This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Matsumura, H. Articles by Kitazawa, S. Search for Related Content PubMed PubMed Citation Articles by Matsumura, H. Articles by Kitazawa, S. Social Bookmarking                         What's this?

A Metal Halide Light Source for Laboratory Curing of Prosthetic Composite Materials

Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, 1-7-1, Sakamoto, Nagasaki 852, Japan

N. Tanoue

Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, 1-7-1, Sakamoto, Nagasaki 852, Japan

M. Atsuta

Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, 1-7-1, Sakamoto, Nagasaki 852, Japan

S. Kitazawa

Toho Dental Products Co., Ltd., 2-10-2, Uchiya, Urawa 336, Japan

A high-intensity laboratory photo-curing unit has been developed with the aim of improving the post-curing properties of composite veneering materials. This study introduces the structure of the curing unit and examines the resulting properties of a representative composite material. The curing unit is equipped with two metal halide lamps that radiate both ultraviolet and visible light. Unlike conventional metal halide lamps for industrial use, these metal halide lamps radiate an increased intensity of visible radiation. Properties of a microfilled composite veneering material cured with the new metal halide unit were ascertained. A xenon photo-curing unit was also used as a control. The specimens cured with the metal halide unit exhibited greater Knoop hardness numbers and flexural moduli as compared with those cured with the xenon unit, and also showed reduced water solubility values. These results suggest that the metal halide light source is effective in curing composite materials within a shorter period of time and with improved conversion.

Key Words: photo-curing unit • light source • composite veneer.

REFERENCES

• Bergman B., Nilson H., Andersson M. (1994). Dentacolor as veneering material for titanium. A clinical evaluation after 51-72 months. Swed Dent J 18:25-28.[Medline] [Order article via Infotrieve]
• Ekfeldt A., 0ilo G. ( 1988). Occlusal contact wear of prosthodontic materials. An in vivo study. Acta Odontol Scand 46:159-169.[Medline] [Order article via Infotrieve]
• International Organization for Standardization ( 1992). Dentistry-Polymer-based crown and bridge materials. ISO 10477:1992(E).
• Jones RM, Goodacre CJ, Moore BK, Dykema RW (1989). A comparison of the physical properties of four prosthetic veneering materials. J Prosthet Dent 61:38-44.[Medline] [Order article via Infotrieve]
• Kawaguchi M., Fukushima T., Horibe T. (1988). Effect of monomer structure on the mechanical properties of light-cured unfilled resins. Dent Mater J 7:174-181.[Medline] [Order article via Infotrieve]
• Matsumura H., Leinfelder KF (1993). Localized three-body wear of six types of composite resin veneering materials, J Prosthet Dent 70:207-213.[Medline] [Order article via Infotrieve]
• Matsumura H., Varga J., Masuhara E. (1986). Composite type adhesive opaque resin. Dent Mater J 5:83-90.[Medline] [Order article via Infotrieve]
• McCabe JF, Carrick TE (1989). Output from visible-light activation units and depth of cure of light-activated composites. J Dent Res 68:1534-1539.
• Michl RJ (1978). Isosit-a new dental material. Quintessence Int 9(3):29-33.[Medline] [Order article via Infotrieve]
• O'Neal SJ, Leinfelder KF, Barrett CE (1989). Clinical evaluation of Dentacolor as a posterior veneering agent. J Esthet Dent 1:29-33.[Medline] [Order article via Infotrieve]
• Peutzfeldt A. (1994). Correlation between recordings obtained with a light-intensity tester and degree of conversion of a light-curing resin. Scand J Dent Res 102:73-75.[Medline] [Order article via Infotrieve]
• Ruyter IE, Sjøvik Kleven IJ (1987). Monomers and filler content of resin-based crown and bridge materials. Dent Mater 3:315-321.[Medline] [Order article via Infotrieve]
• Ruyter IE, Nilner K., Moller B. (1987). Color stability of dental composite resin materials for crown and bridge veneers. Dent Mater 3:246-251.[CrossRef][Medline] [Order article via Infotrieve]
• Strohaver RA, Mattie DR (1987). A scanning electron microscope comparison of microfilled fixed prosthodontic resins. J Prosthet Dent 57:559-565.[Medline] [Order article via Infotrieve]
• Suzuki S., Nakabayashi N., Masuhara E. (1982). The evaluation of new dental resins prepared with polyfunctional methacrylate monomers. J Biomed Mater Res 16:275-287.[Medline] [Order article via Infotrieve]
• Yamaga T., Sato Y., Akagawa Y., Taira M., Wakasa K., Yamaki M. (1995). Hardness and fracture toughness of four commercial visible light-cured composite resin veneering materials. J Oral Rehabil 22:857-863.[Medline] [Order article via Infotrieve]

Journal of Dental Research, Vol. 76, No. 2, 688-693 (1997)
DOI: 10.1177/00220345970760021001


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?

This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Matsumura, H. Articles by Kitazawa, S. Search for Related Content PubMed PubMed Citation Articles by Matsumura, H. Articles by Kitazawa, S. Social Bookmarking                         What's this?