Zobrazeno 1 - 10
of 121
pro vyhledávání: '"William H. Douglas"'
Publikováno v:
Journal of Biomechanics. 39:339-347
Plaque rupture plays a role in the majority of acute coronary syndromes. Rupture has been associated with stress concentrations, which are affected by tissue properties and anatomy. In this study rupture was not approached as an acute syndrome, but r
Publikováno v:
Dental Materials. 21:252-261
Objectives : Fracture is a major reason for clinical failure of dental restorations. Many clinical fractures are likely to be preceded by a slow sub-critical crack propagation. The purpose of this study was to determine slow crack propagation in a re
Publikováno v:
Journal of Materials Science. 40:505-509
Over the past few years biomimetic synthesis [1–3] of artificial bone materials [4] such as hydroxyapatite [HAp], carbonated hydroxyapatite and fluoroapatite have gained increasing attention and some researchers have tried to prepare the apatite co
Autor:
Ralph DeLong, William H. Douglas, James Q. Swift, Kai Nan An, Michael D. Rohrer, Ching Chang Ko, James S. Hodges, Erik L. Ritman
Publikováno v:
Journal of Dental Research. 82:585-591
The universally accepted concept of delay-loaded dental implants has recently been challenged. This study hypothesizes that early loading (decreased implant healing time) leads to increased bone formation and decreased crestal bone loss. We used 17 m
Publikováno v:
Biomaterials. 24:3087-3094
The hydroxyapatite (HAp)/gelatin (GEL) nanocomposite was prepared through the coprecipitation and then cross-linked by using glutaraldehyde (GA). From FT-IR measurement the spectral features for amide bands and phosphate bands were severely modified
Autor:
Ralph DeLong, Myung Chul Chang, William H. Douglas, James S. Hodges, C. C. Liu, Ching Chang Ko, Wook Jin Seong, Kai Nan An
Publikováno v:
Journal of Biomechanics. 36:1209-1214
Information is scarce about Young's modulus of healing bone surrounding an implant. The purpose of this preliminary study is to quantify elastic properties of pig alveolar bone that has healed for 1 month around titanium threaded dental implants, usi
Publikováno v:
Journal of Dental Research. 82:438-442
Three-dimensional imaging of dental tissues will have a major impact in dentistry if the images are accurate. The purpose of this study was to measure the accuracy and precision of a system for creating three-dimensional images of dental arches. Usin
Publikováno v:
Journal of Dentistry. 31:89-95
Objectives . Chipping and bulk fracture are major contributors in clinical failures of composite restorations. Fracture toughness ( K Ic ) quantifies susceptibility for fracture, but experimental determination is complicated. It would be beneficial f
Publikováno v:
Journal of Dental Research. 81:338-343
A helical axis describing mandibular motion can be calculated from two distinct positions of the mandible; however, as these positions come closer together, calculation errors increase. This study investigated the effects of errors in the calculated
Publikováno v:
Journal of Materials Science: Materials in Medicine. 13:557-565
This study explores the interaction between bioactive glasses and dentin from extracted human teeth in simulated oral conditions. Bioactive glasses in the Na(2)O-CaO-P(2)O(5)-SiO(2) and MgO-CaO-P(2)O(5)-SiO(2) systems were prepared as polished disks.