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https://www.readbyqxmd.com/read/29792021/evaluation-of-tooth-discolouration-after-the-use-of-experimental-medication-as-root-canal-dressings-an-in-vitro-study
#1
Lorena O Mendes, Nathália E Machado, Paulo R Goldoni, Graziela G Mori
BACKGROUND: Endodontic infections require the use of root canal dressings to reduce microorganisms, and studies of new intracanal medications are common. Two experimental intracanal medications that contain antibiotics and chlorhexidine have been proposed. However, given the composition of these medications, tooth discolouration with subsequent impacts on aesthetic parameters is a concern. The objective of this study is to evaluate tooth discolouration after the use of experimental intracanal medications for up to 180 days...
May 23, 2018: Minerva Stomatologica
https://www.readbyqxmd.com/read/29791567/immunohistological-study-of-the-effect-of-vascular-endothelial-growth-factor-on-the-angiogenesis-of-mature-root-canals-in-rat-molars
#2
Cleber Keiti Nabeshima, José Edgar Valdivia, Hector Caballero-Flores, Victor Elias Arana-Chavez, Manoel Eduardo de Lima Machado
Tissue bioengineering has been applied to Endodontics to seek a more biological treatment. The presence of blood vessels is crucial for cell nutrition during tissue formation. Objective This study analysed the application of vascular endothelial growth factor (VEGF) in the angiogenesis of mature root canals. Material and methods Upper first molars of twelve 13-week old Wistar male rats were used. The root pulp of the mesiobuccal canal was removed and the root canal instrumented with K-files up to size #25. Periapical bleeding was induced into the root canal by introducing a #15 K-file beyond the apex...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29786880/metagenomic-study-of-bacterial-microbiota-in-persistent-endodontic-infections-using-next-generation-sequencing
#3
G Sánchez-Sanhueza, H Bello-Toledo, G González-Rocha, A T Gonçalves, V Valenzuela, C Gallardo-Escárate
AIM: To determine the bacterial microbiota in root canals associated with persistent apical periodontitis and their relationship with the clinical characteristics of patients using next-generation sequencing (NGS). METHODOLOGY: Bacterial samples from root canals associated with teeth having persistent apical periodontitis were taken from 24 patients undergoing root canal retreatment. Bacterial DNA was extracted, and V3-V4 variable regions of the 16S rRNA gene were amplified...
May 22, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29785164/endodontic-management-of-mandibular-second-premolar-with-three-canals
#4
Bonny Paul, Kavita Dube
Mandibular premolar can present a complex pulp anatomy. Apart from the usual single root and single canal a many other variations may be seen. Hence not only a thorough knowledge of the root canal anatomy but also it's variations are indispensable pre requisites for the success of any endodontic treatment. Good magnification and CBCT scans will definitely be beneficial for successful endodontic treatment. The present case provides evidence that mandibular premolars may have more than one canal.
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29785163/management-of-intrinsic-discoloration-using-walking-bleach-technique-in-maxillary-central-incisors
#5
Sanket Hans Pandey, Pallav Mahesh Patni, Pradeep Jain, Arpita Chaturvedi
Introduction: Non-vital bleaching is a non-invasive technique to treat the intrinsic discoloration of teeth of several etiologies. Hydrogen peroxide and sodium perborate are commonly used bleaching agents. Aim: The aim of this case report is to demonstrate the non-vital bleaching technique in maxillary anterior teeth. Method: Maxillary central incisors were isolated with rubber dam and root canal treatment was performed. Barrier space preparation was done using a heated instrument...
2018: Clujul Medical (1957)
https://www.readbyqxmd.com/read/29780745/impact-of-minimal-root-canal-taper-on-the-fracture-resistance-of-endodontically-treated-bicuspids
#6
Carla Zogheib, Germain Sfeir, Gianluca Plotino, Gustavo De Deus, Maha Daou, Issam Khalil
Objective: Minimal invasive endodontics preserve coronal and radicular tooth structure to increase the fracture resistance of teeth. The aim of this study was to assess the influence of final preparation taper on the fracture resistance of maxillary premolars. Materials and Methods: Sixty maxillary premolars were selected and divided into 2 groups: 30 were shaped with a final apical diameter 30 and a 4% taper and 30 with 6% taper using iRaCe® instrument (FKG dentaire, Switzerland)...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780734/antimicrobial-efficacy-of-different-endodontic-sealers-against-enterococcus-faecalis-an-in-vitro-study
#7
Swati Dalmia, Abhidnya Gaikwad, Roshan Samuel, Gayatri Aher, Meenal Gulve, Swapnil Kolhe
Objective: The aim of this in vitro study is to compare the antimicrobial efficacy of four different endodontic sealers against Enterococcus faecalis . Material and Method: Four different endodontic sealers, namely, resin based (AH Plus), zinc oxide-eugenol based (Tubliseal), calcium hydroxide based (Sealapex), and mineral trioxide aggregate (MTA Fillapex) based were tested for their antimicrobial efficacy against E. faecalis using agar diffusion method. Four wells were made by the removal of agar at equidistant points and filled with freshly mixed respective root canal sealers and were inoculated with E...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29779290/-maxillary-first-premolar-with-four-canals-a-case-report
#8
Yang Meng, De-Gang Sun
This article presented a case of discovering and diagnosing three roots with four canals of the maxillary first premolar. We found and located the extra root canal by clinical diagnosis, careful observation during the operation, and multiangle X-ray. We further confirmed the existence of the three roots with four canals with the help of cone-beam computed tomography. Finally, we verified the success of the high-quality root-canal therapy through root optical microscopy.
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29779278/-time-lapse-between-endodontic-and-periodontal-treatments-of-combined-periodontal-endodontic-lesion-a-systematic-review
#9
Yue Jin, Bin Chen, Yan-Hong Ni, Fu-Hua Yan
OBJECTIVE: This study aims to evaluate the time lapse between the endodontic and periodontal treatments of the combined periodontal-endodontic lesion to guide the clinical treatment. METHODS: A systemic literature search was performed in articles published from 1980 to March 2017 using the electronic databases, including PubMed, EMbase, Cochrane, Web of Science, CNKI, CBM, and Wanfang Databases. RESULTS: After screening, two randomized controlled trials, two prospective case series studies, and eight case reports were ultimately included...
April 1, 2018: Hua Xi Kou Qiang Yi Xue za Zhi, Huaxi Kouqiang Yixue Zazhi, West China Journal of Stomatology
https://www.readbyqxmd.com/read/29777391/shaping-ability-of-reciprocating-single-file-systems-in-severely-curved-canals-waveone-and-reciproc-versus-waveone-gold-and-reciproc-blue
#10
Sebastian Bürklein, Stefanie Flüch, Edgar Schäfer
The aim was to compare the canal straightening of M-wire [Reciproc (VDW, Munich, Germany) and WaveOne (Dentsply Maillefer, Ballaigues, Switzerland)] and gold- and blue-wire heat-treated [Reciproc blue (VDW) and WaveOne Gold (Dentsply Maillefer)] instruments in severely curved root canals. A total of 80 root canals in extracted human teeth with angles of curvatures ranging between 25° and 35° and radii ranging between 3.1 and 8.5 mm were divided into four groups (n = 20). Based on radiographs taken prior to instrumentation, the groups were balanced with respect to the angle and the radius of canal curvature (P = 1...
May 18, 2018: Odontology
https://www.readbyqxmd.com/read/29775860/a-cone-beam-computed-tomography-study-of-the-mesial-cervical-concavity-of-maxillary-first-premolars
#11
Linfeng Fan, Keyong Yuan, Chenguang Niu, Rui Ma, Zhengwei Huang
OBJECTIVE: To investigate the mesial cervical concavity of maxillary first premolars and its relationship with root and canal configuration using cone-beam computed tomography (CBCT). DESIGN: Images of maxillary first premolars (n = 1056) were collected from patients (n = 601) who had undergonein vivo CBCT scanning. The root and canal number and morphology were evaluated. The following measurements of the mesial cervical concavity of the maxillary first premolars were evaluated in section images: dentine thickness (in concavity at the cemento-enamel junction), concavity angle, depression depth (distance from mesial dentinal surface at concavity to mesial proximity), concavity position (distance from mesial dentinal wall at invagination to the top of the mesial marginal ridge)...
May 7, 2018: Archives of Oral Biology
https://www.readbyqxmd.com/read/29774548/release-of-tgf-%C3%AE-1-into-root-canals-with-various-final-irrigants-in-regenerative-endodontics-an-in-vitro-analysis
#12
Y Chae, M Yang, J R Kim
AIM: To investigate the release of growth factors into the root canal space after various final irrigants during regenerative endodontic procedures. The residual cytotoxic effect of final irrigants on stem cells from the apical papilla (SCAP) was also examined. METHODOLOGY: To measure the release of TGF-β1, root segments (8mm long) were irrigated with 1.5% NaOCl followed by 20 mL of final irrigants; Saline, 17% EDTA, 10% citric acid, 10% or 37% phosphoric acid...
May 17, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29772080/substance-p-and-calcitonin-gene-related-peptide-expression-in-human-periodontal-ligament-after-root-canal-preparation-with-reciproc-blue-waveone-gold-xp-endoshaper-and-hand-files
#13
J Caviedes-Bucheli, N Rios-Osorio, M Rey-Rojas, F Laguna-Rivero, M M Azuero-Holguin, L E Diaz, H Curtidor, J J Castaneda-Ramirez, H R Munoz
AIM: To quantify the Substance P (SP) and Calcitonin gene-related peptide (CGRP) expression in healthy human periodontal ligament from premolars after root canal preparation with Reciproc Blue, WaveOne Gold, XP EndoShaper and hand files. METHODOLOGY: Fifty human periodontal ligament samples were obtained from healthy mandibular premolars where extraction was indicated for orthodontic reasons. Prior to extraction, 40 of these premolars were equally divided into four groups, and root canals were prepared using four different systems: Reciproc Blue, WaveOne Gold, XP EndoShaper, and a hand instrumentation technique...
May 17, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29768091/effect-of-830-nm-diode-laser-irradiation-of-root-canal-on-bond-strength-of-metal-and-fiber-post
#14
Claudia Strefezza, Marcello Magri Amaral, José Quinto, Sheila Cynthia Gouw-Soares, Claudia Bianchi Zamataro, Denise Maria Zezell
OBJECTIVE AND BACKGROUND: The correct selections of the cementing agent, the endodontic post material and placement protocol are critical to provide an increased longevity of the teeth that went through endodontic treatment. The irradiation with diode laser before post cementation, can promote an antimicrobial effect. However, there is a lack of information about the effect of 830 nm diode laser on the post bond strength. This study analyzed the effect of dentin root canal irradiation with high-intensity diode laser, at 830 nm, operating in continuous or pulsed mode, on the retention of metal or fiber posts, cemented with self-etching resinous composite (Panavia F) and zinc phosphate cement (ZnPO4 )...
May 16, 2018: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/29765897/anatomical-analysis-of-the-resected-roots-of-mandibular-first-molars-after-failed-non-surgical-retreatment
#15
Jiyoung Yoon, Byeong-Hoon Cho, Jihyun Bae, Yonghoon Choi
Objectives: Understanding the reason for an unsuccessful non-surgical endodontic treatment outcome, as well as the complex anatomy of the root canal system, is very important. This study examined the cross-sectional root canal structure of mandibular first molars confirmed to have failed non-surgical root canal treatment using digital images obtained during intentional replantation surgery, as well as the causative factors of the failed conventional endodontic treatments. Materials and Methods: This study evaluated 115 mandibular first molars...
May 2018: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/29765439/radiographic-features-of-anatomic-relationship-between-impacted-third-molar-and-inferior-alveolar-canal-on-coronal-cbct-images-risk-factors-for-nerve-injury-after-tooth-extraction
#16
Dongmiao Wang, Tangyi Lin, Yanling Wang, Chao Sun, Lianfeng Yang, Hongbing Jiang, Jie Cheng
Introduction: The present study was aimed to identify the radiographic signs between impacted third molar root and inferior alveolar canal (IAC) on cone-beam CT (CBCT) images as risk factors and prognostic predictors associated with inferior alveolar nerve (IAN) damage following tooth removal. Material and methods: A retrospective clinical study was performed involving 136 patients with 257 impacted lower third molars from January 2013 to December 2014. The neurosensory function of the lower lip and chin was subjectively evaluated and assessed by neurosensory tests before and after surgery...
April 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29763357/comparative-evaluation-of-endovac-and-conventional-irrigating-syringe-on-apical-extrusion-in-primary-molars-an-in-vitro-study
#17
Nilaya Reddy Venumbaka, Porselvi Baskaran, Jayanthi Mungara, Madhan Chenchugopal, Arun Elangovan, Poornima Vijayakumar
OBJECTIVES: The present study was undertaken to evaluate and compare the apical extrusion of irrigant and depth of irrigant penetration into dentine using the EndoVac irrigating system and manual irrigation system in primary molar teeth. STUDY DESIGN: Twenty five extracted primary molars satisfying the inclusion and exclusion criteria were divided into two groups with 29 roots in each group with an equal distribution of apical foramen area. The teeth were mounted in pre-weighed glass bottles and the canals were irrigated with 5...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29763345/tissue-engineering-of-necrotic-dental-pulp-of-immature-teeth-with-apical-periodontitis-in-dogs-radiographic-and-histological-evaluation
#18
Eman A El Ashiry, Najlaa M Alamoudi, Mahmoud K El Ashiry, Hagar A Bastawy, Douaa A El Derwi, Hazem M Atta
AIM: To evaluate tissue engineering technology to regenerate pulp-dentin like tissues in pulp canals of immature necrotic permanent teeth with apical periodontitis in dogs. STUDY DESIGN: The study was performed on 36 teeth in 12 dogs. The experiment was carried out using split mouth design. In each dog 3 teeth were selected for implementing the study procedure. Apical periodontitis was induced in Group A and B teeth. Group (A): immature upper left 2nd permanent incisors that were transplanted with a construct of autologous dental pulp stem cells with growth factors seeded in a chitosn hydrogel scaffold...
May 15, 2018: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/29756670/the-influence-of-post-system-design-and-material-on-the-biomechanical-behavior-of-teeth-with-little-remaining-coronal-structure
#19
Cristiano Lazzari Pinto, Claudia Lopes Brilhante Bhering, Gabriel Rodrigues de Oliveira, Angélica Maroli, Vagner Flávio Reginato, Ricardo Armini Caldas, Atais Bacchi
PURPOSE: To evaluate the influence of different post systems on the biomechanical behavior of teeth with a severe loss of remaining coronal structure. MATERIALS AND METHODS: Fifty standardized bovine teeth (n = 10 per group) were restored with: cast post-and-core (CPC), prefabricated metallic post (PFM), parallel glass-fiber post (P-FP), conical glass-fiber post (C-FP), or composite core (no post, CC). The survival rate during thermomechanical challenging (TC), the fracture strength (FS), and failure patterns (FP) were evaluated...
May 14, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29756274/niti-loss-on-the-dentinal-walls-and-instrument-deformation-during-root-canal-preparation
#20
Carolina Fabiana Centenaro, Fabiana Soares Grecca, Patrícia Maria Poli Kopper, Rodrigo Ricci Vivan, Jefferson Ricardo Pereira, Ricardo Abreu da Rosa, Paula Barcellos da Silva, Marcus Vinícius Reis Só
The purpose of this study was to quantify the presence of nickel (Ni) and titanium (Ti) on dentin walls of prepared root canals using Endosequence (ES) and Wave One (WO) systems, the deformation, and fracture of these instruments. Thirty extracted human premolar teeth were selected and prepared with WO, ES, and manually (control group-CG). Each instrument was used in four root canals. The root canals were irrigated with 2.5% sodium hypochlorite solution. After preparation, roots were sectioned longitudinally and the apical third was analyzed by scanning electron microscopy with X-ray microanalysis (SEM-EDS)...
May 13, 2018: Microscopy Research and Technique
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