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https://www.readbyqxmd.com/read/28088226/use-of-an-intraoperative-navigation-system-for-retrieving-a-broken-dental-instrument-in-the-mandible-a-case-report
#1
Shintaro Sukegawa, Takahiro Kanno, Akane Shibata, Kenichi Matsumoto, Yuka Sukegawa-Takahashi, Kyosuke Sakaida, Yoshihiko Furuki
BACKGROUND: A fracture of root canal instruments, with a fractured piece protruding beyond the apex, is a troublesome incident during an endodontic treatment. Locating and retrieving them represents a challenge to maxillofacial surgeons because it is difficult to access due to the proximity between the foreign body and vital structures. Although safe and accurate for surgery, radiographs and electromagnetic devices do not provide a precise three-dimensional position. In contrast, computer-aided navigation provides a correlation between preoperatively collected data and intraoperatively encountered anatomy...
January 15, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28079309/bioactive-injectable-aggregates-with-nanofibrous-microspheres-and-human-dental-pulp-stem-cells-a-translational-strategy-in-dental-endodontics
#2
I Garzón, M A Martin-Piedra, V Carriel, M Alaminos, X Liu, R D Souza
Regeneration of the pulp-dentin complex with stem cells is a potential alternative to conventional root canal treatments. Human dental pulp stem cells (hDPSCs) have been extensively studied because of their ability to proliferate and differentiate into mineralized dental and nondental tissues. In this work we combined hDPSCs with two types of injectable poly-L-lactic acid (PLLA) microspheres with a nanofibrous or smooth surface to form bioactive injectable aggregates, and examined their ability to promote pulp regeneration in the root canal in an in vivo model...
January 12, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28068186/bactericidal-efficacy-of-photodynamic-therapy-and-chitosan-in-root-canals-experimentally-infected-with-enterococcus-faecalis-an-in-vitro-study
#3
Fabio Camacho-Alonso, Encarnación Julián-Belmonte, Fernando Chiva-García, Yolanda Martínez-Beneyto
OBJECTIVE: To evaluate the antibacterial efficacy of photodynamic therapy (PDT) and chitosan against Enterococcus faecalis and assess the possible enhancive effect of chitosan on the photosensitizer methylene blue in experimentally infected root canals of extracted human teeth in vitro. BACKGROUND DATA: E. faecalis is frequently found in persistent endodontic infections. In this context, the antimicrobial PDT or newer antibacterial alternatives such as chitosan could become modern alternatives to existing antibacterial treatment approaches...
January 9, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/28052215/volumetric-evaluation-of-different-obturation-techniques-in-primary-teeth-using-spiral-computed-tomography
#4
N B Nagaveni, Sneha Yadav, P Poornima, Vv Subba Reddy, N M Roshan
BACKGROUND: Various obturation techniques have been evaluated for better filling of the root canals in primary teeth using different methods. Spiral Computed Tomography (SCT) is a new revolution in the pediatric endodontics for assessment of quality of the obturation from 3 dimensions. OBJECTIVES: To evaluate the efficiency of 5 different obturation methods in delivering the filling material into the canals of primary teeth using Spiral Computed Tomography scan...
2017: Journal of Clinical Pediatric Dentistry
https://www.readbyqxmd.com/read/28050991/laser-based-disinfection-of-the-root-canal-system-an-update
#5
Zahed Mohammadi, Hamid Jafarzadeh, Sousan Shalavi, Rasoul Sahebalam, Jun-Ichiro Kinoshita
Microorganisms have been considered to have played a critical role in the initiation and development of pulpo-periapical diseases. Some evidences have shown that mechanical instrumentation may leave considerable portions of canal surfaces undebrided. Therefore, some supplemental methods, such as the use of chemical solutions and/or lasers, have been introduced to further disinfect the complicated canal anatomy and destroy as many microorganisms as possible. The purpose of this review was to address a brief review of characteristics of lasers and their effects to disinfect the root canal in endodontics...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28049372/operator-related-aspects-in-endodontic-malpractice-claims-in-finland
#6
Miira M Vehkalahti, Outi Swanljung
OBJECTIVE: We analyzed operator-related differences in endodontic malpractice claims in Finland. MATERIALS AND METHODS: Data comprised the endodontic malpractice claims handled at the Patient Insurance Centre (PIC) in 2002-2006 and 2011-2013. Two dental advisors at the PIC scrutinized the original documents of the cases (n = 1271). The case-related information included patient's age and gender, type of tooth, presence of radiographs, and methods of instrumentation and apex location...
January 4, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/28042276/endodontic-management-of-dens-invaginatus-type-iiib-case-series
#7
Jorge N R Martins, Rui Pereira da Costa, Craig Anderson, Sérgio André Quaresma, Luís S M Corte-Real, Adam D Monroe
Dens invaginatus may be seen as a developmental malformation. It is characterized by an invagination of the enamel and dentin, creating a lumen inside the affected tooth, which may extend as deep as the apical foramen. Oehlers Type IIIb is considered the most challenging clinical conditions. The purpose of this study is to discuss the nonsurgical endodontic management of vital and necrotic dens invaginatus Type IIIb cases. Due to the complex anatomical consideration of dens invaginatus Type IIIb, endodontic treatment is extremely technique sensitive...
October 2016: European Journal of Dentistry
https://www.readbyqxmd.com/read/28041682/delayed-root-development-by-displaced-mineral-trioxide-aggregate-after-regenerative-endodontics-a-case-report
#8
Aovana Timmerman, Peter Parashos
INTRODUCTION: This case report presents the treatment of a 16-year-old boy with a maxillary lateral incisor (tooth #10) presenting with Oehlers type II dens invaginatus and diagnosed with previously initiated therapy and asymptomatic apical periodontitis. METHODS: A regenerative endodontic procedure (REP) was performed for the tooth but complicated by apically displaced mineral trioxide aggregate (MTA). Clinical and radiographic examination was undertaken yearly, and a cone-beam computed tomography scan was taken to investigate further the formation of hard tissues within the root canal...
December 29, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/28040502/a-comparison-between-effect-of-photodynamic-therapy-by-led-and-calcium-hydroxide-therapy-for-root-canal-disinfection-against-enterococcus-faecalis-a-randomized-controlled-trial
#9
Mohammad Asnaashari, Hengameh Ashraf, Afsaneh Rahmati, Neda Amini
BACKGROUND: Insufficient root canal disinfection is one of the main reasons for persistent periapical pathology. Photodynamic therapy (PDT) has been proven effective in disinfecting infected root canals. The aim of this study was to evaluate the antimicrobial effect of photo activated disinfection (PAD) when using toluidine blue as photosensitizer and a LED lamp after the conventional treatment, and comparing it with calcium hydroxide therapy in vivo. METHODS: This clinical trial includes 20 patients with molars requiring endodontic retreatment...
December 28, 2016: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/28032048/radiographic-technical-quality-of-root-canal-treatment-performed-by-undergraduate-dental-students-at-the-academy-dental-teaching-hospital-umst-sudan
#10
Elhadi M Awooda, Reem I Siddig, Ruaa S Alturki, Nada M Sanhouri
AIM: To radiographically evaluate the technical quality of root canal treatment performed by undergraduate dental students and compare the findings with other institution's work. MATERIALS AND METHODS: A retrospective, cross-sectional study was conducted at the Academy Dental Teaching Hospital involving postoperative periapical radiographs of patients who were endodontically treated by batch #14 undergraduate dental students of final year (2013-2014) from UMST, Sudan...
November 2016: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28028421/the-use-of-different-irrigation-techniques-to-decrease-bacterial-loads-in-healthy-and-diabetic-patients-with-asymptomatic-apical-periodontitis
#11
Mai Ghoneim, Shehab ElDin Saber, Tarek El-Badry, Maram Obeid, Nehal Hassib
BACKGROUND: Diabetes mellitus is a multisystem disease which weakens the human's immunity. Subsequently, it worsens the sequelae of apical periodontitis by raising a fierce bacterial trait due to the impaired host response. AIM: This study aimed to estimate bacterial reduction after using different irrigation techniques in systemically healthy and diabetic patients with asymptomatic apical periodontitis. MATERIAL AND METHODS: Enterococcus faecalis, Peptostreptococcus micros, and Fusobacterium necleatum bacteria were chosen, as they are the most common and prevailing strains found in periodontitis...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28025441/effects-of-auxiliary-device-use-on-smear-layer-removal
#12
Marina C Prado, Fernanda Leal, Heloisa Gusman, Renata A Simão, Maíra Prado
This study evaluated the effects of different auxiliary irrigation devices on smear layer removal with a chelating solution (QMix). Fifty single-rooted permanent human teeth were shaped with a sequence of nickel-titanium instruments. A 2% chlorhexidine gel was used as a chemical auxiliary substance during preparation. Samples were assigned to five groups (n = 10 each) according to final irrigation protocol, namely, distilled water (control group), QMix 1 min, QMix + passive ultrasonic irrigation (PUI), QMix + plastic endodontic finishing file (EC), and QMix 3 min...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28002526/micro-ct-and-optical-microscopy-imagistic-investigations-of-root-canal-morphology
#13
Emanuela Lidia Crăciunescu, Marius Boariu, Ciprian IoniŢă, Daniela Maria Pop, Cosmin Sinescu, Mihai Romînu, Meda Lavinia NegruŢiu
Protecting the root's internal morphology is the first key toward the success of the endodontic treatment. Due to the vast diversity of endodontic space, it is difficult to visualize and to establish the shape and limits of the root canal, especially the morphology of apical area and lateral root canals. Optical microscopy is a classical imagistic investigation method, widely used along classical methods like radiographs that also offer limited information about root morphology and extension of decay. Micro-computed tomography (micro-CT), a modern imagistic investigation method can provide detailed three-dimensional reconstructions of root canal...
2016: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28001242/effect-of-the-time-point-of-acid-etching-on-the-persistence-of-sealer-residues-after-using-different-dental-cleaning-protocols
#14
Keren Cristina Fagundes Jordão-Basso, Milton Carlos Kuga, Matheus Coêlho Bandéca, Marco Antonio Hungaro Duarte, Flávia Angélica Guiotti
Endodontic sealer residues remaining within the pulp chamber dentin after root canal obturation and cleaning with various solvents may compromise the appearance and the durability of dental restorations. Acid etching is routinely performed prior to application of dentine adhesive systems, but is effect on residual sealer material and the optimal time-point for performing etching, are unknown. Here, we evaluated the effect of acid etching on the dentin surface when performed either immediately or 7 days after removal of the endodontic sealer with two solvents, i...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28000644/comparative-analysis-of-cleaning-ability-of-three-nickel-titanium-rotary-systems-protaper-universal-k3-and-mtwo-an-in-vitro-scanning-electron-microscopic-study
#15
Ambar W Raut, Vijay Mantri, Aparna Palekar, Rupal Gadodia, Shubham Kala, Radha A Raut
BACKGROUND: Endodontic instruments including the nickel-titanium (NiTi) instruments produce debris and smear layer during instrumentation. The study was carried out to evaluate and compare the cleaning effectiveness of root canal preparation using three different rotary NiTi instrumentation systems - ProTaper Universal, K3 and Mtwo by means of scanning electron microscopy (SEM). METHODS: Thirty-six freshly extracted permanent mandibular molars were randomly divided into four groups: ProTaper Universal, K3, Mtwo system and control group...
October 2016: Nigerian Postgraduate Medical Journal
https://www.readbyqxmd.com/read/27998731/bactericidal-effect-of-hydroxyl-radicals-generated-by-the-sonolysis-and-photolysis-of-hydrogen-peroxide-for-endodontic-applications
#16
Haruna Ibi, Makoto Hayashi, Fumihiko Yoshino, Muneaki Tamura, Ayaka Yoshida, Yoshimi Kobayashi, Kohei Shimizu, Masaichi-Chang-Il Lee, Kenichi Imai, Bunnai Ogiso
The aim of endodontic root canal treatment is the elimination of bacteria and their products from an infected tooth root canal. To effectively disinfect a root canal, an ultrasonic irrigation system, in which hydroxyl radicals (HO(·)) generated artificially by sonolysis of H2O2, was developed previously for endodontic applications and was demonstrated to have bactericidal efficacy against Enterococcus faecalis. To improve this system, we examined the in vitro bactericidal effects of HO(·) generated from H2O2, activated by simultaneous irradiation with ultrasound for sonolysis and dental LED light for photolysis with a peak wavelength of 405 nm...
December 18, 2016: Microbial Pathogenesis
https://www.readbyqxmd.com/read/27994427/endodontic-management-of-maxillary-first-molar-with-atypical-canal-morphology-report-of-three-cases
#17
Osama Adeel Khan Sherwani, Bhumika Kapoor, Rajat Sharma, Surendra Kumar Mishra
Maxillary first molar with three roots and 3-4 canals is a common occurrence. However, extreme variations in their canal morphology have been reported ranging from one single canal and one root to as many as eight root canals. This article presents three cases of successful endodontic management of maxillary first molars with atypical canal morphologies, thus highlighting the fact that variations do occur and an endodontist should always be aware of aberrancies in root canal system apart from the knowledge of normal root canal anatomy...
October 2016: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/27989583/collaborative-management-of-combined-periodontal-endodontic-lesions-with-a-palatogingival-groove-a-case-series
#18
Young-Dan Cho, Jung-Eun Lee, Yoonjin Chung, Woo-Cheol Lee, Yang-Jo Seol, Yong-Moo Lee, In-Chul Rhyu, Young Ku
INTRODUCTION: This article reports 3 representative cases of interdisciplinary management of a palatogingival groove in maxillary lateral incisors. The development, pathology, and effectiveness of management approaches in cases involving a combined periodontal-endodontic lesion with a palatogingival groove are discussed. METHODS: We describe 3 patients with a noncontributory medical history presenting with a chief complaint related to a maxillary incisor and diagnosed with a combined periodontal-endodontic lesion with a palatogingival groove at Seoul National University Dental Hospital, Seoul, Korea...
December 15, 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27987307/prevalence-and-nature-of-fungi-in-root-canal-infections-a-systematic-review-and-meta-analysis
#19
REVIEW
I F Persoon, W Crielaard, A R Özok
The role of bacteria in causing apical periodontitis has been widely established, while the role of other microorganisms is studied less thoroughly. This systematic review and meta-analysis reviewed the literature for the prevalence and diversity of fungi in root canal infections. An extensive literature search was done in the Cochrane databases, EMBASE, MEDLINE, LILACS, SciELO and Web of Science. Additional studies were identified from six endodontic journals, four main endodontic textbooks and references of relevant papers...
December 17, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27986101/endodontic-outcomes-in-mandibular-second-premolars-with-complex-apical-branching
#20
Ekim Onur Orhan, Ömür Dereci, Özgür Irmak
INTRODUCTION: Mandibular premolars that have rare and complex anatomies may have the highest failure rate in nonsurgical endodontic treatment. Awareness of rare and complex anatomies of mandibular second premolars would aid in better outcomes of the treatment. This study aimed to evaluate the success of nonsurgical root canal treatment of mandibular second premolar teeth with complex apical branching. METHODS: Twenty-six mandibular second premolar teeth with complex apical branching treated with multiple-visit nonsurgical root canal treatment or nonsurgical retreatment were retrospectively evaluated...
January 2017: Journal of Endodontics
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