the effect of inter-implant distance on retention and resistance of implant-tissue-supported overdentures is lacking in the literature. an in vitro study was performed to evaluate this effect for mandibular implant-tissue-supported overdentures retained by two ball attachments.an acrylic cast of an edentulous mandible was fabricated. three pairs of implants were symmetrically placed at both sid...

implant-supported craniofacial prostheses are made to restore defective areas in the face and cranium. this clinical report describes a technique for fabrication of an orbital prosthesis with three adjacent implants in the left lateral orbital rim of a 60-year-old woman. selection of appropriate attachment system (individual magnetic abutments versus bar-clip attachment) for implant-supported o...

background and aims. in contrast to prepared natural dentin abutments, little is known concerning factors influencing the retention of fixed prostheses cemented to implant abutments. the aim of this study was to investigate the effect of implant abutment height on the retention of single castings cemented to wide and narrow platform implant abutments. materials and methods. thirty-six parallel-...

precise registering and transferring of the selected path of insertion and withdrawal of removable, partial dentures is a critical step in designing and fabricating their framework and determining the retention, stability, and support of the completed prosthesis. many authors have addressed this issue in their studies. in this study we present a new technique for registering and reproducing par...

objective: retention and resistance of the implant-tissue supported overdenture may be affected by the type of attachment. the aim of this research was to compare the retention and resistance of nobel biocare ball (nbb), nobel biocare bar and clip (nbbc) and sterngold era red (erar) attachments on an implant-tissue supported overdenture model. materials and methods: the attachment samples were ...

objective: considering the fact that several bonding agents are available in market, clinical evaluations are required to find the durability of the sealants after using bonding agents. the purpose of this study was to compare the durability of the fissure sealant after applying two kinds of dentin bonding materials, adhese and excite. materials and methods: in this clinical study sample group ...

objective: there is no definitive data on the strength of glass fiber and cast posts with different length. this in vitro study was designed to investigate and compare the effect of length on the retentive strength of glass fiber and cast posts. materials and methods: sixty recently extracted intact maxillary canine teeth were cut 1mm above the cej. the specimens were endodontically treated and...

Despite ≤significant advances in dental therapeutics, there are patients for whom no reasonable treatment is available that will reliably restore or maintain their existing dentition. The causes for future edentulism include untreatable periodontal disease, advanced caries, failing root canal therapy, inadequate numbers of teeth to support a fixed prosthesis, or a history of failed previous reh...

The purpose of the present paper is to review available information on the methods of enhancing retention of maxillary obturators. A maxillofacial prosthesis used to close, cover, or maintain the integrity of the oral and nasal compartments resulting from a congenital, acquired, or developmental disease process, i.e. cancer, cleft palate, osteoradionecrosis of the palate. The prosthesis facilit...