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endodontic access

Qianzhou Jiang, Yuting Huang, XinRan Tu, Zhengmao Li, Ying He, Xuechao Yang
INTRODUCTION: The aim of this study was to compare the biomechanical properties of first maxillary molars with different endodontic cavities using the finite element method. METHODS: Three finite element analysis models of a maxillary first molar were designed and constructed with 3 different types of endodontic cavities: a traditional endodontic cavity, a conservative endodontic cavity, and an extended endodontic cavity. An intact tooth model was used for comparison...
June 14, 2018: Journal of Endodontics
M Reymus, C Fotiadou, A Kessler, K Heck, R Hickel, C Diegritz
AIM: To assess the feasibility of producing artificial teeth for endodontic training using 3D printing technology, to analyse the accuracy of the printing process, and to evaluate the teeth by students when used during training. METHODOLOGY: Sound extracted human teeth were selected, digitalized by cone beam computed tomography (CBCT) and appropriate software and finally reproduced by a stereolithographic printer. The printed teeth were scanned and compared with the original ones (trueness) and to one another (precision)...
June 14, 2018: International Endodontic Journal
Shaik Izaz, Bhargavi Dasari, Nagesh Bolla, Prasanna Neelakantan
Clinicians proceed the canal exploration according to the literature so far reported. At times, there are apparent variations in the teeth. These discrepancies should be thoroughly surveyed and piled up to date. One such rare complexity of canal morphology was discussed in the present case. A 48-year-old female patient referred to the endodontic clinic for full-mouth rehabilitation. On intraoral hard-tissue examination, decay was noted in multiple teeth which were confirmed by an orthopantomogram and endodontic treatment plan was suggested...
May 2018: Journal of Conservative Dentistry: JCD
Bárbara Suelen Moccelini, Nashalie Andrade de Alencar, Michele Bolan, Marcela Baraúna Magno, Lucianne Cople Maia, Mariane Cardoso
BACKGROUND: The association between pulp necrosis and crown discoloration in traumatized primary teeth has not been clearly determined yet. AIM: The study verified whether there is an association of pulp necrosis and crown discoloration in traumatized primary teeth through a systematic review and meta-analysis. METHODS: A systematic literature search was conducted in PubMed/Medline, Lilacs/BBO, Scopus, Web of Science, Cochrane Library databases, and grey literature...
June 12, 2018: International Journal of Paediatric Dentistry
Carla Zogheib, Germain Sfeir, Gianluca Plotino, Gustavo De Deus, Maha Daou, Issam Khalil
Objective: Minimal invasive endodontics preserve coronal and radicular tooth structure to increase the fracture resistance of teeth. The aim of this study was to assess the influence of final preparation taper on the fracture resistance of maxillary premolars. Materials and Methods: Sixty maxillary premolars were selected and divided into 2 groups: 30 were shaped with a final apical diameter 30 and a 4% taper and 30 with 6% taper using iRaCe® instrument (FKG dentaire, Switzerland)...
March 2018: Journal of International Society of Preventive & Community Dentistry
Saeed Asgary, Prashant Verma, Ali Nosrat
Iatrogenic perforations negatively impact the outcome of endodontic treatments. Studies on prognostic factors showed that perforations in the coronal third of the root with periodontal pocket formation have an unfavorable prognosis. A 36-year-old female was referred for endodontic evaluation of tooth #13 with a history of an iatrogenic perforation, happened 3 years ago. There was a sinus tract associated with perforation, 10 mm probing on the mesial and mesio-palatal, bleeding on probing, radiolucent lesion adjacent to the perforation and complete resorption of the interdental bone between teeth #13 and #12...
May 2018: Restorative Dentistry & Endodontics
Manja von Stein-Lausnitz, M Bruhnke, M Rosentritt, G Sterzenbach, K Bitter, R Frankenberger, M Naumann
OBJECTIVES: The aim of this ex-vivo study was to evaluate the impact of cavity size and glass-fiber post (GFP) placement on the load capability of endodontically treated maxillary incisors directly restored with resin composite. MATERIALS AND METHODS: Ninety-six extracted human maxillary central incisors were endodontically treated and distributed to four groups (n = 24): access cavity (A), access cavity and uni-proximal class III cavity (U), access cavity and bi-proximal class III cavity (B), and decoronated tooth (D)...
April 30, 2018: Clinical Oral Investigations
Mohsen Rezaeian, Maryam Rouhani Tonekaboni, Foad Iranmanesh
Introduction: A successful endodontic treatment depends on a comprehensive knowledge of the morphology of canal and its variations, an appropriate access cavity, proper cleaning and shaping and adequate root canal filling. The present study was carried out to evaluate the root canal morphology of permanent maxillary first molars in an Iranian population. Methods and Materials: In this in vitro study, 80 extracted permanent maxillary first molars from a population in Rafsanjan, Iran were collected...
2018: Iranian Endodontic Journal
Maham Muneeb Lone, Farhan Raza Khan, Muneeb Ahmed Lone
OBJECTIVE: To compare apical microleakage of extracted, single-rooted teeth obturated with thermoplasticized injectable gutta-percha using two different endodontic sealers (calcium-hydroxide and resin based). STUDY DESIGN: An experimental study. PLACE AND DURATION OF STUDY: The Aga Khan University Hospital (AKUH), Dental Clinics and Laboratory from June to September 2015. METHODOLOGY: The study was conducted using extracted teeth...
May 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
Petrina Gerogianni, Wen Lien, Despoina Bompolaki, Ronald Verrett, Stephan Haney, Patrick Mattie, Russell Johnson
PURPOSE: This in vitro study evaluated the fracture resistance and clinical prognosis of anterior lithium disilicate crowns (e.max Press and e.max CAD), following endodontic access and repair. The research design simulates intraoral loading conditions to produce clinically applicable results. MATERIALS AND METHODS: Monolithic anterior crowns, based on #8 anatomy, were fabricated from e.max Press ingots and e.max CAD blocks and adhesively bonded on identical dies milled out of a dentin analog material (NEMA G10)...
April 22, 2018: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
A R Vivekananda Pai, Varun Arora
A metallic obstruction in the canal orifice of a maxillary right canine could not be bypassed during endodontic treatment. Aids such as ultrasonics and retrieval kits were not available for the removal of the obstruction. Therefore, a novel approach using a disposable syringe needle was employed. A 22-gauge needle was inserted into the orifice and turned in an arc with a gentle apical pressure and alternate rocking motion around the obstruction. This procedure was repeated few times to cut dentin and successfully dislodge and remove the obstruction using the sharp beveled tip of the needle...
March 2018: Journal of Conservative Dentistry: JCD
Bruna Cechella, Josiane de Almeida, Morgane Kuntze, Wilson Felippe
Background: It is unknown whether the bioactivity of Biodentine characterized by the precipitation of hydroxyapatite and formation of tags into the dentinal tubules improve its sealing ability as an apical plug. Aim: To evaluate the sealing ability provided by Biodentine and mineral trioxide aggregate (MTA) apical plugs, with or without phosphate-buffered saline (PBS) intracanal dressing, using a glucose leakage method. Material and Methods: The space of the canal of 100 root segments with about 12 mm long was shaped using Gates-Glidden...
February 2018: Journal of Clinical and Experimental Dentistry
Richard E Campbell, Heather T Morris, Kyle T Reynolds, Elizabeth S Gosnell
A 13-year-old female presented with traumatized maxillary central incisors that had been endodontically treated. Five years later, at a different dental office, she had the clinical crowns removed, leaving subgingival margins. From the patient's history and our initial assessment, it seemed as if the teeth had been fractured and luxated but not avulsed. Endodontic posts with spot-welded orthodontic brackets were temporarily cemented to enable orthodontic extrusion. Once access to restorable margins was obtained, the temporary posts were removed and conventional fiber posts with interim composite crowns were placed...
January 15, 2018: Journal of Dentistry for Children
Pablo Betancourt, Ricardo Elgueta, Ramon Fuentes
Case Description: The main objective of this paper was to report the clinical effectiveness of leukocyte- platelet- rich fibrin (L-PRF) in the treatment of a combined endo-periodontal lesion of an upper first premolar. Clinical Findings: The tooth had a profound abfraction on the vestibular aspect and presented no mobility but revealed a deep pocket measuring of 11 mm on the mesial vestibular aspect and 14 mm on the mesial palatine aspect. The three dimensional image analysis showed total bone loss in the mesial aspect and an extensively bone loss of the vestibular aspect of the vestibular root...
December 30, 2017: Colombia Médica: CM
Sherin Jose Chockattu, B S Deepak, K Mallikarjun Goud
Context: One of the important goals of root canal therapy is disinfection aided by irrigation and intracanal medicaments. Commonly used nonsteroidal anti-inflammatory agents have shown anti-bacterial activity, thus, when used as intracanal medicaments, nonantibiotic agents have the potential to provide anti-inflammatory, local analgesic, and anti-bacterial activity. Aim: The aim of this study is to evaluate and compare the anti-bacterial efficiency of anti-inflammatory nonantibiotics ibuprofen and diclofenac, and routinely used intracanal dressing calcium hydroxide (Ca[OH]2 ), against Enterococcus faecalis , in an endodontic model...
January 2018: Journal of Conservative Dentistry: JCD
Sulthan Ibrahim Raja Khan, Anupama Ramachandran, Abdulmohsen Alfadley, Jagan Kumar Baskaradoss
OBJECTIVES: This study aims to compare the ex vivo fracture resistance of root canal treated (RCT) teeth restored with four different types of fibers under composite resin. SUBJECTS AND METHODS: One hundred and forty extracted mandibular first molar teeth were assigned to seven groups (n = 20/group). Group 1 was the control group. In groups 2-7, endodontic access and standard Mesio-occluso-distal (MOD) cavities were prepared. Following RCT, group 2 was left unrestored...
June 2018: Journal of the Mechanical Behavior of Biomedical Materials
Parupalli Karunakar, Umrana Faizuddin, Madanala Nagarjun, M S Ranga Reddy
The presence of radix entomolaris (RE) in a mandibular first molar is a common occurrence, which accounts for 0.2%-32% of the population, but the presence of RE in a mandibular second molar is a rare occurrence in our ethnic group. This presence of additional root can lead to difficulties during endodontic treatment. A thorough knowledge of anatomy is necessary for the success of endodontic treatment. This article presents a review on clinical approach and a case series on the detection and management of RE on mandibular second molar...
January 2018: Contemporary Clinical Dentistry
Sônia T de O Lara-Mendes, Camila de Freitas M Barbosa, Caroline C Santa-Rosa, Vinícius C Machado
The aim of this study was to describe a guided endodontic technique that facilitates access to root canals of molars presenting with pulp calcifications. A 61-year-old woman presented to our service with pain in the upper left molar region. The second and third left molars showed signs of apical periodontitis confirmed by the cone-beam computed tomographic (CBCT) scans brought to us by the patient at the initial appointment. Conventional endodontic treatment was discontinued given the difficulty in locating the root canals...
May 2018: Journal of Endodontics
Taha Özyürek, Özlem Ülker, Ebru Özsezer Demiryürek, Fikret Yılmaz
INTRODUCTION: The aim of this study was to compare the fracture strengths of mandibular molar teeth prepared using traditional endodontic cavity (TEC) and conservative endodontic cavity (CEC) methods and restored using SDR (Dentsply Caulk, Milford, DE) and EverX Posterior (GC Dental, Tokyo, Japan) base composite materials. METHODS: A hundred mandibular first molar teeth were randomly divided into 5 groups. In group 1 (the control group), samples were kept intact...
May 2018: Journal of Endodontics
Vivek Aggarwal, Mamta Singla, Sanjay Miglani
Background: The purpose of this prospective randomized single-blind clinical trial was to evaluate the effect of tilting the head on the anesthetic efficacy of inferior alveolar nerve block (IANB) in patients with symptomatic irreversible pulpitis. Methods: Ninety-two patients were divided into two groups: the first group received IANB and the head was tilted in the direction of the block for 15 min, whereas the second group received IANB and the head was tilted to the opposite side...
February 2018: Journal of Dental Anesthesia and Pain Medicine
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