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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
