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Orthodontic bond strength

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
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
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
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
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
Seung-Min Lee, Kyung-Hyeon Yoo, Seog-Young Yoon, In-Ryoung Kim, Bong-Soo Park, Woo-Sung Son, Ching-Chang Ko, Sung-Ae Son, Yong-Il Kim
White spot lesions (WSLs), a side effect of orthodontic treatment, can result in reversible and unaesthetic results. Graphene oxide (GO) with a bioactive glass (BAG) mixture (BAG@GO) was added to Low-Viscosity Transbond XT (LV) in a ratio of 1, 3, and 5%. The composite's characterization and its physical and biological properties were verified with scanning electron microscopy (SEM) and X-ray diffraction (XRD); its microhardness, shear bond strength (SBS), cell viability, and adhesive remnant index (ARI) were also assessed...
September 14, 2018: Materials
Jing Guo, Li-Ping Wang, Jia Zhu, Jian Yang, Hong-Shui Zhu
This study aimed to determine the impact of dentinal tubule orientation on dentin bond strength to provide a reference for clinical cavity preparation in resin-bonded restoration. Patients aged 13-16 years were selected, including 18 males and 21 females. Forty-eight human maxillary first premolars from orthodontic extractions were chosen to prepare the test models with the dentinal tubule orientations perpendicular and parallel to the bonding substrate. The test models in the vertical and parallel groups were divided into three groups: total-etching with 20% phosphoric acid, total-etching with 35% phosphoric acid and self-etching, with the dentinal tubule surfaces bonded with composite resin blocks in each group...
August 2018: Current medical science
S Dilip, S Srinivas, M N Mohammed Noufal, K Ravi, R Krishnaraj, Anila Charles
Background: The purpose of the study was to evaluate and to compare the shear bond strength (SBS), adhesive remnant index, and surface roughness of the samples bonded after etching with phosphoric acid and erbium, chromium-doped: Yttrium scandium-gallium-garnet (Er, Cr: YSGG) laser. Materials and Methods: In the present analytical/descriptive study, 90 premolars extracted for orthodontic purposes were used, out of which 75 were randomly divided into five groups where five different methods were used to prepare the enamel for bonding; etching with 37% phosphoric acid for 15 s, irradiation with Er, Cr: YSGG laser at 1 watt for 10 s and 20 s, and irradiation with Er, Cr: YSGG laser at 1...
July 2018: Dental Research Journal
Özer Alkan, Burcu Oktay Çöven, Betül Özçopur, Fatih Kazancı, Yeşim Kaya, Cihan Aydoğan, Gürcan Eskitaşçıoğlu
Objective: The present study aimed to evaluate the effects of ozone and prophylactic antimicrobial applications on the shear bond strengths and bond failure interfaces of orthodontic brackets. Methods: Sixty human canine teeth were randomly divided into three groups (n=20), receiving the following treatments: Group I-pumice prophylaxis (Isler Dental, Ankara, Turkey)+37% orthophosphoric acid (Dentsply, Rio de Janeiro, Brazil)+Transbond XT primer and adhesive (3M Unitek, Monrovia, USA); Group II-prophylaxis paste (Topex, NJ, USA)+37% orthophosphoric acid (Dentsply, Rio de Janeiro, Brazil)+ Transbond XT primer and adhesive paste (3M Unitek, Monrovia, USA); and Group III-ozone application (Biozonix GmbH, Munich, Germany)+37% orthophosphoric acid (Dentsply, Rio de Janeiro, Brazil)+Transbond XT primer and adhesive (3M Unitek, Monrovia, USA)...
December 2017: Turkish journal of orthodontics
Jaideep Singh, Ashish Joshi, Thomas Manjooran, Swetha Raghav, Ashesh Gautam, Jaladhi H Patel
AIMS: The aim of the study was to evaluate the shear bond strength (SBS) of orthodontic brackets after mouth rinsing. MATERIALS AND METHODS: Sixty orthodontically extracted maxillary premolar teeth were used in the present study. Buccal surfaces of all the teeth were bonded with orthodontic bracket. Later, each tooth was embedded into acrylic resin and stored in distilled water. All the teeth were randomly divided into four groups (group I: Artificial saliva, group II: Alcohol mouth rinse- Listerine, group III: Chlorhexidine (CHX) mouth rinse-Hexidine, and group IV: Herbal mouth rinse-Befresh) and stored in each solution for 12 hours...
July 1, 2018: Journal of Contemporary Dental Practice
Ibrahim Alshahrani, Khalid Abdelaziz, Moshabab A Asiry, Al Jowharah AAl AlShikh, Wala AlGhamdi, Hajer A Mansour
AIM: To evaluate the effect of different stain removal protocols with or without topical fluoride application on the bond strength of orthodontic brackets to enamel. MATERIALS AND METHODS: Eighty extracted premolars were randomly assigned into four groups according to the stain removal protocol. The stain removal protocols were (1) using rubber cup with prophylaxis paste in (G1, n = 20), (2) air-abrasion with prophy-jet polishing system (G2, n = 20), (3) micro-abrasion with opalusture polishing paste (G3, n = 20), and (4) macro-abrasion with ultrafine diamond finishing tips (G4, n = 20)...
July 1, 2018: Journal of Contemporary Dental Practice
Layene Figueiredo Almeida, Lidia Parsekian Martins, Renato Parsekian Martins
PURPOSE: To assess the effects of reducing the curing time of a high-power light-emitting diode (LED) unit (Valo, Ultradent, South Jordan, UT, USA) on shear bond strength (SBS) of metal brackets and on the amount of adhesive remnant of two orthodontic composites. METHODS: Eighty human premolars were divided into four groups (G1-4) according to curing time and composite: G1 (Transbond XT, 6 s), G2 (Opal Bond MV, 6 s), G3 (Transbond XT, 3 s), and G4 (Opal Bond MV, 3 s)...
September 2018: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
Kenan Demirovic, Martina Slaj, Stjepan Spalj, Mladen Slaj, Sedin Kobaslija
Aim: Aim of article was to compare the shear bond strength of indirectly and directly bonded orthodontic brackets. Materials and methods: The experimental in vitro study included 60 maxillary and mandibular premolars. Teeth were mounted on cold-cure acrylic blocks for each tooth separately and divided into two groups: directly bonded brackets (30 teeth) and indirectly bonded brackets (30 teeth). Brackets (Discovery, Roth 0.022", Dentaurum, Ispringen, Germany) were bonded using Transbond XT (3M Unitek, Monrovia, CA, USA) in direct method, while in indirect technique, a combination of Transbond XT and Sondhi Rapid Set (3M Unitek, Monrovia, CA, USA) was used...
June 2018: Acta Informatica Medica: AIM
Verónica García-Sanz, Vanessa Paredes-Gallardo, Carlos Bellot-Arcís, Lluís Martínez-León, Rafael Torres-Mendieta, Javier Montero, Alberto Albaladejo
Bonding orthodontic brackets to ceramic materials is a challenging procedure; femtosecond (FS) laser conditioning could provide improved results, but the ideal settings for effective bracket-zirconia bonding have never been established. This study aimed to analyze the differences in surface roughness and shear bond strength (SBS) produced by different femtosecond laser settings and establish a protocol to prepare zirconia surfaces for optimal adhesion to metal orthodontic brackets. One hundred eighty zirconia samples were assigned to six groups according to surface treatment: (1) control; (2) air-particle abrasion (APA); (3) FS laser irradiation (300 mW output power, 60 μm inter-groove distance); (4) FS laser irradiation (200 mW, 100 μm); (5) FS laser irradiation (40 mW, 60 μm); and (6) FS laser irradiation (200 mW, 60 μm)...
July 18, 2018: Lasers in Medical Science
Delal Dara Kılınç, Gülşilay Sayar
OBJECTIVE: The aim of this study was to evaluate the shear bond strength of three different adhesives (Transbond XT, Light Cure Adhesive, 3M Unitek; Transbond Plus, Light Cure Band Adhesive, 3M Unitek; Transbond Supreme LV, Low Viscosity Light Cure Adhesive, 3M Unitek), which were applied to the etched enamel of occlusal faces of mandibular molar teeth to gain bite opening. The null hypothesis was that there is no statistically significant difference between shear bond strength of these three adhesives...
September 2018: International Orthodontics
Maria-Gabriela Marc, Cédric Bazert, Jean-Pierre Attal
CONTEXT/OBJECTIVES: Clinical studies show a mean bond failure rate of orthodontic brackets, which ranges between 6% and 8%, with a predominance for the second mandibular premolars. The pre-coated flash-free adhesive ceramic brackets allow to obtain, according to their manufacturer, a low bond failure rate, while ensuring a simplified implementation. The aim of this study was to measure the shear bond strength of ceramic brackets bonded with the direct method using a pre-coated flash-free adhesive system, and to compare it with the shear bond strength of the old generation precoated brackets and that of operator coated brackets to the buccal surface of the second mandibular premolars...
September 2018: International Orthodontics
Mustafa Mehmet Özarslan, Özlem Üstün, Ulviye Sebnem Buyukkaplan, Çağatay Barutcigil, Nurullah Türker, Kubilay Barutcigil
Adult orthodontics may confront problems related to the bonding performance of orthodontic brackets to new generation restorative materials used for crown or laminate restorations. The aim of the present study was to investigate the shear bond strength of ceramic brackets to two new generation CAD/CAM interpenetrating network composite and nanoceramic composite after different surface treatments. Er,Cr:YSGG Laser, hydrofluoric acid (9%), sandblasting (50  μ m Al2 O3 ), and silane were applied to the surfaces of 120 CAD/CAM specimens with 2 mm thickness and then ceramic brackets were bonded to the treated surfaces of the specimens...
2018: BioMed Research International
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