Supervivencia a largo plazo y razones del fracaso en restauraciones clase III y clase IV directas de composites : Revisión de literatura.

Abstract

Introduction: Direct restorations suffer deterioration as a result of "wear and tear" and may be susceptible to secondary caries. Objective: To determine the long term survival and reasons for failure in direct class I II and class IV composite restorations. Materials and methods: The type of research is retrospective, cross sectional, descriptive and deductive in the search for bibliographies. Analysis and discussion of results: several authors claim that long term surv ival and the reasons for the failure of restorations are due to secondary caries due to lack of hygiene. Conclusion: The results of this investigation present a good result and one of the main reasons for failure is secondary caries and fractures of the re storations.