geoscience.net logo
+ 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

Influence of Connector Width on the Stress Distribution of Posterior Bridges under Loading


, : Influence of Connector Width on the Stress Distribution of Posterior Bridges under Loading. Journal of Dentistry 8(2): 67-74

In all ceramic fixed partial dentures the connector area is a common fracture location. The survival time of three-unit fixed partial dentures may be improved by altering the connector design in regions of maximum tension. The purpose of this study was to determine the effect of buccolingual increase of the connector width on the stress distribution in posterior fixed partial dentures made of IPS Empress 2. To simulate the anatomical condition, we used three-dimensional finite element analysis to generate. Three models of three-unit bridges replacing the first molar were prepared. The buccolingual connector width varied from 3.0 to 5.0 mm. Bridges were vertically loaded with 600 N at one point on the central fossa of the pontic, at 12 points along the cusp-fossa contact (50 N each), or at eight points along the cusp-marginal ridge contact (75 N each). Alternatively, a load of 225 N was applied at a 45º angle from the lingual side. Stress concentrations were observed within or near the connectors. The von Mises stress decreased by increasing connector width, regardless of whether the loading was applied vertically or at an angle. Within the limitations of this study, we conclude that increasing the connector width decreases the failure probability when a vertical or angled load is applied.

US$29.90

PMID: 21998811


Other references

Zunic-Bozinovski, S.; Lausevic, Z.; Krstic, S.; Jovanovic, N.; Trbojevic-Stankovic, J.; Stojimirovic, B., 2008: An experimental, non-uremic rabbit model of peritoneal dialysis. Peritoneal dialysis (PD) is a well established method of depuration in uremic patients. Standard dialysis solutions currently in use are not biocompatible with the peritoneal membrane. Studying effects of dialysate on peritoneal membrane in human...

Sun, D.; Hu, X.Z.; Coleclough, C., 1995: The clonal composition of myelin basic protein-reactive encephalitogenic T cell populations is influenced both by the structure of relevant antigens and the nature of antigen-presenting cells. Studies of experimental autoimmune encephalomyelitis (EAE) in rodents have revealed that encephalitogenic T cell lines reactive with myelin basic protein (BP) are frequently dominated by clones expressing a restricted T cell receptor repertoire. U...

Sawitza, I.; Lohfink, D.; Dienes, H.P.; Odenthal, M., 2000: TGF beta signalling in hepatic stellate cells during liver fibrogenesis. Pathology Research & Practice 196(6): 445

Ogden, G.R., 1986: Lymphoma of the oral soft tissues. British Dental Journal 161(1): 9-12

Devlesaver, P., 1974: Posterior oblique approach to the kidney. Journal D'urologie et de Nephrologie 80(12 Pt 2): 497-502

Chen; Reed; McWilliams, 1995: Resonant effects on electron-impact ionization of sodiumlike selenium. Physical Review. A, Atomic, Molecular, and Optical Physics 52(4): 2881-2884

Lopes, R.Iglesias.; Dénes, F.Tibor.; Padovani, G.; Sircili, M.Helena.; Srougi, M., 2014: Monti's principle in the treatment of congenital uterovesical fistula. Congenital uterovesical fistula is rare and generally associated with genital tract abnormalities derived from mullerian ducts or urogenital sinus. Management is usually challenging, and it involves vaginal reconstruction. A 15-year-old female pat...

Verheugt, F.W.A., 2013: Outcomes of positive randomised controlled clinical trials: double-blind or double vision? Editorial on Serebruany, Atar: 'Viewpoint: Central adjudication of myocardial infarction in outcome-driven clinical trials--common patterns in TRITON, RECORD, and PLATO?' (Thromb Haemost 2012; 108.3). Thrombosis and Haemostasis 108(3): 410-411

Schüller, J.; Walther, V.; Schmiedt, E.; Staehler, G.; Bauer, H.W.; Schilling, A., 1982: Intravesical ultrasound tomography in staging bladder carcinoma. The staging of bladder carcinoma is most important for treatment and prognosis. Transurethral ultrasound scanning was done with a rotating 6 MHz. transducer interchangeable with the optic of a 24F cystoscope. Intravesical ultrasound tomography and...

Niswender, G.D.; Juengel, J.L.; Silva, P.J.; Rollyson, M.K.; McIntush, E.W., 2000: Mechanisms controlling the function and life span of the corpus luteum. The primary function of the corpus luteum is secretion of the hormone progesterone, which is required for maintenance of normal pregnancy in mammals. The corpus luteum develops from residual follicular granulosal and thecal cells after ovulation....