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Results for “DENTAL RESTORATION, TEMPORARY”

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At least 631 records · Page 35Linked to original sources
PubMed1990

A provisional and new crown to fit into a clasp of an existing removable partial denture.

A technique that forms an abutment crown to fit into an existing clasp of a removable partial denture by relining an acrylic resin pattern is described. The outer contour of the pattern is made within an irreversible hydrocolloid impression by use of Duralay autopolymerizing acrylic resin applied with precision dispensers. The pattern is formed before tooth preparation and is made approximately 0.4 mm thick. After tooth preparation, the shell pattern is relined with the same autopolymerizing resin and the existing removable partial denture is fitted over it. The gross pattern is trimmed and the margins refined on a die made from an elastomer impression. The refined pattern is cast and finished, avoiding reduction of the contours established. A second crown is similarly formed in tooth-colored autopolymerizing acrylic resin. It serves as a provisional restoration that allows the patient to wear the removable partial denture while the laboratory procedures are performed.

Crowns↗
PubMed1975

Endodontic emergency dilemma: leave tooth open or keep it closed?

Various methods of emergency endodontic treatment for teeth with vital pulps have been suggested, and some authors have advised that the access be left open if the tooth is tender to percussion. This study evaluated 225 open and closed teeth which were referred after emergency treatment where pulps had been vital. When the access had been left open, a statistically significant greater number of appointments were needed to complete treatment and more intratreatment exacerbations occurred than when the tooth was kept sealed.

Dental Pulp Exposure↗
PubMed1976

Allergic stomatitis caused by self-polymerizing resin.

This is a fully documented case, including biopsy and patch testing, of a patient who was hypersensitive to self-polymerizing polymethyl methacrylate. On two occasions, a 24-year-old woman with a history of multiple allergies developed allergic reactions to temporary acrylic dental restorations. The lesions disappeared upon removal of the restorations. Microscopic findings were consistent with an allergic reaction. Patch testing confirmed that the allergen was the monomer and indicated methods of processing the self-polymerizing resin to allow it to become essentially nonreactive in a sensitized patient.

Adult↗
PubMed1984

Acute allergic reaction to eugenol.

Eugenol has been widely used in the dental profession. It is an effective material that is incorporated into many dental products. Contact dermatitis due to this chemical is not unusual. However, true serious allergic reactions are extremely rare. This paper reports on such a case. Careful assessment of patients and of their dental and medical history is necessary to avoid disaster in the office.

Dental Materials↗
PubMed1990

Intracoronal radiolucencies within unerupted teeth. Case report and review of literature.

A panoramic radiograph obtained during orthodontic treatment revealed an intracoronal radiolucency within an unerupted permanent second molar. This unusual entity was successfully treated by surgical and endodontic intervention, followed by restorative and orthodontic treatment. These treatments enabled the tooth to maintain pulpal vitality, erupt, complete root formation, and function. This report will review the proposed etiologies for this condition, discuss the need for surgical intervention, and present the details of the case.

Calcium Hydroxide↗
PubMed1990

Apical closure of mature molar roots with the use of calcium hydroxide.

Calcium hydroxide may induce apical root closure in affected mature teeth as well as in immature teeth. Once an apical hard tissue barrier is formed, a permanent root canal filling can be safely condensed. Two cases are described in which calcium hydroxide induced apical root closure in mature molar teeth where the apical constriction was lost because of chronic inflammatory process.

Adult↗
PubMed1994

Assessment of marginal stability and permeability of an interim restorative endodontic material.

The purpose of this study was to assess the marginal stability and permeability of a new interim restorative endodontic material, Tempit (Centrix Inc., Milford, Conn.), and to compare the findings with the results of two commonly used restorative endodontic materials, Cavit (Premier Dental Products Co., Philadelphia, Pa.) and IRM (Intermediate Restorative Material Capsules, The Caulk Co., Division of Dentsply International Inc., Milford, Del.) This study was performed in several steps. First, the endodontic access cavities were prepared and restored on 80 extracted mandibular molars. The samples were exposed to methylene blue dye solution for 6 days, thermocycled, and sectioned; the dye penetration and diffusion were measured along the margins and into the body of the materials. The second experiment was a special study performed in standardized glass tubes to better evaluate the marginal and body dye penetration into the materials by increasing the length of the fillings. To eliminate the possibility of hygroscopic setting mechanisms of materials, samples were first allowed to set under water before dye was introduced. Cavit and Tempit showed a substantial amount of dye diffusion into the body of the materials. Cavit exhibited the best sealing ability at all times. The marginal and body dye penetration were significantly different for the Tempit material in all experiments than Cavit (p < 0.001). IRM demonstrated the least body penetration of all three materials (p < 0.001) but had a substantial marginal leakage not significantly different from the results of the Tempit material (p = 0.6 and p = 0.1).(ABSTRACT TRUNCATED AT 250 WORDS)

Analysis of Variance↗
PubMed1996

An in vitro microleakage study of three restorative techniques for Class II restorations in posterior teeth.

Microleakage associated with a silver reinforced restorative glass ionomer cement used alone and also as a laminate restoration with a composite resin and dentine adhesive in extracted premolar and molar teeth was evaluated. The influence of artificial saliva, thermal and load cycling was also determined. The composite and dentine adhesive alone were used for comparative purposes. The results showed that the composite resin/dentine adhesive restorations showed substantial microleakage at both the cervical and occlusal margins of the Class II restorations, whereas the glass ionomer alone showed little or no leakage after storage in water for seven days at 37 degrees C. These results were confirmed when the restorations were thermo-cycled and load stressed. The addition of glass ionomer as a base to the composite forming the laminate restoration reduced the leakage substantially and in certain conditions the leakage was less than that observed with glass ionomer restoratives alone.

Dental Leakage↗