A common approach for restoring compromised posterior teeth is to reconstruct the missing anatomic crown with a dental restorative material and prepare the remaining tooth structure for an artificial veneer. Because this procedure is also compounded by designing subgingival finish lines for tooth preparations, a conservative approach for the fabrication of one-piece castings is suggested that incorporates both foundations and cuspal protection, with finish lines prepared above the gingival crest. Patient selection, advantages, disadvantages, and armamentarium are discussed.
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http://dx.doi.org/10.1016/0022-3913(93)90136-c | DOI Listing |
Biology (Basel)
November 2023
Univ. Bordeaux, CNRS, Ministère de la Culture, PACEA, UMR 5199, F-33600 Pessac, France.
Zinc is incorporated into enamel, dentine and cementum during tooth growth. This work aimed to distinguish between the processes underlying Zn incorporation and Zn distribution. These include different mineralisation processes, the physiological events around birth, Zn ingestion with diet, exposure to the oral environment during life and diagenetic changes to fossil teeth .
View Article and Find Full Text PDFClin Oral Investig
April 2022
Department of Biomaterials Science and Turku Clinical Biomaterials Center-TCBC, Institute of Dentistry, University of Turku, Turku, Finland.
Objectives: The aim of this in vitro study was to investigate the fatigue survival and fracture behavior of endodontically treated (ET) premolars restored with different types of post-core and cuspal coverage restorations.
Materials And Methods: MOD cavities were prepared on 108 extracted maxillary premolars. During the endodontic treatment, all teeth were instrumented with rotary files (ProTaper Universal) to the same apical enlargement (F2) and were obturated with a matched single cone obturation.
J Conserv Dent
July 2021
Department of Conservative Dentistry and Endodontics, YMT Dental College and Hospital, Navi Mumbai, India.
Restorative treatment in recent times has seen a paradigm shift due to minimally invasive adhesive dentistry. With advent of material science, bonding mechanisms, and superior isolation techniques, treatments based entirely on adhesion are effectively attainable. The choice between direct and indirect restorative technique, mainly in posterior areas, is still a challenge and involves biomechanical, anatomical, functional, esthetic, and economic considerations.
View Article and Find Full Text PDFAnat Rec (Hoboken)
January 2022
Department of Anthropology, The Ohio State University, Columbus, Ohio, USA.
Studies of enamel growth and thickness, whether in paleoanthropology, bioarchaeology, or primatology, require measurements of crown height (CH), cuspal enamel thickness (CET), average (AET), and/or regional enamel thickness (RegAET) on complete, unworn crowns. Yet because fully unworn crowns are uncommon, three methods to bolster sample sizes by reconstructing slightly worn teeth have been developed: Profile, Polynomial, and Pen Tool. Although these methods have been tested for accuracy, no study has yet directly compared the three methods to assess their performance across CH, CET, AET, and RegAET measurements.
View Article and Find Full Text PDFDent Mater
May 2021
Minnesota Dental Research Center for Biomaterials and Biomechanics, School of Dentistry, University of Minnesota, United States. Electronic address:
Objective: This paper aimed to derive analytical solutions for the shrinkage stress and cuspal deflection in model Class-II mesial-occlusal-distal (MOD) resin-composite restorations to better understand their dependence on geometrical and material parameters. Based on the stress solutions, it was shown how design curves could be obtained to guide the selection of dimensions and materials for the preparation and restoration of this class of cavities.
Methods: The cavity wall was considered as a cantilevered beam while the resin composite was modeled as Winkler's elastic foundation with closely-spaced linear springs.
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