Objective: To evaluate the clinical outcomes of IPS e.max Press ceramic inlay/onlay restorations for Class II tooth structure loss in posterior teeth.
Subjects and Methods: This uncontrolled clinical intervention study included 34 teeth in 34 patients with Class II tooth structure loss in posterior teeth. Participants were recruited using convenience sampling, and the affected teeth were restored with IPS e.max Press ceramic inlays/onlays from December 2022 to July 2023. Clinical outcomes were evaluated 3 months after cementation according to the United States Public Health Service (USPHS) and World Dental Federation (FDI) criteria.
Results: At 3 months after cementation, 100% of restorations were rated as clinically acceptable according to the USPHS criteria. Marginal discoloration, anatomical form, marginal adaptation, and secondary caries were rated Alpha in 100% of cases. According to the FDI criteria, 100% of restorations were clinically acceptable; proximal contact/food impaction was rated excellent in 97.1% of cases, patient satisfaction in 88.2%, and postoperative hypersensitivity and tooth vitality in 94.1%. The overall success rate was 100%, with no failures recorded.
Conclusion: IPS e.max Press ceramic inlay/onlay restorations for Class II tooth structure loss in posterior teeth achieved clinically acceptable outcomes at 3 months according to the USPHS and FDI criteria, with favorable preliminary esthetic, functional, and biological performance. Further studies with longer follow-up periods are warranted to evaluate long-term clinical outcomes.