+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Marginal fit of 14-unit zirconia fixed dental prosthesis retainers

, : Marginal fit of 14-unit zirconia fixed dental prosthesis retainers. Journal of Oral Rehabilitation 36(2): 142-149

The marginal fit of 14-unit fixed dental prosthesis retainers and single-crown copings fabricated by the same computer-aided design (CAD)/computer-aided manufacturing (CAM) system were evaluated in vitro hypothesizing that the marginal opening might be independent of the type of restoration. Eight ivorine maxillary teeth (FDI locations 27, 25, 23, 21, 11, 13, 15 and 17) were prepared to accommodate a 14-unit prosthesis. Ten fixed dental prosthesis retainers and 40 single-crown-copings were fabricated using Zeno CAD/CAM on 20 master dies. Four cross-sections were made from each tooth and the marginal gap dimensions were measured. One-way anova was used to test the difference between the experimental groups and two-way anova and a post hoc test (Student-Newman-Keuls) were carried out to determine the influence of the location of the abutment tooth and the measurement location within the abutment tooth in the experimental groups (P < 0.05). Mean marginal gap dimensions and standard deviations for fixed dental prosthesis retainers and single-crown copings were 25 +/- 29 and 13 +/- 12 microm, respectively. The type of restoration showed a significant influence (P < 0.001) on the marginal gap. The location of the abutment tooth (P < 0.001) and the measurement location (P < 0.001) exhibited significant influence on marginal gaps of fixed dental prosthesis retainers while no influence on single-crown copings could be detected. The highest marginal gaps were found at the palatal surface of the incisor and canine of the 14-unit fixed dental prosthesis retainers. Fourteen-unit fixed dental prosthesis showed significantly higher marginal openings than single crowns fabricated under the same conditions. However, both restorations showed clinically acceptable marginal openings.


PMID: 18976261

DOI: 10.1111/j.1365-2842.2008.01908.x

Other references

Montgomery, G.G., 1964: Tooth eruption in preweaned raccoons. Ages of raccoons (Procyon lotor) less than 110 days old may be estimated by eruption of some deciduous and permanent teeth. Deciduous first, second, and third incisors erupt at 1 month; deciduous second, third, and fourth premolars at 1.5 months;...

Partridge, R.W.; Reed, M.C., 1980: Alcohol and drug problems in the workplace. Journal of Psychedelic Drugs 12(1): 71-72

Davison, K., 1958: Tophaceous gout in a 17-year-old male. Postgraduate Medical Journal 34(398): 651-653

Anonymous, 2016: NACCT Abstracts 2016. Clinical Toxicology 54(8): 659-811

Schröter, G.; Maier, J., 1974: A quantitative study of Bacteroides corrodens and similar bacteria in human tonsils. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Erste Abteilung Originale. Reihe A: Medizinische Mikrobiologie und Parasitologie 226(3): 355-363

Vrabec, J.T.; Simon, L.M.; Coker, N.J., 2007: Survey of Ménière's disease in a subspecialty referral practice. To define the prevalence of definite Ménière's disease (MD) among patients presenting with characteristic symptoms and examine the utility of published diagnostic guidelines. Retrospective review in an academic referral practice. The preval...

Vylegzhanin, A.F., 1973: Diagnosis of vibriosis in fish. Freshwater and marine fishes infected with Vibrio anguillarum and V. caspii had characteristic haemorrhagic lesions on the body, fins and gills, and in the viscera. Diagnosis was by isolation of vibrio from spleen, kidneys, liver and intestines. V...

Zhou, K.M.; Kohlhaw, G.B., 1990: Transcriptional activator LEU3 of yeast. Mapping of the transcriptional activation function and significance of activation domain tryptophans. The LEU3 protein of yeast activates a number of genes in the branched chain amino acid pathways. Native LEU3 is modulated by .alpha.-isopropylmalate, an intermediate in leucine biosynthesis. .alpha.-Isopropylmalate is needed for transcriptional ac...

Bell, Charles G., 1948: Mechanistic replacement of purpose in biology. The materialistic method of explanation discovers new determining agents, but upon examination metaphysical (purposive) relationships are required to connect the agents to the phenomena they determine, and a transcendental superstructure is requir...

S.Y.n-Gui; L.X.n-Rong;; Z.Z.i-Shan; L.Y.n, 2012: Carbon fixation of cyanobacterial–algal crusts after desert fixation and its implication to soil organic carbon accumulation in desert. Enhanced carbon fixation in soil crusts may facilitate the restoration of damaged ecosystems, but this requires greater knowledge of carbon fixation patterns and mechanisms. We measured the net photosynthetic rate (Pn) and estimated annual carbon...