failures in composite restoration

Abstract

<h1>In recent years, the popularity of tooth colored restorative material has led to a rapid increase in the use of resins. This critical review paper is meant to be useful contribution to the recognition & understanding of problems related to the failures of composite restoration. This review categorizes the challenges as those related to the restorative materials, the dentist and the patients. In spite of the major improvements in both physical and mechanical characteristics following factors are still of major concern, such as improper case selection, isolation, wear resistance, cavity preparation, placement of composites, curing, finishing & polishing. Major problems associated with composites failures are polymerization shrinkage & contraction stress related to polymerization shrinkage, water sorption, solubility, discoloration of restoration (staining), elution of material from restoration, marginal failures, secondary caries, and fracture of the restoration, post-operative sensitivity, and micro-leakage.</h1>

Clinical Evaluation of Reasons for Immediate Composite Restoration Failure Placed by Dental Students: A Cross-sectional Study in Jordan

“…Second, one of the essential elements of proper bonding of composite resin restoration to tooth structure is appropriate field isolation and complete avoidance of moisture contamination [17,18]. The importance of such a factor can't be underestimated and it was the main reason for failed restorations (Cl II, Cl III, and Cl V) in our study, especially among fourth-year students.…”

“…First, applying composite restorations is a multi-step procedure that requires proper knowledge of the importance of the precise application of each step to avoid the cumulative effect of errors in each step [13,17]. In this study, the improper manipulation of the restoration (acid etching timing on enamel and dentin, proper washing, drying approach to both enamel and dentin) and the inappropriate placement technique (beveling, incremental layering, light curing) was the most frequent reason for restoration failure, which is attributed possibly to students' lack of experience, skills, and comprehensive knowledge [18,19]. This fundamental factor was associated with restoration failure placed by other undergraduates in several dental schools and studies [20 -22].…”

“…The authors noticed in the current study that the quality of the restoration placed by the students is related to the time frame. Resin composites are technique-sensitive materials, which means handling them as restorative materials mandate specific requirements [18,19,21]. The more time spent by students applying the restoration starting after cavity preparation and ending with polishing and finishing, the less debonding, or/and marginal discoloration of the restoration was identified.…”

Pengaruh Laju Pelepasan Fluor pada Resin Komposit Berfluor terhadap Kebocoran Tepi

“…3 Resin komposit merupakan salah satu restorasi pilihan yang sering digunakan untuk memenuhi tuntutan estetika karena dapat menggantikan struktur gigi yang hilang, memperbaiki warna dan kontur gigi sehingga dapat meningkatkan estetika, 4 serta mempunyai biokompatibilitas tinggi. 5 Resin komposit juga memiliki kekurangan, salah satunya yaitu dapat terjadi kebocoran tepi. 6 Kebocoran tepi ialah celah antara permukaan gigi dan resin komposit.…”

Evaluation of push-out bond strength of different concentrations of chitosan nanoparticles incorporated composite resin and eighth-generation bonding agent for class II restoration: An in vitro study

“…Despite several advantages of composite restorations, there are some drawbacks such as polymerization shrinkage, postoperative sensitivity, no antibacterial activity, marginal deficiencies, and secondary caries that affect the success of composite restorations, particularly in posterior complex restorations. [ 5 6 ] Therefore, further improvement of composite restorative materials is needed.…”