Marginal adaptation and fracture strength of endocrowns manufactured with different restorative materials: SEM and mechanical evaluation.

Endocrowns were manufactured using different restorative materials to evaluate the marginal adaptation and fracture strength. Fifty endodontically treated mandibular first molar teeth were divided into five groups (n = 10). Endocrowns were obtained from lithium disilicate glass ceramic ingots by heat-press technique (Group e.

Load Transfer Characteristics of Three-Implant-Retained Overdentures with Different Interimplant Distances.

Purpose: Implant-retained overdentures are the first choice of rehabilitation for edentulous mandibles. Bone morphology and anatomical landmarks may be influenced by the location and angulation of implants and distances between the implants. The purpose of this study was to investigate stress distribution characteristics and to compare stress levels of three different attachment designs of three-implant-retained mandibular overdentures with three different interimplant distances.

Color stability of denture acrylic resins and a soft lining material against tea, coffee, and nicotine.

Purpose: The purpose of this study was to investigate the effect of four solutions [saliva (control group), saliva+tea, saliva+coffee, saliva+nicotine] on the color of different denture base acrylic resins (heat-polymerized, injection-molded, autopolymerized) and a soft denture liner.

Materials And Methods: Twenty specimens from each type of test material were prepared (2.5 mm diameter, 2 mm thickness).

Urine products of bone breakdown as markers of bone resorption and clinical usefulness of urinary hydroxyproline: an overview.

Purpose: The purpose of this study is to review the urine products of bone breakdown as markers of bone resorption and usefulness of urinary hydroxyproline.

Data: Related researches published in 1985 - 2000 were systematically reviewed.

Results: Bone markers could be used for early diagnosis of bone metabolic diseases.

Stress distribution of post-core applications in maxillary central incisors.

The purpose of this study was to evaluate the stress distribution in a maxillary central incisor restored with various post-core applications. The study used a three-dimensional finite element method. The tooth was assumed to be endodontically treated with a porcelain crown.

The effect of length and concentration of glass fibers on the mechanical properties of an injection- and a compression-molded denture base polymer.

Statement Of Problem: Fiber-reinforcement has been used to overcome the mechanical limitations of denture base polymers. One major difficulty in the use of fiber reinforcement has been the addition of fibers during conventional processing methods.

Purpose: This study evaluated the effect of various lengths and concentrations of chopped E-glass fiber-reinforcement on the transverse strength, modulus of elasticity, and impact strength of injection and compression-molded polymethyl methacrylate based denture base polymer.

Water sorption, solubility and dimensional changes of denture base polymers reinforced with short glass fibers.

The aim of this study was to determine water sorption, solubility and dimensional stability of injection and compression-molded polymethyl methacrylate based denture base polymer that was reinforced with various concentrations and lengths of E-glass fibers. For water sorption and solubility, 20 test groups with different fiber contents and lengths of fibers were prepared. Test specimens without fibers were used as a control.