Scanning electron microscopy with energy dispersive X-ray spectrophotometry analysis of reciprocating and continuous rotary nickel-titanium instruments following root canal retreatment.


:This study aimed to evaluate superficial defects and the composition of Reciproc R25 and ProTaper Retreatment file systems (Dentsply Maillefer, Ballaigues, Switzerland) used for retreatment. A total of 100 maxillary incisor teeth were randomly divided into the following two groups: Reciproc R25 (n = 25) and ProTaper Retreatment instrument (n = 75) groups. The nickel-titanium (Ni-Ti) compositions of the files before and after use were analyzed using energy dispersive X-ray spectrophotometry (EDX). Chi-square, Mann-Whitney U, and Kruskal-Wallis tests were used to analyze the data. ProTaper Retreatment instrument group showed a significantly higher number of defects than the Reciproc group (P < 0.05). No instrument fracture was detected. The presence of debris was observed in both groups before use, although the level was significantly higher in the ProTaper Retreatment group, which consisted of metals (P < 0.05). There was no significant difference between new and used instruments with regard to Ni-Ti composition (P < 0.05). EDX analysis showed that both the Reciproc and ProTaper Retreatment instruments had a Ni-Ti composition that was within the standards specified by the American Society of Testing and Materials. This study confirmed the use of both the Reciproc R25 file and ProTaper Retreatment file system for root canal filling removal in straight root canals as a safe procedure. (J Oral Sci 58, 401-406, 2016).


J Oral Sci


Journal of oral science


Kalyoncuoğlu E,Keskin C,Uzun İ,Bengü AS,Guler B




Has Abstract


2016-01-01 00:00:00












  • Effect of school-based fluoride mouth-rinsing on dental caries incidence among schoolchildren in the Kingdom of Tonga.

    abstract::Since 1998, the authors have been working to improve the oral health of children at kindergartens and primary schools in the Kingdom of Tonga (Tonga). Our primary activity has been a school-based fluoride mouth-rinsing (FMR) program. FMR is performed using 7-10 mL of a 0.2% NaF solution for 1 min once per week at each...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Takeuchi R,Kawamura K,Kawamura S,Endoh M,Tomiki S,Taguchi C,Kobayashi S

    更新日期:2012-01-01 00:00:00

  • Histopathologic evaluation of subcutaneous tissue response to three endodontic sealers in rats.

    abstract::The aim of this study was to evaluate the subcutaneous biocompatibility of three root canal sealers in rats. Thirty Wistar rats were divided into three groups according to three time periods (15, 30 and 60 days). Sterilized polyethylene tubes filled with root canal sealers (AH Plus, Epiphany & Grossman), and one empty...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Farhad AR,Hasheminia S,Razavi S,Feizi M

    更新日期:2011-03-01 00:00:00

  • Temporomandibular joint dislocation in a post-stroke patient with dysphagia caused by gastroesophageal reflux-related vomiting.

    abstract::Temporomandibular joint dislocation (TMJ) is sometimes found in post-stroke patients, and most cases occurs involuntarily. This report describes a rare case of repeated, voluntary, TMJ in a 73-year-old woman with dysphagia and dysarthria. The cause of dislocation was suspected to be voluntary excessive mouth opening a...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Kaneko T,Endo M,Uematsu A,Nakamura S,Horie N,Shimoyama T

    更新日期:2016-01-01 00:00:00

  • Primary intraosseous carcinoma arising from an odontogenic cyst: a case report and review of the Japanese cases.

    abstract::A rare case of primary intraosseous carcinoma (PIOC) arising from an odontogenic cyst in a 58-year-old man is reported. Clinical and radiological examinations revealed an odontogenic cyst of the maxilla. Histopathologically, the lesion was composed of a cyst with a parakeratotic epithelial lining and well-differentiat...

    journal_title:Journal of oral science

    pub_type: 杂志文章,评审


    authors: Saito T,Okada H,Akimoto Y,Yamamoto H

    更新日期:2002-03-01 00:00:00

  • Effects of selenium on the structure of the mandible in experimental diabetics.

    abstract::In the treatment of diabetes-induced pathologies, beneficial results have been obtained with administration of antioxidants. Selenium is an antioxidant and essential trace element in living organisms. The aim of this study was to investigate the possible effects of selenium on the structural alterations of the mandibl...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Delilbasi C,Demiralp S,Turan B

    更新日期:2002-06-01 00:00:00

  • Effect of ammonium hexafluorosilicate application for arresting caries treatment on demineralized primary tooth enamel.

    abstract::Ammonium hexafluorosilicate (AHF) has been applied to arrest caries without discoloration. The purpose of this study was to observe structural and elemental changes of demineralized and AHF applied primary tooth enamel. Enamel from the labial surface of 20 primary canines was divided into an unground side and ground s...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Hosoya Y,Tadokoro K,Otani H,Hidaka K,Inoue T,Miyazaki M,Tay FR

    更新日期:2013-01-01 00:00:00

  • Bone mineral density, bone mineral content, gingival crevicular fluid (matrix metalloproteinases, cathepsin K, osteocalcin), and salivary and serum osteocalcin levels in human mandible and alveolar bone under conditions of simulated microgravity.

    abstract::In astronauts and cosmonauts, exposure to microgravity has been associated with several physiological changes, including an osteoporosis like loss of bone mass. It has been reported that head-down tilt bed-rest studies mimic many of the observations seen in space flights. There has been no study of the effects of mand...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Rai B,Kaur J,Catalina M

    更新日期:2010-09-01 00:00:00

  • Effects of chlorhexidine digluconate and hydrogen peroxide on Porphyromonas gingivalis hemin binding and coaggregation with oral streptococci.

    abstract::Porphyromonas gingivalis, a gram-negative anaerobe, is one of the major causative agents of periodontal disease. In this study, the effects of chlorhexidine digluconate and hydrogen peroxide on the hemin binding of P. gingivalis and coaggregation of this bacterium with oral streptococci were examined. The pretreatment...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Lee SY

    更新日期:2001-03-01 00:00:00

  • Submentovertex cephalometric analysis of Class II subdivision malocclusions.

    abstract::Submentovertex cephalometric analysis was used to assess the mandibular symmetry of 20 patients with Class II subdivision malocclusion and 20 controls with Class I occlusions. Using the intercondylar line and the intercondylar axis, the relative differences were measured between mandibular landmarks in both anteropost...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Sabah ME

    更新日期:2002-12-01 00:00:00

  • Effect of experimental xylitol and fluoride-containing dentifrices on enamel erosion with or without abrasion in vitro.

    abstract::This in vitro study aimed to analyze the effect of including xylitol into a fluoridated dentifrice to provide protection against enamel erosion with or without abrasion. Bovine enamel specimens were subjected to erosion or erosion plus abrasion (7 days) and the treatment with the following dentifrices: 10% xylitol; 10...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Rochel ID,Souza JG,Silva TC,Pereira AF,Rios D,Buzalaf MA,Magalhães AC

    更新日期:2011-06-01 00:00:00

  • Effects of scanning technique on in vitro performance of CAD/CAM-fabricated fiber posts.

    abstract::This study assessed push-out strength, cement layer thickness, and interfacial nanoleakage of luted fiber posts fabricated with computer-aided design/computer-assisted manufacture (CAD/CAM) technology after use of 1 of 3 scanning techniques, namely, direct scanning of the post space (DS), scanning of a polyether impre...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Tsintsadze N,Juloski J,Carrabba M,Goracci C,Vichi A,Grandini S,Ferrari M

    更新日期:2018-01-01 00:00:00

  • Traumatic injury to permanent tooth resulting in complete root resorption: a case report.

    abstract::When a tooth is avulsed and replanted following traumatic dental injury, complications such as replacement and inflammatory resorption may occur. Ultimately, resorption may result in loss of the tooth. This case report describes a traumatic injury to a permanent tooth resulting in complete root resorption within a sho...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Niikuni N,Seki N,Sato K,Nasu D,Shirakawa T

    更新日期:2007-12-01 00:00:00

  • The effect of mesenchymal stem cells on osteoclast precursor cell differentiation.

    abstract::Transplantation of mesenchymal stem cells (MSCs) has been extensively studied in the field of regenerative medicine. Bone regeneration is achieved via the interaction of osteoblasts and osteoclasts. However, the influence of MSCs on osteoclasts is unknown. The purpose of this study was to investigate the effect of MSC...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Abe T,Sumi K,Kunimatsu R,Oki N,Tsuka Y,Nakajima K,Ando K,Tanimoto K

    更新日期:2019-03-28 00:00:00

  • Detection of mitochondrial DNA mutations in human gingival tissues.

    abstract::The accumulation of mitochondrial DNA mutation is an important contributor to the aging process. Polymerase chain reaction (PCR) amplification was carried out on total DNA from gingival tissues of human subjects with ages of 19 to 64 years, and 5.0-kb and 7.4-kb deletions were found in the mitochondrial genomes of the...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Sugano N,Kawamoto K,Numazaki H,Murai S,Ito K

    更新日期:2000-12-01 00:00:00

  • Bond strength to bovine dentin of a composite core build-up material combined with four different bonding agents.

    abstract::Clearfil DC Bond (DC) is a new single-step, dual-cure bonding agent. In this study, the shear bond strengths of a core build-up composite to dentin used with four bonding systems [DC, Unifil Core Self-Etching Bond (UC), Clearfil SE Bond (SE) and Cleafil tri-S Bond (TS)] were measured. The bonding ability after 7 days ...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Ishii T,Ohara N,Oshima A,Koizumi H,Nakazawa M,Masuno T,Matsumura H

    更新日期:2008-09-01 00:00:00

  • Toll-like receptor 4 polymorphism is associated with increased susceptibility to chronic obstructive pulmonary disease in Han Chinese patients with chronic periodontitis.

    abstract::The aim of the present study was to evaluate the association of single nucleotide polymorphisms (SNPs) in toll-like receptor 4 (TLR4) with chronic obstructive pulmonary disease (COPD) in Han Chinese patients with chronic periodontitis (CP). Six candidate SNPs of TLR4-rs10759930, rs10983755, rs11536879, rs1927907, rs11...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Yu H,Lin M,Wang X,Wang S,Wang Z

    更新日期:2016-01-01 00:00:00

  • The role of Carisolv and different auxiliary chemical substances in the removal of bovine root canal smear layer.

    abstract:UNLABELLED:To evaluate the effectiveness of Carisolv and different auxiliary chemical substances in root canal smear layer (SL) removal. SL was produced in the centre of 40 hemi-disks of bovine root dentine. The samples were divided into four irrigation groups (G): GI (control) - 0.9% NaCl; GII - 1% NaOCl + 0.9% NaCl; ...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Antonio AG,Maia LC,Primo LG,Moraes RS,Cunha CB

    更新日期:2006-09-01 00:00:00

  • Expression of connexins and the effect of retinoic acid in oral keratinocytes.

    abstract::Differential expression of members of the connexin (Cx) gap junction multigene family permits formation of gap junctions with the varied physiological properties required by different tissues. The aim of this study was to characterize connexin expression and the influence of all-trans-retinoic acid (RA) in mouse gingi...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Hatakeyama S,Mikami T,Habano W,Takeda Y

    更新日期:2011-09-01 00:00:00

  • Evaluation of salivary and serum lipid peroxidation, and glutathione in oral leukoplakia and oral squamous cell carcinoma.

    abstract::Lipid peroxidation induced by reactive oxygen species (ROS) is involved in the pathogenesis of malignancy. Overall, lipid peroxidation levels are indicated by malondialdehyde (MDA), which is the most frequently used biomarker to detect oxidative changes. Antioxidant defense systems such as glutathione (GSH) limit cell...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Metgud R,Bajaj S

    更新日期:2014-06-01 00:00:00

  • Congenital absence of the permanent canines: a clinico-statistical study.

    abstract::We report here a clinico-statistical study of congenital absence of the permanent canines (CAPC). Sixty-five cases (22 men and 43 women) of CAPC were found in the files of 35,927 outpatients, an incidence of 0.18%. Thirty-seven cases had single absence of the canine and 28 cases had multiple absences. There were 42 ca...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Fukuta Y,Totsuka M,Takeda Y,Yamamoto H

    更新日期:2004-12-01 00:00:00

  • Naso-oral fistula due to rhinolithiasis: a rare presentation.

    abstract::Naso-oral fistula, as the name suggests, is an abnormal communication between the nasal and oral cavities. It is an extremely rare clinical entity encountered in routine rhinology clinics across the world. The occurrence of this fistula due to rhinolithiasis is much rarer. We present one such case in a 40-year-old man...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Arora S,Garg LN,Julaha M,Tuli BS

    更新日期:2009-09-01 00:00:00

  • Cellular hemangioma in an adult.

    abstract::This report describes an adult case of cellular hemangioma arising in the lower lip. A 39-year-old healthy woman presented with a polypoid mass of 4 months duration. The tumor imparted little color to the overlying mucosa and was misdiagnosed as a mucous granuloma preoperatively. The lobular proliferation of plump end...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Shimoyama T,Horie N,Kato T,Kaneko T,Ide F

    更新日期:2000-09-01 00:00:00

  • Effects of polymerization method on flexural and shear bond strengths of a fiber-reinforced composite resin.

    abstract::This study investigated the effects of indirect composite polymerization on the postcuring mechanical properties of a fiber-reinforced composite. An indirect composite seated on glass fibers preimpregnated with polymerized monomer was polymerized by 1) photoirradiation using a halogen-fluorescent polymerizing unit for...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Yanagida H,Tanoue N,Minesaki Y,Kamasaki Y,Fujiwara T,Minami H

    更新日期:2017-03-31 00:00:00

  • Compliance with supportive periodontal therapy among patients with aggressive and chronic periodontitis.

    abstract::Compliance with supportive periodontal therapy (SPT) depends on many factors but is generally poor. We compared SPT compliance among patients with aggressive and chronic periodontitis. This single-center longitudinal observational study enrolled 101 patients with generalized aggressive periodontitis (GAP; n = 52) or g...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Agrawal N,Jain R,Jain M,Agarwal K,Dubey A

    更新日期:2015-09-01 00:00:00

  • Oral clefts: a retrospective study of prevalence and predisposal factors in the State of Mexico.

    abstract::The purpose of this study was to up-date the records concerning oral clefts (OCs) encountered at the Child Hospital of the Maternal Infantile Institute of the State of México, and to examine the association of predisposing factors. A retrospective study of the medical records of patients generated over a 5-year period...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: González BS,López ML,Rico MA,Garduño F

    更新日期:2008-06-01 00:00:00

  • Management of an extensive invasive root resorptive lesion with mineral trioxide aggregate: a case report.

    abstract::External invasive resorption is an uncommon but aggressive type of external resorption. This report outlines the management of an advanced case of external invasive resorption with mineral trioxide aggregate (MTA). The clinical and radiographic follow-up after 60 months revealed a functional tooth with a stable period...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Danesh F,Karamifar K,Abbott PV

    更新日期:2011-09-01 00:00:00

  • Evaluating surface roughness of a polyamide denture base material in comparison with poly (methyl methacrylate).

    abstract::Polyamide denture base materials are more flexible than the commonly used poly (methyl methacrylate) (PMMA). However polishability of polyamides has not been examined adequately. This study investigated the surface roughness (Ra) and clinical acceptability of samples of a polyamide denture base material and PMMA fabri...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Abuzar MA,Bellur S,Duong N,Kim BB,Lu P,Palfreyman N,Surendran D,Tran VT

    更新日期:2010-12-01 00:00:00

  • The use of lasers for direct pulp capping.

    abstract::Direct pulp capping helps extend the life of a diseased tooth by maintaining tooth vitality. Nowadays, lasers are more frequently used during direct pulp capping in the clinic, but their use has not been previously reviewed. This review presents the basic properties of currently available lasers, scientific evidence o...

    journal_title:Journal of oral science

    pub_type: 杂志文章,评审


    authors: Komabayashi T,Ebihara A,Aoki A

    更新日期:2015-01-01 00:00:00

  • Oral recurrent aphthous ulcers/stomatitis: prevalence in Malaysia and an epidemiological update.

    abstract::One of the objectives of this short communication was to add to the literature on the prevalence of oral recurrent aphthous stomatitis (ORAS). This research is based on a total of 11,697 randomly selected Malaysian subjects with an age range of 25-115 years and a mean age of 44.5 +/- 13.9 years who were examined for o...

    journal_title:Journal of oral science

    pub_type: 杂志文章


    authors: Zain RB

    更新日期:2000-03-01 00:00:00

  • A double-blind randomized clinical trial of subgingival minocycline for chronic periodontitis.

    abstract::The purpose of this study was to evaluate the presence of A. actinomycetemcomitans, P. gingivalis, P. intermedia, E. corrodens and F. nucleatum in 30 subjects with chronic periodontitis treated by scaling and root planing (SRP) plus minocycline (test group) during 12 months with regular trimester maintenance care. Add...

    journal_title:Journal of oral science

    pub_type: 杂志文章,随机对照试验


    authors: Cortelli JR,Aquino DR,Cortelli SC,Carvalho-Filho J,Roman-Torres CV,Costa FO

    更新日期:2008-09-01 00:00:00