska D, Devanna R, Singh M, Chitumalla R, Balasubramanian SCB, Goutam M. In vitro Assessment of Influence of Various Bleaching Protocols on the Strength of Ceramic Orthodontic Brackets bonded to Bleached Tooth Surface: A Comparative Study. J Contemp Dent Pract 2017;18(12): 1181-1184.

scholarly journals Pengaruh Kloroform Terhadap Pelarutan Bahan Perekat Yang Menempel Pada Braket Keramik Yang Lepas Dari Gigi

2021 ◽  
Vol 6 (1) ◽  
pp. 9-18
Author(s):  
Ken Edinata ◽  
Endah Mardiati
Keyword(s):  
Shear Strength ◽  
Orthodontic Treatment ◽  
Testing Machine ◽  
Wilcoxon Test ◽  
Comparative Approach ◽  
Universal Testing Machine ◽  
Universal Testing ◽  
Ceramic Brackets ◽  
Ceramic Bracket

ABSTRAK Kebutuhan braket transparan pada perawatan ortodonti semakin berkembang dengan adanya kebutuhan braket sewarna gigi, terutama wanita yang memerlukan penampilan estetik maksimal. Braket yang lepas dalam perawatan ortodonti perlu direkatkan kembali. Pembersihan landasan braket yang terlepas sehingga dapat direkatkan kembali akan mengurangi biaya yang harus dikeluarkan pasien. Melakukan daur ulang braket haruslah dapatdapat dilakukan tanpa merubah sifat fisik dan ukuran dari braket tersebut. Penelitian ini adalah penelitian eksperimental analitik laboratoris in vitro dengan pendekatan komparatif yang bertujuan untuk melihat perbedaan kuat rekat geser braket keramik yang dibersihkan dengan kloroform selama 20 menit, 40 menit, 60 menit. Sampel yang digunakan dalam penelitian ini adalah 60 buah braket keramik monokristalin  merek Ice Inspire dari Ormco dengan perlekatan mekanik. Pengukuran uji rekat geser menggunakan Instron Universal Testing Machine dan sisa resin menggunakan skor ARI. Analisis statistik dilakukan dengan uji Wilcoxon dan ANOVA. Hasil penelitian menunjukkan terdapat perbedaan bermakna kuat rekat geser braket keramik pasca rekat yang dibersihkan dengan kloroform selama 20 menit, 40 menit, 60 menit dan braket keramik pascarekat yang baru. Simpulan dari penelitian ini bahwa Terdapat perbedaan kuat rekat geser braket keramik yang dibersihkan dengan kloroform selama 20 menit, 40 menit, 60 menit dengan braket keramik yang baru, Semakin lama waktu pembersihan braket keramik dengan kloroform, sisa resin adhesif akan semakin bersih dan mempunyai kuat rekat geser yang lebih tinggi. Terdapat perbedaan sisa resin adesif antara braket keramik pasca rekat yang dibersihkan dengan kloroform yang dilepas kembali dengan braket keramik pasca rekat yang baru.   Kata Kunci : perbedaan kuat rekat geser, kloroform, kuat rekat geser, ARI, braket keramik.                                                                                                    ABSTRACT Transparant bracket needs in orthodontic treatment is become huge caused the needs of tranlucent bracket , especially women who require maximum aesthetic appearance. Debonding bracket in orthodontic treatment need  to reattached.  By Cleaning mesh of bracket so it can be reattached to reduce patient costs . Recycling bracket must can done without changing the physical properties and the size of bracket. This study is an experimental study in vitro analytical comparative approach that aims to see the difference shear strength adhesion to ceramic brackets were cleaned with chloroform for 20 minutes , 40 minutes , 60 minutes . The sample used in this study were 60 pieces of ceramic bracket monokristalin from Ormco Inspire Ice with mechanical retention. Measurement of shear strength test using the Instron Universal Testing Machine and the rest of the resin using ARI scores . Statistical analysis was used  with Wilcoxon test and ANOVA . The results showed there were significant differences in the bracket shear strength rebonding ceramic bracket, which cleaned with chloroform for 20 minutes , 40 minutes , 60 minutes and new rebonding ceramic bracket. Conclusions from this research that There is a difference in the shear strength ceramic brackets  which cleaned using chloroform for 20 minutes , 40 minutes , 60 minutes and with a new ceramic bracket , the longer time cleaning ceramic bracket with chloroform, the rest of the adhesive resin will be clean and have strong adhesion higher shear. There are differences between the residual resin adhesive after adhesive ceramic bracket cleaned with chloroform is released back and the ceramic new bracket rebonding. Key words : 

scholarly journals Debris and friction of self-ligating and conventional orthodontic brackets after clinical use

2014 ◽  
Vol 85 (4) ◽  
pp. 673-677 ◽  
Author(s):  
Raíssa Costa Araújo ◽  
Lívia Monteiro Bichara ◽  
Adriana Monteiro de Araujo ◽  
David Normando
Keyword(s):  
Frictional Force ◽  
The Self ◽  
Orthodontic Brackets ◽  
Rank Test ◽  
Clinical Use ◽  
Clinical Exposure ◽  
Debris Accumulation ◽  
Before And After ◽  
Conventional Brackets ◽  
Signed Rank Test

ABSTRACT Objective:  To compare the degree of debris and friction of conventional and self-ligating orthodontic brackets before and after clinical use. Materials and Methods:  Two sets of three conventional and self-ligating brackets were bonded from the first molar to the first premolar in eight individuals, for a total of 16 sets per type of brackets. A passive segment of 0.019 × 0.025-inch stainless steel archwire was inserted into each group of brackets. Frictional force and debris level were evaluated as received and after 8 weeks of intraoral exposure. Two-way analysis of variance and Wilcoxon signed-rank test were applied at P &lt; .05. Results:  After the intraoral exposure, there was a significant increase of debris accumulation in both systems of brackets (P &lt; .05). However, the self-ligating brackets showed a higher amount of debris compared with the conventional brackets. The frictional force in conventional brackets was significantly higher when compared with self-ligating brackets before clinical use (P &lt; .001). Clinical exposure for 8 weeks provided a significant increase of friction (P &lt; .001) on both systems. In the self-ligating system, the mean of friction increase was 0.21 N (191%), while 0.52 N (47.2%) was observed for the conventional system. Conclusion:  Self-ligating and conventional brackets, when exposed to the intraoral environment, showed a significant increase in frictional force during the sliding mechanics. Debris accumulation was higher for the self-ligating system.

scholarly journals Orthodontic Bonding: Review of the Literature

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Ali H. Alzainal ◽  
Ahmed Shehab Majud ◽  
Abdulfatah M. Al-Ani ◽  
Adil O. Mageet
Keyword(s):  
Orthophosphoric Acid ◽  
Orthodontic Brackets ◽  
In Vivo Studies ◽  
Air Abrasion ◽  
Laser Etching ◽  
Current Standard ◽  
Orthodontic Bracket ◽  
Ceramic Brackets

Background. Patients seeking orthodontic treatment are increasing, and clinicians often have to place brackets on various surfaces aside from enamel. It is crucial to know what materials or instruments are required to bond brackets to each surface. Objective. This study aims to serve as a clinical guideline for the safest and most effective approaches taken to condition various surfaces for bonding to orthodontic brackets and provide background knowledge on the subject. Materials and Methods. PubMed and EBSCO databases were searched, along with the use of Google Scholar search engine, to obtain relevant articles published in English in peer-reviewed journals, from 1955 to 2020. Keywords used were Shear bond strength; Orthodontic bracket; Base design; Etching; Sandblasting; Laser; Conditioning; Enamel; Ceramic; Porcelain; Gold; Amalgam; Composite. Conclusion. Even though orthophosphoric acid is the most widely used enamel conditioning agent, laser etching should be considered to avoid enamel decalcification. Hydrofluoric acid is the current standard for ceramic conditioning; however, its use intraorally should be minimized due to its toxicity. Orthophosphoric acid, CoJet-Sand air abrasion, and laser etching are viable alternatives for conditioning ceramic. Monobond Etch & Prime is toxic and should not be used intraorally. Composite can be conditioned by bur roughening, and the use of ceramic brackets is recommended. Amalgam and gold surfaces can be conditioned adequately by air abrasion. Despite the claims of many authors, the maximum shear forces that orthodontic brackets are subjected to are not 6–8 mega pascal (MPa). Further investigation is required in that regard. More in vivo studies need to be performed to confirm the in vitro results.

scholarly journals Effects of adhesive flash-free brackets on debonding pain and time: A randomized split-mouth clinical trial

2020 ◽  
Vol 90 (6) ◽  
pp. 758-765
Author(s):  
Serpil Çokakoğlu ◽  
Ayten Tan
Keyword(s):  
Wilcoxon Test ◽  
Tooth Surface ◽  
Removal Time ◽  
Pain Scores ◽  
Lower Pain ◽  
Conventional Brackets ◽  
Ceramic Brackets ◽  
The Times ◽  
The Right ◽  
Adhesive Removal

ABSTRACT Objectives To evaluate the effects of adhesive precoated (APC) flash-free brackets on the level of pain, amount of remnant adhesive, and removal time during the debonding procedure. Materials and Methods Thirty patients (20 female, 10 male) aged 12 to 18 years undergoing nonextraction fixed orthodontic treatment were included in this study. APC flash-free and conventional ceramic brackets were bonded with a split-mouth study design. Bracket types were randomly allocated to quadrants. During the removal of the brackets, the visual analogue scale (VAS) was used to assess the level of pain for each tooth. The adhesive remnant index (ARI) was used to determine the amount of adhesive remaining on the tooth surface. Adhesive removal times were calculated per quadrant. The data were analyzed using the Wilcoxon test for comparisons between groups. Results Pain scores were generally higher for the conventional group than for the flash-free group. There were no differences in VAS scores across most tooth types during debonding. Overall, ARI results showed more adhesive remnants in the conventional bracket group (P &lt; .001). Except for the right maxillary quadrant, the times required to remove the adhesive were significantly longer for the flash-free brackets than the conventional brackets (P ≤ .005). Conclusions Although removal time was slightly longer for the flash-free adhesive than for the conventional adhesive, lower pain scores were generally observed for the flash-free adhesive brackets during the debonding procedure. Both time and pain differences could be considered clinically insignificant.

scholarly journals Effect of 0.12% chlorhexidine in reducing microorganisms found in aerosol used for dental prophylaxis of patients submitted to fixed orthodontic treatment

2014 ◽  
Vol 19 (3) ◽  
pp. 95-101 ◽  
Author(s):  
Isis Rodrigues Menezes dos Santos ◽  
Ana Cristina Azevedo Moreira ◽  
Myrela Galvão Cardoso Costa ◽  
Marcelo de Castellucci e Barbosa
Keyword(s):  
Sodium Bicarbonate ◽  
Orthodontic Treatment ◽  
Microbiological Analysis ◽  
Air Contamination ◽  
Dental Prophylaxis ◽  
Colony Forming Units ◽  
Prior Use ◽  
Two Phases ◽  
Student’S T

OBJECTIVE: This study aimed at assessing, in vivo, whether the prior use of 0.12% chlorhexidine as mouthwash would decrease air contamination caused by aerosolized sodium bicarbonate during dental prophylaxis. The study was conducted with 23 patients aged between 10 and 40 years old who were randomly selected and undergoing fixed orthodontic treatment. METHODS: The study was divided into two phases (T1 and T2) with a 30-day interval in between. In both phases, dental prophylaxis was performed with aerosolized sodium bicarbonate jetted to the upper and lower arches for 4 minutes. In T1, 10 minutes before the prophylaxis procedure, the participants used distilled water as mouthwash for one minute; whereas in T2, mouthwash was performed with 0.12% chlorhexidine. Microbial samples were collected in BHI agar plates for microbiological analysis. Two dishes were positioned on the clinician (10 cm from the mouth) and a third one at 15 cm from the patient's mouth. The samples were incubated for 48 hours at 37°C. Results were expressed in colony-forming units (CFU). RESULTS: Statistical analysis carried out by means of Student's t test, as well as Wilconxon and Kruskal-Wallis tests revealed that the prior use of 0.12% chlorhexidine as mouthwash significantly reduced CFU in the three positions studied (P < 0.001). CONCLUSION: The prior use of 0.12% chlorhexidine as mouthwash significantly reduced contamination caused by aerosolized sodium bicarbonate during dental prophylaxis in the orthodontic clinic.

scholarly journals Impact of brackets on smile esthetics: laypersons and orthodontists perception

2012 ◽  
Vol 17 (5) ◽  
pp. 64-70 ◽  
Author(s):  
Seandra Cordeiro de Oliveira ◽  
Rachel D'Aurea Furquim ◽  
Adilson Luiz Ramos
Keyword(s):  
Error Analysis ◽  
Young Woman ◽  
Visual Analog Scale ◽  
Orthodontic Treatment ◽  
Wilcoxon Test ◽  
Orthodontic Appliances ◽  
Analog Scale ◽  
Ceramic Brackets ◽  
Ceramic Bracket ◽  
Smile Esthetics

OBJECTIVE: This study evaluated the influence of orthodontic appliances on smile esthetics assessed by lay adolescents, lay adults and orthodontists. METHODS: A facial photograph of a smiling young woman was used under the following conditions: With metal orthodontic brackets ligated by different elastic ligature colors (green, red and gray), with ceramic bracket brackets (transparent elastic ligature) and without brackets, totaling five 15 x 20 cm pictures. For the photograph assessment, 16 lay adolescents, 16 lay adults and 16 orthodontists were randomly selected. The photographs were randomly arranged in an album, followed by a visual analog scale (VAS) for the scores registration. Scores in both evaluations of each group of evaluators (adolescents, adults and orthodontists) were submitted to error analysis by WILCOXON test and multiple comparison among groups performed by Kruskal - Wallis at 5% significance. RESULTS: Orthodontists, adults and adolescents agreed in their opinions, although the orthodontists gave lower scores in their assessments. It could be observed that ceramic brackets were more acceptable concerning the smile esthetics, whereas the metal brackets received the lowest scores. CONCLUSION: Orthodontists, adults and even adolescents seem to prefer esthetic solutions during orthodontic treatment.

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