Sixty-month comperative evaluation of a glass hybrid restorative and a composite resin in non-carious cervical lesions of bruxist individuals.

"Declarations Ethics approval and consent to participateStudy protocol was approved by the University’s local ethic committee. Written informed.consent was obtained from all the participants. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding Open access funding provided by the Scientific and Technological Research Council of Türkiye (TÜBİTAK)."

"This study was designed as a single-center, split-mouth, double-blind and randomized controlled clinical study carried on patients having bruxism. Ethical considerations were addressed by confirmation of the study protocol by the local ethics committee of the university under number KA-16020. The study was also registered to ClinicalTrials.gov with the ID NCT03713827. Non-hospitalized bruxist patients meeting the inclusion criteria with at least two NCCLs situated on the buccal surfaces of the teeth and self-reported chronic bruxism condition with coexistent clinical symptoms of bruxism were included in this study. The teeth were included if they had occlusal contact. The patients were excluded from the study if they had; 1) chronic periodontitis, 2) intensive medical history (severe systemic diseases or disabilities that may prevent them from attending to the recalls e.g., severe diabetes, cancers, cardiovascular diseases, etc.), 3) unacceptable oral hygiene (oral hygiene index > 0 indicating any visible plaque at any tooth [] and/or inflammation on adjacent gingiva (Gingival Index > 0 indicating bleeding on probing at any tooth) [], 4) high caries activity (3 or more new caries lesions within the last 36 months) and if their NCCLs were previously restored, on mobile teeth or in contact with removable dentures. The assessment of high caries activity was based on recent dental examinations, patients' previous radiographs and their self-reports. Since all patients received their previous dental treatments at our University Hospital, their previous dental records and history was checked. Only the lesions requiring treatment were qualified as new caries [, ]. Twenty-five patients with the mean age of 55 ± 8.3 of years old (ranged between 42–72 years), meeting previously described inclusion criteria were enrolled in this study. After clearly explaining the objective, clinical procedure and study-related risks, written consents of the patients were obtained."