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Healing process following application of set or fresh mineral trioxide aggregate as a root-end filling material


, : Healing process following application of set or fresh mineral trioxide aggregate as a root-end filling material. European Journal of Dentistry 5(1): 19-23

An unsuccessful attempt to reach the apical area or to place the retrograde material is a major difficulty in periradicular surgery. The aim of this study was to compare the histological evaluation of the healing process following an orthograde versus a retrograde application of mineral trioxide aggregate (MTA) as a root-end filling material during apical surgery on cats' teeth in order to find out whether orthograde placement of MTA before surgery can be used instead of retrograde placement during surgery. In this experimental study, 24 canine teeth in 12 mature and healthy cats were filled with either MTA or gutta-percha in an orthograde manner. Two weeks later, the teeth with MTA were surgically exposed and resected to the set-MTA within the canals. The teeth previously filled by gutta-percha were also surgically exposed, and retrograde cavities were prepared at the root ends and filled with fresh-MTA. After 8 weeks, the animals were euthanized by vital perfusion. Six-micron histological slices were prepared from samples, stained by Hematoxylin & Eosin, and histologically studied by means of a light microscope. The collected data was analyzed by the Chi-square and the T-test. One of the samples in the fresh-MTA group was omitted during processing because of inappropriate sectioning. In the set-MTA group, 5 out of 12 showed chronic abscess, while in the fresh-MTA group, 2 out of 11 were discovered to have chronic abscess; however, no significant difference was observed (P>.05). Hard tissue healing (cementum, bone, cementum + bone formation) in the set-MTA and fresh-MTA groups were 7 out of 12 and 9 out of 11, respectively. While healing seemed more likely to occur in the fresh-MTA group, the difference was statistically insignificant (P>.05). The magnitude of bone, cementum, or bone and cementum formation showed slight differences between the two groups; however, the figures failed to show any marked differences (P>.05). Orthograde placement of MTA could be used as an obturation material before surgery. In this way, after root-end resection, there would be no need for root-end preparation and filling procedures.

US$29.90

PMID: 21228953


Other references

Nassig, W.A.; Treadaway, C.G., 1997: A new subspecies of the selene-group of the genus Actias from the Philippines Lepidoptera Saturniidae Eine neue Unterart aus der selene-gruppe der gattung Actias von den Philippinen Lepidoptera Saturniidae. Nachrichten des Entomologischen Vereins Apollo. Mai; 181: 89-100

Manjeri Keloth, S.; Arjunan, S.P.; Kumar, D., 2017: Computing the variations in the self-similar properties of the various gait intervals in Parkinson disease patients. This study has investigated the stride, swing, stance and double support intervals of gait for Parkinson's disease (PD) patients with different levels of severity. Self-similar properties of the gait signal were analyzed to investigate the ch...

Chung, Y.; Ané, Cécile., 2011: Comparing two Bayesian methods for gene tree/species tree reconstruction: simulations with incomplete lineage sorting and horizontal gene transfer. With the increasing interest in recognizing the discordance between gene genealogies, various gene tree/species tree reconciliation methods have been developed. We present here the first attempt to assess and compare two such Bayesian methods, Bay...

Peter, K.V.; Rai, B., 1976: Stability parameters and genotype x environment interactions in tomato. In elite germ plasm of tomato (Lycopersicon esculentum Mill.), the yield components, days to fruit maturity, primary branches per plant and inflorescences per plant are phenotypically stable attributes. Their phenotypic expression does not fluctua...

Cravedi, J.-Pierre; Zalko, D.; Savouret, J.-Francois; Menuet, A.; Jegou, B., 2007: Le concept de perturbation endocrinienne et la sante humaine. In Europe, endocrine disruptors (EDs) have been defined as substances foreign to the body that have deleterious effects on the individuals or their descendants, due to changes in endocrine function. In the United States, EDs have been described a...

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Skripko K.A.; Fil kova Y.M.; Khramova G.G., 1968: Regime of the crater lake in Ebeko volcano in 1966. Temperature, chemistry, surface oscillations, associated fumarolic activity, Soviet Far East, Kurils, Paramushir island.

Miller, R.R.; Nelems, B.; Evans, K.G.; Müller, N.L.; Ostrow, D.N., 1988: Glandular neoplasia of the lung. A proposed analogy to colonic tumors. In 62 consecutive resections for adenocarcinoma of the lung, 50 cases (81%) had single adenocarcinomas and 12 (19%) had multiple adenocarcinomas. In seven of these 12 patients, two adenocarcinomas were found. In the other five patients, the specim...

Chapleau, N.M.ngavel, C.C.mpoint, J.; Lamballerie-Anton, M.D., 2004: Effect of high-pressure processing on myofibrillar protein structure. Modification of myofibrillar proteins induced by high-pressure processing has been investigated at pressures ranging from 50 to 600 MPa for 10 min at 20 degrees C. Analysis by spectroscopic methods and circular dichroism of myofibrillar proteins i...

Olive, F., 2006: Evolution of Plio Pleistocene larger carnivores in Africa and Western Europe Evolution des grands carnivores au Plio Pleistocene en Afrique et en Europe occidentale. This paper provides an overview of current knowledge of Plio Pleistocene Carnivora from Africa and Europe. In Plio Pleistocene times, many genera extend their ranges in Africa and Eurasia but their evolution are quite distinct in the two continent...