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orthodontic Bracket

Jamal Y Amer, Mohammad M Rayyan
OBJECTIVE: To evaluate the effect of different surface treatments and bonding modalities on the shear bond strength (SBS) between metallic orthodontic brackets and zirconia crowns. MATERIALS AND METHODS: Sixty zirconia specimens were computer-aided design/computer-aided manufacturing milled, sintered, glazed, and embedded in acrylic resin. The specimens were divided into three groups according to the surface treatment applied: C: no surface treatment (control), S: sandblasted with 50 μm Al2 O3 , and D: Sof-Lex disc roughening...
2018: Journal of Orthodontic Science
Runzhi Guo, Hao Liu, Xiaobei Li, Qiaolin Yang, Lingfei Jia, Yunfei Zheng, Weiran Li
Although periodontal diseases during fixed appliance treatment are a common issue, few studies have focused on the clinical and microbial factors associated with orthodontic appliances. Hence, we investigated changes in the subgingival microbial community and their association with periodontal changes at the early stage of fixed appliance treatment. Subgingival plaques from ten female patients with fixed appliances were obtained at three time points: before, 1 month and 3 months after the placement of the brackets (T0, T1 and T2)...
December 13, 2018: Current Microbiology
Nicoline C W van der Kaaij, Maria J Faaij, Jacob M Ten Cate, Monique H van der Veen
BACKGROUND: A quantitative light-induced fluorescence digital (QLF-D) camera is able to assess demineralizations adjacent to orthodontic brackets. Rotations of teeth during and the presence of the orthodontic appliances may influence the longitudinal follow-up of such lesions over time. METHODS: Brackets were bonded on extracted teeth: 54 incisors and 31 canines. Demineralizations were formed in vitro directly cervical of the bracket. Images were captured using a QLF-D camera mounted on an optical bench, equipped with a goniometer on a turntable...
December 11, 2018: BMC Oral Health
Viktoria Meyer-Kobbe, Katharina Doll, Meike Stiesch, Rainer Schwestka-Polly, Anton Demling
PURPOSE: The objective of this in situ study was to quantify the intraoral biofilm reduction on bracket material as a result of different surface modifications using silver ions. In addition to galvanic silver coating and physical vapor deposition (PVD), the plasma immersion ion implantation and deposition (PIIID) procedure was investigated for the first time within an orthodontic application. MATERIALS AND METHODS: An occlusal splint equipped with differently silver-modified test specimens based on stainless steel bracket material was prepared for a total of 12 periodontally healthy patients and was worn in the mouth for 48 h...
December 10, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
Ezgi Atik, Hande Gorucu-Coskuner, Tulin Taner
OBJECTIVE: The aim was to compare the clinical performance of uncoated and adhesive precoated brackets bonded with either self-etching primer (SEP) or conventional two-step etch and primer method (CEM). SUBJECTS AND METHODS: The sample consisted of 63 patients with a mean age of 15.20 ± 1.6 years. In group I (n = 15), uncoated brackets and CEM; in group II (n = 16), precoated brackets and CEM; in group III (n = 16), uncoated brackets and SEP; in group IV (n = 16), precoated brackets and SEP were used for bonding...
November 30, 2018: Clinical Oral Investigations
Madhav K Manoj, Roopesh Ramakrishnan, Sujith Babjee, Rasha Nasim
INTRODUCTION: Our objective was to assess the levels of bisphenol A (BPA) released from light-cured and chemically cured resins used for orthodontic bracket bonding in 1 month. METHODS: Saliva specimens were obtained at 5 time periods from 40 healthy patients treated with orthodontic mechanotherapeutics. The periods of collections were just before bonding orthodontic brackets, followed by 30 minutes, 1 day, 1 week, and 1 month after orthodontic bonding. The specimens were analyzed with the high-performance liquid chromatography/mass spectrometry method for quantitative evaluation of BPA levels...
December 2018: American Journal of Orthodontics and Dentofacial Orthopedics
Guneet Guram, Junaid Ahmed Shaik
Aims and Objectives: Conventionally, composites are cured using halogen-based light-curing units (LCUs). However, recently, light-emitting diode (LED) LCUs have been introduced commercially, claiming many advantages, yet producing comparable bond strength even when cured with single LED LCUs. This present study was undertaken to compare the shear bond strength of orthodontic brackets bonded to teeth with conventional halogen LCU (3M ESPE Elipar 2500) and LED LCU (3M ESPE Elipar FreeLight 2) and to determine the site of bond failure...
September 2018: Journal of International Society of Preventive & Community Dentistry
Ananto Ali Alhasyimi, Pinandi Sri Pudyani, Ikmal Hafizi
INTRODUCTION: The number of patients who seek orthodontic treatment that may have a history of tooth bleaching is increasing over the time. Bleaching may influence the decrease of the bond strength of orthodontic brackets. OBJECTIVE: To determine and prove the effect of mangosteen peel (MP) extract to reverse the reduced shear bond strength (SBS) of orthodontic brackets after bleaching. METHODS: A total of 150 maxillary first premolar teeth were randomly divided into 6 experimental groups as follow (n=25): negative-control (N: no bleaching), positive-control (P: bleaching + no treatment), and the treatment groups (bleaching + 10% sodium ascorbate (SA), 10% (MP-10), 20% (MP-20) and 40% (MP-40) MP extract gel)...
September 2018: Dental Press Journal of Orthodontics
Sara Youssefinia, Omid Mortezai
Introduction: The purpose of this study was to compare the shear bond strength of color-change adhesive with a conventional light-cure adhesive at different debonding times. Materials and Methods: Seventy-two intact extracted human permanent premolar teeth were used in this research. The brackets were bonded with Transbond XT (Group I) and Transbond Plus color change adhesive (Group II). Each of the two adhesive groups were then further divided into three subgroups of 12 specimens each, for a total of six subgroups...
September 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Deepti Yadav, Vineet Golchha, Nandini Kamat, Rahul Paul, Pooja Sharma
Objectives: : The objective of this study is to compare the neutralization effect of various antioxidant agents on the bond strength of composite resins on stainless steel and ceramic brackets immediately bonded to previously bleached teeth. Materials and Methods: One hundred and sixty human maxillary premolars were used for the study. Teeth were divided into four groups (n = 40): Group 1 (control), Group 2 (bleached), Group 3 (sodium ascorbate), and Group 4 (tocopherol acetate)...
September 2018: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
Clara Gómez, Rosa Abellán, Juan Carlos Palma
INTRODUCTION: The complex designs of fixed orthodontic appliances hinder proper access for cleaning, favouring the development of gingival inflammation and white spot lesions around brackets. The aim of this study was to evaluate the effectiveness to avoid these undesirable effects by using two prophylactic methods: Photodynamic Therapy (PDT) and conventional ultrasonic scaler (US), in patients during fixed orthodontic treatment. MATERIALS AND METHODS: Twenty patients under orthodontic treatment for at least 15 months were randomly divided into two groups: PDT mediated by methylene blue (MB) and US...
November 3, 2018: Photodiagnosis and Photodynamic Therapy
Mohammed S Aldossary, Siti Suria Abu Hajia, Ario Santini
OBJECTIVE: To measure Total Light Energy (TLE) Transmission through six makes of ceramic orthodontic brackets alone and bracket-plus-adhesive samples, using the MARC™-Resin Calibrator (RC). METHODS: Six makes, three each monocrystalline (M) and polycrystalline (P) were used; PureSapphire (M), SPA Aesthetic (M), Ghost (M), Mist (P), Reflections (P), and Dual Ceramic (P). The Ortholux™ Light Curing Unit (LCU) was used to cure the orthodontic adhesive Transbond™XT...
December 2018: International Orthodontics
Carlos Flores-Mir, Jeremy Brandelli, Camila Pacheco-Pereira
INTRODUCTION: Our objectives were to assess patient satisfaction and quality of life among adults via 2 validated comprehensive questionnaires and to compare patient satisfaction and status in oral health-related quality of life immediately after orthodontic treatment in patients treated with Invisalign (Align Technology, San Jose, Calif) and those who received standard bracket-based treatment. METHODS: Adult patients (n = 145) treated with bracket-based or Invisalign therapy were recruited from several private practices and a university clinic...
November 2018: American Journal of Orthodontics and Dentofacial Orthopedics
Thorsten Grünheid, Brent E Larson
INTRODUCTION: A new flash-free adhesive promises to eliminate the flash removal step in bonding and to reduce bonding time by as much as 40% per bracket, with a bond failure rate of less than 2%. The aim of this trial was to compare bonding time and bracket failure rate over a 1-year period between the flash-free adhesive and a conventional adhesive for orthodontic bracket bonding. METHODS: Forty-five consecutive patients had their maxillary incisors, canines, and premolars bonded with ceramic brackets (Clarity Advanced; 3M Unitek, Monrovia, Calif) using a flash-free adhesive (APC Flash-Free Adhesive Appliance System; 3M Unitek) on 1 side and a conventional adhesive (APCII Adhesive Appliance System; 3M Unitek) on the other side...
November 2018: American Journal of Orthodontics and Dentofacial Orthopedics
María E Mateu, Sandra Benítez-Rogé, Marina Iglesias, Diana Calabrese, María Lumi, Marisa Solla, Pedro Hecht, Alejandra Folco
In compressed dental arches with mild to moderate crowding, space can be gained during the alignment phase to help improve tooth location. The aim of this study was to compare transverse measurements before and after the alignment stage in two groups: Group A treated with passive selfligating brackets, (Damon System) and Group B with conventional brackets (Roth philosophy). The change in transverse diameter between teeth was measured on dental casts taken before and after orthodontic alignment. Twenty four patients of both sexes aged 13 to 36 years, with moderate tooth crowding (4 to 6 mm), were treated...
August 2018: Acta Odontológica Latinoamericana: AOL
Mustafa Cihan Yavuz, Oguzhan Sunar, Suleyman Kutalmış Buyuk, Alpdogan Kantarcı
BACKGROUND: Discision method may provide an alternative to the piezocision approach in accelerated orthodontic treatment. The purpose of this study was to investigate the efficacy of discision on accelerated orthodontic tooth movement in comparison to the piezocision method in moderate crowding Angle Class I malocclusions. METHODS: Thirty-five female individuals were included in this clinical study. The participants were classified into three groups as conventional fixed non-extraction orthodontic treatment only (OT, n = 14), piezocision in addition to fixed non-extraction orthodontic treatment (PG, n = 9), and discision in addition to fixed non-extraction orthodontic treatment (DG, n = 12)...
October 29, 2018: Progress in Orthodontics
Tamzid Ahmed, Norma Ab Rahman, Mohammad Khursheed Alam
The aim of this study was to systematically review the available studies measuring the bond strength of orthodontic bracket-adhesive system under different experimental conditions in vivo . Literature search was performed in four different databases: PubMed, Web of Science, Cochrane, and Scopus using the keywords - bond strength, orthodontic brackets, bracket-adhesive, and in vivo . A total of six full-text articles were selected based on the inclusion and exclusion criteria of our study after a careful assessment by the two independent reviewers...
October 2018: European Journal of Dentistry
Moshabab A Asiry, Ibrahim Alshahrani, Nasser D Alqahtani, Bangalore H Durgesh
Our study evaluated the adhesion strength and antibacterial effect of a conventional orthodontic composite resin blended with yttrium fluoride (YF₃) nanoparticles. Yttrium fluoride nanoparticles (NP) were added to the conventional orthodontic composite resin (Transbond XT) at concentrations of 1%, 2%, and 3% (w/w), and the blended composite resins were labeled as NP1, NP2, and NP3, respectively. A total of 60 extracted human premolars was randomly allocated to four groups of 15 samples ( n = 15). Orthodontic brackets were bonded using the conventional (control) and experimental composite resins (NP1, NP2, and NP3)...
February 1, 2019: Journal of Nanoscience and Nanotechnology
Bangalore H Durgesh, Abdulaziz A Alkheraif, Abobaker Salem Musaibah, Moshabab A Asiry, Juha Varrela, Pekka K Vallittu
PURPOSE: The present study investigated the creep of adhesive resin under constant loading at the orthodontic bracket/ enamel interface with an orthodontic bracket-tooth model (shear creep) and three-point bending test (bending creep). MATERIALS AND METHODS: For the bracket-tooth model, sixty premolars were assigned to 4 groups (n = 15). Orthodontic brackets were bonded onto the enamel surface using four different bonding agents: conventional, homogeneous Transbond XT orthodontic composite (group 1/TBC); Transbond XT composite reinforced with photopolymerized glass-fiber-reinforced composite (FRC with bidirectional fibers) (group 2/TBE); Transbond XT reinforced with FRC of vertically oriented unidirectional fibers (group 3/TBV); and Transbond XT reinforced with FRC of horizontally oriented fibers (group 4/TBH)...
October 19, 2018: Journal of Adhesive Dentistry
E N Zhulev, E Y Nikolaeva
The aim of the study was to improve the accuracy of the positioning of brackets in the conduct of orthodontic treatment of the anomalies of the dentoalveolar system. The developed method of positioning the brackets assumes a temporary fixation of the wire guides in accordance with the prospective longitudinal axis of the tooth before carrying out the orthopantomography (X-Ray picture) of the teeth. According to the OPG (orthopantomography), the accuracy of determining the longitudinal axes of the teeth is estimated, and if the fixed wire guides and longitudinal axes of the teeth do not coincide, the angle is measured and corrections are made by moving their gingival part to the required value, then the impressions from the patient's jaws are taken and diagnostic plaster models having precise guidelines axis...
2018: Stomatologii︠a︡
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