6,863 results match your criteria Dental Fractured Tooth


Analysis of clinical associated factors of vertical root fracture cases found in endodontic surgery.

J Dent Sci 2020 Jun 23;15(2):200-206. Epub 2019 Oct 23.

Division of Endodontics, Department of Dentistry, Taipei Medical University Hospital, Taipei, Taiwan.

Background/purpose: Early diagnosis of vertical root fracture (VRF) has been a great challenge. Since there is no single specific etiology identified, prevention of VRFs in endodontically treated teeth is quite difficult. The study aimed to evaluate the clinical associated factors of VRFs. Read More

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http://dx.doi.org/10.1016/j.jds.2019.09.003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7305451PMC

Fracture Resistance of Endodontically Treated Teeth Restored with Fiber Posts Luted with Composite Core Materials.

J Contemp Dent Pract 2020 Apr 1;21(4):383-389. Epub 2020 Apr 1.

Prosthetic Dental Sciences Department, College of Dentistry, King Saud University, Riyadh, Kingdom of Saudi Arabia.

Aim: This study aimed to investigate the influence of using dual-cure composite core materials for fiber post luting on the fracture resistance of endodontically treated maxillary central incisors.

Materials And Methods: Fifty sound and recently extracted maxillary central incisors were endodontically treated and distributed into five groups. In the control group, access cavities were restored with the composite resin. Read More

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Diagnosis of root fractures using cone-beam computed tomography: difference of vertical and horizontal root fracture.

Oral Radiol 2020 Jun 10. Epub 2020 Jun 10.

Comprehensive Dental Care, The Nippon Dental University Niigata Hospital, Niigata, Japan.

Objectives: The aim of this study was to investigate the occurrence of vertical and horizontal root fractures using cone-beam computed tomography (CBCT).

Methods: We reviewed the CBCT images of 51 patients who were examined by CBCT for the diagnosis of root fracture. The occurrences of vertical and horizontal root fractures were investigated concerning the pulpal vitality and the kind of tooth, and analyzed by cross-tabulation. Read More

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http://dx.doi.org/10.1007/s11282-020-00453-yDOI Listing

The importance of bioceramics and computed tomography in the late clinical management of a horizontal root fracture: A case report.

J Clin Exp Dent 2020 May 1;12(5):e514-e518. Epub 2020 May 1.

DDs. Department of Dentistry, Pontificial Catholic University of Minas Gerais, Brazil.

Root fractures resulting from dental trauma involve dentin, cementum and pulp. The present study aimed to demonstrate the importance of cone-beam computed tomography (CBTC) and bioceramics in the correct planning and intervention of a horizontal root fracture case in tooth 11 with late treatment in an 18-year-old patient. Clinical and radiographic examinations revealed tooth displacement, pain on vertical percussion and images suggestive of a horizontal root fracture. Read More

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http://dx.doi.org/10.4317/jced.56585DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7263778PMC

The Strange Case of a Broken Periodontal Instrument Tip.

Dent J (Basel) 2020 Jun 3;8(2). Epub 2020 Jun 3.

Clinic of Conservative and Preventive Dentistry, Center of Dental Medicine, University of Zurich, CH-8032 Zurich, Switzerland.

This case report describes a rare case of a broken periodontal probe tip and its removal. A male patient presented himself in June 2019 due to a painful tooth in the upper left quadrant. The patient elected treatment in the dental school's student course. Read More

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http://dx.doi.org/10.3390/dj8020055DOI Listing

Effect of Casein Phosphopeptide-Amorphous Calcium Phosphate on Fracture Resistance of Reattached Tooth Fragments Using Conventional and Self-Adhesive Bioactive Flowable Composite.

Eur J Dent 2020 Mar 5;14(2):288-293. Epub 2020 Jun 5.

Department of Pediatric Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.

Objectives:  The present study aimed to investigate the effect of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP) complex and the type of flowable composite (conventional or self-adhesive bioactive) on the fracture resistance of fractured incisors restored through reattachment technique.

Materials And Methods:  In this experimental study, 60 extracted bovine central mandibular incisors were randomly divided into six groups ( = 10) according to the reattachment technique. Their incisal edges were cut off to represent an enamel-dentin fracture. Read More

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http://dx.doi.org/10.1055/s-0040-1710141DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7274832PMC

Fracture Resistance of Remaining Buccal Cusps in Maxillary Premolar Ceramic Onlay Restorations.

Oper Dent 2019 May;45(4)

Kornchanok Wayakanon, DDS, MSD, PhD, Restorative Dentistry, Naresuan University, Phitsanulok, Thailand.

Preparation designs for bondable partial coverage restorations are varied. As little as 1 mm of thickness of a remaining buccal cusp can be kept when restoring maxillary premolars with bondable partial coverage restorations. Read More

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http://dx.doi.org/10.2341/19-251-LDOI Listing

Dental disorders in sows from Swedish commercial herds.

Acta Vet Scand 2020 Jun 4;62(1):27. Epub 2020 Jun 4.

Department of Clinical Sciences, Swedish University of Agricultural Sciences, PO Box 7054, 750 07, Uppsala, Sweden.

Knowledge on dental disorders in commercial sows is limited although such conditions may have important animal welfare implications. In a pilot study, the dental and periodontal health of 58 sows (Landrace*Yorkshire-crosses) from 8 Swedish commercial pig herds, slaughtered at one abattoir, were investigated. The oral cavity was inspected and abnormalities were recorded on a dental chart modified for pigs. Read More

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http://dx.doi.org/10.1186/s13028-020-00521-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7273662PMC

Does anthropomorphic model design in studies affect diagnostic accuracy for dental root fracture using CBCT?

Dentomaxillofac Radiol 2020 Jun 9:20200093. Epub 2020 Jun 9.

Division of Dentistry, School of Medical Science, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester M13 9PL, UK.

Objectives: The evidence for diagnostic accuracy using cone beam computed tomography (CBCT) for dental applications depends heavily on research, but there is little knowledge of whether the model used affects the diagnostic accuracy results. The objective of this study was to determine the impact of different designs of anthropomorphic models on diagnostic accuracy for the specific task of dental root fracture detection.

Methods: Horizontal or oblique root fracture was induced in 24 of 48 permanent maxillary incisors. Read More

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http://dx.doi.org/10.1259/dmfr.20200093DOI Listing

Differences in the corono-apical location of sinus tracts and buccal cortical bone defects between vertically root-fractured and non-root-fractured teeth based on periradicular microsurgery.

J Oral Sci 2020 Jun 31;62(3):327-330. Epub 2020 May 31.

Department of Pulp Biology and Endodontics, Division of Oral Health Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University.

This retrospective study aimed to investigate whether the corono-apical location of sinus tracts differs according to the presence/location of vertical root fracture (VRF) in microsurgically treated root-filled teeth. The cases included were (1) anterior and premolar teeth without a preoperative diagnosis of VRF, (2) those with a periodontal probing depth of ≤3 mm, and (3) those for which preoperative cone-beam computed tomography (CBCT) scans and intraoperative video records were available. VRF was diagnosed intraoperatively. Read More

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http://dx.doi.org/10.2334/josnusd.19-0328DOI Listing

International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: 1. Fractures and luxations.

Dent Traumatol 2020 May 31. Epub 2020 May 31.

Faculty of Medicine and Dentistry, University of Alberta, Alberta, Canada.

Traumatic dental injuries (TDIs) of permanent teeth occur frequently in children and young adults. Crown fractures and luxations of these teeth are the most commonly occurring of all dental injuries. Proper diagnosis, treatment planning and follow up are important for achieving a favorable outcome. Read More

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http://dx.doi.org/10.1111/edt.12578DOI Listing

International Association of Dental Traumatology guidelines for the management of traumatic dental injuries: General introduction.

Dent Traumatol 2020 May 30. Epub 2020 May 30.

UWA Dental School, University of Western Australia, Perth, WA, Australia.

Traumatic dental injuries (TDIs) occur most frequently in children and young adults. Older adults also suffer TDIs but at significantly lower rates than individuals in the younger cohorts. Luxation injuries are the most common TDIs in the primary dentition, whereas crown fractures are more commonly reported for the permanent teeth. Read More

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http://dx.doi.org/10.1111/edt.12574DOI Listing

Effect of indenter material on reliability of all-ceramic crowns.

J Mech Behav Biomed Mater 2020 Aug 28;108:103831. Epub 2020 Apr 28.

Department of Restorative Dentistry, Federal University of Minas Gerais, FO/UFMG, Brazil.

Objectives: Controversy exists about whether the elastic modulus (E) mismatch between the loading indenter and ceramic materials influences fatigue testing results. The research hypotheses were that for porcelain veneered Y-TZP crowns 1) A low modulus Steatite indenter (SB) leads to higher fatigue reliability compared to a high modulus tungsten carbide indenter (WC); 2) Different surface damage patterns are expected between low and high modulus indenters after sliding contact fatigue testing. All ceramic crowns will exhibit similar step-stress accelerated life testing (SSALT) contact fatigue reliability (hypothesis 1) and failure characteristics (hypothesis 2) when using high stiffness tungsten carbide (WC, E = 600 GPa) vs. Read More

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http://dx.doi.org/10.1016/j.jmbbm.2020.103831DOI Listing

[Fracture strength of various types of direct and indirect restorations in the functional repair of endodontically treated molars].

Ned Tijdschr Tandheelkd 2020 Apr;127(4):245-253

The fracture strength of endodontically treated molars restored by means of various types of direct and indirect materials was studied in vitro. 105 sound molars were endodontically treated and randomly assigned to 1 control group (endodontic access cavity only) and 6 experimental groups (n = 15) with restorations of the following materials: glass fibre reinforced composite (GFRC); microhybrid composite (C); microhybrid composite restoration with glass fiber post (CP); full-contour lithium disilicate crown (LDS); full-contour lithium disilicate crown with glass fiber post (P-LDS); and an endocrown (EC). Specimens were thermo-mechanically aged and axially loaded until failure. Read More

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http://dx.doi.org/10.5177/ntvt.2020.04.19093DOI Listing

Bisphosphonate Therapy and Tooth Development in Children and Adolescents with Osteogenesis Imperfecta.

Calcif Tissue Int 2020 May 25. Epub 2020 May 25.

Department of Woman and Child Health, Karolinska Institutet, Stockholm, Sweden.

Osteogenesis imperfecta (OI) is a heterogeneous connective tissue disorder characterized by repeated fractures and skeletal disorders. At present, bisphosphonate (BP) therapy is the gold standard for OI treatment. The present retrospective study evaluated the effect of BP therapy on tooth development and eruption of permanent teeth in a cohort of children receiving pamidronate. Read More

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http://dx.doi.org/10.1007/s00223-020-00707-1DOI Listing

Dental injuries at the Xi'an, China Stomatological Hospital: A Retrospective Study.

Dent Traumatol 2020 May 25. Epub 2020 May 25.

State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi International Joint Research Center for Oral Diseases, Department of General Dentistry and Emergency, School of Stomatology, The Fourth Military Medical University, Xi'an, China.

Background/aim: In order to enrich epidemiological knowledge regarding traumatic dental injuries (TDI) in China, and to further improve the treatment, prevention and education of TDI, the aim of this study was to retrospectively analyze the TDI that presented to the emergency dental department at the Stomatological Hospital in Xi'an, China.

Methods: This retrospective study included all first-visit patients who presented with TDI at the Stomatological Hospital affiliated with the Fourth Military Medical University in Xi'an, China, between January 2013 and June 2019. Data were extracted using the terms of diagnosis of TDI from the hospital database. Read More

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http://dx.doi.org/10.1111/edt.12572DOI Listing

Abfraction: Etiopathogenesis, clinical aspect, and diagnostic-treatment modalities: A review.

Indian J Dent Res 2020 Mar-Apr;31(2):305-311

Department of Oral Biology and Genomic Studies, A B Shetty Memorial Institute of Dental Sciences, Nitte (Deemed to be University), Mangalore, Karnataka, India.

Background: Abfraction is a loss of tooth structure along the gingival margin and manifests with different clinical appearances. It has multifactorial etiology and may occur due to normal and abnormal tooth function and may also be accompanied by pathological wear, such as abrasion and erosion. The theory behind the abfraction is that the tooth flexure in the cervical area is caused due to occlusal compressive forces and tensile stresses. Read More

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http://dx.doi.org/10.4103/ijdr.IJDR_863_18DOI Listing

Acknowledgement of horizon of oral and maxillofacial surgery by health care professionals and general population.

Indian J Dent Res 2020 Mar-Apr;31(2):257-262

Department of Maxillofacial Surgery, Govt Dental College and Hospital, RIMS, Kadapa, Andhra Pradesh, India.

Background: Oral and maxillofacial surgery (OMFS) is a dental specialty evolving from the anatomical region of head and neck. Differing from the belief, its scope does not start and end with teeth. The aim of the study was to survey the perception of OMFS among dental, medical, and paramedical professionals. Read More

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http://dx.doi.org/10.4103/ijdr.IJDR_763_18DOI Listing

Combined Endo-restorative Treatment of a Traumatized Central Incisor: A Five-year Follow-up.

J Adhes Dent 2020 ;22(3):249-254

Purpose: The management of complicated crown-root fractures is challenging for endodontic restoration. The present case describes a patient who sustained trauma to the maxillary right central incisor.

Materials And Methods: Clinical and radiographic examination showed a complicated crown-root fracture and incomplete root development with periapical radiolucency and inadequate endodontic treatment with overfilling. Read More

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http://dx.doi.org/10.3290/j.jad.a44548DOI Listing

Intentional replantation with 180° rotation of a complicated crown-root fracture: A Case Report.

Trauma Case Rep 2020 Jun 11;27:100306. Epub 2020 May 11.

Sri Sankara Dental College, Varkala, Kerala, India.

Complicated crown root fractures are mostly difficult to treat and have a poor prognosis. To restore the biological space, intentional replantation may be chosen when other immediate treatment options are not viable. Intentional replantation with tooth rotation consists of extraction, 180° rotation and replantation, thereby maintaining the biological width. Read More

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http://dx.doi.org/10.1016/j.tcr.2020.100306DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7218210PMC

Accuracy of High-Resolution Small-Volume Cone-Beam Computed Tomography in the Diagnosis of Vertical Root Fracture: a In Vivo Analysis.

J Endod 2020 May 14. Epub 2020 May 14.

Department of Dentistry, State University of Maringá, Maringá, Paraná, Brazil.

Introduction: The purpose of this in vivo study was to evaluate the accuracy of small-volume cone-beam computed tomography (CBCT) compared to conventional periapical radiographs (CPR) in the diagnosis of vertical root fractures (VRF), using exploratory surgery (ES) as the reference standard.

Methods: Eighty-two dental records of 85 teeth with suspected VRFs which underwent CPR, CBCT and ES were included. Two observers assessed CPR and CBCT images independently for the presence or absence of root fractures, and findings from the ES were considered the reference standard. Read More

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http://dx.doi.org/10.1016/j.joen.2020.04.015DOI Listing
May 2020
3.375 Impact Factor

Fiber Reinforcement of Endodontically Treated Teeth: What Options Do We Have? Literature Review.

Eur J Prosthodont Restor Dent 2020 May 28;28(2):54-63. Epub 2020 May 28.

City of Turku Welfare Division, Oral Health Care, Turku, Finland.

The restoration of endodontically treated teeth (ETT), even though practiced for many years, remains a major concern in dentistry. There is a variety of materials and clinical techniques advocated for restoring ETT and hundreds of studies devoted to this subject have been published in the dental literature. This narrative review article was undertaken to answer a question regarding restoration of ETT with available evidence: What fiber reinforcement options do we have other than prefabricated fiber post? Using a Medline search (up to 2019) and resulting cross-references, authors selected original research on the topic of fiber-reinforced composite (FRC) and restoration of ETT. Read More

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http://dx.doi.org/10.1922/EJPRD_2002Garoushi10DOI Listing

[CLINICAL STUDY OF THE STATE OF RESIN-BONDED FIXED PARTIAL DENTURES IN INDIVIDUALS WITH HIGH TEETH ABRASION].

Georgian Med News 2020 Mar(300):32-37

2Shupyk National Medical Academy of Postgraduate Education, Kiev, Ukraine.

The object of the paper is a clinical assessment of the resin-bonded fixed partial dentures (RBFPD) produced by the indirect method of dental composite resin materials with various reinforcement, in patients with I degree high teeth abrasion. 80 persons with I degree high teeth abrasion and small defects in the lateral part of dental arch with a length of not more than one tooth were examined. For patients of I group, 40 RBFPDs were made of nano dental composite resin and three glass fiber tapes laid horizontally; for patients of II group, 40 RBFPDs made of hardened nano dental composite resin were reinforced with the same tapes laid by the developed method. Read More

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An Comparative Study to Assess Minimal Thickness Required for Monolithic Zirconia Crowns to Resist Fracture under Load on Rapid Prototyped Models.

J Contemp Dent Pract 2020 Feb 1;21(2):183-189. Epub 2020 Feb 1.

Department of Prosthodontics, Sri Ramakrishna Dental College and Hospital, Coimbatore, Tamil Nadu, India; The Tamil Nadu Dr MGR Medical University, Chennai, Tamil Nadu, India.

Aim: To evaluate and validate minimal thickness required for computer-aided designed (CAD) and computer-aided manufactured (CAM) monolithic zirconia crowns to withstand occlusal load. The study compares two systems.

Materials And Methods: Forty-eight rapid prototype die models with varying occlusal reductions were fabricated. Read More

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February 2020

Ridge Preservation Strategies in Children Following Anterior Tooth Trauma.

Compend Contin Educ Dent 2020 May;41(5):264-270; quiz 271

Affiliate Professor, Graduate Periodontics Program, Department of Periodontics, School of Dentistry, University of Washington, Seattle, Washington.

The sequelae associated with anterior oral trauma during childhood growth may require a protracted period of clinical management to achieve an optimal foundation for future prosthetic therapy. This article presents two case examples of long-term ridge development and preservation in children after anterior dental and alveolar trauma. These two patients were managed for periods of 11 years, one from age 8 to 19 and the other from age 9 to 20, until they were old enough to receive implantsupported restorations. Read More

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Oral and Dental Examination Findings in European Polecats (Mustela putorius).

J Comp Pathol 2020 Apr 19;176:39-49. Epub 2020 Mar 19.

Dentistry and Oral Surgery Department, Small Animal Clinic, Veterinary Faculty, University of Ljubljana, Ljubljana, Slovenia. Electronic address:

Dental and oral diseases in the domestic ferret have been reported, but comparison with their closest wild relative, the European polecat (Mustela putorius), is lacking. Dental and orofacial pathology was evaluated by means of visual examination and dental radiographical analysis of 234 museum skulls. Most of these (70. Read More

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http://dx.doi.org/10.1016/j.jcpa.2020.02.004DOI Listing

Consequences of tooth luxation associated with complicated crown fracture: a case report.

Gen Dent 2020 May-Jun;68(3):57-61

The objective of this clinical case report is to describe the late treatment performed in a 10-year-old patient who suffered a complicated crown fracture associated with luxation of the maxillary left central incisor. The patient-s parents reported that the patient fell and was immediately taken to a hospital, where radiographs, splinting, and suturing were performed and an anti-inflammatory prescription was provided, but no treatment was given for the exposed pulp. The parents and patient sought treatment at a pediatric dentistry clinic 16 days post-trauma. Read More

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[Fracture resistance of endodontically treated maxillary premolars restored with different CAD/CAM all-ceramic restorations].

Shanghai Kou Qiang Yi Xue 2019 Dec;28(6):578-580

Department of Stomatology, Hengdian Wenrong Hospital. Dongyang 322118, Zhejiang Province, China.

Purpose: This study was to evaluate the fracture resistance of endodontically treated maxillary premolars restored with different CAD/CAM all-ceramic restorations in vitro.

Methods: Mesio-occluso-function tip(MOF) cavities were prepared in 21 extracted human maxillary premolars due to endodontic treatment. The teeth were divided into 3 groups. Read More

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December 2019

Direct composite resin restoration of a class IV fracture by using 3D printing technology: A clinical report.

J Prosthet Dent 2020 Apr 23. Epub 2020 Apr 23.

Lecturer, Department of Operative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, PR China. Electronic address:

Mimicking the appearance of the adjacent natural tooth is challenging when restoring a fractured anterior tooth. This clinical report describes a modified index technique for restoring a class IV defect. A replica of the restored tooth was fabricated with computer-aided design and 3D printing technology, which precisely mimicked the contralateral incisor. Read More

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http://dx.doi.org/10.1016/j.prosdent.2020.02.017DOI Listing

Effect of Ferrule Thickness on Fracture Resistance of Endodontically Treated Incisors Restored with Fiber Post and Metal Crown.

Int J Prosthodont 2020 May/Jun;33(3):321-327

Purpose: To assess the influence of ferrule thickness on the fracture resistance and failure mode of endodontically treated bovine incisors and to predict the long-term prognosis, as well as choose the most suitable clinical treatment, for teeth with different ferrule thicknesses.

Materials And Methods: A total of 50 endodontically treated bovine incisors were restored with quartz fiber posts and metal crowns and separated into five groups (n = 10 each): no ferrule (group A); 0.5-mm-thick ferrule (group B); 1. Read More

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http://dx.doi.org/10.11607/ijp.6423DOI Listing

Management of Subgingival Root Fracture with Decoronation and Orthodontic Extrusion in Mandibular Dentition: A Report of Two Cases.

Contemp Clin Dent 2019 Jul-Sep;10(3):554-557

Department of Orthodontics and Dentofacial Orthopedics, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India.

Incidence of horizontal root fracture in permanent dentition is relatively uncommon with reported incidence being <7%. Treatment and prognosis of such injuries vary with the location of fracture line. More apical the fracture lines more likely the favorable outcome. Read More

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http://dx.doi.org/10.4103/ccd.ccd_736_18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7150556PMC

Fracture necrosis: A risk indicator for tooth loss.

J Am Dent Assoc 2020 Jun 15;151(6):454-463. Epub 2020 Apr 15.

Background And Overview: The term "fracture necrosis" has been used to describe the condition found in a minimally restored tooth without a history of trauma when the suspected etiology for the loss of pulpal vitality is a crown-originating fracture. Teeth with fracture necrosis have a poor prognosis, and, when accompanied by characteristic radiographic findings, extraction may be considered the primary treatment option.

Case Descriptions: Two adult men with crown-originating fractures and suspected fracture necrosis had localized periodontal bone and attachment loss associated with severe pain on mastication from mandibular second molars. Read More

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http://dx.doi.org/10.1016/j.adaj.2020.01.024DOI Listing

Acoustic properties of fracture of dental restorative materials and endocrown restorations under quasi-static loading.

Dent Mater 2020 May 13;36(5):617-625. Epub 2020 Apr 13.

Department of Automobile and Transport Technology, Lutsk National Technical University, 75 Lvivska Str., Lutsk 43018, Ukraine(3).

Objectives: (1) To investigate the properties of acoustic emission (AE) signals from fracture of dental materials and endocrown restorations during quasi-static compression using the continuous wavelet transform analysis. (2) To determine by the parameters of AE signals in which structural element of tooth-endocrown system the fracture starts.

Methods: Five restorative materials (zirconium dioxide (Prettau zirconia), ceramics (IPS e. Read More

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http://dx.doi.org/10.1016/j.dental.2020.03.014DOI Listing

Atypical Developmental Defects of Enamel in Primary Incisors Versus Preeruptive Intracoronal Resorption (PEIR): Case Reports.

Pediatr Dent 2020 Mar;42(2):146-149

Dr. Fuks is a professor emeritus, Hebrew University, Hadassah School of Dental Medicine, Jerusalem, Israel.

Developmental defects of enamel (DDE) in children range from moderate to severe and may predispose to dental fractures and early childhood caries. The prevalence of DDE in the primary dentition range from 24 to 75 percent, and the right time to diagnose DDE should be as soon as the teeth erupt. However, early detection of DDE in primary incisors is difficult because parents seldom visit the dentist at this age and, later on, caries lesions mask the original alteration. Read More

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An In Vitro Comparison of Indirect Versus Direct Restorations of Incisal Edge Fractures.

Pediatr Dent 2020 Mar;42(2):141-145

Dr. Simon is a professor and director, Division of Operative Dentistry, College of Dentistry, University of Tennessee Health Science Center, Memphis, Tenn., USA.

To compare fracture strength, failure mode, and chairside time of Class IV fractures restored with CEREC (Chairside Economic Restorations of Esthetic Ceramics) technology or direct composite. Forty-eight fractured anterior bovine teeth were randomly assigned to three experimental groups (indirect restoration) with margin designs including: A) butt joint, B) short chamfer (one mm), and C) long chamfer (two mm) and a control group (direct composite). Preparations were scanned; restorations were milled from zirconia-reinforced lithium-silicate blocks and cemented. Read More

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Evaluating the fracture resistance of fiber reinforced composite restorations - An analysis.

Indian J Dent Res 2020 Jan-Feb;31(1):138-144

Department of Pedodontics and Preventive Dentistry, GITAM Dental College and Hospital, Visakhapatnam, Andhra Pradesh, India.

Background: Laboratory reports show that fiber-reinforced composites have improved fracture resistance over traditional composites. However, limitations in the biomechanics of tests to evaluate the fracture resistance of fiber-reinforced composites need to be considered for accurate clinical applications.

Aim: To assess the fracture resistance of particulate filler composites, glass fiber-reinforced composites, and polyethylene-fiber reinforced composites by analyzing the different fracture types and failure patterns. Read More

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http://dx.doi.org/10.4103/ijdr.IJDR_465_18DOI Listing

Beak and bumper - Physics forceps: Evaluation of new technique in extraction.

Indian J Dent Res 2020 Jan-Feb;31(1):4-13

Department of Oral and Maxillofacial Surgery, Indira Gandhi Institute of Dental Science, Sri Balaji Vidyapeeth (Deemed To Be University), Puducherry, India.

Purpose: The history of dentistry is not short; it started from ancient Egypt to ancient Romans and ancient Greeks. When it comes to extraction, all of them have made their own discoveries and progress. The progress they made also helped dentistry to move ahead in evolution of new extraction technique - the Physics Forceps. Read More

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http://dx.doi.org/10.4103/ijdr.IJDR_433_18DOI Listing

Mutations in COL1A1/A2 and CREB3L1 are associated with oligodontia in osteogenesis imperfecta.

Orphanet J Rare Dis 2020 Mar 31;15(1):80. Epub 2020 Mar 31.

Department of Dental Medicine, Division of Orthodontics and Pediatric Dentistry, Karolinska Institutet, POB 4064, SE-141 04, Huddinge, Sweden.

Background: Osteogenesis imperfecta (OI) is a heterogeneous connective tissue disorder characterized by an increased tendency for fractures throughout life. Autosomal dominant (AD) mutations in COL1A1 and COL1A2 are causative in approximately 85% of cases. In recent years, recessive variants in genes involved in collagen processing have been found. Read More

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http://dx.doi.org/10.1186/s13023-020-01361-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7110904PMC

Laboratory performance and fracture resistance of CAD/CAM implant-supported tooth-coloured anterior FDPs.

J Dent 2020 May 20;96:103326. Epub 2020 Mar 20.

Department of Prosthetic Dentistry, UKR University Hospital Regensburg, 93042, Regensburg, Germany.

Objectives: This study investigated the in-vitro performance and fracture force of anterior implant-supported tooth-coloured fixed dental prosthesis (FDPs). Different material types with varying flexural strength and modulus of elasticity were compared with screw-retained or bonded application.

Materials And Methods: Identical anterior FDPs (tooth 11-13; n = 80) from materials (flexural strength 240-1150 MPa, modulus 7. Read More

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http://dx.doi.org/10.1016/j.jdent.2020.103326DOI Listing

Root canal reconstruction using biological dentin posts: A 3D finite element analysis.

J Dent Res Dent Clin Dent Prospects 2019 ;13(4):274-280

Dental Prosthetics Technology, Vocational School of Health Services, Bahçeşehir University, Istanbul, Turkey.

Several types of post have been developed for clinical use. A biological dentin post obtained from an extracted tooth eliminates the problems arising from material differences and reduces the fracture rate in teeth undergoing root canal treatment. This study used finite element analysis to compare a biological dentin post with posts made of two different materials. Read More

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http://dx.doi.org/10.15171/joddd.2019.042DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7072088PMC
January 2019

Cyclic Fatigue Comparison of TruNatomy, Twisted File, and ProTaper Next Rotary Systems.

Int J Dent 2020 26;2020:3190938. Epub 2020 Feb 26.

Department of Restorative Dental Sciences, College of Dentistry, King Saud University, P.O. Box 60169, Riyadh 11545, Saudi Arabia.

TruNatomy (TN; Dentsply Sirona, Maillefer, Ballaigues, Switzerland) is a newly released system that was not tested in any previous studies. The objective of this work is to evaluate cyclic fatigue resistance of the new file and compare it with the Twisted Files (TF) and ProTaper Next (PTN). Forty-five files were distributed into 3 groups: PTN X2 (size 25 and taper 0. Read More

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http://dx.doi.org/10.1155/2020/3190938DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7061136PMC
February 2020

Comparison of Enamel Preparations - Bevel, Chamfer and Stair Step Chamfer on Fracture Resistance of Nano Filled Resin Composites Using Bulk Pack Technique - An In Vitro Study.

Open Access Maced J Med Sci 2019 Dec 10;7(23):4089-4093. Epub 2019 Dec 10.

Department of Public Health Dentistry, SMBT Dental College and Hospital, Sanagmner, Maharashtra 422608, India.

Aim: To evaluate and compare the effect of enamel preparation designs bevel, chamfer and stair-step chamfer on the fracture resistance of nanocomposite.

Methods: The sample group of this study consisted of 72 non-carious permanent maxillary central incisors. The sample is divided into four groups of 18 each. Read More

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http://dx.doi.org/10.3889/oamjms.2019.853DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7061382PMC
December 2019

The adverse effects of radiotherapy on the structure of dental hard tissues and longevity of dental restoration.

Int J Radiat Biol 2020 Mar 26:1-9. Epub 2020 Mar 26.

Interoperative Research Center in Dental and Medical Sciences, Faculty of Dentistry, Universidad de Valparaíso, Valparaíso, Chile.

The main goal of this study was to evaluate the impact of different ionizing radiation doses on the mineral (carbonate/phosphate ratio, crystallinity index [CI]) and organic (amide III/phosphate, amide I sub-band ratios) structures, as well as the microhardness, of enamel and dentin, along with their influence on the bonding strength stability of the etch-and-rinse (ER) and self-etch (SE) dental adhesive strategies. Enamel and dentin human tissue specimens were irradiated (with 0, 20, 40, and 70 Gy radiation doses, respectively) and sectioned to perform an attenuated total reflection-Fourier transform IR spectroscopy assay (ATR-FTIR) and the Vickers microhardness (VHN) test to conduct a biochemical and biomechanical evaluation of the tissues. Regarding the adhesive properties, restored enamel and dentin specimens exposed to the same radiation doses were submitted to microshear bond strength (μSBS) tests for enamel in immediate time (IM) and to microtensile bond strength (μTBS) tests after for IM and 12-month (12 M) period of time, Mann-Whitney U tests were implemented, using the ATR-FTIR data for significant differences (α < 0. Read More

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http://dx.doi.org/10.1080/09553002.2020.1741718DOI Listing

An Immunofluorescence Study to Analyze Wound Healing Outcomes of Regenerative Endodontics in an Immature Premolar with Chronic Apical Abscess.

J Endod 2020 May 2;46(5):627-640. Epub 2020 Mar 2.

Private Practice, Cetraro, Italy.

Introduction: Limited studies have examined tissue formation via immunofluorescence in regenerative endodontic procedures (REPs) performed on infected human teeth. This report investigated the immunofluorescent histologic outcomes of REPs in which repeated canal disinfection was required.

Methods: An 11-year-old girl presented with a fractured dens evaginatus (#29) with a sinus tract. Read More

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http://dx.doi.org/10.1016/j.joen.2020.01.015DOI Listing

CAD/CAM Customized Glass Fiber Post and Core With Digital Intraoral Impression: A Case Report.

Clin Cosmet Investig Dent 2020 10;12:17-24. Epub 2020 Feb 10.

Department of Clinical Sciences and Translational Medicine, University Tor Vergata, Rome, Italy.

Background: After endodontic treatment, a proper restorative technique is necessary to ensure coronal seal and protection of residual dental structure; teeth which have lost two or more walls need to be restored with posts to increase retention and stability of final restoration. Posts can be distinguished in prefabricated and customized, which are manufactured by lost wax technique or CAD-CAM.

Purpose: Digital dentistry has been developed to increase workflow precision and to accelerate production process; use of CAD-CAM to realize customized posts was limited to scanning plaster models obtained from traditional impressions. Read More

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http://dx.doi.org/10.2147/CCIDE.S237442DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7021168PMC
February 2020

Which materials would account for a better mechanical behavior for direct endocrown restorations?

J Mech Behav Biomed Mater 2020 Mar 10;103:103592. Epub 2019 Dec 10.

Graduate Program in Dentistry, Federal University of Pelotas, Pelotas, Brazil. Electronic address:

Purpose: To investigate the mechanical performance and fracture behavior of endocrown restorations prepared using different composite materials and following a direct technique.

Methods: Sound molars were cut at 2 mm above the cementoenamel junction, endodontically treated, and allocated according to the type of restoration (n = 7): without post (endocrowns) or with post (post-retained restorations). Endocrowns were fabricated with conventional composite (Filtek Z350); bulk fill composite (Filtek Bulk Fill); conventional composite modeled using resin adhesives (SBMP: Scotchbond Multipurpose Adhesive; or SBU: Scotchbond Universal Adhesive); and lithium disilicate ceramic (E. Read More

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http://dx.doi.org/10.1016/j.jmbbm.2019.103592DOI Listing

Mechanical performance of monolithic materials cemented to a dentin-like substrate.

J Prosthet Dent 2020 May 20;123(5):753.e1-753.e7. Epub 2020 Feb 20.

Professor, Dental Prosthesis, Department of Dentistry, University of Taubate (UNITAU), Taubate, Brazil. Electronic address:

Statement Of Problem: Studies on the mechanical behavior of restorative materials bonded to tooth structure and considering the properties of the material and the bonding between both substrates are lacking.

Purpose: The purpose of this in vitro study was to evaluate the hardness, fracture toughness, load-to-failure, cyclic fatigue, and stress distribution of 4 computer-aided design and computer-aided manufacturing (CAD-CAM) materials when bonded to a substrate similar to dentin (G10).

Material And Methods: Disks (11×1. Read More

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http://dx.doi.org/10.1016/j.prosdent.2019.12.021DOI Listing

Influence of infliximab therapy on bone healing post-dental extraction in rats.

Arch Oral Biol 2020 Apr 7;112:104680. Epub 2020 Feb 7.

Departament of Dental Clinic - Federal University of Ceara, Fortaleza, Ceará, Brazil.

Objective: TNF-α, which acts directly on osteoclastogenesis, may modify bone turnover. Thus, the objective of this study was to evaluate the influence of infliximab on extraction socket healing.

Material And Methods: Eighty-four Wistar rats were randomized into two groups (infliximab EV 5 mg / kg or saline EV 1 ml / kg) and submitted to lower first molar extraction protocol. Read More

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http://dx.doi.org/10.1016/j.archoralbio.2020.104680DOI Listing

A Retrospective Study on the Success, Survival, and Incidence of Complications of Post-Retained Restorations in Premolars Supporting Fixed Dental Prostheses with a Mean of 7 Years in Function.

Int J Prosthodont 2020 Mar/Apr;33(2):176-183

Purpose: To evaluate the survival and success rates of post-and-core restorations supporting fixed dental prostheses (FDPs) after a mean time in function of 7 years and to assess the incidences of biologic and technical complications.

Materials And Methods: Patients from the National Dental Center Singapore (NDCS) with endodontically treated premolars restored with post-retained FDPs from 2007 to 2009 were recruited from the Endodontic Registry and evaluated by three clinicians. A total of 265 patients with 329 treated premolars were examined clinically. Read More

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http://dx.doi.org/10.11607/ijp.6090DOI Listing
February 2020
1.185 Impact Factor

Reattachment of a Dehydrated Tooth Fragment Using Retentive Holes.

Cureus 2020 Jan 13;12(1):e6640. Epub 2020 Jan 13.

Pediatric Dentistry, Ministry of Health, Riyadh, SAU.

Coronal fracture of the anterior teeth is mainly common among children and adolescents. Though diverse treatment modalities are available, tooth fragment reattachment is generally considered a viable treatment option due to simplicity, natural aesthetics, and functional success. This paper presents a case of a 10. Read More

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http://dx.doi.org/10.7759/cureus.6640DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7011574PMC
January 2020