FACTORS INFLUENCING THE LONGEVITY OF COMPOSITE RESIN RESTORATIONS IN PATIENTS WITH SLEEP BRUXISM: A LITERATURE REVIEW

Abstract

This study aimed to analyze the factors that influence the longevity of composite resin restorations in patients with sleep bruxism, considering the clinical and material challenges involved in this context. The methodology consisted of an integrative and qualitative literature review conducted in the SCIELO, LILACS, and PUBMED databases, including articles published between 2020 and 2025 in Portuguese and English. The search used the following DeCS and MeSH terms: “Restauração em resina composta,” “Bruxismo do sono,” “Odontologia,” “Resinas compostas” (in Portuguese), and “Composite resin restoration,” “Sleep bruxism,” “Dentistry,” “Composite resins” (in English). Full-text studies that directly addressed the relationship between composite resins and the impact of sleep bruxism were included, while duplicate works, gray literature, and studies with divergent themes were excluded. The results showed that bruxism exerts excessive forces on restorations, leading to early wear, fractures, adhesive failures, marginal leakage, and aesthetic alterations. It was observed that the longevity of restorations depends not only on the intrinsic properties of the material but also on clinical factors such as proper adhesive technique, moisture control, adequate occlusal adjustments, and regular patient follow-up. It is concluded that the use of high-strength resins combined with protective devices, such as occlusal splints, represents an essential strategy to increase the clinical longevity of these restorations. Furthermore, the need for additional research aimed at developing more resistant materials and specific clinical protocols for patients with sleep bruxism is emphasized.