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1.
Article Dans Anglais | IMSEAR | ID: sea-139999

Résumé

Aim: In an effort to minimize tooth preparation, yet provide additional retention to compromised tooth structure, bonded amalgam restorations were introduced. Various resin-based adhesives have been tried earlier under bonded amalgam restorations. Still there are controversies regarding the outcome of bonded amalgam restorations regarding their adaptability to the tooth structure and microleakage. Therefore, this study was undertaken to compare the microleakage of bonded amalgam restorations using different adhesive materials. Materials and Methods: Standard Class I cavities were prepared on occlusal surfaces of 60 human molars. Teeth (n=60) were divided into three groups according to the material employed, as follows: group I: amalgam with glass ionomer cement (GIC) (type I); group II: amalgam with resin cement (Panavia F 2.0) and group III: amalgam with Copalex varnish as a control. Following restoration, the teeth were submitted to thermal cycling. The teeth were subsequently immersed in 2% rhodamine B dye under vacuum for 48 hours and sectioned to allow the assessment of microleakage under stereomicroscope. Results: The values were tabulated and the results were statistically analyzed using analysis of variance (ANOVA), Tukey's post hoc test and Kruskal-Wallis test. Amalgam with type I GIC showed the least leakage with no statistically significant difference (P value 0.226) when compared to amalgam with Panavia F 2.0 and amalgam with varnish (P value 0.107). Conclusion: It can be concluded that bonded amalgam with type I GIC is a good alternative to amalgam with resin cement (Panavia F 2.0) and amalgam with varnish for large restorations, with the added advantages of GICs. Clinical Significance: Bonded amalgam restorations prevent over-preparation and reduce the tooth flexure. GIC type I under amalgam provides chemical bonding in between amalgam and tooth structure and thus reduces the microleakage.


Sujets)
Amalgame dentaire/composition chimique , Collage dentaire , Isolation de cavité dentaire/méthodes , Préparation de cavité dentaire/méthodes , Ciments dentaires/composition chimique , Percolation dentaire/classification , Adaptation marginale (odontologie) , Rétention de prothèse dentaire/méthodes , Restaurations dentaires permanentes/méthodes , Colorants fluorescents/diagnostic , Ciment ionomère au verre/composition chimique , Humains , Test de matériaux , Molaire , Céments résine/composition chimique , Rhodamines/diagnostic , Propriétés de surface , Température , Facteurs temps , Vide
2.
Article Dans Anglais | IMSEAR | ID: sea-147091

Résumé

This report points out a correlation between asthma and dental caries. It also gives certain guidelines on the measures to be taken in an asthmatic to negate the risk of dental caries.

3.
J Indian Soc Pedod Prev Dent ; 2008 Mar; 26(1): 36-9
Article Dans Anglais | IMSEAR | ID: sea-114718

Résumé

Tooth resorption is a perplexing problem for all dental practitioners. The etiologic factors are vague, the diagnoses are educated guesses and, often, the chosen treatment does not prevent the rapid disappearance of the calcified dental tissues. This becomes all the more confusing if the tooth in question is a pulpally involved young permanent tooth. Presented in this report is the case of an upper first young permanent molar that underwent complete root resorption following root canal therapy and obturation.


Sujets)
Enfant , Femelle , Études de suivi , Gutta-percha , Humains , Molaire/anatomopathologie , Produits d'obturation des canaux radiculaires , Obturation de canal radiculaire , Traitement de canal radiculaire , Rhizalyse/diagnostic , Mobilité dentaire/diagnostic
4.
Article Dans Anglais | IMSEAR | ID: sea-46128

Résumé

An ankylosed tooth can be suitable for obtaining orthodontic anchorage. However, if such a tooth lacks adequate clinical crown height, the anchorage will not be effective. In those situations surgical luxation or restorative crown augmentation is suggested. This case report is about the restorative treatment of an ankylosed, infraoccluded tooth to enhance the anchorage for forced orthodontic eruption of impacted maxillary canines. A crown augmentation in the form of a modified bilayered (sandwich) restoration using GIC, Composite resin and Silver amalgam on left maxillary first molar (26) was successful in sustaining the anchorage for forced eruption and alignment of impacted canines.


Sujets)
Adolescent , Résines composites , Amalgame dentaire , Restaurations dentaires permanentes/méthodes , Humains , Mâle , Procédures d'ancrage orthodontique/méthodes , Orthodontie correctrice , Technique d'expansion palatine/instrumentation , Couronne dentaire
5.
Article Dans Anglais | IMSEAR | ID: sea-46481

Résumé

Success of root canal therapy depends on the complete eradication of microflora from the root canal system. A great deal of research is needed to identify and define the role of the pathogens which are involved in the pathogenesis of the periradicular diseases. This will help the endodontist to plan the best treatment by irradiation of pathogens which, in turn predict the outcome of the treatment. This article reviews the endodontic microflora, routes of microbial entry, methods to identify endodontic microbes and markers that permit the clinician to know when to conclude the treatment.


Sujets)
Antibactériens/usage thérapeutique , Antibioprophylaxie , Infections bactériennes/microbiologie , Cavité pulpaire de la dent/microbiologie , Maladies de la pulpe dentaire/microbiologie , Test ELISA , Humains , Tests de sensibilité microbienne , Réaction de polymérisation en chaîne
6.
Article Dans Anglais | IMSEAR | ID: sea-46268

Résumé

Maxillary sinus can pose diagnostic dilemma radiographically because of its anatomical variation which can mimic a periapical pathosis. This case report deals with one such diagnostic problem, where a maxillary sinus was interpreted in an intraoral periapical radiograph as a periapical cyst. With the advances in imaging techniques, the use of an Ultrasound imaging together with application of Colour Power Doppler helped in revealing the contents of the radiolucent area and come up with an accurate diagnosis. Thus a thorough knowledge about the normal anatomy and its variations and proper diagnostic aids are essential in the diagnosis of periapical pathology.


Sujets)
Adulte , Diagnostic différentiel , Femelle , Humains , Sinus maxillaire/malformations , Kyste radiculaire/imagerie diagnostique
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