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https://www.readbyqxmd.com/read/28545965/comparative-evaluation-of-micron-and-nano-sized-intracanal-medicaments-on-penetration-and-fracture-resistance-of-root-dentin-an-in-vitro-study
#1
Abburi Sireesha, R Jayasree, Sampath Vidhya, Sekar Mahalaxmi, V Sujatha, T S Sampath Kumar
Intracanal medicaments play a vital role in disinfection of root canal system. The aim of this study was to evaluate intratubular penetration and fracture resistance of roots filled with micron- and nano-sized intracanal medicaments: calcium hydroxide (CH), nanocalcium hydroxide (NCH), chitosan (CS) and nanochitosan (NCS). Their antibacterial effect on E. faecalis was tested using agar diffusion method. NCH and NCS were prepared by precipitation method and ionic crosslinking respectively. NCH and NCS particles were spherical, with an average particle size of 102±11...
May 22, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28535642/-clinical-effects-of-dynesys-system-and-transfacet-decompression-through-wiltse-approach-in-the-treatment-of-lumbar-degenerative-diseases
#2
K Shang, M J Chen, D G Wang
Objective: To investigate the early clinical effects of Dynesys system and transfacet decompression by Wiltse approach in the treatment of lumbar degenerative diseases. Methods: From January 2010 to December 2013, 48 patients suffering from lumbar degenerative diseases were treated with Dynesys system in addition to transfacet decompression through Wiltse approach.There were 28 males and 20 females with age of (51.8±6.8). The preoperative diagnosis included lumbar spinal stenosis(10 cases); lumber intervertebral disc herniation (38 cases)...
May 23, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28527851/intentional-replantation-of-an-avulsed-immature-permanent-incisor-a-case-report
#3
Claudio Maniglia-Ferreira, Fabio de Almeida Gomes, Marcelo de Morais Vitoriano
This case report discusses the successful endodontic treatment of an open apex maxillary right permanent central incisor that had been avulsed and incorrectly replanted in a 7-year-old patient. The tooth was carefully re-extracted followed by cleaning of the alveolar socket and immediate replantation. However, pulp necrosis was diagnosed, and regenerative endodontic treatment was performed. The root canal system was disinfected by passive ultrasonic irrigation with 2.5% sodium hypochlorite. At the first visit, the tooth was repositioned and immobilized with an appropriate semirigid splint...
May 17, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28512483/efficacy-of-different-root-canal-irrigants-on-smear-layer-removal-after-post-space-preparation-a-scanning-electron-microscopy-evaluation
#4
Rahele Mirseifinejad, Mehdi Tabrizizade, Abdolrahim Davari, Fateme Mehravar
INTRODUCTION: Effective durable adhesion between post material and dentine using resin cements is essential for longevity of restoration. The aim of this in vitro study was to compare the effect of different irrigants on smear layer removal after post space preparation. METHODS AND MATERIALS: A total of 75 extracted anterior human teeth were selected. The canals were instrumented by rotary system and then were filled. After preparing the post space, teeth were divided into 5 groups according to irrigants: 17% EDTA; 17% EDTA+2% CHX; 5...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512283/unusual-root-canal-irrigation-solutions
#5
Zahed Mohammadi, Hamid Jafarzadeh, Sousan Shalavi, Jun-Ichiro Kinoshita
Microorganisms and their by-products play a critical role in pulp and periradicular pathosis. Therefore, one of the main purposes of root canal treatment is disinfection of the entire system of the canal. This aim may be obtained using mechanical preparation, chemical irrigation, and temporary medication of the canal. For this purpose, various irrigation solutions have been advocated. Common root canal irrigants, such as sodium hypochlorite, chlorhexidine, and a mixture of tetracycline, acid, and detergent have been extensively reviewed...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28503480/intraoperative-discomfort-associated-with-the-use-of-a-rotary-or-reciprocating-system-a-prospective-randomized-clinical-trial
#6
Aline Cristine Gomes, Adriana Jesus Soares, Erick M Souza, Alexandre Augusto Zaia, Emmanuel João Nogueira Leal Silva
OBJECTIVES: The aim of this randomized, controlled, prospective clinical study was to evaluate patients' intraoperative discomfort during root canal preparations in which either multi-file rotary (Mtwo) or single-file reciprocating (Reciproc) systems were used. MATERIALS AND METHODS: Fifty-five adult patients, aged between 25 and 69 years old, with irreversible pulpitis or pulp necrosis participated in this study. Either the mesiobuccal or the distobuccal canals for maxillary molars and either the mesiobuccal or the mesiolingual canals for mandibular molars were randomly chosen to be instrumented with Mtwo multi-file rotary or Reciproc single-file reciprocating systems...
May 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28483164/influence-of-the-apical-preparation-size-and-the-irrigant-type-on-bacterial-reduction-in-root-canal-treated-teeth-with-apical-periodontitis
#7
Renata Costa Val Rodrigues, Homan Zandi, Anne Karin Kristoffersen, Morten Enersen, Ibrahimu Mdala, Dag Ørstavik, Isabela N Rôças, José F Siqueira
INTRODUCTION: This clinical study evaluated the influence of the apical preparation size using nickel-titanium rotary instrumentation and the effect of a disinfectant on bacterial reduction in root canal-treated teeth with apical periodontitis. METHODS: Forty-three teeth with posttreatment apical periodontitis were selected for retreatment. Teeth were randomly divided into 2 groups according to the irrigant used (2.5% sodium hypochlorite [NaOCl], n = 22; saline, n = 21)...
May 5, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28480947/comparison-of-two-cone-beam-computed-tomography-systems-in-the-visualization-of-endodontic-structures
#8
Sabrina Strobel, Evelyn Lenhart, Johan P Woelber, Jonathan Fleiner, Christian Hannig, Karl-Thomas Wrbas
An important part of endodontic diagnosis and treatment is the adequate visualization of root canal anatomy. The objective of the present study was to compare two different three-dimensional cone-beam computed tomography (CBCT) systems, Scanora 3D and 3D Accuitomo 170, with respect to their visualization of endodontic canal systems and potential pathological alterations. Seventy extracted human teeth were investigated with regard to the radiographic detection of number of root canals, lateral canals, root canal fillings and posts, vertical root fractures, and the occurrence of image artifacts...
2017: Swiss Dental Journal
https://www.readbyqxmd.com/read/28476466/effect-of-protaper-gold-self-adjusting-file-and-xp-endo-shaper-instruments-on-dentinal-microcrack-formation-a-micro-computed-tomographic-study
#9
H Melike Bayram, Emre Bayram, Mert Ocak, Ahmet Demirhan Uygun, Hakan Hamdi Celik
INTRODUCTION: The aim of the present study was to evaluate the frequency of dentinal microcracks observed after root canal preparation with ProTaper Universal (PTU; Dentsply Tulsa Dental Specialties, Tulsa, OK), ProTaper Gold (PTG; Dentsply Tulsa Dental Specialties), Self-Adjusting File (SAF; ReDent Nova, Ra'anana, Israel), and XP-endo Shaper (XP; FKG Dentaire, La Chaux-de-Fonds, Switzerland) instruments using micro-computed tomographic (CT) analysis. METHODS: Forty extracted human mandibular premolars having single-canal and straight root were randomly assigned to 4 experimental groups (n = 10) according to the different nickel-titanium systems used for root canal preparation: PTU, PTG, SAF, and XP...
May 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28475094/adaptation-of-gutta-percha-to-oval-canals-a-cone-beam-computed-tomographic-analysis
#10
Rafaela Andrade de Vasconcelos, Carlos Henrique Ribeiro Camargo, Bruno Neves Cavalcanti, Luiz Roberto Coutinho Manhães-Jr, Simone Helena Ferreira Gonçalves
This study evaluated the influence of different instrumentation techniques on the adaptation of gutta percha cones in oval-shaped root canals. A total of 90 human single-rooted teeth were divided into groups according to the instrumentation technique that was used: group M, manual; group OM, hybrid: oscillatory plus manual; group PT, rotary (ProTaper Universal); group OPT, hybrid: oscillatory plus rotary (ProTaper Universal); group MT, rotary (Mtwo); and group OMT, hybrid: oscillatory plus rotary (Mtwo). After a single gutta percha cone was adapted to the canal, cone beam computed tomography was utilized to perform assessments at areas of greater contact of gutta percha to root canal walls...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28475092/technological-advances-in-endodontics-treatment-of-a-mandibular-molar-with-internal-root-resorption-using-a-reciprocating-single-file-system
#11
Samir Noronha de Souza, André Augusto Franco Marques, EmÍlio Carlos Sponchiado-Júnior, Lucas da Fonseca Roberti Garcia, Matheus Franco da Frota, Fredson Márcio Acris de Carvalho
The field of endodontics has become increasingly successful due to technological advances that allow clinicians to solve clinical cases that would have been problematic a few years ago. Despite such advances, endodontic treatment of teeth with internal root resorption remains challenging. This article presents a clinical case in which a reciprocating single-file system was used for endodontic treatment of a mandibular molar with internal root resorption. Radiographic examination revealed the presence of internal root resorption in the distobuccal root canal of the mandibular right first molar...
May 2017: General Dentistry
https://www.readbyqxmd.com/read/28469822/comparison-of-the-shaping-characteristics-of-neolix-and-protaper-universal-systems-in-preparation-of-severely-curved-simulated-canals
#12
Maryam Forghani, Maryam Hezarjaribi, Hamidreza Teimouri
BACKGROUND: The aim of this in vitro study was to compare the shaping characteristics of two types of nickel-titanium endodontic file systems with regard to the following parameters: Canal straightening, Canal deviation and Instrumentation time. MATERIAL AND METHODS: Fifty severely curved canals simulated in resin blocks were prepared to an apical size 25 using Protaper Universal orNeolix systems (n=25 canals/group). The angle of canal curvature was determined before and after instrumentation...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28469819/evaluation-of-antibacterial-efficacy-of-photodynamic-therapy-vs-2-5-naocl-against-e-faecalis-infected-root-canals-using-real-time-pcr-technique
#13
REVIEW
Maryam Janani, Farnaz Jafari, Mohammad Samiei, Farzaneh Lotfipour, Ailar Nakhlband, Negin Ghasemi, Tannaz Salari
BACKGROUND: Bacteria like E. faecalis can produce intra- and extra-radicular biofilms. Theoretically, the adjustable penetration ability of lasers enables better access to root canal system. Therefore the aim of the present study was to compare the ability of photoactivated laser and 2.5% NaOCl irrigation solution to eliminate E. faecalis from the root canals by real-time PCR technique. MATERIAL AND METHODS: Sixty extracted human upper central incisors were selected and sterilized in an autoclave...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28462184/the-effects-of-economic-crisis-on-the-demand-and-supply-of-the-dental-services-in-greece
#14
Diamantopoulos Kostas, Niakas Dimitris
OBJECTIVES: This paper attempts to explore the impact of the economic crisis on the supply and demand of dental care services by listing the changes in costs for dental care as well as by the use of a questionnaire administered to dentists. MATERIALS AND METHODS: The Health Accounts System, the Household Budget Surveys of the Greek Statistical Authority, and a questionnaire distributed to dentists working as self-employed were used as analysis tools. The survey involved a total of 361 dentists from all the regions of the country...
March 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28454634/vibrations-generated-by-several-nickel-titanium-endodontic-file-systems-during-canal-shaping-in%C3%A2-an-ex%C3%A2-vivo-model
#15
Dong-Min Choi, Jin-Woo Kim, Se-Hee Park, Kyung-Mo Cho, Sang Won Kwak, Hyeon-Cheol Kim
INTRODUCTION: This study aimed to compare the vibration generated by several nickel-titanium (NiTi) file systems and transmitted to teeth under 2 different motions (continuous rotation motion and reciprocating motion). METHODS: Sixty J-shaped resin blocks (Endo Training Bloc-J; Dentsply Maillefer, Ballaigues, Switzerland) were trimmed to a root-shaped form and divided into 2 groups according to the types of electric motors: WaveOne motor (WOM, Dentsply Maillefer) and X-Smart Plus motor (XSM, Dentsply Maillefer)...
April 25, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28446938/minimally-invasive-surgery-for-resection-of-ossification-of-the-ligamentum-flavum-in-the-thoracic-spine
#16
Wei Zhao, Chaoxiong Shen, Ranze Cai, Jianfeng Wu, Yuandong Zhuang, Zhaowen Cai, Rui Wang, Chunmei Chen
INTRODUCTION: Thoracic ossification of the ligamentum flavum (TOLF) is a common cause of progressive thoracic myelopathy. Surgical decompression is commonly used to treat TOLF. AIM: To evaluate the clinical outcomes of microsurgical decompression of TOLF via a paraspinal approach, using a percutaneous tubular retractor system. MATERIAL AND METHODS: First, three-dimensional (3D) image reconstruction and printed models were made from thin computed tomography scans for each patient...
2017: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
https://www.readbyqxmd.com/read/28446851/an-invitro-evaluation-of-the-accuracy-of-two-electronic-apex-locators-to-determine-working-length-in-the-presence-of-various-irrigants
#17
Ashwini B Prasad, Srivastava Harshit, Srivastava Arora Aastha, Raisingani Deepak
BACKGROUND: Cleaning and shaping of root canal system requires various irrigating solutions. The question is whether the presence of irrigation solution alters working length determination using apex locators. The purpose of this study was to compare the accuracy of Root ZX and i-Root apex locator for determining working length in the presence of different irrigating solution. MATERIALS AND METHOD: Eighty extracted single rooted human teeth were used. The teeth were sectioned at Cemento Enamel Junction (CEJ) and actual canal length determined...
September 2016: Ethiopian Journal of Health Sciences
https://www.readbyqxmd.com/read/28437194/comparison-of-three-final-irrigation-activation-techniques-effects-on-canal-cleanness-smear-layer-removal-and-dentinal-tubule-penetration-of-two-root-canal-sealers
#18
Elmas Turkel, Emel Olga Onay, Mete Ungor
OBJECTIVE: The aim of this study was to compare three final irrigation activation techniques with respect to their effects on debridement efficacy, smear layer removal, and dentinal tubule penetration of two different root canal sealers. BACKGROUND DATA: Different applications to improve the delivery of irrigating solutions within the root canal system are currently being investigated, as not all of the mechanisms and effects of these techniques have been clearly identified...
February 22, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28430299/effect-of-retreatment-instruments-on-microcrack-formation-a-microcomputed-tomography-study
#19
Mustafa M Koçak, Neslihan Y Çırakoğlu, Sibel Koçak, Baran C Sağlam, Ersan Çiçek, Sevinç A Türker, Emre Bodrumlu
INTRODUCTION: The purpose of this study was to compare the occurrence of microcracks in teeth prepared with different retreatment systems using microcomputed tomography (micro-CT). METHODS: Forty-two freshly extracted mandibular premolar teeth were used. The root canals were instrumented with stainless steel K-files to an apical size of 35/.02 using the balanced-force technique and were obturated using the passive compaction technique. The specimens were divided into 3 experimental groups according to retreatment system used (n = 14): ProTaper Universal retreatment (PTUR), Mtwo retreatment (MTR), or D-RaCe retreatment (D-RC) systems...
April 4, 2017: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/28426292/efficacy-of-three-different-lasers-on-eradication-of-enterococcus-faecalis-and-candida-albicans-biofilms-in-root-canal-system
#20
Silvija Kasić, Marita Knezović, Nataša Beader, Dragana Gabrić, Ana Ivanišević Malčić, Anja Baraba
OBJECTIVE: The objective was to compare the efficacy of three different lasers in disinfection of root canals inoculated with Enterococcus faecalis and Candida albicans biofilms. BACKGROUND: Endodontic space disinfection depends on the type of root canal irrigant used and the way it is delivered and agitated because irrigants have limited ability to reach all parts of root canal system. MATERIALS AND METHODS: Thirty single-rooted human teeth were selected...
April 20, 2017: Photomedicine and Laser Surgery
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