TITLE

Scanning Electron Microscopy and Energy Dispersive Analysis of Machined Denture Base Surfaces

AUTHOR(S)
Radford, David R.; Walter, John D.; Challacombe, Stephen J.
PUB. DATE
May 1997
SOURCE
International Journal of Prosthodontics;May/Jun1997, Vol. 10 Issue 3, p222
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To relate the characteristics of rotary instruments to the surfaces they produce, acrylic resin, Molloplast B, and Novus were investigated with energy dispersive analysis and scanning electron microscopy (secondary and backscatter images) before and after machining. The chemical composition of cutting instruments, material surfaces, and residues was identified. Machined debris embedded in Molloplast B after machining with the Molloplast stone was found to contain a mean lead content of 45%. High concentrations of barium sulphate were discovered on the arbor band-machined surface of Novus. These differences were related to clinically appropriate instrumentation, and, therefore, biocompatability studies that intimately relate to the in vivo situation should be considered for new materials.
ACCESSION #
37703492

 

Related Articles

  • Reinforcement of Acrylic Resin Denture Base With a Ni-Cr Alloy Plate. Kawano, Fumiaki; Miyamoto, Masashi; Tada, Nozomu; Matsumoto, Naoyuki // International Journal of Prosthodontics;Sep/Oct1990, Vol. 3 Issue 5, p484 

    A pilot study was conducted to evaluate the strengthening effect of a Ni-Cr metal plate on an acrylic resin test specimen. Test specimens were retained using a mechanical method and adhesion with 4-META resin. Three positions of the metal plate were evaluated: on the compression surface, on the...

  • Mechanical properties of denture base resins: An evaluation. Chand, Pooran; Singh Patel, Chandra Bhusan; Singh, Balendra Pratap; Singh, Raghuwar Dayal; Singh, Kamleshwar // Indian Journal of Dental Research;Jan-Feb2011, Vol. 22 Issue 1, p200 

    Background: Acrylic resin dentures are susceptible to fracture after clinical use, which is a problem of concern in prosthodontics. Impact failure outside the mouth and flexure fatigue failure in the mouth are two most important causes of fracture of denture base. Aim: This study evaluated the...

  • Adding a Posterior Palatal Seal To a Metal-Based Prosthesis. Lyon, H. Edward // International Journal of Prosthodontics;May/Jun1989, Vol. 2 Issue 3, p283 

    A method of adding an acrylic resin posterior palatal seal to a cast base metal palate of a maxillary complete denture is presented. The technique may be used to create the original posterior palatal seal or to enhance an existing seal. The advantages and disadvantages of the metal palate are...

  • Wear Resistance of Artificial Denture Teeth. Ghazal, Muhamad; Steiner, Martin; Kern, Matthias // International Journal of Prosthodontics;2008, Vol. 21 Issue 2, p166 

    This study aimed to evaluate the wear resistance of artificial teeth when opposed by antagonists made from the same material. The artificial teeth tested included ceramic teeth, nanofilled composite resin teeth, acrylic resin teeth, and experimental acrylic resin teeth. After 600,000 chewing...

  • Integrity of the Interface Between Denture Base and Soft Liner: A Scanning Electron Microscopic Study. Muralidhar, G.; Satish Babu, C.; Shetty, Shilpa // Journal of Indian Prosthodontic Society (Springer Science & Busi;Jun2012, Vol. 12 Issue 2, p72 

    Aims and objectives of the study was to study the integrity of the interface between the denture base and the soft liner when the thickness of the soft liner was 0.5, 1.0 and 2.0 mm, and to study the integrity of the soft liner and denture base interface as influenced by aging process. 80...

  • A direct technique for the fabrication of a visible light-curing resin provisional restoration. Passon, Craig; Goldfogel, Marvin // Quintessence International;Sep1990, Vol. 21 Issue 9, p699 

    A properly fabricated provisional restoration will, among other things, provide acceptable esthetics. Although many materials has been used for provisional restorations, when esthetics is of primary concern, the choice is limited to tooth-colored resin materials. Recently, a tooth-colored,...

  • Denture Base Reinforcement Using Woven Polyethylene Fiber. Ladizesky, Noe H.; Chow, Tak W.; Cheng, Yi Y. // International Journal of Prosthodontics;Jul/Aug1994, Vol. 7 Issue 4, p307 

    Reinforcement of acrylic denture base resin with high-performance polyethylene fiber in woven form produced a substantial improvement of stiffness and impact strength, as well as reducing the sensitivity of the material to notches that mimic anatomic features. The mechanical properties of the...

  • Rigid and resilient investing materials - Expected movement of teeth In fabrication of complete dentures: An invitro study. Turakhia, Hetal; Ram, Sabita M. // Journal of Indian Prosthodontic Society;Mar2005, Vol. 5 Issue 1, p23 

    Dentistry is going through a series of radical and important changes. So, has the field of Prosthodontics seen an introduction of numerous techniques being offered for the processing of dentures with acrylic resin according to their investing method. The investing could be done by Compression...

  • denture. Peters, Michael // BMA A-Z Family Medical Encyclopedia;2004, p221 

    An encyclopedia entry for the term "denture" is presented. It refers to an appliance that serves as a replacement for missing natural teeth. It is composed of a metal and/or acrylic base which is mounted with acrylic teeth. The mouth is accurately fitted with denture baseplates, which are made...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics