Restorations of 98 implant-supported single crowns in anterior maxillary area were divided into 5 groups: zirconia abutment, titanium abutment, and gold/gold hue abutment with zirconia coping, respectively, and titanium abutment with metal coping as well as gold/gold hue abutment with metal coping. A reflectance spectrophotometer was used to evaluate the color difference between the implant cro...

STATEMENT OF PROBLEM Excessive stress on abutment teeth adjacent to a maxillary resection defect during loading of partial denture obturator frameworks may shorten the life of the teeth. PURPOSE The aim of this study was to photoelastically compare the forces exerted on the supporting structures of abutment teeth in 3 differently sized surgical resections with removable partial denture design...

aAffiliate Faculty, Department of Restorative Dentistry, University of Washington; Private practice, Bellevue, Wash. bProfessor, Department of Restorative Dentistry, University of Washington. (J Prosthet Dent 2013;109:272-274) 1 Plate and guide rod engage abutment screw head on cast, with plate lowered and oriented to buccal of adjacent teeth. Cement-retained implant restorations have been repo...

PURPOSE The purpose of this study was to investigate the effects of implant tilting and the loading direction on the displacement and micromotion (relative displacement between the implant and bone) of immediately loaded implants by in vitro experiments and finite element analysis (FEA). METHODS Six artificial bone blocks were prepared. Six screw-type implants with a length of 10 mm and diame...

BACKGROUND Fractured connections between implants and implant abutments or abutment screws are frequently encountered in a clinical setting. The purpose of this study was to investigate fracture strength using a torsion test at the interface between the implant and the abutment. METHODS Thirty screw-type implant with diameters of 3.3, 3.8, 4.3, 5.0, and 6.0 mm were submitted to a torsion test...

Currently, there are several possibilities of abutments connections in dental implants. The most common design in use is the external hexagon connection, which, besides the function of transmitting torque at surgical placement, also works as an antirotational mechanism and orientation of the abutment for single tooth prostheses. Several researchers have suggested that screw joint stability is d...

Interdental papillae regeneration remains a challenge in implant dentistry in cases in which papillae are lost following tooth extraction. This report presents an implant case with missing 1st and 2nd premolars and total papillary loss. We performed immediate provisionalization to the first premolar implant with a temporary abutment and crown, whereas the second premolar was submerged. Crown co...

Implant supported dental prostheses are increasingly used in practice. The aim of this narrative review is to present the influence transmucosal surface prosthetic abutment and implant on peri-implant tissue. article describes causes bone loss around implant. Moreover, properties different materials compared discussed. advantages, disadvantages, biomechanical concept implant-abutment connection...

The purpose of this study is to numerically analyze a 3D model an implant under fatigue loads. A bone and V shape were modeled using SolidWorks2008 software. In order obtain exact model, the was assumed as linear orthotropic material. Mechanical loads applied in terms fastening torque abutment mastication force at top crown. tightened into by applying 35 N.cm causing tensile stress within screw...

Background To carry out a systematic literature review of the causes of preload loss of the abutment screws, of internal and external connection implants, tightened to different torque values and subjected to cyclic loading. Material and Methods A systematic search was conducted in PubMed, EMBASE, and Cochrane Library databases with reference to in vitro studies in which internal and external...