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https://www.readbyqxmd.com/read/28214537/biomechanical-behavior-of-endodontically-treated-premolars-using-different-preparation-designs-and-cad-cam-materials
#1
Diogo Pedrollo Lise, Annelies Van Ende, Jan De Munck, Thaís Yumi Umeda Suzuki, Luiz Clovis Cardoso Vieira, Bart Van Meerbeek
OBJECTIVES: To evaluate the effect of restoration design ('2.5-mm deep endocrown', '5-mm deep endocrown' or '5-mm deep post&crown') and CAD/CAM material type (composite or lithium disilicate glass-ceramic) on the load-to-failure of endodontically treated premolars in absence of any ferrule. METHODS: The crowns of 48 single-rooted premolars were cut and the roots were endodontically treated. Teeth were randomly divided into six groups (n=8); teeth in each group were restored using one of the two tested materials with standardized CAD/CAM fabricated endocrowns (with either 2...
February 15, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28210445/evaluation-of-conventional-protaper-hand-and-protaper-rotary-instrumentation-system-for-apical-extrusion-of-debris-irrigants-and-bacteria-an-in-vitro-randomized-trial
#2
Pinky Kalra, Arathi Rao, Ethel Suman, Ramya Shenoy, Baranya-Shrikrishna Suprabha
BACKGROUND: Endodontic instrumentation carries the risk of over extrusion of debris and bacteria. The technique used and the type of instrumentation influences this risk. AIM: The purpose of this study was to evaluate and compare the K-file, ProTaper hand and ProTaper rotary instrumentation systems for the amount of apically extruded debris, irrigant solution and intracanal bacteria. DESIGN: Experimental single blinded randomized type of in vitro study with sample of 30 single rooted teeth...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28195331/comparing-self-reported-and-clinically-diagnosed-unmet-dental-treatment-needs-using-a-nationally-representative-survey
#3
J Farmer, C Ramraj, A Azarpazhooh, L Dempster, V Ravaghi, C Quiñonez
OBJECTIVES: To describe the validity and diagnostic accuracy of self-reported data compared with clinically assessed data for the ascertainment of clinical dental treatment needs in the Canadian population. METHODS: A secondary analysis of data from the Canadian Health Measures Survey (2007-2009) was undertaken. Clinical treatment needs were classified into preventive and diagnostic, restorative, endodontic, periodontic, surgical, and orthodontic categories. Sensitivity, specificity, positive and negative predictive values (NPVs), kappa statistics and likelihood ratios (LR) were calculated to compare self-reported and clinically determined needs...
February 13, 2017: Journal of Public Health Dentistry
https://www.readbyqxmd.com/read/28141647/surgical-approach-to-foreign-material-within-the-mandibular-canal-due-to-iatrogenic-factors
#4
Bo Li, Lunchang Wang, Zhihe Zhao, Hongbo Qian, Han Cui, Longjiang Li
This clinical report describes a relatively infrequent patient with inferior alveolar nerve damage caused by foreign material within the mandibular canal, which is one of the most severe complications of endodontic therapy. Although the circumstance is uncommon, it can have extremely unfavorable consequences for patients, such as anesthesia and paresthesia. In the present case, a patient suffered pain and severe paresthesia in the corresponding area after routine endodontic therapy. Several treatments were conducted to relieve the patient's symptoms, ranging from medication to tooth extraction, but all were of no avail...
January 30, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28132712/the-triple-functions-of-d2-silencing-in-treatment-of-periapical-disease
#5
Jie Pan, Jue Wang, Liang Hao, Guochun Zhu, Diep N Nguyen, Qian Li, Yuehua Liu, Zhihe Zhao, Yi-Ping Li, Wei Chen
INTRODUCTION: Dental caries is the most widespread chronic infectious disease. Inflammation in pulp tissues caused by dental caries will lead to periapical granulomas, bone erosion, loss of the tooth, and severe pain. Despite numerous efforts in recent studies to develop effective treatments for dental caries, the need for a potent therapy is still urgent. METHODS: In this study, we applied a gene-based therapy approach by administering recombinant adeno-associated virus (AAV)-mediated Atp6v0d2 (d2) RNA interference knockdown of d2 gene expression to prevent periapical bone loss and suppress periapical inflammation simultaneously...
February 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28125136/why-not-to-treat-the-tooth-canal-to-solve-external-root-resorptions-here-are-the-principles
#6
Alberto Consolaro, Graziella Bittencourt
This paper aims at exposing the foundations or reasons why, in cases of external tooth resorption, including those of orthodontic origin, one should not perform a root canal to treat it. That should be done only to teeth with contamination or pulp necrosis, to remove the periapical inflammation induced by microbial products. When facing cases of external tooth resorption, one's conduct must always respect the following sequence of steps: first of all, identifying the cause accurately; then, planning the therapeutic approach and, finally, adopting the conducts in a very well-founded way...
November 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/28116440/-application-of-pbl-combined-with-sp-method-in-during-course-practice-of-endodontics-for-undergraduate-dental-students
#7
Li-Na Shao, Li-Hong Qiu, Fu-Liang Zhan, Ming Xue
PURPOSE: To apply problem-based learning (PBL) combined with standardized patients(SP) in during-course practice of endodontics for undergraduate dental students, in order to improve the teaching quality. METHODS: One hundred and four undergraduate dental students of China Medical University School of Stomatology were randomly divided into 2 groups, 52 students in each group. One group were taught with PBL combined with SP while the other group with lecture-based learning (LBL) alone...
October 2016: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/28113131/effect-of-root-morphology-on-the-susceptibility-of-endodontically-treated-teeth-to-vertical-root-fracture-an-ex-vivo-model
#8
Raphael Pilo, Zvi Metzger, Tamar Brosh
Vertical root fracture (VRF) of endodontically treated teeth is relatively common, and the involved teeth have a poor prognosis. Previous destructive methodologies applied force to the root in an uneven manner; thus, the associated experiments could not truly assess the mechanical behavior of VRF. This problem was resolved in the current study via the novel application of a bursting pressure methodology to endodontically treated maxillary central incisors and premolars. Hydrostatic pressure was applied inside the root canal through a cannula bonded to the coronal access cavity, and the apical foramen was sealed...
January 12, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28092475/temperature-development-on-the-external-root-surface-during-laser-assisted-endodontic-treatment-applying-a-microchopped-mode-of-a-980%C3%A2-nm-diode-laser
#9
Franziska Beer, Eleftherios Terry R Farmakis, Josip Kopic, Christoph Kurzmann, Andreas Moritz
OBJECTIVE: The aim of this article was to investigate the temperature increase of the external root surface during laser-assisted endodontic treatment using a diode laser (980 nm) in a microchopped mode. METHODS: Ten freshly extracted, human maxillary incisors with mature apices were collected, prepared to size F4 at working length (ProTaper; Dentsply Maillefer, Ballaigues, Switzerland), mounted to a holder, and irradiated (using spiral movements in coronal direction) with a diode laser (GENTLEray 980 Classic Plus; KaVo, Biberach, Germany) with a 200 μm fiber in four different treatment groups: Group 1 (control group) was irradiated in six cycles of 5-sec irradiation/20-sec pause with 2...
January 12, 2017: Photomedicine and Laser Surgery
https://www.readbyqxmd.com/read/27990188/application-of-laser-irradiation-for-restorative-treatments
#10
Amin Davoudi, Maryam Sanei, Hamid Badrian
Nowadays, lasers are widely used in many fields of medicine. Also, they can be applied at many branches of dental practice such as diagnosis, preventive procedures, restorative treatments, and endodontic therapies. Procedures like caries removal, re-mineralization, and vital pulp therapy are the most noticeable effects of laser irradiation which has gained much attention among clinicians. With controlled and appropriate wavelength, they can help stimulating dentinogenesis, controlling pulpal hemorrhage, sterilization, healing of collagenic proteins, formation of a fibrous matrix, and inducing hard tissue barrier...
2016: Open Dentistry Journal
https://www.readbyqxmd.com/read/27982233/fracture-strength-of-weakened-anterior-teeth-associated-to-different-reconstructive-techniques
#11
Mariana Carolina de Lara Ferro, Vivian Colucci, Artur Gaiotto Marques, Ricardo Faria Ribeiro, Yara T C Silva-Sousa, Erica Alves Gomes
This study evaluated the fracture strength of endodontically treated teeth submitted to reconstructive techniques through dynamic and static tests. Forty human anterior teeth were divided into 4 groups (n=10): GNW (non-weakened) - root restored with glass fiber post (GFP), GW - weakened root restored with GFP, GDA - weakened root restored with direct anatomic GFP, and GIA - weakened root restored with indirect anatomic GFP. The teeth were endodontically treated considering that experimental groups (GW, GDA and GIA) simulated weakened roots for restoration with GFP using different techniques...
September 2016: Brazilian Dental Journal
https://www.readbyqxmd.com/read/27977857/influence-of-cone-beam-computed-tomography-filters-on-diagnosis-of-simulated-endodontic-complications
#12
F S Verner, P S D'Addazio, C N Campos, K L Devito, S M Almeida, R B Junqueira
AIM: To evaluate the influence of cone-beam computed tomography (CBCT) filters on diagnosis of simulated endodontic complications. METHODOLOGY: Sixteen human teeth, in three mandibles, were submitted to the following simulated endodontic complications: (G1) fractured file, (G2) perforations in the canal walls, (G3) deviated cast post, and (G4) external root resorption. The mandibles were submitted to CBCT examination (I-Cat(®) Next Generation). Five oral radiologists evaluated the images independently with and without XoranCat(®) software filters...
December 15, 2016: International Endodontic Journal
https://www.readbyqxmd.com/read/27965485/effect-of-intracanal-cryotherapy-and-negative-irrigation-technique-on-postendodontic-pain
#13
Talal Al-Nahlawi, Talaat Abo Hatab, Mahmoud Abd Alrazak, Ahmad Al-Abdullah
AIM: To evaluate the effect of intracanal cryotherapy with negative pressure irrigation (EndoVac) on postendodontic pain after vital single-visit root canal treatment (RCT). MATERIALS AND METHODS: A total of 75 single-rooted teeth with single root canal were treated endodontically. After root canal preparation with Protaper Universal rotary system and irrigation, teeth were divided randomly into three groups (n = 25) according to additional irrigation protocol as follows: Group I: No additional irrigation was applied (control); group II: A 20 mL of room temperature saline was irrigated during 5 minutes using EndoVac, and group III: A 20 mL of 2 to 4°C cold saline was irrigated during 5 minutes using EndoVac...
December 1, 2016: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/27871480/release-of-growth-factors-into-root-canal-by-irrigations-in-regenerative-endodontics
#14
Qian Zeng, Sean Nguyen, Hongming Zhang, Hari Priya Chebrolu, Dalia Alzebdeh, Mustafa A Badi, Jong Ryul Kim, Junqi Ling, Maobin Yang
INTRODUCTION: The aim of this study was to investigate the release of growth factors into root canal space after the irrigation procedure of regenerative endodontic procedure. METHODS: Sixty standardized root segments were prepared from extracted single-root teeth. Nail varnish was applied to all surfaces except the root canal surface. Root segments were irrigated with 1.5% NaOCl + 17% EDTA, 2.5% NaOCl + 17% EDTA, 17% EDTA, or deionized water. The profile of growth factors that were released after irrigation was studied by growth factor array...
December 2016: Journal of Endodontics
https://www.readbyqxmd.com/read/27862171/prognostic-factors-of-single-visit-endodontic-and-restorative-treatment-under-general-anaesthesia-for-special-needs-patients
#15
J Chang, H-Y Kim
The aim of this study was to evaluate the longevity of teeth with single-visit endodontic and restorative treatment under general anaesthesia (GA) for special needs patients and to investigate factors associated with survival and success. Data were collected from 381 teeth in 203 patients [mean (s.d.) age = 27·0 (14·1)]. All endodontic and restorative procedures were performed during a single GA session except for cementation of crowns in the cases requiring crown restoration (38%). A total of 267 teeth (70·6%) were followed-up for 6-81 months [mean (s...
November 10, 2016: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/27847747/healing-outcomes-of-root-canal-treatment-for-c-shaped-mandibular-second-molars-a-retrospective-analysis
#16
Hye-Ra Ahn, Young-Mi Moon, Sung-Ok Hong, Min-Seock Seo
OBJECTIVES: This study aimed to evaluate the healing rate of non-surgical endodontic treatment between C-shaped and non-C-shaped mandibular second molars. MATERIALS AND METHODS: Clinical records and radiological images of patients who had undergone endodontic treatment on mandibular second molars between 2007 and 2014 were screened. The periapical index scoring system was applied to compare healing outcomes. Information about preoperative and postoperative factors as well as the demographic data of the patients was acquired and evaluated using chi-square and multinomial logistic regression tests...
November 2016: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/27834412/effect-of-sonic-application-of-universal-adhesive-systems-on-bond-strength-of-fiber-posts-to-root-canal
#17
Driellen C Zarpellon, Anna L Szesz, Alessandro D Loguercio, Cesar A G Arrais
PURPOSE: This study evaluated the push-out bond strength (BS) of fiber posts in root canals and the nanoleakage (NL) pattern at the bonding interface when universal adhesives were applied in etch-and-rinse mode to root dentin using an oscillating sonic device. MATERIALS AND METHODS: Fifty-four roots of human premolars were endodontically prepared and divided into 6 experimental groups according to the main factors: adhesive system/resin cement (Ambar Universal/AllCem, Scotchbond Universal/RelyX ARC, Prime&Bond Elect/Enforce) and application mode (vigorous manual or sonic)...
November 10, 2016: Journal of Adhesive Dentistry
https://www.readbyqxmd.com/read/27790580/comparison-of-stress-distribution-in-a-maxillary-central-incisor-restored-with-two-prefabricated-post-systems-with-and-without-ferrule-using-finite-element-method
#18
Aarti Rajambigai, Arun Kumar, Sabarinathan, Ramesh Raja
INTRODUCTION: When restoring an endodontically treated tooth with deficient coronal tooth structure, posts can be used to strengthen the tooth. Recently prefabricated posts are widely used as they exclude the need for complex laboratory procedures making the procedure time saving. But the post-placement can produce stresses that cause root fracture. Different techniques can be used to study the stress distribution due to different posts, but most of them are two-dimensional and difficult to reproduce...
September 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27786566/detection-of-vertical-root-fractures-in-intact-and-endodontically-treated-premolar-teeth-by-designing-a-probabilistic-neural-network-an-ex-vivo-study
#19
Masume Johari, Farzad Esmaeili, Alireza Andalib, Shabnam Garjani, Hamidreza Saberkari
OBJECTIVES: Detection of vertical root fractures (VRFs) in their initial stages is a crucial issue, which prevents the propagation of injury to the adjacent supporting structures. Designing a suitable neural network-based model could be a useful method to diagnose the VRFs. The aim of this study was to design a probabilistic neural network (PNN) to diagnose the VRFs in intact and endodontically treated teeth of periapical and CBCT radiographs. Also, we have compared the efficacy of these two imaging techniques in the detection of VRFs...
February 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/27780003/tear-production-rate-in-a-mouse-model-of-dry-eye-according-to-the-phenol-red-thread-and-endodontic-absorbent-paper-point-tear-tests
#20
Servet Kilic, Kadri Kulualp
This study compared the endodontic absorbent paper point test (EAPTT) and the phenol red thread test (PRTT) for the assessment of tear production rate in a mouse model of dry eye. Fourteen BALB/c breed female mice were allocated into experimental and control groups of equal number. For 6 wk, the experimental group was kept in dry-eye cabinets, whereas the control group was kept in normal cages under ambient conditions. In both groups, the tear production rate was measured by using EAPTT and PRTT before the study, at study baseline, and at weeks 2, 4, and 6...
2016: Comparative Medicine
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