Comparison between Direct and Indirect Composite Resin Restorations

بسم الله الرحمن الرحيم

Comparison between direct and indirect composite restorations

Done by: Waad Khayat.

Out Lines

• Review (direct, semi direct and indirect composite resin). - techniques. - indications. - advantages and disadvantages. - failure rate.

• Comparison between direct and indirect composite resin for the following properties:

- bond strength(study 1). - diametral tensile strength (study 2).

• Conclusion.• References.

What has caused the transition from metallic to tooth colored restorative materials?

• The growing demand for esthetic restorations.

• The great improvement of the materials and their properties.

• The change of the treatment philosophy to

more conservative approach.

Review Review ¹¹

Objective: To present the current data available about

many different types of direct and indirect tooth colored restorative materials including composite resin.

1- Pascal Mange. Composite resin and bonded porcelain:the post amalgam Era. CDA Journal. 2006; 34(2):135-147.

Direct CompositeIndirect CompositeSemi direct Composite

techniqueIntraorally, 1 visit.-incremental technique.-sandwich technique.

-restoration is fabricated on a jypsum model. -Cured in small furnace.-cementation.

-fabricated intraorally - photo thermic curing in small furnace -cementation

indication-small to medium class I and II cavities.-class III, IV and V.

serial large restorations with limited cuspal coverage.

limited number of teeth with favorable mouth access .

advantages-Satisfied properties if applied carefully.

-better esthetics. -more effective contact points.-requires less clinical time.

-better wear resistance. -better dimensional stability .-better marginal adaptation. - Single visit.

disadvantagePolymerization shrinkage.Marginal leakage.Postoperative sensitivity.

-multiple visits.-higher costs.-affected by the type of cement used.

-multiple extra oral steps-affected by the type of cement used.

Review Review ¹¹

Failure rate:

1- Pascal Mange. Composite resin and bonded porcelain:the post amalgam Era. CDA Journal. 2006; 34(2):135-147.

Review Review ¹¹

1- Pascal Mange. Composite resin and bonded porcelain:the post amalgam Era. CDA Journal. 2006; 34(2):135-147.

Study 1: Study 1: Bond strength evaluation of direct and indirect composite restorations ² :

Objective:To assess the bond strength of both direct and

indirect composite restorations to dentine.

2-Lopes M B,Consani S, Sinhoreti M A, Salvio L A , Sobrinho L C. Bond strength evaluation of direct and indirect composite restorations. Arquivos em Odontologia.2006;42:257-336.

Storing in water for 24 h measuring bond strength

Study 1:Study 1: Bond strength evaluation of direct and indirect composite restorations ² :

Method:

Study 1:Study 1: Bond strength evaluation of direct and indirect composite restorations ² :

Results :

13.16 10.18 6.81

bond strength

2-Lopes M B,Consani S, Sinhoreti M A, Salvio L A , Sobrinho L C. Bond strength evaluation of direct and indirect composite restorations. Arquivos em Odontologia.2006;42:257-336.

Study 1:Study 1: Bond strength evaluation of direct and indirect composite restorations ² :

Conclusion:

11--

different bond strength for indirect composite

to tooth structure.--22

2-Lopes M B,Consani S, Sinhoreti M A, Salvio L A , Sobrinho L C. Bond strength evaluation of direct and indirect composite restorations. Arquivos em Odontologia.2006;42:257-336.

study 2:Diametral tensile strength of composite resins submitted to different activation techniques ³ :

Objective:Objective:To compare the Diametral tensile strength (DTS)

of four types of composite,two direct and two indirect materials, cured with different techniques.

3-Casselli DSM,Worschech C, Paulillo L A, Dias C T. Diametral tensile strength of composite resins submitted to different activation techniques. Braz Oral Res.2006;20(3):214-8.

Method:Method:

study 2:Diametral tensile strength of composite resins submitted to different activation techniques ³ :

storing in artif.saliva(1 week)

measuringDTS

study 2:Diametral tensile strength of composite resins submitted to different activation techniques ³ :

 Results :Results :

The range of DTS was 32-70MPa

3-Casselli DSM,Worschech C, Paulillo L A, Dias C T. Diametral tensile strength of composite resins submitted to different activation techniques. Braz Oral Res.2006;20(3):214-8.

study 2:Diametral tensile strength of composite resins submitted to different activation techniques ³:

 Conclusion:Conclusion:

1-

2-

3-Casselli DSM,Worschech C, Paulillo L A, Dias C T. Diametral tensile strength of composite resins submitted to different activation techniques. Braz Oral Res.2006;20(3):214-8.

• Direct composite Polymerization shrinkage leakage, discoloration, sensitivity failure.

• Indirect technique -Minimize polymerization shrinkage. -Insignificant difference of properties in comparison to direct materials. -Affected by type and thickness of the cement.

• Direct composite that is fabricated carefully, respecting the correct

indications for this technique, will provide properties higher or equal to indirect one.

ConclusionConclusion

ReferencesReferences::

1- Pascal Mange. Composite resin and bonded porcelain:the post amalgam Era. CDA Journal. 2006; 34(2):135-147.

2-Lopes M B,Consani S, Sinhoreti M A, Salvio L A , Sobrinho L C. Bond strength evaluation of direct and indirect composite restorations. Arquivos em Odontologia.2006;42(4):257-336.

3-Casselli DSM,Worschech C, Paulillo L A, Dias C T. Diametral tensile strength of composite resins submitted to different activation techniques. Braz Oral Res.2006;20(3):214-8.

Thank You