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Root canal retreatment

H Aksel, S Küçükkaya Eren, S Askerbeyli Örs, A Serper, M Ocak, H H Çelik
AIM: To compare the removal of root fillings using the ProTaper Universal Retreatment system (PTUR) followed by a supplementary preparation with the XP-Endo Finisher file. METHODOLOGY: The mesiobuccal root canals of 30 mandibular first molars were instrumented with ProTaper Universal NiTi files up to F2 and filled with one of the following sealers using a single-cone technique (n=10); AH Plus, NeoMTA Plus and Endosequence BC. The root fillings were removed using the PTUR system with additional apical preparation using ProTaper F2 and F3 files...
February 4, 2019: International Endodontic Journal
Erika Laukkanen, Miira M Vehkalahti, Anja K Kotiranta
OBJECTIVES: We assessed the impact of type of tooth on the outcome of root canal treatment (RCT) according to factors potentially weakening the prognosis such as preoperative apical periodontitis (AP) and treatment modality (primary or secondary RCT). MATERIALS AND METHODS: We scrutinized patient documents including pre- and postoperative radiographs of 640 permanent teeth receiving non-surgical RCT at Helsinki University Clinic in 2008-2011. Of teeth, 44% were molars, 32% premolars, and 24% anterior teeth...
February 2, 2019: Clinical Oral Investigations
G De-Deus, F G Belladonna, A S Zuolo, D M Cavalcante, J C A Carvalhal, M S Carvalho, E M Souza, R T Lopes, E J N L Silva
AIM: To evaluate the performance of XP-endo Finisher R instruments when removing root filling remnants from oval-shaped canals using micro-computed tomographic (micro-CT) imaging as the analytical tool. Passive ultrasonic irrigation (PUI) was used as a reference technique for comparison. METHODOLOGY: Twenty mandibular incisors with oval-shaped canals were matched based on similar anatomic features of the canal (volume, aspect ratio and 3D configuration) after scanning procedures...
January 21, 2019: International Endodontic Journal
Flora Kakoura, Ourania Pantelidou
Aim: This study aimed to evaluate the residual filling material and the reestablishment of working length (WL) and apical patency after retreatment of BioRoot™ RCS, versus TotalFill® BC Sealer, and AH26, used in a single cone obturation technique. Materials and Methods: Sixty single-rooted permanent canines were instrumented up to size 40/.04 (Sendoline, Täby, Sweden). The samples were filled with GP/AH26 (Group 1), GP/TotalFill BC Sealer (Group 2), and GP/BioRoot RCS (Group 3)...
November 2018: Journal of Conservative Dentistry: JCD
Saeed Asgary, Bita Talebzadeh
When non-surgical and surgical endodontic retreatments are impractical, intentional replantation (IR) might be employed as an accepted endodontic treatment procedure. This report describes an IR and root amputation of a tooth with several endodontic complications. A 28-year-old woman was referred for management of tooth #37. The tooth had a history of root canal therapy by a general dentist. Clinically the tooth was sensitive to palpation/percussion. Radiographic evaluation showed concurrent root/furcal perforations associated with radiolucent lesions, an inadequate root canal treatment and massive gutta-percha overextensions via perforation sites...
December 7, 2018: Journal of Stomatology, Oral and Maxillofacial Surgery
A F Campello, B M Almeida, M A Franzoni, F R F Alves, M F Marceliano-Alves, I N Rôças, J F Siqueira, J C Provenzano
AIM: To evaluate the effectiveness of a solvent (eucalyptol) in improving filling material removal from canals connected by isthmuses, and the additional cleaning effect of a finishing instrument. METHODOLOGY: The mesial canals from 32 mandibular molars (Vertucci's type II morphology) were instrumented and filled with the single-cone technique using Reciproc R25 gutta-percha points (VDW, Munich, Germany) combined with Sealer 26 (Dentsply, Petrópolis, RJ, Brazil)...
November 27, 2018: International Endodontic Journal
A G Machado, B P S Guilherme, J C Provenzano, M F Marceliano-Alves, L S Gonçalves, J F Siqueira, M A S Neves
AIM: To compare the effects of three instrumentation systems, and a supplementary approach with a finishing instrument, on filling material removal during retreatment of mandibular molar canals. METHODS: Sixty mesial canals from mandibular molars (Vertucci's type IV anatomy) were instrumented, filled and subjected to retreatment. After initial removal of the root canal filling material using the D-RaCe system, the canals were randomly distributed into 3 groups (n=20) according to the instrument system used for preparation: the Self-Adjusting File (SAF), TRUShape or XP-endo Shaper...
November 12, 2018: International Endodontic Journal
José Freitas Siqueira Junior, Isabela das Neves Rôças, Marília Fagury Marceliano-Alves, Alejandro Ron Pérez, Domenico Ricucci
Chemomechanical preparation is intended to clean, disinfect, and shape the root canal. This step is of utmost importance during treatment of infected teeth with apical periodontitis, because treatment outcome depends on how effectively the clinician eliminates bacteria, their products, and necrotic tissue that would serve as substrate for bacterial regrowth. Nonetheless, curvatures and complex internal anatomical variations of the root canal system can pose a high degree of difficulty in reaching these goals...
October 18, 2018: Brazilian Oral Research
Tarek-Fahed Alakabani, Vicente Faus-Llácer, Vicente Faus-Matoses
Background: When endodontic treatment fails, retreatment consists of the complete removal of the root canal filling material for thorough cleaning and reobturation. Various techniques are available for the filling removal procedure, which present varying degrees of efficacy, and take a varying length of time to perform. The aim of this study was to compare the time required to carry out reciprocating, rotary, and manual techniques with dental microscope and ultrasonic activation for removing filling material from root canals...
August 2018: Journal of Clinical and Experimental Dentistry
Apoorva Jain, Vineeta Nikhil, Parul Bansal
Introduction: This study evaluated the effect of root canal preparation, obturation, and different techniques of retreatment on the percentage increase in the number of dentinal microcracks using microcomputed tomography (CT) analysis. Materials and Methods: Forty-five mandibular premolars after micro-CT scanning were prepared using Protaper universal files up to F4 and obturated. After the second micro-CT scanning again, the samples were randomly divided into three groups ( n = 15) for retreatment procedure...
September 2018: Journal of Conservative Dentistry: JCD
Adham A Azim, Howard H Wang, Mohamed Tarrosh, Katharina A Azim, Lucila Piasecki
INTRODUCTION: The aim of this study was to evaluate in vitro the performance of 3 single-file systems: WaveOne Gold Primary (WOG; Dentsply Sirona, Ballaigues, Switzerland), Hyflex EDM "one file" (EDM; Coltene/Whaledent, Alstatten, Switzerland), and XP Shaper (XP; FKG, La Chaux de Fonds, Switzerland), for nonsurgical endodontic retreatment on mandibular anterior teeth in regard to the amount of remaining filling material inside the canal, debris extrusion, and operation time...
September 19, 2018: Journal of Endodontics
Roberta Fonseca de Castro, Juliana do Socorro Soares Melo, Luiz Carlos de Lima Dias, Emmanuel João Nogueira Leal Silva, Juliana Melo da Silva Brandão
This study analyzed the influence of different retreatment protocols on amount of remaining filling material and amount of new sealer after endodontic retreatment. Forty mandibular molars with curved mesial roots were prepared with ProTaper Universal system, and filled with AH Plus sealer mixed with 0.1% rhodamine B and gutta-percha. After 7 days, the specimens were randomized according to the retreatment protocol (n = 10): ProTaper Retreatment System (PTR); PTR+Orange Oil (PTR+OO); PTR+Passive Ultrasonic Irrigation (PTR+PUI)...
2018: Brazilian Oral Research
Peter Z Tawil, Elisa K Arnarsdottir, Ceib Phillips, Sigurdur R Saemundsson
INTRODUCTION: This microsurgical clinical study evaluated if teeth that have undergone endodontic retreatment are associated with more dentinal defects than primary root canal-treated teeth. METHODS: One hundred fifty-five patients who underwent periapical microsurgery treatment in a private practice setting were evaluated. The root ends were resected, and the roots were inspected for the presence of dentinal defects through the surgical operating microscope with the help of a 0...
October 2018: Journal of Endodontics
Emad AlShwaimi
Aim: This study compared the efficacy of ProFile Vortex (PV) with that of ProTaper Next (PTN) for the removal of root canal filling material. Materials and methods: Twenty-six mesial canals of extracted mandibular first molars were instrumented, obturated with gutta-percha and sealant, and randomly allocated to a PTN (X3, X2, or X1) or PV group. The percentage of remaining material, amount of dentin removed, and extent of transportation were assessed using micro-computed tomography...
January 2018: Saudi Dental Journal
Amit Patil, Sheetal Mali, Deepak Hegde, Himmat Jaiswal, Hrishikesh Saoji, Dhairaysheel N Edake
AIM: One of the common dental procedures employed these days in patients with irreversible pulpitis is root canal therapy. In retreatment cases, it is necessary for complete removal of obturate gutta-percha (GP) from obturate root canal system. Various methods and techniques are available these days for this purpose. This study was aimed to assess the efficacy of D-RaCe files, ProTaper retreatment files, Mtwo retreatment files, and manual Hedstrom files (H-files) in removing filling materials from the root canals of the endodontically treated teeth...
August 1, 2018: Journal of Contemporary Dental Practice
Mohammed Mustafa, Wafa Hassan Alaajam, Ahmed Abdul Azeim, Najla Aedh Alfayi, Rahaif Misfer Alqobty, Shahad Alghannam
Objective: Studies about the dispersion of hydroxyl ions through dentin of endodontically retreated teeth are scarce. The present study aims at examining the diffusion of calcium hydroxide in vitro by recording the pH changes of retreated root canal using two types of calcium hydroxide preparations. Materials and Methods: A total of 45 recently extracted single-rooted mandibular first premolars were collected and cleaned from calculus and remains of periodontal tissue...
July 2018: European Journal of Dentistry
Kainath Fatima, Rohit Nair, Sandhya Khasnis, Saritha Vallabhaneni, Jayaprakash D Patil
Introduction: The aim of this study is to compare the effectiveness of reciprocating and continuous rotary nickel-titanium instruments during retreatment performed through two different access outlines. Methodology: A total of 48 freshly extracted mandibular first and second premolars with single root and canal were selected. Initial root canal treatment was completed through a contracted endodontic cavity (CEC) design. Canals were instrumented with F2 ProTaper instrument, obturated with warm lateral condensation of gutta-percha with AH Plus sealer, and allowed to set for 30 days at 37°C and 100% humidity...
July 2018: Journal of Conservative Dentistry: JCD
E Wigsten, P Jonasson, T Kvist
AIM: To study patient- and tooth-specific characteristics of teeth indicated for root canal treatment, in the public dental service of the county of Västra Götaland, Sweden. METHODOLOGY: During a designated 8-week period, general dental practitioners working at 20 different public dental clinics consecutively registered indications for undertaking root canal treatment. The patients' subjective level of pain was also registered (visual analogue scale) at the very first appointment...
August 14, 2018: International Endodontic Journal
G De-Deus, F G Belladonna, A S Zuolo, M Simões-Carvalho, C B Santos, D S Oliveira, D M Cavalcante, E J N L Silva
AIM: To compare the efficiency of M-Wire Reciproc and Reciproc Blue instruments in the removal of root filling material and in their ability to regain apical patency through micro-computed tomographic (micro-CT) analysis. METHODOLOGY: Ten anatomically matched pairs of teeth, with a single oval-shaped straight canal, were selected and scanned in a micro-CT device. The root canals were prepared with M-Wire Reciproc R25 instruments and filled with gutta-percha and AH Plus sealer...
August 9, 2018: International Endodontic Journal
Saeed Asgary, Leyla Roghanizadeh
As the dental pulp could not be directly inspected before endodontic treatment, indirect evaluation of the pulp status via (para)/clinical tests should be performed which need careful inspection. This report presents a root-treated right maxillary first molar with recurrent abscess formation and a radiolucent periradicular lesion surrounding the distobuccal root of the right maxillary second molar. The patient underwent surgical retreatment, employing CEM root-end filling, which resulted in no relief from sign/symptoms...
2018: Iranian Endodontic Journal
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