Influência do acesso endodôntico, da profundidade da lesão e do uso de dessensibilizantes na resposta a dor dentária

Abstract

Dentin hypersensitivity (DH) is a condition with high prevalence and incidence rates, which influences the quality of life of the world population. In this sense, it is important to better understand the relationship between pain in teeth and NCCLs, in addition to proposing a treatment in the HD phase and for deeper NCCLs that require endodontic treatment. Chapter 1: to evaluate, by means of a randomized clinical study, the efficacy of different concentrations of potassium oxalate (5 and 10%) in the relieving of DH, after a protocol of four sessions. Chapter 2: to evaluate, by means of a observational the effects of NCCL dentin depth and thickness on the response to dental pain when clinical diagnostic tests were applied. Chapter 3: evaluate by means of a in vitro the flexion angle of the instrument, the fracture resistance of the teeth, prepared areas, over prepared and the unprepared areas, after different endodontic access in teeth with NCCL. After analyzing the results, it can be concluded that to evaluate, by means of a randomized clinical study, the efficacy of different concentrations of potassium oxalate (5 and 10%) in the relieving of DH, after a protocol of four sessions. tooth with NCCL up to 2mm depth presents similar levels of pain for: dentin hypersensitivity, pulp and periradicular tissue independent to NCCL depth, however, lesions with ≤1.0mm-depth showed greater remain detin thickness in tomographic findings. Conservative access in teeth with NCCL can result in a more flexion angle of the file, over prepared showed worse instrumentation in middle third (bucclingual/ mesiodistal) than tradicional access, but the teeth became more resistant to fracture. In this way, it is possible to present the management of HD and deep NCCLs that require endodontics treatment, in addition to better understanding the diagnosis of teeth at different depths.