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ABSTRACT: 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.
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.
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).
The addition of CaCl(2) to MTA pulp-capping agent did not improve the properties of this biomaterial.
Journal of endodontics 06/2011; 37(6):786-8. · 2.95 Impact Factor
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ABSTRACT: The purpose of this study was to compare the histopathologic reaction of four suturing materials: silk, polyvinylidene fluoride (PVDF), polyglycolic acid, and catgut in the oral mucosa of albino rabbits.
The twenty-one male mature albino rabbits which were used in this study were randomly divided into three groups of seven each. Silk, PVDF, polyglycolic acid and catgut suture materials were tested in the oral mucosa of these animals. The animals were sacrificed 2, 4, and 7 days after suturing. Two pathologists evaluated the samples by determining the presence and level of inflammation, granulation tissue, and fibrosis formation. Data were statistically analyzed by Kruskal Wallis and Mann-Whitney U tests.
Histological features of the samples showed that PVDF and plain catgut suture materials produced more fibrous tissue (favorable response) on the fourth day in comparison with silk suture (P=0.02). Also, in the 7-day samples PVDF sutures produced the mildest inflammation when compared with the silk sutures (P=0.015).
According to the results of this study, it can be convey that PVDF suture materials created mild tissue reactions and can be a reasonable candidate for suturing oral tissues.
Iranian endodontic journal. 01/2010; 5(2):69-73.
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ABSTRACT: We studied the correlation between the clinical and histopathologic diagnoses of oral lichen planus (OLP) based on the modified World Health Organization (WHO) diagnostic criteria (2003).
First, 4 oral pathologists and 4 clinicians reviewed and categorized 62 microscopic slides and clinical photographs based on WHO 1978 criteria, and then based on modified WHO definition. The number of photographs and microscopic slides in which all clinicians and all pathologists agreed were calculated and compared.
Based on 1978 criteria, in 68% of cases in which all clinicians agreed about the diagnosis of OLP, all pathologists agreed about the diagnosis of OLP. Conversely, in 79% of cases in which all pathologists agreed on the diagnosis of OLP, all clinicians agreed on the diagnosis of OLP. Based on modified criteria, in 93.87% of cases in which all clinicians agreed on the diagnosis of OLP, all pathologists agreed on the diagnosis of OLP. Similarly, in 95.83% of the cases in which all pathologists agreed about the diagnosis of OLP, all clinicians agreed about the diagnosis of OLP.
Results show higher clinicopathologic correlation in the diagnosis of OLP based on the modified criteria of OLP compared with the 1978 criteria.
Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics 07/2009; 107(6):796-800. · 1.50 Impact Factor
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ABSTRACT: This report describes a case of a young patient in whom all the mandibular incisor teeth suffered complicated crown fractures because of a car accident. For all mandibular incisors, pulpotomy with calcium hydroxide were performed in order to achieve apexogenesis and the teeth were restored with a double-seal of glass ionomer cement and composite resin. The patient was reviewed over 11 years. All the mandibular incisor teeth showed continued root development and complete apex formation. Pulp canal obliteration was observed in only the mandibular right central incisor.
Australian Endodontic Journal 09/2006; 32(2):75-8. · 0.96 Impact Factor
