This article describes the intraoral preparation of healing abutments for use as prefabricated abutments for a cement-retained, implant-supported prosthesis. After the healing abutments are prepared, an impression is made with irreversible hydrocolloid, and the provisional restoration is fabricated indirectly. This technique is an easy and economical alternative for the fabrication of provision...

Presently, the general seismic fragility evaluation method for a bridge system composed of member elements with different nonlinear behaviors against strong earthquakes has been to evaluate at element-level. This study aims develop system-level that represents structural system. Because behavior bridges is generally divided into transverse and longitudinal directions, this evaluated in both dir...

The passive fit between prosthesis and implant is a relevant factor for screw joint stability and treatment success. The aim of this study was to evaluate the influence of vertical misfit in abutment-implant interface on preload maintenance of retention screw of implant-supported crowns. The crowns were fabricated with different abutments and veneering materials and divided into 5 groups (n = 1...

AIM To test in vitro the mechanical resistance, rotational misfit and failure mode of three original implant-abutment connections and to compare them to two connections between non-original abutments connected to one of the original implants. MATERIAL AND METHODS Three different implants with small diameters (3.3 mm for Straumann Roxolid, 3.5 mm for Nobel Biocare Replace and Astra Tech Osseos...

a new design for replacing a missing anterior tooth is described. in this article, a lingually fixed partial denture, its advantages, disadvantages, indication and contraindications have been explained. the ability of this design to replace a single missing central or lateral incisor is discussed.

Background: Bridges are one of the most critical parts a transportation network that may be damaged during earthquakes and it is necessary to have prediction model for bridge responses under seismic loads can extended other situations. Soil stiffness significantly affects load distribution when soil, piles, abutment, superstructure all act as combined system resist lateral loading on bridge. Me...