نتایج جستجو برای: root fracture

تعداد نتایج: 231945  

2017
Swetha Reddy

Vertical root fracture(VRF) is one of the common reasons for extraction of endodontically treated teeth. Though many options of saving such teeth were available, they were not of much success. Therefore the objective of this article is to discuss one such case. A 50 year old male patient reported with Vertical root fracture and 15 mm of periodontal probing depth in the distal aspect of 14. Radi...

Journal: :dental research journal 0
samir zahedpasha hengameh safarcherati manouchehr rahmati-kamel javad mehrani-sabet

this case report describes the multidisciplinary management of subgingival horizontal crown–root fracture of an immature permanent maxillary central incisor in a 10-year-old boy. after removal of the fractured fragment, pulpotomy was performed within 48 h from the injury to promote apexogenesis. the tooth was orthodontically extruded until the fracture line was located above the alveolar bone l...

Journal: :Journal of endodontics 1984
R E Walton R J Michelich G N Smith

Fractured roots were examined histologically, using different stains, to study the morphological fracture patterns and to identify potential irritants. Fractures were usually, but not always, complete and extended from a surface to include the root canal. The potential irritants identified in both the fracture space and communicating canal were bacteria, necrotic tissue, food debris, and uniden...

Journal: :journal of dental school, shahid beheshti university of medical sciences 0
شیرین سخدری shirin sakhdari dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران. پیمان مهرورزفر peyman mehrvarzfar dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران. سمیه صفری somayeh safari مریم پژوتن maryam pazhutan dental school, islamic azad university, tehran-iran.دانشکده دندانپزشکی، دانشگاه آزاد اسلامی، واحد تهران محمدجواد خرازی فرد mohammad-javad kharazifard tehran university of medical sciences, tehran-iran.دانشگاه علوم پزشکی تهران

objective: vertical root fracture (vrf) is among the most common causes of endodontic treatment failures. this study aims to compare charge-coupled devices (ccd) and photostimulable phosphor plates (psp) for detection of vertical root fractures in endodontically treated teeth.   methods: in this diagnostic in vitro study, 40 maxillary anterior teeth were selected and after preparation and root ...

Introduction: Root canal instrumentation is an important phase in root canal therapy. Since success in endodontic treatment depends on file defect and fracture, the aim of this study was to compare the evaluation of defect and fracture in rotary and reciproc files in severe curved root canals. Materials & Methods: In this experimental study, 60 mesial canals of human closed apex molars with ...

خاموردی, زهرا , شیرین زاد, مهدی , قربانی, سعید ,

Introduction & Objective: Preparation of access cavity to root canal is a critical phase in endo-dontic treatment. The purpose of this study was to evaluate the effect of access cavity loca-tion (labial or palatal) on fracture resistance of endodontically treated maxillary central teeth. Materials & Methods: In this experimental laboratorial study, 84 intact human maxillary central incisors w...

Journal: :Dental materials journal 2012
Burak Sağsen Yakup Ustün Kanşad Pala Sezer Demırbuğa

The aim of this study was to compare the fracture resistance of roots filled with gutta percha (GP) and different root canal sealers.Fifty-five human maxillary central incisors were selected and randomly divided into three experimental groups (Groups 1-3) and two control groups (Groups 4 and 5). They were Group 1-15 root canals filled with an epoxy resin-based sealer (AH Plus) and GP, Group 2 -...

Journal: :The journal of contemporary dental practice 2016
Sukriti Tiwari Pradnya Nikhade Manoj Chandak C Sudarshan Priyadarshini Shetty Naveen K Gupta

INTRODUCTION Irrigating solutions are used for cleaning and removing dentinal debris, and the other remains from pulpal space during biomechanical preparation. Therefore, we evaluated the impact of various irrigating agents on root fracture at 5-minute time exposure. MATERIALS AND METHODS We sectioned 60 permanent maxillary premolars with fully formed root structures transversely maintaining ...

2015
Saeid Tavanafar Azadeh Karimpour Hamideh Karimpour Abdulrahman Mohammed Saleh Musab Hamed Saeed

STATEMENT OF THE PROBLEM Vertical root fractures are catastrophic events that often result in tooth extraction. Many contributing factor are associated with increasing incidence of vertical root fracture. Root canal preparation is one of the predisposing factors which can increase the root susceptibility to vertical fracture. PURPOSE The aim of this study was to compare the effects of three d...

2011
Lucas Villaça ZOGHEIB Guilherme de Siqueira Ferreira Anzaloni SAAVEDRA Paula Elaine CARDOSO Márcia Carneiro VALERA Maria Amélia Máximo de ARAÚJO

OBJECTIVE This study evaluated, in vitro, the fracture resistance of human non-vital teeth restored with different reconstruction protocols. MATERIAL AND METHODS Forty human anterior roots of similar shape and dimensions were assigned to four groups (n=10), according to the root reconstruction protocol: Group I (control): non-weakened roots with glass fiber post; Group II: roots with composit...

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