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https://www.readbyqxmd.com/read/28439952/comparison-of-cytotoxicity-genotoxicity-and-immunological-inflammatory-biomarker-activity-of-several-endodontic-sealers-against-immortalized-human-pulp-cells
#1
F C Martinho, S E A Camargo, A M M Fernandes, M S Campos, R F Prado, C H R Camargo, M C Valera
AIM: To establish an SV40 T-Ag-transfected cell line of human pulp-derived cells in order to compare the cytotoxicity, genotoxicity and to investigate the activities of immunological biomarkers of several endodontic sealers. METHODOLOGY: Primary human pulp cells and transfected cells were cultured. Cell morphology and proliferation were analyzed, and the expression of cell-specific gene transcripts and proteins was detected by RT-PCR and immunohistochemistry. Transfection of human pulp-derived cells resulted in an immortalized cell line retaining phenotypic characteristics from the primarily cells tested...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28439906/regenerative-endodontic-treatment-of-perforated-internal-root-resorption-a-case-report
#2
M E Kaval, P Güneri, M K Çalışkan
AIM: To present the regenerative endodontic treatment procedure of a perforated internal root resorption case and its' clinical and radiographic findings after two years. SUMMARY: A 14-year-old female patient was referred complaining of moderate pain associated with her maxillary left lateral incisor. After radiographic examination, a perforated internal resorption lesion in the middle third of tooth 22 was detected. Under local anaesthesia and rubber dam isolation, an access cavity was prepared and the root canal was shaped using K-files under copious irrigation with 1% NaOCl, 17% EDTA and distilled water...
April 25, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28435364/influence-of-reuse-and-cervical-preflaring-on-the-fracture-strength-of-reciprocating-instruments
#3
Claudio Maniglia-Ferreira, Fabio de Almeida Gomes, Tatyana Ximenes, Murilo Alves Teixeira Neto, Thiane Elys Arruda, Giovani Gonçalves Ribamar, Luis Flávio Gaspar Herculano
OBJECTIVE: This study sought to assess the influence of cervical preflaring and reuse after resterilization, on fracture strength and plastic deformation and/or surface cracking in reciprocating nickel-titanium [NiTi] endodontic instruments after root canal instrumentation of extracted human teeth. MATERIALS AND METHODS: Forty engine-driven reciprocating NiTi instruments (20 Reciproc(®) [RC], VDW; 20 WaveOne(®) [WO], Dentsply) were used in root canal instrumentation of extracted human molars...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28435360/the-confidence-of-undergraduate-dental-students-in-saudi-arabia-in-performing-endodontic-treatment
#4
Mothanna Alrahabi
OBJECTIVE: This study examined the endodontic experience, perceptions of endodontic practice, and self-rated confidence of dental students enrolled in Taibah University, Saudi Arabia. MATERIALS AND METHODS: A questionnaire was distributed to 41 undergraduate dental students registered in endodontic courses in the 2015 academic year. The questionnaire evaluated their confidence performing nonsurgical root canal treatment. The level of confidence was classified using a 5-point scale as "very confident," "confident," "neutral," "not very confident," or "not at all confident...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28435359/comparative-antimicrobial-efficacy-of-selected-root-canal-irrigants-on-commonly-isolated-microorganisms-in-endodontic-infection
#5
Sandeep Dubey, Suparna Ganguly Saha, Balakrishnan Rajkumar, Tapan Kumar Dhole
OBJECTIVE: This study aims to evaluate and compare the antimicrobial efficacy of three selected root canal irrigants (BioPure MTAD, metronidazole, aztreonam) against microbes commonly isolated from polymicrobial microbiota of root canal infection. MATERIALS AND METHODS: This study was designed with four experimental groups (Group I - Bacteroides fragilis, Group II - Propionibacterium acnes, Group III - Enterococcus faecalis, Group IV - Candida albicans) based on the microbes selected for the study...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28426292/efficacy-of-three-different-lasers-on-eradication-of-enterococcus-faecalis-and-candida-albicans-biofilms-in-root-canal-system
#6
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
https://www.readbyqxmd.com/read/28424663/antimicrobial-photodynamic-therapy-against-endodontic-enterococcus-faecalis-and-candida-albicans-mono-and-mixed-biofilms-in-the-presence-of-photosensitizers-a-comparative-study-with-classical-endodontic-irrigants
#7
Patrícia Diogo, Chantal Fernandes, Francisco Caramelo, Marta Mota, Isabel M Miranda, M A F Faustino, M G P M S Neves, Marciana P Uliana, Kleber T de Oliveira, João M Santos, Teresa Gonçalves
Endodontic biofilms eradication from the infected root canal system remains as the primary focus in endodontic field. In this study, it was assessed the efficacy of antimicrobial Photodynamic Therapy (aPDT) with the Zn(II)chlorin e6 methyl ester (Zn(II)e6Me) activated by red light against monospecies and mixed biofilms of Enterococcus faecalis and Candida albicans. The results were compared with the ones obtained with Rose Bengal (RB), Toluidine Blue-O (TBO), the synthetic tetracationic porphyrin (TMPyP) as well as classical endodontic irrigants (3% NaOCl, 17% EDTA and 2% CHX)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28422594/intentional-replantation-of-an-immature-incisor-with-a-transverse-root-fracture-and-endo-perio-condition-4-year-follow-up
#8
Atsushi Oishi
This case report describes the importance of continual examination for dental trauma and the efficacy of intentional replantation with retrograde root canal filling for a transverse root fracture in an immature incisor accompanied by subsequent periodontal-endodontic disease. In the treatment of traumatically fractured roots in immature incisors, continual examination is indispensable for the final diagnosis because roots in immature teeth are less calcified, resulting in less detailed radiological examinations...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28417452/worldwide-pattern-of-antibiotic-prescription-in-endodontic-infections
#9
REVIEW
Juan José Segura-Egea, Jenifer Martín-González, María Del Carmen Jiménez-Sánchez, Isabel Crespo-Gallardo, Juan José Saúco-Márquez, Eugenio Velasco-Ortega
BACKGROUND: Odontogenic infections, and especially endodontic infections, are polymicrobial, involving a combination of Gram-positive and Gram-negative facultative anaerobes and strictly anaerobic bacteria. Therefore, antibiotics can be used as an adjunct to endodontic treatment. However, most chronic and even acute endodontic infections can be successfully managed by disinfection of the root-canal system, which eliminates the source of infection, followed by abscess drainage or tooth extraction, without the need for antibiotics...
April 17, 2017: International Dental Journal
https://www.readbyqxmd.com/read/28416319/feasibility-of-cone-beam-computed-tomography-in-detecting-lateral-canals-before-and-after-root-canal-treatment-an-ex%C3%A2-vivo-study
#10
Thiago Oliveira Sousa, Bassam Hassan, Hesam Mirmohammadi, Hagay Shemesh, Francisco Haiter-Neto
INTRODUCTION: The study objective was to evaluate the effectiveness of cone-beam computed tomographic (CBCT) imaging for the detection of lateral canals (LCs) in endodontically treated premolars. METHODS: Two evaluators classified 80 extracted premolars into 2 groups based on the absence (n = 40) or presence (n = 40) of LCs according to micro-computed tomographic analysis. The extracted teeth were fixated in a human mandible and scanned with CBCT imaging. Subsequently, each tooth was endodontically treated, and CBCT scans were repeated...
April 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28416311/complicated-root-canal-configuration-of-mandibular-first-premolars-is-correlated-with-the-presence-of-the-distolingual-root-in-mandibular-first-molars-a-cone-beam-computed-tomographic-study-in-taiwanese-individuals
#11
Yu-Chiao Wu, Chi-Chun Su, Yi-Wen Cathy Tsai, Wan-Chien Cheng, Ming-Pang Chung, Ho-Sheng Chiang, Chen-Yu Hsieh, Chi-Hsiang Chung, Yi-Shing Shieh, Ren-Yeong Huang
INTRODUCTION: The purpose of this study was to examine the frequency and bilateral consistency of distolingual roots (DLRs) in permanent mandibular first molars (PMFMs) and root canal configurations in PMFPs (permanent mandibular first premolars) and to determine the correlation between the root canal configurations of PMFPs with the appearance of DLRs in PMFMs. METHODS: A total of 932 cone-beam computed tomographic images of PMFMs and PMFPs were collected from 233 patients...
April 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28416307/the-efficacy-of-the-waveone-reciprocating-file-system-versus-the-protaper-retreatment-system-in-endodontic-retreatment-of-two-different-obturating-techniques
#12
Ben Jorgensen, Anne Williamson, Rene Chu, Fang Qian
INTRODUCTION: This ex vivo study aimed to evaluate the efficacy of retreating GuttaCore (Dentsply Tulsa Dental Specialties, Tulsa, OK) and warm vertically condensed gutta-percha in moderately curved canals with 2 different systems: ProTaper Universal Retreatment (Dentsply Tulsa Dental) and WaveOne (Dentsply Tulsa Dental). METHODS: Eighty mesial roots of mandibular molars were used in this study. The mesiobuccal canals in each sample were prepared to length with the WaveOne Primary file (Dentsply Tulsa Dental)...
April 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28416302/effect-of-bacterial-biofilm-on-the-osteogenic-differentiation-of-stem-cells-of-apical-papilla
#13
Lakshmi Vishwanat, Rose Duong, Koyo Takimoto, Linda Phillips, Claudia O Espitia, Anibal Diogenes, Shivani B Ruparel, David Kolodrubetz, Nikita B Ruparel
INTRODUCTION: Although clinical success in regenerative endodontics is substantially high, histological success is limited to finding bone/cementum-like tissue instead of dentin within the canal space. The aims of this study were to investigate (1) the effect of bacterial biofilm on osteogenic gene expression in stem cells of the apical papilla (SCAP) and (2) the effect of bacterial antigens on the functional differentiation of SCAP into a mineralizing phenotype. METHODS: Using an ex vivo organotypic root canal model and an American Association of Endontists-recommended regenerative endodontic procedures, we evaluated SCAP differentiation in the presence and absence of an Enterococcus faecalis biofilm...
April 14, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28415948/use-of-platelet-rich-plasma-for-regeneration-in-non-vital-immature-permanent-teeth-clinical-and-cone-beam-computed-tomography-evaluation
#14
Adel Alagl, Sumit Bedi, Khalid Hassan, Jehan AlHumaid
Objective This study was performed to assess the clinical and radiological outcomes of a revascularization procedure in immature teeth with apical periodontitis using platelet-rich plasma (PRP). The PRP protocol and conventional revascularization protocol, which used a blood clot as the scaffold, were compared. Methods Thirty non-vital immature permanent teeth were randomly categorized into two groups. After disinfecting the root canal space with triple antibiotic paste (1:1:1 ciprofloxacin, metronidazole, and cefaclor), a tissue scaffold was created using either PRP or a blood clot (control) and covered with white mineral trioxide aggregate...
April 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28413595/effect-of-retreatment-on-the-push-out-bond-strength-of-mta-based-and-epoxy-resin-based-endodontic-sealers
#15
Hamidreza Yavari, Shahriar Shahi, Saeedeh Galledar, Mohammad Samiei, Maryam Janani
Background. Further studies on the adhesion properties of MTA-based materials seem necessary due to their growing use in endodontic treatment. This research aimed to assess the effect of retreatment on the bond strength of MTA-based (MTA Fillapex) and epoxy resin-based (AH Plus) sealers. Methods. ProTaper rotary files were applied to prepare the root canals of 80 human mandibular premolars. Then, the roots were randomly divided intotwo groups of A (n=40) and B (n=40), which were obturated with gutta-percha and MTA Filla-pex and AH Plus sealer, respectively...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/28397949/prevalence-of-apical-periodontitis-and-quality-of-root-canal-treatment-in-an-adult-saudi-population
#16
Saad A Al-Nazhan, Suliman A Alsaeed, Hussan A Al-Attas, Abdullah J Dohaithem, Mohamed S Al-Serhan, Nassr S Al-Maflehi
To determine the health status of periradicular tissue and the quality of root canal fillings in an adult Saudi population attending dental clinics for the first time. Methods: This cross sectional study was conducted  in the dental clinics at King Saud University, Riyadh and other dental centers (Jeddah, Najran, and Albaha City), Kingdom of Saudi Arabia between year 2010   and 2012. Good-quality panoramic radiographs of 926 Saudi subjects (540 males and 386 females)were analyzed based on the gender, age, health status, smoking habits, periapical status of the endodontically treated teeth, technical quality of the root canal fillings, and the presence or absence of coronal restoration...
April 2017: Saudi Medical Journal
https://www.readbyqxmd.com/read/28394240/effect-of-laser-activated-irrigations-on-smear-layer-removal-from-the-root-canal-wall
#17
Xiaoli Wang, Xiaogang Cheng, Baogang Liu, Xin Liu, Qing Yu, Wenxi He
OBJECTIVE: The purpose of this study was to evaluate the effect of laser-activated irrigations (LAI) by using the Erbium: Yttrium Aluminum Garnet (Er:YAG) laser and the Erbium Chromium: Yttrium Scandium Gallium Garnet (Er,Cr:YSGG) laser on removing smear layer (SL) from the root canal wall. BACKGROUND DATA: LAI has been proposed as an adjuvant to conventional protocols of endodontic treatment to enhance the disinfection, which is a promising protocol for SL removal...
April 5, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28393819/morphology-of-root-canal-surface-a-reflection-on-the-process-of-cementation-of-the-composite-relined-glass-fiber-post
#18
Yasmine Mendes Pupo, Elaine Casacqui, Paola Andressa Barbosa de Lima, Milton Domingos Michél, Albano Luis Novaes Bueno, André Luiz da Costa Michelotto
BACKGROUND: The present study was conducted to evaluate the bond strength in the different root thirds (premolars and maxillary central incisors) of composite relined glass fiber posts compared to untreated glass fiber posts cemented with dual- or chemical-cure cements. MATERIALS AND METHODS: Sixty human single-rooted premolars (flat canal) (n = 15) and 12 maxillary central incisors were used (round canal) (n = 3). The teeth were sectioned, and the roots received endodontic treatment...
January 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28390451/a-comparative-volumetric-evaluation-of-four-obturating-techniques-in-primary-teeth-using-cone-beam-computed-tomography
#19
Aparna Singh, Nidhi Gupta, Nidhi Agarwal, Dipanshu Kumar, Ashish Anand
PURPOSE: To compare the volume of root canals of primary teeth filled by four different obturating techniques: (1) lentulospiral (LS); (2) insulin syringe (IS); (3) endodontic pressure syringe (EPS); and (4) the NaviTip system (NS) using cone beam computed tomography (CBCT). METHODS: 76 root canals of primary posterior teeth were selected and divided into four groups, according to the obturation technique. Biomechanical preparation of each root canal was completed with a number 30 K-file, and the volumes of the canals were then measured using CBCT...
March 15, 2017: Pediatric Dentistry
https://www.readbyqxmd.com/read/28389648/root-anatomy-and-canal-morphology-of-mandibular-first-premolars-in-a-chinese-population
#20
Lei Dou, Duojiao Li, Tingting Xu, Yin Tang, Deqin Yang
This study was to investigate root anatomy and root canal morphology of mandibular first premolars in a Chinese population. 178 human permanent mandibular first premolars extracted from a native Chinese population were collected, scanned using micro-computed tomography and reconstructed three-dimensionally. The number of roots and canals, canal configuration and radicular grooves were investigated. The root canal morphology was categorized according to Vertucci's criteria. The radicular grooves were scored according to the Arizona State University dental anthropology scoring system (ASUDAS), and the correlation between scores for radicular grooves and root canal morphology was analyzed...
April 7, 2017: Scientific Reports
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