Effects of cement bases on the stresses in amalgam restorations.

نویسندگان

  • J W Farah
  • J A Hood
  • R G Craig
چکیده

A computerized dental model was used to study the stress induced in a Class 1 amalgam restoration when supported by bases of varying materials and thickness. Under the same load, the maximum tensile stresses and deflections in the amalgam restoration increased at least threefold with a zinc oxide-eugenol base as compared with a ZnPO4 cement base.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effect of cement base thicknesses on MOD amalgam restorations.

The placement of intermediary cement bases under deep preparations for amalgam restorations is a recommended procedure in restorative dentistry. The base is of low thermal conductivity and thus protects the pulp from thermal shock.1 Bases should also possess sufficient strength to withstand the forces of condensation and mastication transmitted through the amalgam restoration.2'3 The effect of ...

متن کامل

Shear bond strength of Composite / Amalgam restorations: Effect of using adhesive cement

Shear bond strength of Composite / Amalgam restorations: Effect of using adhesive cement Dr. M. Khoroushi *- Dr. M. Yeganehjo ** *Assistant Professor of Operative Dentistry & Dental Materials Dept., Faculty of Dentistry, Isfahan University of Medical Sciences. ** Dentist. Abstract Background and Aim: The aim of this study was to evaluate the shear bond strength (SBS) of composite/amalgam restor...

متن کامل

بررسی اثر کاربرد سمان چسبنده بر ریزنشت حد فاصل دو ماده آمالگام و کامپوزیت

Background and Aim: Patients always complain about metallic color of amalgam restorations. Covering amalgam by composite can solve this problem. Since polymerization shrinkage is a serious shortcoming in composites, application of the combined amalgam and composite restoration is one of the methods to reduce leakage in the cervical margins of posterior restorations. The aim of this invitro stud...

متن کامل

Comparison of antibacterial activity of glass-ionomer cement and amalgam in class two restorations by Streptococcus mutans count analysis at fixed intervals: an in vivo study.

AIM The purpose of the present study was to determine the influence of glass ionomer cement and amalgam restoration on the level of Streptococcus mutans in the interproximal plaque at periodic intervals and also to compare these values. MATERIALS AND METHODS Seventeen adult patients having two proximal carious lesions on any quadrant of the jaw (either opposing or contralateral) were selected...

متن کامل

Microleakage and Micrographic Evaluation of Composite Restorations with Various Bases over ZOE Layer in Pulpotomized Primary Molars

OBJECTIVE Zinc oxide eugenol (ZOE) under composite restorations should be covered with a suitable material in order to prevent the harmful effect of ZOE on the composite. The aim of this in vitro study was to evaluate microleakage of composite restorations in pulpotomized primary molars with different bases for covering the ZOE layer and to assess the distance between different layers. MATERI...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Journal of dental research

دوره 54 1  شماره 

صفحات  -

تاریخ انتشار 1975