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Apical leakage

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https://www.readbyqxmd.com/read/29674815/apical-dye-leakage-of-two-single-cone-root-canal-core-materials-hydrophilic-core-material-and-gutta-percha-sealed-by-different-types-of-endodontic-sealers-an-in-vitro-study
#1
Mohamed Abdel Aziz Mohamed El Sayed, Hussam Al Husseini
Aim of the Study: The aim of this study was to compare the apical sealing ability of two single-cone filling materials when sealed with different types of root canal sealers. Materials and Methods: Eighty extracted maxillary and mandibular canines were selected and their crowns were cut. The root canals were prepared using ProTaper Universal rotary system until size F4 and then divided into seven experimental groups ( n = 10 each) and two control groups ( n = 5 each)...
March 2018: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29670732/analysis-of-sealing-ability-of-endodontic-cements-apical-plugs
#2
Bruna Cechella, Josiane de Almeida, Morgane Kuntze, Wilson Felippe
Background: It is unknown whether the bioactivity of Biodentine characterized by the precipitation of hydroxyapatite and formation of tags into the dentinal tubules improve its sealing ability as an apical plug. Aim: To evaluate the sealing ability provided by Biodentine and mineral trioxide aggregate (MTA) apical plugs, with or without phosphate-buffered saline (PBS) intracanal dressing, using a glucose leakage method. Material and Methods: The space of the canal of 100 root segments with about 12 mm long was shaped using Gates-Glidden...
February 2018: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29624627/influence-of-iatrogenic-gaps-cement-type-and-time-on-microleakage-of-cast-posts-using-spectrophotometer-and-glucose-filtration-measurements
#3
Ebtissam M Al-Madi, Samar A Al-Saleh, Reem I Al-Khudairy, Taibah W Aba-Hussein
PURPOSE: To determine the influence of iatrogenic gaps, type of cement, and time on microleakage of cast posts using spectrophotometer and glucose filtration measurements. MATERIALS AND METHODS: Forty-eight single-rooted teeth were divided into eight groups of six teeth each. Teeth were instrumented and obturated, and a cast post was fabricated. In addition to two control groups (positive and negative), a total of six groups were prepared: In four groups, an artificial 2- to 3-mm gap was created between post and residual gutta percha (GP), and two groups were prepared with intimate contact between post and residual GP...
April 6, 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29578300/coronal-microleakage-of-teeth-restored-with-cast-posts-and-cores-cemented-with-four-different-luting-agents-after-thermocycling
#4
Maryam Mohajerfar, Kaveh Nadizadeh, Tabasom Hooshmand, Elaheh Beyabanaki, Hamid Neshandar Asli, Siamak Sabour
PURPOSE: The apical seal provided by a root canal filling may be breached via coronal leakage. This study aimed to compare the teeth restored with custom-made cast metal posts and cores cemented with different luting agents in terms of coronal microleakage after thermocycling. MATERIALS AND METHODS: This in vitro study was conducted on 32 extracted single-canal teeth. Root canals were prepared by step-back technique and filled with gutta percha and sealer. The coronal 7 mm of gutta percha was removed, and post space was prepared using peeso reamers #2 and #3 consecutively...
March 26, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29554265/prospective-multicentre-evaluation-of-a-novel-low-profile-transapical-delivery-system-for-self-expandable-transcatheter-aortic-valve-implantation-6-month-outcomes
#5
Lenard Conradi, Michael Hilker, Jörg Kempfert, Jochen Börgermann, Hendrik Treede, David M Holzhey, Holger Schröfel, Won-Keun Kim, Ulrich Schaefer, Thomas Walther
OBJECTIVES: We assessed the safety and efficacy of a novel low-profile, 22-Fr transapical delivery system together with the ACURATE neo™ resheathable transcatheter heart valve. METHODS: This prospective, single-arm, multicentre study enrolled 60 patients with severe symptomatic aortic stenosis and high surgical risk ineligible for transfemoral access. Primary end points were 6-month mortality and procedural success. RESULTS: The mean age of patients was 79...
March 14, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29504326/evaluation-of-micro-leakage-of-root-canals-filled-with-different-obturation-techniques-an-in-vitro-study
#6
Maham Muneeb Lone, Farhan Raza Khan
BACKGROUND: Despite a plethora of studies done comparing different obturation techniques using gutta-percha, there is no consensus as to which obturation technique results in a 'better' sealing of root canal space. Aims of the study are to compare mean apical micro leakage in root canals of extracted teeth obturated with cold laterally compacted gutta-percha and thermoplasticised injectable gutta-percha using calcium hydroxide based sealer. METHODS: It was an in-vitro experimental study carried out using extracted teeth...
January 2018: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/29483725/-effect-of-acid-etching-of-retropreparation-cavities-on-seal-of-retrofill-materials
#7
K X Xie, Y G Li, P Zhang, X Wang
OBJECTIVE: To evaluate the effect of acid etching of retropreps on seal of different retrofill materials. METHODS: In the study, 80 freshly extracted lower molar teeth were used. They were examined under 3.5× magnifying glass to rull out fractures. They were cleaned and stored in distilled water before use. The distal roots were sectioned off and underwent root canal treatment. Rotary nickel-titanium instruments were used during instrumentation and the roots were obturated using lateral condensation technique...
February 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/29368549/instillation-of-hyaluronan-reverses-acid-instillation-injury-to-the-mammalian-blood-gas-barrier
#8
Ting Zhou, Zhihong Yu, Ming-Yuan Jian, Israr Ahmad, Carol S Trempus, Brant M Wagener, Jean-Francois Pittet, Saurabh Aggarwal, Stavros Garantziotis, Weifeng Song, Sadis Matalon
Acid (HCl) aspiration during anesthesia may lead to acute lung injury. There is no effective therapy. We hypothesized that HCl, instilled intratracheally in C57BL/6 mice results in the formation of low molecular weight hyaluronan (L-HA), which activates RhoA and ROCK, causing airway hyperresponsiveness (AHR) and increased permeability. Furthermore, instillation of high molecular weight hyaluronan (H-HA; Yabro®), will reverse lung injury. We instilled HCl in C57BL/6 wild type, MPO-/- and CD44-/- mice. WT mice were also instilled intranasally with H-HA (Yabro®) at 1 and 23 h post HCl...
January 25, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29290183/comparison-of-retrograde-primary-and-secondary-bonding-materials-with-tooth-substance
#9
Tabinda Nawaz Khan, Syed Yawar Ali Abidi
OBJECTIVE: To compare the microleakage of MTA (mineral trioxide aggregate) and resin-modified GIC (glass ionomer vitremer) as retrograde endodontic material. STUDY DESIGN: Experimental study. PLACE AND DURATION OF STUDY: Operative Department of DIIKIOHS (DUHS) and NED University, Karachi, from February to June 2014. METHODOLOGY: Forty human anterior teeth were divided into four groups. Each tooth was endodontically treated...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29234608/location-of-ruptured-bullae-in-secondary-spontaneous-pneumothorax
#10
Jinseok Choi, Hyo Yeong Ahn, Yeong Dae Kim, Hoseok, Jeong Su Cho, Jonggeun Lee
Background: The surgical treatment of secondary spontaneous pneumothorax (SSP) can be complicated by fragile lung parenchyma. The preoperative prediction of air leakage could help prevent intraoperative lung injury during manipulation of the lung. Common sites of bulla development and ruptured bullae were investigated based on computed tomography (CT) and intraoperative findings. Methods: The study enrolled 208 patients with SSP who underwent air leak control through video-assisted thoracoscopic surgery (VATS)...
December 2017: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29199333/-study-on-the-sealing-ability-of-biological-root-canal-sealer-iroot-sp-in-root-canal-filling
#11
Ning Zhang, Xin Li, Lei-Ying Miao, Juan Wu, Chao Liu, Wei-Dong Yang
PURPOSE: To investigate the sealing ability of biological root canal sealer iRoot SP in over-root canal filling. METHODS:After completion of root canal preparation, 48 extracted human single-canal teeth were used. The ratio of mesio-distal root canal diameter to bucco-lingual diameter was less than 0.5. The teeth were randomly divided into group A, B and C. The root canals were obturated with root canal filling agent (group A), AH Plus (group B) and iRoot SP (group C), respectively; the apical leakage was evaluated by dye penetration method and transparent teeth technique...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29167707/solubility-and-ph-of-bioceramic-root-canal-sealers-a-comparative-study
#12
Claudio Poggio, Alberto Dagna, Matteo Ceci, Maria-Vittoria Meravini, Marco Colombo, Giampiero Pietrocola
Background: This study compared the solubility and the pH of different root canal sealers in vitro . Material and Methods: BioRoot™RCS, TotalFill BC Sealer, MTA Fillapex, SealapexTM, AH Plus, EasySeal, Pulp Canal Sealer™ and N2 were tested. Similar specimens were prepared using ring molds with an internal diameter of 20 ± 0,1 mm and a height of 1,5 ± 0,1 mm and digitally weighted to register the mass of each specimen before and after immersion in distilled water...
October 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29026696/the-effect-of-chlorhexidine-mixed-with-mineral-trioxide-aggregate-on-bacterial-leakage-of-apical-plug-in-simulated-immature-teeth-using-human-fresh-saliva
#13
Gholamhossein Ramezani, Sohrab Tour Savadkouhi, Sahar Sayahpour
OBJECTIVES: Apexification is a challenging treatment in necrotic open apices teeth and bacterial leakage is the main reason for the treatment failure. The aim of this study is to compare the effect of mixing mineral trioxide aggregate (MTA) with chlorhexidine (CHX) on microbial leakage in apexification treatment of simulated immature teeth. MATERIALS AND METHODS: In this experimental study, 44 intact central incisors were selected based on inclusion criteria. The coronal and 2 mm of apical part of the specimens were removed till all root segments were 12 mm long...
September 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28993506/kidney-proximal-tubule-lipoapoptosis-is-regulated-by-fatty-acid-transporter-2-fatp2
#14
Shenaz Khan, Pablo D Cabral, William P Schilling, Zachary W Schmidt, Asif N Uddin, Amelia Gingras, Sethu M Madhavan, Jeffrey L Garvin, Jeffrey R Schelling
Albuminuria and tubular atrophy are among the highest risks for CKD progression to ESRD. A parsimonious mechanism involves leakage of albumin-bound nonesterified fatty acids (NEFAs) across the damaged glomerular filtration barrier and subsequent reabsorption by the downstream proximal tubule, causing lipoapoptosis. We sought to identify the apical proximal tubule transporter that mediates NEFA uptake and cytotoxicity. We observed transporter-mediated uptake of fluorescently labeled NEFA in cultured proximal tubule cells and microperfused rat proximal tubules, with greater uptake from the apical surface than from the basolateral surface...
January 2018: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28989122/comparison-of-microleakage-of-class-v-cavities-restored-with-the-embrace-wetbond-class-v-composite-resin-and-conventional-opallis-composite-resin
#15
Maryam Tavangar, Zahra Zohri, Hosein Sheikhnezhad, Shahrzad Shahbeig
PURPOSE: This study was undertaken to compare the micro-leakage of class V cavities restored with the newly introduced Embrace WetBond class V (EWC) composite resin and conventional Opallis composite resin. MATERIALS AND METHODS: In this in vitro study, class V cavities were prepared on 30 extracted bovine incisors, with the gingival floor and the coronal margin of the cavities 1 mm apical and coronal to the cementoenamel junction (CEJ) respectively. The cavities measured 3 mm in length, 2 mm in width, and 1...
October 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28855753/comparative-evaluation-of-apical-microleakage-in-immediate-and-delayed-postspace-preparation-using-four-different-root-canal-sealers-an-in-vitro-study
#16
Prabeesh Padmanabhan, Joydeep Das, R Veena Kumari, P R Pradeep, Ankur Kumar, Sneha Agarwal
BACKGROUND: Endodontically treated teeth often lack sufficient support for a permanent restoration. During post space preparation, it is important not to disturb the integrity of the apical seal. AIM: This study compared the effect of immediate versus delayed post space preparation on the apical seal using four different sealers. MATERIALS AND METHODS: One hundred and thirty single rooted teeth were biomechanically prepared and obturated with single cone gutta-percha and 4 sealers: Endoflas FS, AH Plus, Gutta flow and MTA...
March 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/28828158/comparative-evaluation-of-the-apical-sealing-ability-of-a-ceramic-based-sealer-and-mta-as-root-end-filling-materials-an-in-vitro-study
#17
Bhavana Gandhi, Ramesh Halebathi-Gowdra
BACKGROUND: The present study was aimed to evaluate and compare the apical sealing ability of two endodontic root-end filling materials namely, iRoot SP (ceramic based) and ProRoot MTA using the bacterial leakage system. MATERIAL AND METHODS: A total of fifty recently extracted, single rooted teeth with a single straight canal were selected for the study. The teeth were chemo mechanically prepared. The apical 3mm of the root was resected and root end cavities were prepared...
July 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28728241/-petrous-bone-cholesteatoma-surgery-approach-and-outcomes
#18
R Y Wang, W J Han, T Zhang, W D Shen, J Liu, P Dai, S M Yang, D Y Han
Objective: To investigate the choice of surgical approach of petrous bone cholesteatoma (PBC)and surgical outcomes. Methods: A retrospective study was performed on 90 patients diagnosed and treated for PBC from January 2000 to December 2014 by the Chinese People's Liberation Army General Hospital otolaryngologists. According to Sanna's classification, 40 out of the 90 cases were supralabyrinthine, five infralabyrinthine, four infralabyrinthine-apical, 25 massive and 16 apical. Five cases underwent transmastoid and retrolabyrinthine approach, translabyrinthine approach was performed on six patients, 19 cases underwent subtotal petrosectomy, seven cases underwent transotic approach, 41 cases underwent middle fossa approach, combined transmastoid/middle fossa approach was performed on 11 cases, translabyrinthine and sphenoid sinus approach were performed on one case...
July 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28682281/microleakage-of-class-ii-composite-resin-restorations-with-self-adhesive-composite-resin-liners
#19
Maryam Doozandeh, Fereshteh Shafiei, Fatemeh Mohammadi
This study investigated the microleakage of Class II composite restorations with composite resin liners. Standardized box cavities were prepared on the mesial and distal surfaces of 84 extracted intact human molars. Proximal margins were located in enamel (occlusal) and 1.0 mm apical to the cementoenamel junction (gingival). The teeth were randomly divided into 6 groups (n = 28 cavities) and restored with Filtek Z350 nanohybrid composite resin (FZ). The test groups were lined with a conventional flowable composite resin, Premise Flowable (PF), or 1 of 2 self-adhesive composites (SACs): Vertise Flow (VF) or Clearfil SA luting cement (CSA) with or without their respective self-etching adhesives: Optibond All-in-One (OB) or Clearfil SE Bond (CSE)...
July 2017: General Dentistry
https://www.readbyqxmd.com/read/28638561/importance-and-methodologies-of-endodontic-microleakage-studies-a-systematic-review
#20
REVIEW
Farnaz Jafari, Sanaz Jafari
INTRODUCTION: It is very important to obtain a tight seal in obturated root canal, making it necessary to conduct clinical or laboratory studies on the sealability of endodontic materials. Different methodologies have been historically used to assess microleakage of different endodontic materials. The aim of the present study was to comprehensively review different material testing methods used in microleakage studies, their interpretation and importance in endodontic literature. MATERIAL AND METHODS: A systematic search was conducted in Medline, Cochrane, and Web of Science databases...
June 2017: Journal of Clinical and Experimental Dentistry
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