Avaliação do desempenho clínico de restaurações cervicais de lesões não-cariosas em dentes com e sem desgaste oclusal efetuadas por alunos do MIMD da UCP

Abstract

Introduction: Non-carious cervical lesions are defined by the loss of tooth structure related to non-carious processes. Despite its questionable aetiology in literature, it is believed to be caused by many factors that often arise combined and which can act in synergy. It is considered that abrasion, erosion and abfraction have key roles in the origin of these conditions. The main forms of treatments use glass ionomer cements and composite resins with adhesive systems. However, such restorative treatments, do not demonstrate long-term effectiveness due not only to the characteristics of these lesions, but also the properties of the materials themselves. Objectives: This study aims to assess the clinical performance of restorations in non-carious cervical lesions using composite resins and glass ionomer cements in terms of aesthetic, functional and biological performance and their association with the presence or absence of occlusal wear facets. Materials and Methods: A total of 32 vital teeth with non-carious cervical lesions, with and without occlusal wear facets were restored, using a nanohybrid composite resin (Synergy D6 (Coltene®)) and a conventional glass ionomer cement (Ketac ™ Fil Plus Aplicap ™ (3M ESPE)), randomly. Reviews were made at baseline and after 3 months-recall, carried out using the USPHS criteria. Statistically, the results were evaluated using the Wilcoxon test. Results: After 3 months, 6 restorations were lost. The results in term of Alfa score for composite and glass ionomer cement were, respectively: retention (100%; 83.3%), marginal discoloration (85.7%; 75%), marginal adaptation (50%; 58.3%), wear (92.9%; 75%), post-operative sensitivity (71.4%; 83.3%) and secondary caries (100%, 100%). By analysing the presence/absence of wear facet, it was found that the performance of both materials was similar, meaning that this feature didn’t influence significantly the results. Conclusion: Both materials showed similar performances, but in general, glass ionomer cement showed slightly higher quality losses.

Date of Award	29 Jul 2015
Original language	Portuguese
Awarding Institution	Universidade Católica Portuguesa
Supervisor	António Manuel Guerra Capelas (Supervisor) & Vânia Alves Barros (Co-Supervisor)