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6-year Longitudinal clinical Evaluation of NoncariousCervical Lesions of DifferentExtensions Restored With Bulk-fillor Conventional Resin Composite - Randomized Clinical Trial

Grant number: 23/08512-2
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Effective date (Start): November 01, 2023
Effective date (End): October 31, 2024
Field of knowledge:Health Sciences - Dentistry - Dental Clinics
Principal Investigator:Taciana Marco Ferraz Caneppele
Grantee:Beatriz Coelho Marques
Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Estadual Paulista (UNESP). Campus de São José dos Campos. São José dos Campos , SP, Brazil

Abstract

This randomized clinical trial evaluated the influence of the occlusogingival distance (OGD) of noncarious cervical lesions (NCCLs) on the clinical performance of a regular bulk-fill resin composite and a regular nanofilled resin composite. Materials and Methods: A total of 140 restorations were randomly placed in 77 participants by one operator. NCCLs were divided into four groups (n=35) according to OGD (1.5 mm±10% , or 3 mm±10%) and resin composites (Filtek Bulk Fill Posterior or Filtek Z350 XT) A two-step self-etch adhesive (Clearfil SE Bond) was applied following manufacturer instructions in all restorative procedures. Restorations were polished 1 week after placement. Clinical evaluation was performed at baseline (7 days), 6, 12, 18, 24 and 30 months, by two calibrated examiners, according to the modified US Public Health Service criteria evaluating fractures/retention, marginal staining, marginal adaptation, recurrence of caries, anatomic form, postoperative sensitivity, and surface texture. In this study the resotrations will be evaluated after 6 years. The Kruskal-Wallis test will be used for intergroup comparison in each followup; the Friedman analysis of variance, followed by the least significant difference test (multiple comparisons) will be used for intragroup comparison between baseline and follow-up times (±=0.05).

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