Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Journal of Achievements in Materials and Manufacturing Engineering

1 2017

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: cement-retained crown

Sortuj według:

Ogranicz wyniki do:

Assesment of the binding strength of selected bonding systems used for cementation of implantoprosthetic suprastructures

Malara P., Pasieka A., Paluch K., Sobolewska K.

Journal of Achievements in Materials and Manufacturing Engineering

2017

Vol. 80, nr 1

18--24

Purpose: of this paper is the assessment of the strength of binding of selected bonding systems used for fixing prosthetic works. The characteristics of cement materials used for settling the crowns on the implant abutments were also included. The study has presented the evaluation of the binding strength of selected bonding systems used for fixed prosthetic works. Design/methodology/approach: Metal substructures of single-unit cement-retained crown were designed and manufactured using CAD/CAM technology. Created wax models were changed to metal substructures and settled on the abutments attached to implant replicas with a group of commonly used dental cements. The binding strength was tested on Zwick Z 100 static tensile testing machine. Findings: It was found that MaxCem is the strongest material among the tested cements which can withstand the force of 175 N. Double cured cements containing the resins may withstand very high tensile strengths which can be a problem when the crown needs to be taken off. The bonding strength of the dental cements can be influenced by the width of the film, its thickness, even distribution of the cement between the crown and the abutment and the setting time. The higher the viscosity of the cement, the lower the retention of the crown on the implant abutment. Research limitations/implications: In order to limit the designing and manufacturing errors the whole technological process should be carried out with CAD/CAM technology. The cement should be evenly distributed inside the metal cup to prevent from creation of empty spaces between the crown and the abutment. It may be necessary to design and manufacture special holders to maintain the samples in the testing machine to minimalize the risk of creation initial tensile forces. Practical implications: The research gives an insight into the possibilities of choosing the cement for bonding the crown onto the implant abutment preserving the connection between the bone and the implant in case of necessity of the removal of the crown. Originality/value: The research is focused on the binding strength of the cements most commonly used for settling the crowns on the implant abutments. It helps with clinical decision making when choosing the proper cement for these purposes.