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orthodontic Bracket

Mina Moradi, Elham Hormozi, Milad Shamohammadi, Vahid Rakhshan
BACKGROUND: To increase bond strength of brackets bonded to composite restorations, underlying composite restorations are usually roughened. This and subsequent bracket debonding might deteriorate smoothness of composite restoration, leading to clinical and aesthetic problems. Since this was not assessed before, this study was conducted. METHODS: Seventy intact human premolars were collected and filled with composite restorations. They were randomly divided into 3 groups: control (n=10), surface treatments before bracket bonding (bur, sandblasting, overall n=40), and surface roughening without bracket bonding (bur, sandblasting, overall n=20)...
October 17, 2018: International Orthodontics
Tuqa Rashad Raghis, Ghiath Mahmoud, Omar Hamadah
The objective of this study was to investigate the in vivo effectiveness of laser in the prevention of enamel demineralization during orthodontic treatment. A search of electronic databases (PubMed, ScienceDirect, Google Scholar, Scopus, the Cochrane Central Register of Controlled Trials - CENTRAL, OpenGrey, and ProQuest Dissertations and Theses - PQDT Open from ProQuest) was carried out. In vivo studies, randomized and/or controlled clinical trials regarding the use of laser treatment to prevent enamel demineralization during orthodontic treatment were included...
July 2018: Dental and medical problems
Jessy Askar
Date of birth: 26/04/1998; gender: female. A. PRETREATMENT DOCUMENTS: 8 years old; 04/10/2006. DIAGNOSIS: Angle's Class: Class II division 1. MISSING TEETH BEFORE TREATMENT: None. TREATMENT PLANNING: Appliances or means: Phase I: interception with placement of an expander followed by a Pull type activator; Phase II: three years later, placement of a Damon's bimaxillary multi-bracket. BEGINNING OF PHASE I: 8 years old; 08/11/2006...
October 11, 2018: International Orthodontics
Afaf Houb-Dine, Loubna Bahije, Fatima Zaoui
INTRODUCTION: A number of studies have been published regarding the behaviour of titanium inside the oral cavity or in a similar environment. Very often the results converge although they may on occasion be divergent. There appears to be a strong need for a systematic review because of this disparity, with a view to designing an experimental working method. Our study will attempt to analyse the various aspects of this problem. It will therefore focus on fluoride and its impact, as well as on the role it plays in corroding titanium orthodontic brackets (Ti) according to the synthesis and critical analysis drawn from literature...
October 9, 2018: International Orthodontics
Suleyman Kutalmış Buyuk, Mehmet Sami Guler, Muhammed Latif Bekci
AIM: The purpose of this study is to compare the effects of different wire size reverse closing loop and retraction forces in canine tooth distalization using the finite element analysis method. MATERIALS AND METHODS: Maxillary alveolar bone, maxillary first molar, second premolar and canine teeth were constructed in three dimensions along with their periodontal ligaments and standard edgewise brackets of 0.022 inch and stainless-steel reverse closing loop of 0...
October 10, 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
Nirav Patel, Prashanti Bollu, Kishore Chaudhry, Karthikeyan Subramani
Background: To evaluate the effect of bracket pad shape on shear bond strength (SBS) of orthodontic brackets bonded to human enamel. Material and Methods: One hundred and five extracted human maxillary permanent molars were divided into 7 groups of 15 specimens per group (n=15). Each group of teeth was bonded with 6 different shaped WildSmiles® brackets (Star, Heart, Soccer ball, Football, Flower, and Diamond) and GAC® rectangle shaped brackets. Shear debonding force was measured with an Instron universal testing machine using a knife-edged chisel 24 hours after initial bonding...
August 2018: Journal of Clinical and Experimental Dentistry
Roya Naseh, Maryam Afshari, Fereshteh Shafiei, Nima Rahnamoon
Background: Assure Plus is a recently introduced universal adhesive with the ability to bond to various restorations. This study compared the shear bond strength of brackets bonded to two types of ceramics using conventional bonding agent and Assure Plus. Surface damage caused by debonding was also evaluated. Material and Methods: In this in vitro study, 40 feldspathic and lithium disilicate ceramic discs were sandblasted, etched with 9.6% hydrofluoric acid and divided into two groups...
August 2018: Journal of Clinical and Experimental Dentistry
Mohammad Behnaz, Kazem Dalaie, Hoori Mirmohammadsadeghi, Hamed Salehi, Vahid Rakhshan, Farzin Aslani
INTRODUCTION: It is recently suggested that titanium dioxide (TiO2) nanoparticles can be added to bracket luting agents in order to reduce bacterial activity and protect the enamel. However, it is not known if this addition can affect the shear bond strength (SBS) below clinically acceptable levels. Therefore, this study examined this matter within a comprehensive setup. METHODS: This in vitro experimental study was conducted on 120 extracted human premolars randomly divided into four groups (n=30): in groups 1 and 2, Transbond XT light-cured composite with or without TiO2 was applied on bracket base; in groups 3 and 4, Resilience light-cured composite with or without TiO2 was used...
August 1, 2018: Dental Press Journal of Orthodontics
Abdel Hadi Kanj, Joseph Bouserhal, Essam Osman, Ahmed Abdel Moneim El Sayed
BACKGROUND: Contrary to buccal orthodontics, lingual orthodontics has no reference for vertical bracket positioning on the maxillary central incisor. The aim of this study was to provide a reference point in relation to torque for lingual bracket positioning on the palatal surface curvature (PSC) of the maxillary central incisor. METHODS: Cone beam computed tomography (CBCT) radiographs of 50 right maxillary central incisors from archives of a dental radiographic center were transferred to Photoshop, where their PSC was traced using pen-tool...
October 8, 2018: Progress in Orthodontics
Priyanka K Shah, Padmaja Sharma, Santosh Kumar Goje
Background: Silver is known for its antimicrobial activity. Silver coating effectively reduces Lactobacillus acidophilus and Streptococcus mutans count, thus reducing chances of dental plaque and caries. This silver coating may have effect on frictional property of orthodontic wires. Aim: The aim of this study is to evaluate and compare frictional resistance of silver-coated and uncoated stainless steel (SS) wires. Methods: Forty SS wires were divided into four groups of 10 each: Group 1 - 0...
September 2018: Contemporary Clinical Dentistry
Nishad A Vaheed, Mukesh Gupta, Sumitha A David, George Sam, Pavithra K Ramanna, Sudeep C Bhagvandas
AIM: This study aimed at evaluating and comparing the bond strength of stainless steel brackets bonded with multiple orthodontic adhesives. MATERIALS AND METHODS: About 60 premolars extracted to create space during orthodontic treatment were included in the present study. Premolar stainless steel brackets of size 0.022" slot with the surface area of bracket base of 11.15 mm2 were used. The premolars were divided randomly into three groups of 20 in each. Group I: Conventional Acid Etching (Transbond XT); group II: Seventh-generation adhesive materials (Xeno V); and group III: Flowable composite (Filtek Z350 XT)...
September 1, 2018: Journal of Contemporary Dental Practice
Sonal Attri, Rashmi Mittal, Puneet Batra, Saurabh Sonar, Karan Sharma, Sreevatsan Raghavan, Kriti Sharma Rai
OBJECTIVES: To investigate the influence of micro-osteoperforation (MOP) on rate of orthodontic tooth movement and pain perception with fixed appliances. DESIGN: 2 arm parallel randomized controlled trial with an allocation ratio of 1:1. SETTING: The outpatient department of a dental college. PARTICIPANTS: 105 patients were screened, out of which 60 met the inclusion criteria and consented to participate; consisting of 33 females and 27 males requiring en-masse retraction following first premolar extractions...
October 3, 2018: Journal of Orthodontics
Sachin Ahuja, Seema Gupta, Eenal Bhambri, Varun Ahuja, Baljinder Singh Jaura
OBJECTIVE: To study the biomechanical effects of the three-piece intrusion arch and Kalra simultaneous intrusion and retraction arch (K-SIR) on simultaneous intrusion and retraction of maxillary anterior teeth. DESIGN: Three-dimensional analysis of stresses and displacement of the anterior and posterior teeth with the three-piece intrusion arch and K-SIR arch was done using the finite element method (FEM). SETTING: Department of Orthodontics, Surendera Dental College and Research Institute, India...
October 3, 2018: Journal of Orthodontics
Timm C Schott, Christian Meller
Tooth-colored resin-based bracket bonding agents are used to fix orthodontic brackets to teeth as inconspicuously as possible. However, after debonding the brackets, these tooth-colored bonding remnants remain on the tooth surface and must be removed to prevent adverse sequelae. Various techniques can be used, all of which cause varying damage to the tooth structure, as the transition between composite and enamel is visually difficult to detect. With the fluorescence-aided identification technique (FIT) presented here, the fluorescent properties of new orthodontic composites are used for visualization, thereby allowing the tooth-colored but fluorescent resin-based bracket bonding remnants to be removed under direct view quickly and without damaging the tooth...
September 27, 2018: Quintessence International
Radwa A Sallam, Eman A Arnout
OBJECTIVES: To evaluate and compare the shear bond strength (SBS) of Erbium laser etched enamel to acid etched and to detect morphological changes on laser etched enamel surface using scanning electron microscope (SEM). Moreover, Laser induced caries resistance is advantageous in Orthodontics. METHODS: This is an Ex vivo study between January 2016 and December 2017, which comprises a total of 50 human premolars, extracted for orthodontic purpose, were used in this study...
September 2018: Saudi Medical Journal
Thorsten Grünheid, Brent E Larson
OBJECTIVES: To compare bracket survival and adhesive removal time between a flash-free and a conventional adhesive for orthodontic bracket bonding. MATERIALS AND METHODS: Forty-five consecutive patients had their maxillary incisors, canines, and premolars bonded with ceramic brackets using a flash-free adhesive (APC Flash-Free Adhesive, 3M Unitek, Monrovia, Calif) on one side and a conventional adhesive (APCII Adhesive, 3M Unitek) on the other side. The side allocation was randomized...
September 19, 2018: Angle Orthodontist
Leila Latić Hodžić, Andrei C Ionescu, Eugenio Brambilla, Matteo Basso, Dragana Gabrić, Senka Meštrović
OBJECTIVE: To compare the shear bond strength (SBS) values of orthodontic brackets luted using a resin-modified glass ionomer cement (RMGIC) on enamel surfaces etched using either an Er:YAG laser in two different working modes, or a conventional etching protocol, including phosphoric acid. MATERIALS AND METHODS: Sixty healthy human premolars were randomly allocated to three experimental groups (n = 20) and etched with: Group 1: Er:YAG laser in super-short pulse (SSP) mode (100 mJ, 20 Hz, 2 W); Group 2: Er:YAG laser in quantum square pulse mode (120 mJ, 10 Hz, 1...
September 18, 2018: Photomedicine and Laser Surgery
Zhuojun Xu, Jing Li, Xiaochuan Fan, Xiaofeng Huang
OBJECTIVE: To evaluate the effect of erbium: yttrium aluminium garnet laser conditioning bond strength of orthodontic brackets on porcelain surfaces. BACKGROUND: There are few studies that evaluate the effect of Er:YAG laser about orthodontic bonding on porcelain surface. The efficacy of Er:YAG laser in porcelain conditioning is controversial. MATERIALS AND METHODS: Ninety ceramic specimens were randomly divided into five group, group A: etched with hydrofluoric (HF) acid; group B and C: etched with an energy parameter of 250 mJ, 20 Hz and 300 mJ, 20 Hz by Er:YAG laser instrument; group D and E: etched with an energy parameter of 250 mJ, 20 Hz and 300 mJ, 20 Hz of Er:YAG laser with HF etching...
September 18, 2018: Photomedicine and Laser Surgery
Parisa Salehi, Neda Babanouri, Mehdi Roein-Peikar, Fatemeh Zare
BACKGROUND: The antimicrobial properties of orthodontic wire and brackets with nitrogen-doped titanium dioxide (N-doped TiO2) coating have been studied in the past. However, the evaluation period had been short and limited to 30 days. The aim of the present study was to extend the evaluation period (up to 90 days) of assessing the long-term antimicrobial effects of stainless steel orthodontic brackets coated with nitrogen-doped titanium dioxide (N-doped TiO2). METHODS: A total of 40 stainless steel pre-adjusted premolar brackets were equally divided into two groups; namely the control group (n=20, uncoated brackets) and the experimental group (n=20, coated brackets)...
September 17, 2018: Progress in Orthodontics
Banafsheh Poormoradi, Shahrzad Tamasoki, Armaghan Shahbazi, Amirarsalan Hooshyarfard, Farshid Vahdatinia, Faeze Behgozin, Lili Tapak
Introduction: During orthodontic treatment, patients are expected to undergo consistent periodic prophylaxis as a result of complexities in oral hygiene. The aim of this study was to investigate, analyze, and compare the effectiveness of two professional prophylaxis systems of rubber cup polishing (RCP) and air-powder polishing (APP) in patients undergoing orthodontic treatment based on different levels of plaque and pigment on teeth and the extent of attachment of brackets after prophylaxis...
September 2018: Journal of Indian Society of Periodontology
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