Histologic Assessment of Quick-Set and Mineral Trioxide Aggregate Pulpotomies in a Canine Model (original) (raw)
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Journal of Applied Oral Science, 2004
C C onsidering previous studies on the similarity between the chemical composition of the mineral trioxide aggregate and the Portland cement, the purpose of this study was to investigate the pulp response of dog's teeth after pulpotomy and direct pulp protection with MTA Angelus and white Portland cement. Thirty eight pulp remnants were protected with these materials. One hundred and twenty days after treatment, the animals were sacrificed and the specimens removed and prepared for histological analysis. Both materials demonstrated the same results when used as pulp capping materials, inducing hard tissue bridge formation and maintaining pulp vitality in all specimens. The MTA Angelus and the white Portland cement showed to be effective as pulp protection materials following pulpotomy. UNITERMS: Pulpotomy; Mineral trioxide aggregate; White Portland cement.
Materials (Basel, Switzerland), 2018
This beagle pulpotomy study compared the inflammatory response and mineralization-inducing potential of three calcium silicate cements: ProRoot mineral trioxide aggregate (MTA) (Dentsply, Tulsa, OK, USA), OrthoMTA (BioMTA, Seoul, Korea), and Endocem MTA (Maruchi, Wonju, Korea). Exposed pulp tissues were capped with ProRoot MTA, OrthoMTA, or Endocem MTA. After 8 weeks, we extracted the teeth, then performed hematoxylin-eosin and immunohistochemical staining with osteocalcin and dentin sialoprotein. Histological evaluation comprised a scoring system with eight broad categories and analysis of calcific barrier areas. We evaluated 44 teeth capped with ProRoot MTA ( = 15), OrthoMTA ( = 18), or Endocem MTA ( = 11). Most ProRoot MTA specimens formed continuous calcific barriers; these pulps contained inflammation-free palisading patterns in the odontoblastic layer. Areas of the newly formed calcific barrier were greater with ProRoot MTA than with Endocem MTA ( = 0.006). Although dentin sia...
Braz Dent …, 2001
Considering several reports about the similarity between the chemical compositions of the mineral trioxide aggregate (MTA) and Portland cement (PC), the subject of this investigation was to analyze the behavior of dog dental pulp after pulpotomy and direct pulp protection with these materials. After pulpotomy, the pulp stumps of 26 roots of dog teeth were protected with MTA or PC. Sixty days after treatment, the animal was sacrificed and the specimens removed and prepared for histomorphological analysis. There was a complete tubular hard tissue bridge in almost all specimens. In conclusion, MTA and PC show similar comparative results when used in direct pulp protection after pulpotomy.
Capping a Pulpotomy with Calcium Aluminosilicate Cement: Comparison to Mineral Trioxide Aggregates
Journal of Endodontics, 2014
Introduction: Calcium aluminate cements have shown little affinity for bacterial growth, low toxicity, and immunogenicity when used as a restoration material, but calcium aluminate cements have not been tested in vivo in pulpotomy procedures. Methods: To address this question, a calcium aluminosilicate cement (Quick-Set) was tested along with 2 mineral trioxide aggregates, ProRoot MTA and MTA Plus. These cements were used as a capping agent after pulpotomy. Control rats had no pulpotomy, or the pulpotomy was not capped. Proinflammatory cytokines interleukin (IL)-1b and IL-1a were measured, and histology was performed at 30 and 60 days after capping. The nociceptive response was determined by measuring the lengthening of the rat's meal duration. Results: and Conclusions: IL-1b and IL-1a concentrations were reduced in the capped teeth, but no differences were observed among the 3 cements. Dentinal bridging could be detected at both 30 and 60 days with each of the 3 cements, and the pulps were still vital 60 days after capping. Meal duration significantly shortened after placement of the 3 different cements, indicating a nociceptive response, but there were no differences among the materials. Calcium aluminosilicate cement had similar properties to mineral trioxide aggregates and is a viable option for pulpotomy procedures. (J Endod 2014;40:1429-1434
Journal of Endodontics, 2011
Introduction: The addition of some chemicals to mineral trioxide aggregate (MTA) may improve the physical properties of the biomaterial. The aim of this study was to compare a combination of MTA with/ without CaCl 2 as pulp-capping agents in dogs' teeth. Methods: The dental pulp of 32 teeth in four dogs were exposed and capped with either MTA or MTA/ CaCl 2 . After 2 months, the animals were sacrificed, and the teeth were prepared for histological evaluation. Pulpal response to the two capping materials was evaluated in terms of necrosis, inflammation, and formation of a calcified bridge. The chi-square test was used for data analysis. Results: Histological results showed a higher percentage of inflammation and necrosis and a lower percentage of calcified bridge formation in MTA/CaCl 2 samples compared with MTA; however, the differences were not statistically significant (P > .05). Conclusions: The addition of CaCl 2 to MTA pulp-capping agent did not improve the properties of this biomaterial. (J Endod 2011;37:786-788)
SciDoc Publishers, 2020
Background: The aim of this study was to evaluate the histological response of dental pulp tissue in primary molars to Modified Portland Cement (MPC) mixed with Zirconium Oxide and Calcium Chloride in comparison with Mineral Trioxide Aggregate (MTA). Methods: The study was conducted on children between 7.5-9 years of age, pulpotomy was performed on 60 Primary Molars (to be extracted as a part of Orthodontic treatment). The molars were divided randomly into two groups, each of them contains 30 teeth. After pulpotomy was conducted, the root Pulp was covered with MTA or MPC and a layer of Glass Ionomer Cement (GIC) and the tooth were filled with amalgam eventually. The teeth were extracted after one week, one month, and two months respectively and histological samples were collected and evaluated Based on the Inflammation response, soft tissue organization, and Dentinal bridge formation. Results: Modified Portland Cement has showed no significant differences in terms of inflammation response, soft tissue organization, and Dentinal bridge formation in comparison with MTA in the observation period. Conclusion: MPC can be a replacement material of MTA in terms of primary molars pulpotomy.
Dental research journal, 2008
Introduction: This study was carried out in order to compare mineral trioxide aggregate (MTA) and dycal in dog's teeth as pulp capping agents. Methods: After general and local anesthesia forty-two teeth of three dogs were used. In each tooth a class V cavity was prepared and the pulp was exposed using No.1 round bur. Then the exposed area was capped using either MTA or calcium hydroxide and the rest of the cavity was restored by amalgam. Radiographic image was taken before the procedure and after 4, 8 , and 12 weeks. The animals were sacrificed at 4, 8, and 12 weeks and the teeth were prepared for H&E staining. The pulps of the teeth were evaluated for inflammation, necrosis, and formation and thickness of calcified bridge. Histologic data were analyzed by Kruskal Wallis, ², Cochran, and Friedman tests. Results: Histopathologic results showed that in four weeks, MTA had significant differences with calcium hydroxide in the presence and thickness of calcified bridge (p=0.046) as well as inflammation (p= 0.014) and hyperemia (p=0.014). Eight weeks MTA specimens showed significant difference in thickness of calcified bridge (p=0.008). Twelve weeks after pulp capping, the amount of necrosis and chronic inflammation were higher in dycal specimens; however, there was no significant difference between two experimental groups. Radiographic evaluation did not show any periapical lesion, internal and external resorption, or widening of periodontal ligament in none of the teeth at all time intervals. Conclusion: Based on the result of this study, MTA showed to be a more reliable material as pulp capping agent in comparison with calcium hydroxide.