The clinical potential and limits of the all-ceramic fixed partial denture restorations

• Main Author: Harry Laksono
• Format: Article
• Language: English
• Published: Universitas Airlangga 2007-12-01
• Series: Dental Journal: Majalah Kedokteran Gigi
• Subjects: all-ceramic; fixed partial dentures; framework
• Online Access: http://e-journal.unair.ac.id/index.php/MKG/article/view/1040

<span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>High-strength all-ceramic systems for fixed partial dentures (FPDs) is gaining popularity as an alternative to the well established </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>metal-ceramic FPDs. Several new framework materials and technique such as lithium disilicate, aluminum oxide and yttrium tetragonal </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>zirconia polycrystal have been developed with improved strength, marginal discrepancy and esthetics. Since not every all-ceramic </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>system can be used for a variety application, proper selection of the materials is an important for the success of all-ceramic FPDs. </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>The longevity of dental restorations is an important health concern and the clinician placed great emphasis on mechanical properties </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>to define the clinical indication of the ceramic materials because of their brittleness and low fracture toughness. The stronger and </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>tougher framework material would improve the reliability and the longevity of dental restoration. To fabricated of an all-ceramic </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>FPDs, material would be required with a flexural strength in excess of 300 MPa and fracture toughness 3 MPa/m</em><span style="font-family: TimesNewRomanPS-ItalicMT; font-size: 7pt; color: #231f20; font-style: normal; font-variant: normal;"><em>½</em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>. Zirconium has </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>a better mechanical properties than alumina and lithium disilicate glass-ceramic, result from the transformation toughening, free of </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>glass phase and minimal flaws. Whereas lithium disilicate glass-ceramic has a better translucency than alumina and zirconium based </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>ceramic, result from the higher content of glass phase than that two materials. The purpose of this article is to present the information </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>that can guide the practioner in the decision making process about all-ceramic FPDs systems. It can be concluded that the all-ceramic </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>FPDs are seems to be an acceptable clinically prosthodontic treatment according to the short-term studies and the lithium disilicate </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>and alumina-based ceramic materials are acceptable for 3 units anterior FPDs, whereas zirconia-based ceramic are acceptable for </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>3–5 units anterior and posterior FPDs with 2 pontics. However, further investigation and more clinical long-term follow-up studies </em><span style="font-family: Tribune-Italic; font-size: 9pt; color: #231f20; font-style: normal; font-variant: normal;"><em>are needed.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>