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https://www.readbyqxmd.com/read/28300497/bond-strength-of-stainless-steel-orthodontic-brackets-bonded-to-prefabricated-acrylic-teeth
#1
Wan Salbiah Wan Abdul Razak, Martyn Sherriff, Dirk Bister, Jadbinder Seehra
OBJECTIVES: The purpose of this in-vitro study was to evaluate the force to debond stainless steel orthodontic brackets bonded to acrylic teeth using different combinations of adhesive and surface treatments. MATERIALS AND METHODS: One hundred prefabricated upper lateral incisor acrylic teeth were divided into 4 equal groups: Transbond XT® adhesive only (Group 1, control), Transbond XT® adhesive with sandblasting (Group 2), Transbond XT® adhesive with abrasion / + methyl methacrylate (MMA) (Group 3) and Triad® Gel only (Group 4)...
March 16, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28298988/bond-strength-of-dental-nanocomposites-repaired-with-a-bulkfill-composite
#2
Uzay Koç-Vural, Leyla Kerimova, İsmail H Baltacioglu, Arlin Kiremitçi
BACKGROUND: The aim of this study was to analyze the bond strength of aged resin based nanocomposites repaired with the same and bulk fill composites. MATERIAL AND METHODS: Seventy-two disc shaped resin composites consisted of three different nanocomposite resins (Filtek Ultimate/FU, Herculite XRV Ultra/HXRV, and Reflectys/R) were produced. After storing the samples for 8 weeks in distilled water, each material was combined with the same material or the bulk-fill composite resin system (Filtek Ultimate+Filtek Ultimate/Group-1; Filtek Ultimate+Tetric BF/Group-2; Herculite XRV+Herculite XRV/Group-3; Herculite XRV+Tetric BF/ Group-4; Reflectys+Reflectys/Group 5; Reflectys+Tetric BF/Group-6), for repair...
March 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28293665/comparison-of-endodontic-medicaments-on-bond-strength-of-fiber-post-to-root-dentin-using-resin-cement
#3
Maryam Zare Jahromi, Mehrdad Barekatain, Shirin Ravanbod, Parisa Ranjbarian, Sara Kousehlar
STATEMENT OF THE PROBLEM: Endodontic irrigants and medicaments may affect the bond strength of intracanal posts to root dentin. PURPOSE: The aim of this study was to compare the effect of calcium hydroxide (Ca(OH)2) and 2% chlorhexidine gel (CHX) on bond strength of fiber post cemented with resin cement to root dentin. MATERIALS AND METHOD: This in vitro experimental study was conducted on 36 mandibular premolars. Canals were prepared using the step back technique...
March 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28289759/thermal-imaging-of-the-pulp-during-residual-adhesive-removal
#4
Gökmen Kurt, Nisa Gül, Özgür Er, Gülşen Çakmak, Emre Bendeş, Veysel Aslantaş
OBJECTIVE: The aim of this study was to evaluate the temperature changes of the pulpal area during different adhesive clean-up procedures. MATERIALS AND METHODS: A total of 80 freshly extracted adult maxillary premolar teeth were divided into four groups. Adhesive clean-up was performed with 6- and 12-fluted tungsten carbide burs (TCB) using low- and high-speed handpieces with air or water cooling after bracket debonding. The temperature changes and cool down times were evaluated with a thermal camera...
March 13, 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28280706/comparative-study-of-postoperative-stability-between-conventional-orthognathic-surgery-and-a-surgery-first-orthognathic-approach-after-bilateral-sagittal-split-ramus-osteotomy-for-skeletal-class-iii-correction
#5
Deuk-Hyun Mah, Su-Gwan Kim, Ji-Su Oh, Jae-Seek You, Seo-Yun Jung, Won-Gi Kim, Kyung-Hwan Yu
OBJECTIVES: The purpose of this study is to compare the postoperative stability of conventional orthognathic surgery to a surgery-first orthognathic approach after bilateral sagittal split ramus osteotomy (BSSRO). MATERIALS AND METHODS: The study included 20 patients who underwent BSSRO for skeletal class III conventional orthognathic surgery and 20 patients who underwent a surgery-first orthognathic approach. Serial lateral cephalograms were analyzed to identify skeletal changes before surgery (T0), immediately after surgery (T1), and after surgery (T2, after 1 year or at debonding)...
February 2017: Journal of the Korean Association of Oral and Maxillofacial Surgeons
https://www.readbyqxmd.com/read/28273688/the-effect-of-polymerization-methods-and-fiber-types-on-the-mechanical-behavior-of-fiber-reinforced-resin-based-composites
#6
Nan-Chieh Huang, Marco A Bottino, John A Levon, Tien-Min G Chu
PURPOSE: Glass fibers were introduced to increase the fracture resistance of resin-based composites restorations; however, the poor polymerization between fibers and resin-based composite were sometimes noted and can cause debonding and failure. The purpose of this study was to investigate the effects of different polymerization methods as well as fiber types on the mechanical behavior of fiber-reinforced resin-based composites. MATERIALS AND METHODS: Seventy-five specimens were fabricated and divided into one control group and four experimental groups (n = 15), according to the type of glass fiber (strip or mesh) and polymerization methods (one- or two-step)...
March 8, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28265286/treatment-of-adults-with-anterior-mandibular-teeth-crowding-reliability-of-little-s-irregularity-index
#7
J Antoszewska-Smith, M Bohater, M Kawala, M Sarul, M Rzepecka-Skupień
The attempt of this article was to assess reliability of Little's Irregularity Index (LII) as for stability of the treatment outcomes in adults with crowded mandibular incisors. LII was measured on a digital cast prior to an orthodontic treatment (T1) of the 302 patients thus allowing us to establish the treatment plan, which called for (a) expansion (group 1), interproximal stripping (group 2), or extraction of one of the mandibular incisors. LII was measured after debonding (T2) and a year after retention (T3)...
2017: International Journal of Dentistry
https://www.readbyqxmd.com/read/28257737/evaluation-of-enamel-surface-roughness-after-orthodontic-bracket-debonding-with-atomic-force-microscopy
#8
Shadi Mohebi, Hassan-Ali Shafiee, Nazila Ameli
INTRODUCTION: Achieving a smooth enamel surface after orthodontic bracket debonding is imperative. In this study, we sought to compare the enamel surface roughness values after orthodontic bracket debonding and resin removal using a white stone bur, a tungsten carbide bur, and a tungsten carbide bur under loupe magnification. METHODS: Thirty sound premolars were randomly divided into 3 groups, and their buccal surfaces were subjected to atomic force microscopy to measure initial surface roughness...
March 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28245928/evaluation-of-dental-adhesive-systems-incorporating-an-antibacterial-monomer-eugenyl-methacrylate-egma-for-endodontic-restorations
#9
A Almaroof, S A Niazi, L Rojo, F Mannocci, S Deb
OBJECTIVE: The purpose of this study was to incorporate EgMA, an antibacterial monomer into two commercial dental adhesive systems for their application in endodontic restoration with the aim to disinfect the root canal space before curing and to inhibit bacterial growth on their surfaces after being cured. METHODS: EgMA monomer was added at 20%wt. into the formulation of the single-component self-etch, Clearfil Universal Bond™ (CUB) and into the catalyst and the adhesive components of the total-etch Adper Scotchbond-multipurpose™ (SBMP) adhesive systems...
February 25, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28241812/effects-of-various-debonding-and-adhesive-clearance-methods-on-enamel-surface-an-in-vitro-study
#10
Xiao-Chuan Fan, Li Chen, Xiao-Feng Huang
BACKGROUND: The purpose of this study was to evaluate orthodontic debonding methods by comparing the surface roughness and enamel morphology of teeth after applying two different debonding methods and three different polishing techniques. METHODS: Forty eight human maxillary premolars, extracted for orthodontic reasons, were randomly divided into three groups. Brackets were bonded to teeth with RMGIC (Fuji Ortho LC, GC, Tokyo, Japan) (two groups, n = 18 each) after acid etching (30s), light cured for 40 s, exposed to thermocycling, then underwent 2 different bracket debonding methods: debonding pliers (Shinye, Hangzhou, China) or enamel chisel (Jinzhong, Shanghai, China); the third group (n = 12) comprised of untreated controls, with normal enamel surface roughness...
February 27, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28222875/comparison-of-push-out-bond-strength-of-fiber-reinforced-composite-resin-posts-according-to-cement-thickness
#11
Jun-Seong Park, Jeong-Sub Lee, Jeong-Won Park, Won-Gyun Chung, Eun-Hee Choi, Yoon Lee
STATEMENT OF PROBLEM: Post space size and cement thickness can differ because of variations in root canal morphology, such as an oval shape, and because the entire canal space cannot be included in the post space preparation. As a result, increased cement thickness around the post may affect the bond strength between the post and the dentin. PURPOSE: The purpose of this in vitro study was to evaluate the push-out bond strength of fiber-reinforced composite resin posts to root dentin with cement layers of varying thickness...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28222866/shear-bond-strength-of-zirconia-based-ceramics-veneered-with-2-different-techniques
#12
Ahmed M Zaher, J L Hochstedler, Frederick A Rueggeberg, Edwin L Kee
STATEMENT OF PROBLEM: Delamination of veneering ceramic is reported as one of the most frequent problems associated with veneered zirconia restorations. PURPOSE: The purpose of this in vitro study was to compare the shear bond strength of sintered lithium disilicate to that of pressed fluorapatite glass-ceramic on a zirconia substrate. MATERIAL AND METHODS: Thirty zirconia blocks (20×15×2.5-mm thick) were cut, sintered, and divided into 2 groups...
February 17, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28212978/a-systematic-review-of-the-survival-and-complication-rates-of-inlay-retained-fixed-dental-prostheses
#13
REVIEW
Junyu Chen, He Cai, Lai Suo, Yiyuan Xue, Jian Wang, Qianbing Wan
OBJECTIVES: The aim of this systematic review was to investigate the survival and complication rates of inlay-retainer fixed dental prostheses (IRFDPs). DATA/SOURCES: A systematic search was conducted in the PubMed, EMBASE, and Cochrane Library databases in English and time filters (articles published from 1960) were used. STUDY SELECTION: Randomized controlled trails (RCTs), controlled clinical trials (CCTs) and prospective cohort studies on IRFDPs with a mean follow-up period of at least 2 years were included...
February 23, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28208997/comparison-of-self-etch-primers-with-conventional-acid-etching-system-on-orthodontic-brackets
#14
Amit Zope, Yogita Zope-Khalekar, Shrikant S Chitko, Veerendra V Kerudi, Harshal Ashok Patil, Prasad Vasudeo Bonde, Pratik Jaltare, Siddhesh G Dolas
INTRODUCTION: The self-etching primer system consists of etchant and primer dispersed in a single unit. The etching and priming are merged as a single step leading to fewer stages in bonding procedure and reduction in the number of steps that also reduces the chance of introduction of error, resulting in saving time for the clinician. It also results in smaller extent of enamel decalcification. AIM: To compare the Shear Bond Strength (SBS) of orthodontic bracket bonded with Self-Etch Primers (SEP) and conventional acid etching system and to study the surface appearance of teeth after debonding; etching with conventional acid etch and self-etch priming, using stereomicroscope...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28165163/deterministic-self-rolling-of-ultrathin-nanocrystalline-diamond-nanomembranes-for-3d-tubular-helical-architecture
#15
Ziao Tian, Lina Zhang, Yangfu Fang, Borui Xu, Shiwei Tang, Nan Hu, Zhenghua An, Zi Chen, Yongfeng Mei
Nanocrystalline diamond nanomembranes with thinning-reduced flexural rigidities can be shaped into various 3D mesostructures, such as tubes, jagged ribbons, nested tubes, helices, and nested rings. Microscale helical diamond architectures are formed by controlled debonding in agreement with finite-element simulation results. Rolled-up diamond tubular microcavities exhibit pronounced defect-related photoluminescence with whispering-gallery-mode resonance.
February 6, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28161895/comparative-study-of-dental-enamel-loss-after-debonding-braces-by-analytical-scanning-electron-microscopy-sem
#16
Jacqueline Adelina Rodríguez-Chávez, Jesús Arenas-Alatorre, Irma Araceli Belio-Reyes
Clinical procedures when shear forces are applied to brackets suggest adhesion forces between 2.8 and 10.0 MPa as appropriate. In this study dental enamel was evaluated by scanning electron microscopy (SEM) before and after removing the brackets. Thirty bicuspids (previous prophylaxis) with metallic brackets (Roth Inovation 0.022 GAC), Transbond Plus SEP 3M Unitek adhesive and Transbond XT 3M resin were used. The samples were preserved to 37°C during 24 hr and submited to tangential forces with the Instron Universal machine 1...
February 5, 2017: Microscopy Research and Technique
https://www.readbyqxmd.com/read/28161774/outcome-following-subluxation-of-mobile-articulating-spacers-in-two-stage-revision-total-knee-arthroplasty
#17
Brent A Lanting, Adrian Lau, Matthew G Teeter, James L Howard
INTRODUCTION: Infection after total knee arthroplasty (TKA) is a severe complication. It is usually treated with two-stage revision and implantation of a cement spacer. Few studies describe the complications associated with a mobile articulating spacer. This study examined the subluxation of articulating antibiotic spacers in knees and correlated it with prospectively collected early outcome scores after implantation of a revision prosthesis. METHODS: Staged revisions for 72 infected primary total knee arthroplasties between 2004 and 2012 were examined...
February 4, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28153157/does-orthodontic-debonding-lead-to-tooth-sensitivity-comparison-of-teeth-with-and-without-visible-enamel-microcracks
#18
Irma Dumbryte, Laura Linkeviciene, Tomas Linkevicius, Mangirdas Malinauskas
INTRODUCTION: Our aim was to assess the possible changes in sensitivity of teeth with and without visible enamel microcracks (EMCs) up to 1 week after the removal of metal brackets. METHODS: After debonding, 15 patients possessing teeth with visible EMCs and 15 subjects whose teeth were free of EMCs were enrolled in the study. For each experimental group, a control group was formed. The assessments of tooth sensitivity elicited by compressed air and cold testing were performed 5 times: just before debonding, immediately after debonding, and at 1, 3, and 7 days after debonding...
February 2017: American Journal of Orthodontics and Dentofacial Orthopedics
https://www.readbyqxmd.com/read/28127535/mandibular-arch-orthodontic-treatment-stability-using-passive-self-ligating-and-conventional-systems-in-adults-a-randomized-controlled-trial
#19
Norma Ab Rahman, Mang Chek Wey, Siti Adibah Othman
OBJECTIVE: This randomized controlled trial aimed to compare the stability of mandibular arch orthodontic treatment outcomes between passive self-ligating and conventional systems during 6 months of retention. METHODS: Fortyseven orthodontic patients with mild to moderate crowding malocclusions not requiring extraction were recruited based on inclusion criteria. Patients (mean age 21.58 ± 2.94 years) were randomized into two groups to receive either passive self-ligating (Damon® 3MX, n = 23) or conventional system (Gemini MBT, n = 24) orthodontic treatment...
January 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28127332/effect-of-addition-of-curcumin-nanoparticles-on-antimicrobial-property-and-shear-bond-strength-of-orthodontic-composite-to-bovine-enamel
#20
Ahmad Sodagar, Abbas Bahador, Maryam Pourhajibagher, Badreddin Ahmadi, Pedram Baghaeian
OBJECTIVES: This study sought to assess the effect of curcumin nanoparticles (curcNPs) on antimicrobial property and shear bond strength (SBS) of orthodontic composite to bovine enamel. MATERIALS AND METHODS: In this in vitro, experimental study, 1%, 5% and 10% curcNPs were added to Transbond XT composite. Stainless steel brackets were bonded to 48 sound bovine incisors in four groups (n=12) using composite containing 0% (control), 1%, 5% and 10% curcNPs. The bracket-tooth SBS was measured by a universal testing machine...
September 2016: Journal of Dentistry of Tehran University of Medical Sciences
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