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Mta bleaching

Cangül Keskin, Evren Sariyilmaz, Ali KeleŞ
The present study aimed to evaluate the effect of sodium perborate on the compressive strength of calcium silicate-based materials. ProRoot wMTA, MTA Plus, NeoMTA Plus and Biodentine discs with 5 mm thickness and 4 mm diameter were prepared. Thirty discs from each material were used for compressive strength testing and divided into two groups: control and bleaching (n = 15). The sodium perborate was mixed with 30% hydrogen peroxide in a creamy consistency and placed on the surface of the specimens. Specimens were tested in an Instron machine, and compressive strength values were recorded and compared...
October 18, 2018: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
Aovana Timmerman, Peter Parashos
INTRODUCTION: This report presents the retrieval of remnants from a discolored mandibular right second premolar (tooth #29) of a 17-year-old female after a successful regenerative endodontic procedure (REP). METHODS: The REP was performed in October 2011. Coronal discoloration became of great concern to the patient at a review visit in 2016. A cone-beam computed tomographic scan was taken to investigate the formation of hard tissues within the root canal as well as a region of no calcified tissue formation...
January 2018: Journal of Endodontics
Negar Moghadam, Amir Ardalan Abdollahi, Hoda Aghabalayi Fakhim, Zahra Borna
INTRODUCTION: This study aimed at evaluating the sealing properties of calcium-enriched mixture (CEM) compared to mineral trioxide aggregate (MTA) as a cervical barriers in intra-coronal bleaching. METHODS AND MATERIALS: In this in vitro study, endodontic treatment was performed on 60 extracted human incisors and canines without canal calcification, caries, restorations, resorption or cracks. The teeth were then randomly divided into two experimental groups and two control groups (n=15)...
2017: Iranian Endodontic Journal
Luciane Geanini Pena Dos Santos, Wilson Tadeu Felippe, Beatriz Dulcineia Mendes de Souza, Andrea Cristina Konrath, Mabel Mariela Rodríguez Cordeiro, Mara Cristina Santos Felippe
Objectives: To assess tooth crown's color after intracanal treatment with triple antibiotic paste (TAP) or calcium hydroxide (CH); cervical sealing with glass ionomer cement (GIC) or mineral trioxide aggregate (MTA); and bleaching with carbamide peroxide. Material and Methods: After pulp removal and color spectrophotometer measurement, 50 bovine incisors were divided into 4 experimental groups and one control (untreated). Experiments were performed in phases (Ph)...
March 2017: Journal of Applied Oral Science: Revista FOB
Nooh Kazia, Nithin Suvarna, Harish Kumar Shetty, Pradeep Kumar
AIM: To investigate the effect of bleaching agents having a neutral pH on the surface of mineral trioxide aggregate (MTA) used as a coronal seal material for nonvital bleaching, beneath the bleaching agent, with the help of energy dispersive X-ray microanalysis and scanning electron microscopy (SEM). MATERIALS AND METHODS: Six samples of plastic tubes filled with white MTA (Angelus white) were kept in 100% humidity for 21 days. Each sample was divided into 2 and made into 12 samples...
September 2016: Journal of Conservative Dentistry: JCD
Mügem Aslı Gürel, Bağdagül Helvacioğlu Kivanç, Adil Ekici, Tayfun Alaçam
The aim of this study was to evaluate tooth discoloration after the use of root canal sealers and the effect of internal bleaching on sealer discoloration. The crowns of 56 incisors were cut and randomly filled with four sealers (n = 14): Pulpispad, AH26, MTA Fillapex, EndoREZ. The colour measurement was taken with a spectrophotometer prior and after placement of sealers. Colour changes (ΔE) were recorded after 4 weeks then sealers were removed and an internal bleaching treatment was performed. After bleaching treatment colour changes (ΔE) were measured...
December 2016: Australian Endodontic Journal: the Journal of the Australian Society of Endodontology Inc
Nafiseh Zarenejad, Saeed Asgary, Nahid Ramazani, Mohammad Reza Haghshenas, Alireza Rafiei, Mohsen Ramazani
BACKGROUND: This study was designed to assess the microleakage of glass-ionomer (GI), mineral trioxide aggregate (MTA), and calcium-enriched mixture (CEM) cement as coronal orifice barrier during walking bleaching. MATERIALS AND METHODS: In this experimental study, endodontic treatment was done for 70 extracted human incisors without canal calcification, caries, restoration, resorption, or cracks. The teeth were then divided into three experimental using "Simple randomization allocation" (n = 20) and two control groups (n = 5)...
November 2015: Dental Research Journal
Lucia K Zaugg, Patrik Lenherr, Judith B Zaugg, Roland Weiger, Gabriel Krastl
OBJECTIVES: The aim of this study is to investigate the influence of changing the sodium perborate-tetrahydrate (PBS-4) at a 4-day interval versus no change after 16 days of internal bleaching. MATERIALS AND METHODS: Two hundred and ten bovine enamel-dentin discs were discolored for 3.5 years with 14 different endodontic materials. All groups with a discoloring index of ∆E (mean) ≥ 5.5 were included in the present investigation: ApexCal (APCA), MTA white + blood (WMTA+BL), Portland cement + blood (PC+BL), blood (BL), MTA gray (GMTA), MTA gray + blood (GMTA+BL), Ledermix (LED), and triple antibiotic paste containing minocycline (3Mix)...
April 2016: Clinical Oral Investigations
Ji-Hyun Jang, Minji Kang, Soyeon Ahn, Soyeon Kim, Wooksung Kim, Yaelim Kim, Euiseong Kim
INTRODUCTION: The aim of this study was to evaluate tooth discoloration after the use of mineral trioxide aggregate (MTA) and to examine the effect of internal bleaching on discoloration associated with MTA. METHODS: Thirty-two teeth were endodontically treated. Three-millimeter plugs of MTA, ProRoot, Angelus, or Endocem were placed on the access cavities of 24 teeth. Eight teeth served as the control group. After 24 hours, the access cavities were restored, and the tooth color was recorded at baseline and at 1, 2, 4, 8, and 12 weeks...
December 2013: Journal of Endodontics
Elizabeth K Miller, Jessica Y Lee, Peter Z Tawil, Fabricio B Teixeira, William F Vann
Early loss of immature permanent teeth due to pulpal necrosis secondary to trauma can have dire consequences for a child's growth and development. The treatment alternatives include surgical endodontics, traditional calcium hydroxide apexification, and mineral trioxide aggregate (MTA) apexification. These options pose potential complications, including: arrest of root development; weakened dentinal walls; and increased potential for fracture. Revascularization of the dentin-pulp complex is a new approach that involves disinfecting the root canal system followed by tissue repair and regeneration while allowing for continued root development and thickening of the lateral dentinal walls through deposition of new hard tissue...
January 2012: Pediatric Dentistry
Ebru Canoglu, Kamran Gulsahi, Cem Sahin, Emre Altundasar, Zafer C Cehreli
OBJECTIVE: To evaluate the effect of intracoronal bleaching agents on the sealing properties of different intraorifice barriers and root filling materials. STUDY DESIGN: The root canals of extracted human premolars (n=180) were prepared by using System GT rotary files and filled with either gutta-percha+AH Plus or Resilon+Epiphany sealer. In both groups, the coronal 3mm of root filling was removed and replaced with one of the following materials applied as intraorifice barriers (n=30/group): 1...
July 2012: Medicina Oral, Patología Oral y Cirugía Bucal
Sepideh Vosoughhosseini, Mehrdad Lotfi, Kaveh Shahmoradi, Mohammad-Ali Saghiri, Vahid Zand, Masoumeh Mehdipour, Bahram Ranjkesh, Hadi Mokhtari, Amin Salemmilani, Sirvan Doosti
OBJECTIVES: There is some evidence that the pH at the root surface is reduced by intracoronal placement of bleaching pastes, which is known to enhance osteoclastic activity. Therefore, it is recommended that a protective barrier be used over the canal filling to prevent leakage of bleaching agents. Glass-ionomer (GI) is commonly used as a coronal barrier before nonvital bleaching. Because mineral trioxide aggregate (MTA) creates high alkalinity after mixing with water, using MTA as a protective barrier over the canal filling may not only prevent leakage of bleaching agents and microorganisms, but may prevent cervical resorption...
November 2011: Medicina Oral, Patología Oral y Cirugía Bucal
Ilya Belobrov, Peter Parashos
INTRODUCTION: A number of vital pulp therapy techniques have been recommended to preserve pulp vitality in teeth with complicated crown fractures, especially in young patients. Calcium hydroxide has been the gold standard as a pulp capping material, but recently mineral trioxide aggregate (MTA) has been recommended. This case report describes the treatment of tooth discoloration caused by white MTA (WMTA) used for the management of a complicated crown fracture. METHODS: A partial pulpotomy was performed with the use of WMTA after a complicated crown fracture of the upper right central incisor...
July 2011: Journal of Endodontics
Masaki Tsujimoto, Atsushi Ookubo, Yoko Wada, Tsunenori Matsunaga, Yasuhisa Tsujimoto, Yoshihiko Hayashi
INTRODUCTION: The aim of this study was to investigate the changes in the surface structure and chemical composition after applying bleaching agents to completely hardened mineral trioxide aggregate. METHODS: A total of 12 samples of MTA blocks were divided into three groups, two different bleaching agents, and a control group. The surface structure was observed using a scanning electron microscope. The changes in elemental composition were analyzed by an energy-dispersive x-ray microanalysis (EDX) system...
February 2011: Journal of Endodontics
Manoel Brito-Júnior, André L Faria-e-Silva, Bráulio Fonseca, Carla C Camilo
The aim of this study was to compare the sealing ability of white mineral trioxide aggregate (MTA) with that of other materials used as a cervical barrier during intracoronal bleaching. Thirty eight extracted teeth were endodontically treated and 3 mm of filling was removed to receive the barrier material: G1-Coltosol; G2 - Vidrion R; G3 - White MTA; G4-No barrier (negative control) and G5- Roots totally protected with three layers of cyanoacrylate (positive control). The 30% hydrogen peroxide associated with the sodium perborate was left in the pulp chamber for 24 h...
2009: Acta Odontológica Latinoamericana: AOL
R Pace, V Giuliani, G Pagavino
AIM: To describe the management of external invasive resorption using mineral trioxide aggregate (MTA). SUMMARY: External invasive root resorption may occur as a consequence of trauma, orthodontic treatment, intracoronal bleaching and surgical procedures, and may lead to the progressive and destructive loss of tooth structure. Depending on the extent of the resorptive process, different treatment regimens have been proposed. A 19-year-old male patient presented with tooth 11 (FDI) showing signs and symptoms of irreversible pulpitis, external invasive resorption and periodontal pocket on the disto-palatal...
March 2008: International Endodontic Journal
Evan A Lynn, Stanley Einbender
The case presented here demonstrates an alternative to conventional treatments in managing a non-vital blunderbuss canal. The use of MTA (mineral trioxide aggregate) to establish an apical stop allows for expedient completion of root canal therapy with predictable results. Following root canal therapy, non-vital bleaching techniques may be employed, offering a means of restoring the tooth to its natural shade without the need for additional tooth preparation. Surgery is avoided, and the technique can easily be followed by the general practitioner...
February 2003: New York State Dental Journal
Emine C Loxley, Frederick R Liewehr, T B Buxton, J C McPherson
OBJECTIVE: The purpose of this study was to determine the effect of intracanal oxidizing agents on the strength of materials used to repair root perforations. STUDY DESIGN: Standardized perforations in bovine root samples were repaired with mineral trioxide aggregate (MTA), Super-EBA cement (S-EBA), or intermediate restorative material (IRM). After 7 days, 10 samples from each group were tested for push-out strength with an Instron machine (controls). The remaining samples were immersed in NaOCl, sodium perborate mixed with saline (SPB+S), Superoxol (SO), sodium perborate mixed with Superoxol (SPB+SO), or saline for 7 days to investigate the effect of irrigating and walking bleach compounds on the perforation repair materials...
April 2003: Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontics
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