Accuracy of Cone-beam Computed Tomography in Measuring Dentin Thickness and Its Potential of Predicting the Remaining Dentin Thickness after Removing Fractured Instruments.

Abstract:

INTRODUCTION:The purpose of this study was to evaluate the accuracy of cone-beam computed tomographic (CBCT) to measure dentin thickness and its potential of predicting the remaining dentin thickness after the removal of fractured instrument fragments. METHODS:Twenty-three human mandibular molars were selected, and 4-mm portions of #25/.06 taper K3 files (SybronEndo, Orange, CA) were fractured in mesial canals. The teeth were then scanned using a micro-computed tomographic (micro-CT) system and a CBCT unit. Dentin thickness was measured and compared between both micro-CT and CBCT images to study the accuracy of CBCT readings. Then, the process of removing the fragments was simulated in CBCT images using the MeVisLab package (MeVis Research, Bremen, Germany); the predicted minimal remaining dentin thickness after removal was measured in different layers using VGStudio MAX software (Volume Graphics, Heidelberg, Germany). Data were compared with the actual minimal remaining dentin thickness acquired from micro-CT images, which were scanned after removing fractured instruments using the microtrepan technique. The results were analyzed statistically using intraclass correlation coefficients (ICCs) and a forecasting regression model analysis. RESULTS:The ICC for the dentin thickness was 0.988. The forecasting regression model of CBCT imaging estimating dentin thickness was micro-CT imaging = 15.835 + 1.080*CBCT, R2 = 0.963. The ICC for the remaining dentin thickness was 0.975 (P < .001). The forecasting regression model of CBCT imaging forecasting remaining dentin thickness was micro-CT imaging = 147.999 + 0.879*adjusted CBCT, R2 = 0.906. CONCLUSIONS:The study showed that CBCT imaging could measure dentin thickness accurately. Furthermore, using CBCT images, it is reliable and feasible to forecast the remaining dentin thickness after simulated instrument removal.

journal_name

J Endod

journal_title

Journal of endodontics

authors

Xu J,He J,Yang Q,Huang D,Zhou X,Peters OA,Gao Y

doi

10.1016/j.joen.2017.03.041

subject

Has Abstract

pub_date

2017-09-01 00:00:00

pages

1522-1527

issue

9

eissn

0099-2399

issn

1878-3554

pii

S0099-2399(17)30377-1

journal_volume

43

pub_type

杂志文章
  • In vitro cytotoxicity of root canal filling materials: 1. Gutta-percha.

    abstract::Gutta-percha (GP) has been the most widely used root canal filling material because of its well-known low toxicity. The inertness of GP, however, was challenged recently. The purpose of this study was to evaluate the toxicity of marketed endodontic GP using the radiochromium release test. Fourteen commercially availab...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/s0099-2399(06)81885-6

    authors: Pascon EA,Spångberg LS

    更新日期:1990-09-01 00:00:00

  • Effects of short-term chemical disinfection of gutta-percha cones: identification of affected microbes and alterations in surface texture and physical properties.

    abstract::The aims of this study were to identify microorganisms on the surface of gutta-percha (GP) cones using a polymerase chain reaction (PCR) and to evaluate the sterilization effect of 5.25% sodium hypochlorite (NaOCl), 2% chlorhexidine (CHX), and ChloraPrep on these bacteria. Alterations of the surface texture and physic...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2007.01.019

    authors: Pang NS,Jung IY,Bae KS,Baek SH,Lee WC,Kum KY

    更新日期:2007-05-01 00:00:00

  • Comparison of apical leakage in teeth obturated with a polyamide varnish or zinc oxide and eugenol cement using lateral condensation.

    abstract::The sealing ability of copal varnish has been investigated when used as an adjunct in restorative procedures, retrofilling procedures, and dontic obturation procedures. Barrier, a polyamide-type polymer cavity varnish, has been compared with copal varnishes in restorative dentistry. This investigation compared the api...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)81138-6

    authors: Smith DW,Wong M

    更新日期:1992-01-01 00:00:00

  • Patterns of vertical root fracture: factors affecting stress distribution in the root canal.

    abstract::Previous studies have indicated that vertical root fracture tends to occur in a buccolingual direction, where dentin thickness is greatest. Factors potentially influencing the location and direction of root fracture include root canal shape, external root morphology, and dentin thickness. In this finite-element study,...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200308000-00008

    authors: Lertchirakarn V,Palamara JE,Messer HH

    更新日期:2003-08-01 00:00:00

  • Association of black-pigmented bacteria with endodontic infections.

    abstract::Black-pigmented bacteria (BPB) have been associated with endodontic infections. The purpose of this study was to evaluate further the presence of BPB with the clinical signs and symptoms associated with endodontic infections. Microbial samples were collected from the root canals of 40 intact teeth with necrotic pulps ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(99)80268-4

    authors: Baumgartner JC,Watkins BJ,Bae KS,Xia T

    更新日期:1999-06-01 00:00:00

  • A comparative study of apical leakage of Endomethasone, Top Seal, and Roeko Seal sealer cements.

    abstract::A comparison was made of the apical leakage of three sealers. Fifty single-root human teeth were randomly divided into 5 groups (n = 10; 3 experimental and 2 control). The teeth of the positive-control and experimental groups were instrumented with K-type files to size 45. The experimental groups were obturated by lat...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200206000-00001

    authors: Lucena-Martín C,Ferrer-Luque CM,González-Rodríguez MP,Robles-Gijón V,Navajas-Rodríguez de Mondelo JM

    更新日期:2002-06-01 00:00:00

  • Effect of the wicking behavior of multifilament sutures.

    abstract::The purpose of this study was to compare the wicking propensity of multifilament sutures. Dexon II, Vicryl, and black silk suture (BSS) were dipped in saline or soaked for 48 h, then suspended on a microscope slide. Fluorescein isothiocyanate-dextran (FITC-D) was placed at the suture mid points, and its movement was o...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/01.don.0000121617.67923.05

    authors: Grigg TR,Liewehr FR,Patton WR,Buxton TB,McPherson JC

    更新日期:2004-09-01 00:00:00

  • Bacterial reduction with nickel-titanium rotary instrumentation.

    abstract::The purpose of this study was to compare intracanal bacterial reduction on teeth instrumented with 0.04 tapered nickel-titanium (NiTi) rotary instrumentation to bacterial reduction when using a stainless-steel K-file step-back technique using sterile saline irrigation. Forty-eight patients with apical periodontitis we...

    journal_title:Journal of endodontics

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1016/S0099-2399(98)80170-2

    authors: Dalton BC,Orstavik D,Phillips C,Pettiette M,Trope M

    更新日期:1998-11-01 00:00:00

  • Biomimetic approach to perforation repair using dental pulp stem cells and dentin matrix protein 1.

    abstract:INTRODUCTION:Dentin regeneration could be an ideal treatment option to restore tissue function. This study was conducted to evaluate the ability of dental pulp stem cells (DPSCs) and dentin matrix protein 1 (DMP1) impregnated within a collagen scaffold to regenerate dentin. METHODS:Simulated perforations were created ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2011.05.019

    authors: Alsanea R,Ravindran S,Fayad MI,Johnson BR,Wenckus CS,Hao J,George A

    更新日期:2011-08-01 00:00:00

  • Evaluation of cracks associated with ultrasonic root-end preparation.

    abstract::The purpose of this study was to evaluate the integrity of resected root-end surfaces of extracted human teeth after using ultrasonic tips at low or high frequencies for root-end preparation. Thirty bilaterally matched pairs of single-rooted human teeth had root-end resections using a low-speed diamond saw and were ex...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(96)80091-4

    authors: Layton CA,Marshall JG,Morgan LA,Baumgartner JC

    更新日期:1996-04-01 00:00:00

  • Depth of penetration of four resin sealers into radicular dentinal tubules: a confocal microscopic study.

    abstract:BACKGROUND:The aim of this in vitro study was to evaluate the depth of penetration of 4 different endodontic resin sealers into the radicular dentinal tubules with the aid of confocal microscopy. METHODS:Eighty single-rooted teeth were instrumented and divided into 4 groups composed of 20 teeth each. The samples were ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2012.05.017

    authors: Chandra SS,Shankar P,Indira R

    更新日期:2012-10-01 00:00:00

  • Absent in melanoma 2 (AIM2) in rat dental pulp mediates the inflammatory response during pulpitis.

    abstract:INTRODUCTION:In recent years, the inflammasome has been determined to play an important role in inflammatory diseases. However, the role of the inflammasome in pulpitis remains unclear. Absent in melanoma 2 (AIM2) is a type of inflammasome that recognizes cytosolic double stranded DNA and forms a caspase-1-activating i...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2013.07.003

    authors: Wang Y,Zhai S,Wang H,Jia Q,Jiang W,Zhang X,Zhang A,Liu J,Ni L

    更新日期:2013-11-01 00:00:00

  • Accuracy and Reliability of Root Crack and Fracture Detection in Teeth Using Magnetic Resonance Imaging.

    abstract:INTRODUCTION:Magnetic resonance imaging (MRI) has the potential to aid in determining the presence and extent of cracks/fractures in teeth because of better contrast without ionizing radiation. The objectives were to develop MRI criteria for root crack/fracture identification and to establish reliability and accuracy i...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2019.03.008

    authors: Schuurmans TJ,Nixdorf DR,Idiyatullin DS,Law AS,Barsness BD,Roach SH,Gaalaas L

    更新日期:2019-06-01 00:00:00

  • Effect of MTAD on Enterococcus faecalis-contaminated root canals of extracted human teeth.

    abstract::The purpose of this investigation was to compare the antimicrobial effect of MTAD (a mixture of a tetracycline isomer, an acid, and a detergent) with that of NaOCl with and without EDTA. Eighty-five extracted human teeth were contaminated with Enterococcus faecalis for 4 weeks. After biomechanical instrumentation usin...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200309000-00008

    authors: Shabahang S,Torabinejad M

    更新日期:2003-09-01 00:00:00

  • Endodontic retreatment: an online study guide.

    abstract::The Editorial Board of the Journal of Endodontics has developed a literature-based study guide of topical areas related to endodontics. This study guide is intended to give the reader a focused review of the essential endodontic literature and does not cite all possible articles related to each topic. Although citing ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,评审

    doi:10.1016/j.joen.2007.08.012

    authors: JOE Editorial Board.

    更新日期:2008-05-01 00:00:00

  • Conventional and surgical treatment of a two-rooted maxillary central incisor.

    abstract::Conventional and surgical endodontic management were performed on a two-rooted maxillary central incisor with a periapical lesion. Anatomical complexity of the tooth lead to perforation in the distal root during conventional treatment, thus a surgical approach was taken. A 4-month postoperative radiograph shows repair...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1097/00004770-200306000-00011

    authors: González-Plata-R R,González-Plata-E W

    更新日期:2003-06-01 00:00:00

  • Cyclic Fatigue of Reciproc and Reciproc Blue Nickel-titanium Reciprocating Files at Different Environmental Temperatures.

    abstract:INTRODUCTION:The aim of the present study was to investigate the impact of ambient temperature on the life span of nickel-titanium (NiTi) files. METHODS:Cyclic fatigue testing of NiTi instruments was performed in a stainless steel artificial canal. During the experiment, 4 different temperatures (0°C, 20°C, 35°C, and ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2018.06.006

    authors: Plotino G,Grande NM,Testarelli L,Gambarini G,Castagnola R,Rossetti A,Özyürek T,Cordaro M,Fortunato L

    更新日期:2018-10-01 00:00:00

  • Adhesive dentistry and endodontics: materials, clinical strategies and procedures for restoration of access cavities: a review.

    abstract::The complexity of restorative dentistry has increased greatly in recent years, with the myriad of products used in "adhesive dentistry." So too has the "simple" matter of restoring access cavities after completion of endodontic treatment. This review discusses current methods of "bonding" to tooth structure, ceramic m...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,评审

    doi:10.1097/01.don.0000155222.49442.a1

    authors: Schwartz RS,Fransman R

    更新日期:2005-03-01 00:00:00

  • Outcome and Survival of Endodontically Treated Cracked Posterior Permanent Teeth: A Systematic Review and Meta-analysis.

    abstract:INTRODUCTION:The aim of the present systematic review and meta-analysis was to evaluate the success and survival rate of endodontically treated cracked posterior teeth and to assess the preoperative factors that affect teeth survival. METHODS:The study protocol was registered on the PROSPERO international prospective ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,meta分析

    doi:10.1016/j.joen.2020.01.006

    authors: Olivieri JG,Elmsmari F,Miró Q,Ruiz XF,Krell KV,García-Font M,Durán-Sindreu F

    更新日期:2020-04-01 00:00:00

  • Porphyromonas (Bacteroides) endodontalis: its role in endodontal infections.

    abstract::Porphyromonas endodontalis (formerly Bacteroides endodontalis) is a black-pigmented anaerobic Gram-negative rod which is associated with endodontal infections. It has been isolated from infected dental root canals and submucous abscesses of endodontal origin. The presence of P. endodontalis in infected dental root can...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/s0099-2399(06)80843-5

    authors: van Winkelhoff AJ,van Steenbergen TJ,de Graaff J

    更新日期:1992-09-01 00:00:00

  • The effect of formalin storage on the apical microleakage of obturated canals.

    abstract::Infection control guidelines recommend disinfection of extracted teeth in 10% formalin for 2 weeks before use. Although extracted teeth are routinely used for in vitro endodontic research, the potential influence of formalin has not been evaluated. The purpose of this study was to investigate the effect of formalin st...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2006.04.009

    authors: George SW,Pichardo MR,Bergeron BE,Jeansonne BG

    更新日期:2006-09-01 00:00:00

  • Effects of a Bioactive Scaffold Containing a Sustained Transforming Growth Factor-β1-releasing Nanoparticle System on the Migration and Differentiation of Stem Cells from the Apical Papilla.

    abstract:INTRODUCTION:This 2-part study hypothesized that a bioactive scaffold containing a sustained transforming growth factor (TGF)-β1-releasing nanoparticle system will promote migration and enhance differentiation of stem cells from the apical papilla (SCAP). The study aimed to develop and characterize a novel modified chi...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2016.06.017

    authors: Bellamy C,Shrestha S,Torneck C,Kishen A

    更新日期:2016-09-01 00:00:00

  • Idiopathic Bone Cavity: Clinicopathologic Features from a Case Series with Emphasis on Differential Diagnosis of Chronic Apical Periodontitis.

    abstract:INTRODUCTION:Idiopathic bone cavity (IBC) is an uncommon bone lesion that usually affects youngsters as an unilocular radiolucency with predilection for the posterior mandible. Because the lesion is frequently located in proximity to the adjacent teeth, chronic apical periodontitis is commonly included as a differentia...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2020.11.004

    authors: Roma LG,Lopes CB,Netto JNS,Miranda ÁMMA,Pires FR

    更新日期:2021-02-01 00:00:00

  • Bacterial leakage of mineral trioxide aggregate as a root-end filling material.

    abstract::Previous dye leakage studies have shown that mineral trioxide aggregate leaks significantly less than other commonly used root-end filling materials. This study determined the time needed for Staphylococcus epidermidis to penetrate a 3-mm thickness of amalgam, Super-EBA, Intermediate Restorative Material (IRM), or min...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/s0099-2399(06)80433-4

    authors: Torabinejad M,Rastegar AF,Kettering JD,Pitt Ford TR

    更新日期:1995-03-01 00:00:00

  • Inflammation triggers constitutive activity and agonist-induced negative responses at M(3) muscarinic receptor in dental pulp.

    abstract::The purpose of this study was to investigate whether the inflammation of rat dental pulp induces the muscarinic acetylcholine receptor (mAChR) constitutive receptor activity. Pulpitis was induced with bacterial lipolysaccharide in rat incisors dental pulp. Saturation assay with [(3)H]-quinuclidinyl benzilate ([(3)H] Q...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2010.11.021

    authors: Sterin-Borda L,Orman B,De Couto Pita A,Borda E

    更新日期:2011-02-01 00:00:00

  • Influence of different root canal-filling materials on the mechanical properties of root canal dentin.

    abstract::The aims of this study were to compare Resilon (Resilon Research LLC, Madison, CT) in conjunction with either a bonding (Epiphany; Pentron Clinical Technologies, Wallingford, CT) or a nonbonding endodontic sealer (Pulp Canal Sealer; Kerr Corporation, Orange, CA) to EndoRez (Ultradent Products Inc, South Jordan, UT) an...

    journal_title:Journal of endodontics

    pub_type: 杂志文章,随机对照试验

    doi:10.1016/j.joen.2007.02.018

    authors: Grande NM,Plotino G,Lavorgna L,Ioppolo P,Bedini R,Pameijer CH,Somma F

    更新日期:2007-07-01 00:00:00

  • Comparison of endotoxin levels found in primary and secondary endodontic infections.

    abstract:INTRODUCTION:This clinical study was conducted to compare the levels of endotoxins (lipopolysaccharides [LPSs]) found in primary and secondary endodontic infections with apical periodontitis by correlating LPS contents with clinical/radiographic findings. In addition, the presence of target gram-negative anaerobic bact...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/j.joen.2012.04.021

    authors: Gomes BP,Endo MS,Martinho FC

    更新日期:2012-08-01 00:00:00

  • An immunohistochemical study of the behavior of cells expressing interleukin-1 alpha and interleukin-1 beta within experimentally induced periapical lesions in rats.

    abstract::Cells expressing interleukin-1 (IL-1) were examined in rat periapical lesions using immunohistochemical methods. During the acute phase, both IL-1 alpha- and IL-1 beta-expressing cells were observed adjacent to many osteoclasts that contained large cytoplasms, and consequently the periapical lesions tended to expand. ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(98)80008-3

    authors: Matsumoto A,Anan H,Maeda K

    更新日期:1998-12-01 00:00:00

  • In vivo model for assessing the functional efficacy of endodontic filling materials and techniques.

    abstract::Endodontic fillings were challenged with bacterial ingress in mandibular premolars of 4 beagle dogs. Groups 1, 2, and 3 (n = 9), had canals filled with gutta-percha and sealer, gutta-percha alone, and sealer alone, respectively. After 2 wk, pulp chambers were inoculated with plaque. Group 4 (n = 9) and group 5 (n = 5)...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)81120-9

    authors: Friedman S,Torneck CD,Komorowski R,Ouzounian Z,Syrtash P,Kaufman A

    更新日期:1997-09-01 00:00:00

  • pH variation among materials used for intracoronal bleaching.

    abstract::Intracoronal bleaching of pulpless teeth with 30% hydrogen peroxide may result in external cervical root resorption. One of several suggested etiological factors associated with this complication is the pH of the bleaching materials. Because the available data on the pH values of bleaching materials were conflicting, ...

    journal_title:Journal of endodontics

    pub_type: 杂志文章

    doi:10.1016/S0099-2399(06)81988-6

    authors: Rotstein I,Friedman S

    更新日期:1991-08-01 00:00:00