Paper Topic:

is there a benefit in bonding amalgam restorations to remaining tooth structure

: is there a benefit in bonding amalgam restorations to remaining tooth structure

p Specifications : 9 Pages , 11 Sources , Oxford Style

: language use global references and not just American literature sources

The use of bonded amalgam in restoring the teeth began as early as the 1990 's when a few practitioners began to use certain substances to bond the amalgam restorations directly to the tooth . These practitioners began to bond the amalgam directly to the enamel and /or the dentin . The process of bonding amalgam to the tooth was fairly simple . First

, the cavity was prepared and the surface of the cavity was thoroughly cleansed , washed and dried . An etchant was applied to the surface of the cavity , and etching was done for certain period of time . Then , a bonding agent was applied to the surface of the prepared cavity . This bonding agent was chemically cured . After this , amalgam can be condensed into the cavity . The resin can whilst curing , bond the magma to the tooth . A mechanical interlocking between the amalgam and the resin would develop . Such restorations would have a lot of advantages over conventional amalgam restorations . However , the evidence available currently regarding bonded amalgam is rather insufficient , as the results of long-term studies are lacking . Studies for a period of two years following the insertion of bonded amalgam have been conducted , and benefits predicted on a long-term basis needs to be thoroughly tested (Bryant , 1998

The use of bonding agent for dental amalgam was first thought of immediately after composite resins were successfully bonded clinically One of the most frequently utilized agents for bonding amalgam to the tooth structure is 4-META . This enables bond shear strength of about 10 MPa . On the other hand , if the same agent is utilized to bond composite resins to the tooth structure , a bond strength of about 20 MPa is achieved (Graig , 2002 . One of the main reasons why dental researchers began to work on the use of bonded amalgams for clinical use was because the newer restorative material have not been very successful in replacing dental amalgam . During the early days when bonded amalgams were initially tested , researchers were able to notice that bonding helped to provide certain benefits against unbonded amalgams (Zbynek 2002

Bonded amalgam restorations claim several benefits :-

The retention form of a cavity may be improved following use of bonded amalgam (Bryant , 1998 . However , some researchers feel that the bond retention offered by bonding amalgam be very less or even negligible This is because the bonding agent may not adopt in a proper manner to the surface of the cavity or the amalgam (Graig , 2002

There is no much of need to cut the tooth extensively and to prepare several retentive features such as grooves , dove tails , undercuts , etc

As the tooth is prepared conservatively , the resistance form of the tooth is improved . This means that the restoration can tolerate stresses better that could fracture the cusps . The clinical evidence available for this...

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