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Mineral trioxide aggregate

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https://www.readbyqxmd.com/read/28722005/a-conservative-management-of-iatrogenically-damaged-distal-root-of-the-mandibular-second-molar
#1
Rashmi Bansal, Sonali Roy, Praveen Chandra, Anuraag Gurtu, Rahul Pandey
Trauma to the adjacent hard and soft tissue is the most common iatrogenic injury during extraction of the mandibular third molar. As every functional component of the dental arch is of prime importance in contemporary dental practice, the major concern must be in conserving the tooth and its structure as much as possible. The present case discusses the application of this conservative approach for management of iatrogenically damaged distal root of the mandibular second molar during extraction of impacted third molar, in which excessive guttering of alveolar bone and fractured apical third of distal root of 37 was observed radiographically...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28722003/severe-unintentional-extrusion-of-mineral-trioxide-aggregate-during-apexification
#2
Levent Demiriz, Ebru Hazar Bodrumlu
The aim of this report was to present the long-term clinical and radiographic outcomes of a case including severe unintentional extrusion of mineral trioxide aggregate (MTA). An 11-year-old boy was referred with a previously traumatized permanent central incisor which was temporarily treated by using calcium hydroxide root canal filling material. Since having an open apex and a large periapical lesion, root canal treatment with MTA apexification was planned. During the apexification process, a huge amount of MTA was unintentionally extruded into periapical tissues...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28712637/treatment-options-for-failing-regenerative-endodontic-procedures-report-of-3-cases
#3
Antonis Chaniotis
INTRODUCTION: Regenerative treatments in necrotic immature teeth are suggested as alternatives to conventional multiple or single-step apexification procedures. Although case reports and case series provide promising results, the treatment protocol is not yet fully established and regenerative procedure might fail. Once failure is encountered, the apexification treatment options still remain. METHODS: Repetition of the regenerative procedure after initial revitalization failure has not been suggested yet...
July 13, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28691752/mineral-trioxide-aggregate-improves-healing-response-of-periodontal-tissue-to-injury-in-mice
#4
I Vidovic Zdrilic, I O de Azevedo Queiroz, B G Matthews, J E Gomes-Filho, M Mina, I Kalajzic
BACKGROUND AND OBJECTIVE: Mineral trioxide aggregate (MTA) is a biomaterial used in endodontic procedures as it exerts beneficial effects on regenerative processes. In this study, we evaluate the effect of MTA on healing of periodontal ligament (PDL) and surrounding tissue, following injury, in a transgenic mouse model and on the differentiation of murine mesenchymal progenitor cells in vitro. MATERIAL AND METHODS: We used an inducible Cre-loxP in vivo fate mapping approach to examine the effects of MTA on the contributions of descendants of cells expressing the αSMA-CreERT2 transgene (SMA9(+) ) to the PDL and alveolar bone after experimental injury to the root furcation on the maxillary first molars...
July 10, 2017: Journal of Periodontal Research
https://www.readbyqxmd.com/read/28688183/evaluation-of-ph-and-calcium-ion-diffusion-from-calcium-hydroxide-pastes-and-mta
#5
María Del M Sáez, Gabriela L López, Diana Atlas, María L de la Casa
The aim of this ex vivo study was to evaluate changes in pH and calcium ion diffusion through root dentin from calcium hydroxide (Ca (OH) 2) and mineral trioxide aggregate (MTA) pastes at 7, 30 and 60 days; and the relationship between pH and ion diffusion. Thirty-two human premolars were used. Crowns were sectioned and root canals instrumented and filled in with the following preparations: 1) Ca(OH) 2 + distilled water (n=7); 2) Ca(OH) 2 + 0.1% chlorhexidine gluconate (n=7); 3) MTA + distilled water (n=7); 4) MTA + 0...
April 2017: Acta Odontológica Latinoamericana: AOL
https://www.readbyqxmd.com/read/28673494/partial-pulpotomy-in-mature-permanent-teeth-with-clinical-signs-indicative-of-irreversible-pulpitis-a-randomized-clinical-trial
#6
Nessrin A Taha, Mohammad A Khazali
INTRODUCTION: This study aimed to assess the outcome of partial pulpotomy using mineral trioxide aggregate (MTA) compared with calcium hydroxide (CH) in mature cariously exposed permanent molars. METHODS: Fifty permanent molar teeth with carious exposures in 50 patients >20 years old were included. Preoperative pulpal and periapical diagnosis was established based on a history of presenting pain, results of cold testing, and radiographic findings. After informed consent, the tooth was anesthetized, isolated via a dental dam, and disinfected with 5% sodium hypochlorite before caries excavation...
June 30, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28667754/mta-induced-notch-activation-enhances-the-proliferation-of-human-dental-pulp-cells-by-inhibiting-autophagic-flux
#7
W Qiu, B Sun, F He, Y Zhang
AIM: To determine the roles of autophagy and Notch signalling in mineral trioxide aggregate (MTA)-mediated proliferation and differentiation of human dental pulp cells (hDPCs). METHODOLOGY: hDPCs were separated from human healthy molar teeth using collagenase I/dispase II digestion, and then cultured in α-MEM medium with 15% foetal bovine serum. hDPCs were seeded in 96-well plates, and cell counting kit assays were carried out to test their viability. Real-time quantitative polymerase chain reaction (qPCR) was used to evaluate ALP, Runx2, Notch1, Hes1, and Hey1 mRNA levels...
July 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28642923/the-influence-of-particle-size-and-curing-conditions-on-testing-mineral-trioxide-aggregate-cement
#8
William Nguyen Ha, Bill Kahler, Laurence James Walsh
Objectives: To assess the effects on curing conditions (dry versus submerged curing) and particle size on the compressive strength (CS) and flexural strength (FS) of set MTA cement. Materials and methods: Two different Portland cements were created, P1 and P2, with P1 < P2 in particle size. These were then used to create two experimental MTA products, M1 and M2, with M1 < M2 in particle size. Particle size analysis was performed according to ISO 13320. The particle size at the 90th percentile (i.e. the larger particles) was P1: 15...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642908/methodologies-for-measuring-the-setting-times-of-mineral-trioxide-aggregate-and-portland-cement-products-used-in-dentistry
#9
William Nguyen Ha, Timothy Nicholson, Bill Kahler, Laurence James Walsh
Objective The current standard used to measure setting time for Mineral Trioxide Aggregate (MTA) involves indentation testing with arbitrary weights. This study compared indentation testing against rheological measurements and assessed the influences of particle size and the inclusion of bismuth oxide on the setting time of experimental MTA and Portland cement (PC). Material and methods Two PCs (P1 and P2) of different particle sizes were produced using the same clinker. From these two PCs, two experimental MTAs (M1 and M2) were created with the addition of bismuth oxide...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28638556/effects-of-different-powder-to-liquid-ratios-on-the-push-out-bond-strength-of-cem-cement-on-simulated-perforations-in-the-furcal-area
#10
Mohammad-Frough Reyhani, Negin Ghasemi, Vahid Zand, Saba Mosavizadeh
BACKGROUND: Proper bond strength to dentin is one of the properties of biomaterials used for therapeutic purposes such as repair of furcal perforations. The aim of the present study to evaluate the effects of different powder to liquid ratios of Calcium-enriched mixture (CEM) on the push-out bond strengths in simulated perforations in the furcal area and compare it with Mineral trioxide aggregate (MTA). MATERIAL AND METHODS: Furcal perforations, measuring 1.3 mm in diameter and 2 mm in height, were prepared in 120 mandibular first molars...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28621272/radiopacity-of-mineral-trioxide-aggregate-with-and-without-inclusion-of-silver-nanoparticles
#11
Mariana Ss Mendes, Leonardo D Resende, Cláudia A Pinto, Denise P Raldi, Flavia Gr Cardoso, Sandra M Habitante
AIM: The aim of this study was to investigate the inclusion of silver nanoparticles (Ag NPs) in the mineral trioxide aggregate (MTA) composition to know which changes will result in the radiopacity of the material. MATERIALS AND METHODS: The experiment was performed according to the American National Standard Institute/American Dental Association specification no. 57/2000 and ISO 6876/2001. Five plates with five holes measuring 1 mm in depth and 5 mm in internal diameter were filled according to the different experimental groups as follows: white mineral trioxide aggregate (WMTA) + NP50 - W MTA with liquid Ag NP 50 ppm, WMTA + NP30 - W MTA with liquid Ag NP 30 ppm, WMTA + NP22 - W MTA with liquid Ag NP 22 ppm, WMTA + NPP - white MTA with liquid Ag NP and powder 1%, WMTA (control)...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28581920/randomized-clinical-trial-to-evaluate-mta-indirect-pulp-capping-in-deep-caries-lesions-after-24-months
#12
U Koc Vural, A Kiremitci, S Gokalp
OBJECTIVE: This clinical study aimed to assess the efficacies of mineral trioxide aggregate (MTA) and calcium hydroxide [Ca(OH)2] in the treatment of deep carious lesions by the direct complete caries removal technique. METHODS AND MATERIALS: A total of 100 permanent molar/premolar teeth were capped with either Ca(OH)2 (n=49) or MTA (n=51) and restored with composite resin in 73 patients. Periapical radiographs were acquired prior to the treatment as well as at six, 12, and 24 months posttreatment...
June 5, 2017: Operative Dentistry
https://www.readbyqxmd.com/read/28578893/long-term-success-of-nonvital-immature-permanent-incisors-treated-with-a-mineral-trioxide-aggregate-plug-and-adhesive-restorations-a-case-series-from-a-private-endodontic-practice
#13
Marga H Ree, Richard S Schwartz
This case series evaluated the long-term clinical outcome of nonvital immature teeth treated with mineral trioxide aggregate (MTA) as an apical barrier and an adhesive restoration with or without a fiber post. Eighty-three teeth in 72 patients were treated by the first author with an apical MTA plug and an adhesive restoration of composite resin and in 45 of the 83 teeth 1 or more fiber posts. All of the patients had been referred to the first author's private endodontic practice with at least 1 immature tooth with signs of pulpal necrosis and subsequent apical periodontitis that had been caused by a variety of traumatic dental injuries...
June 1, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28577961/histologic-evaluation-of-regenerative-endodontic-procedures-with-the-use-of-chitosan-scaffolds-in-immature-dog-teeth-with-apical-periodontitis
#14
Paulo J Palma, João C Ramos, João B Martins, Anibal Diogenes, Maria H Figueiredo, Paula Ferreira, Carlos Viegas, João M Santos
INTRODUCTION: The aim of this study was to evaluate histologically the newly formed tissues after regenerative endodontic procedures (REPs) in dogs using either a blood clot (BC) or 2 different formulations of a chitosan hydrogel as scaffolds. METHODS: Apical periodontitis was induced by inoculating immature teeth with oral plaque in 4 beagle dogs. Teeth (n = 96) were divided into 2 control (n = 20) and 4 test groups (n = 76) according to the treatment: apexification and REPs with BC, sodium hyaluronate:chitosan (HA:CS) scaffolds, or pectin:chitosan (P:CS) scaffolds...
May 31, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/28571484/sclerostin-deficiency-promotes-reparative-dentinogenesis
#15
A-M Collignon, N Amri, J Lesieur, J Sadoine, S Ribes, S Menashi, S Simon, A Berdal, G Y Rochefort, C Chaussain, C Gaucher
In humans, the SOST gene encodes sclerostin, an inhibitor of bone growth and remodeling, which also negatively regulates the bone repair process. Sclerostin has also been implicated in tooth formation, but its potential role in pulp healing remains unknown. The aim of this study was to explore the role of sclerostin in reparative dentinogenesis using Sost knockout mice ( Sost(-/-)). The pulps of the first maxillary molars were mechanically exposed in 3-mo-old Sost(-/-) and wild-type (WT) mice ( n = 14 mice per group), capped with mineral trioxide aggregate cement, and the cavities were filled with a bonded composite resin...
March 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28571272/effect-of-oral-tissue-fluids-on-compressive-strength-of-mta-and-biodentine-an-in-vitro-study
#16
Divya Subramanyam, Madhusudhan Vasantharajan
INTRODUCTION: Over the past many years various root end filling materials have been used which have been tested for their physical properties but each of them had certain limitations. In clinical practice, root end filling materials are exposed to oral tissue fluids which may compromise their longevity. AIM: The aim of this study was to investigate the effects of oral tissue fluids on compressive strength of Mineral Trioxide Aggregate (MTA) and biodentine. MATERIALS AND METHODS: MTA and biodentine cylinders measuring 6 mm × 4 mm were prepared using acrylic blocks...
April 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28566863/in-vivo-comparative-evaluation-of-mineral-trioxide-aggregate-and-formocresol-pulpotomy-in-primary-molars-a-60-month-follow-up-study
#17
Shivayogi M Hugar, Ravindranath Reddy, Shobha D Deshpande, Anand Shigli, Niraj S Gokhale, Shweta S Hugar
INTRODUCTION: Pulpotomy is a regular procedure in the management of inflamed primary teeth. Diverse materials have been reviewed for the pulpotomy, some of them being formocresol, glutaraldehyde, ferric sulfate, and mineral trioxide aggregate (MTA). AIMS: The aim was to evaluate and compare clinically and radiographically the effects of MTA as a pulp dressing after coronal pulp amputation (pulpotomy) in primary molars. SETTINGS AND DESIGN: Sixty primary molars of thirty healthy children using split mouth design aged between 4 and 6 years were treated by pulpotomy technique...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28566860/comparative-evaluation-of-fresh-aloe-barbadensis-plant-extract-and-mineral-trioxide-aggregate-as-pulpotomy-agents-in-primary-molars-a-12-month-follow-up-study
#18
Mehak Kalra, Nishita Garg, Mandeep Rallan, Lumbini Pathivada, Ramakrishna Yeluri
BACKGROUND: The purpose of this study was to compare the clinical and radiographic outcomes of fresh Aloe vera barbadensis plant extract and mineral trioxide aggregate (MTA) as pulpotomy agents in primary molar teeth. MATERIALS AND METHODS: Pulpotomy procedure was performed in sixty primary molar teeth which were randomly allocated to two groups, i.e., Aloe vera pulpotomy (Group A) and MTA pulpotomy (Group B). All the pulpotomized teeth were evaluated clinically and radiographically at 1, 3, 6, 9, and 12 months of time interval using predetermined criteria...
January 2017: Contemporary Clinical Dentistry
https://www.readbyqxmd.com/read/28528141/portland-cement-induces-human-periodontal-ligament-cells-to-differentiate-by-upregulating-mir-146a
#19
Min-Ching Wang, Li-Yin Yeh, Wen-Yu Shih, Wan-Chun Li, Kuo-Wei Chang, Shu-Chun Lin
BACKGROUND/PURPOSE: Bioaggregates such as Portland cement (PC) can be an economical alternative for mineral trioxide aggregate (MTA) with additional benefit of less discoloration. MTA has been known to induce differentiations of several dental cells. MicroRNAs are important regulators of biological processes, including differentiation, physiologic homeostasis, and disease progression. This study is to explore how PC enhances the differentiation of periodontal ligament (PDL) cells in microRNAs level...
May 18, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28527851/intentional-replantation-of-an-avulsed-immature-permanent-incisor-a-case-report
#20
Claudio Maniglia-Ferreira, Fabio de Almeida Gomes, Marcelo de Morais Vitoriano
This case report discusses the successful endodontic treatment of an open apex maxillary right permanent central incisor that had been avulsed and incorrectly replanted in a 7-year-old patient. The tooth was carefully re-extracted followed by cleaning of the alveolar socket and immediate replantation. However, pulp necrosis was diagnosed, and regenerative endodontic treatment was performed. The root canal system was disinfected by passive ultrasonic irrigation with 2.5% sodium hypochlorite. At the first visit, the tooth was repositioned and immobilized with an appropriate semirigid splint...
May 17, 2017: Journal of Endodontics
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