Avaliação clínica e imagiológica do estado pulpar em dentes com lesão cervical não cariosa e hipersensibilidade dentinária cervical

Abstract

Non-carious cervical lesions (NCCL) are formed by the loss of dental structure in the cervical third of tooth not associated with caries disease and can cause problems such as dental hypersensitivity cevical (DHC), plaque retention increasement, loss of aesthetics and impairment of pulp vitality. There are many studies in literature of the cause, diagnosis and treatment of teeth with NCCL and DHC, however there is still nothing about the relationship between their presence and the state of the tooth's pulp tissue. The objective of the present study was to analyze dental pain and pulp status in NCCL with DHC. Besides evaluating the relationship between clinical and radiographic signs of NCCL teeth presenting DHC of the dentin remnant from the vestibular wall (between the end of the lesion and the beginning of the coronary chamber). Sixty teeth of patients presenting NCCL and DHC went through clinical tests of: percussion (vertical and horizontal) and cold termal pulp sensitivity, to analyze the present of dental pain. Besides radiographic examinations (xR), a computerized tomography (CT) was performed to evaluate the presence of alterations and to quantify the thickness of the remaining dentin at the vestibular wall of the tooth. After collection, the data was compared statistically with a significance level of set at 5%. No statistical difference was found when comparing results of two groups in relation to the presence of pain in percussion tests: vertical (p = 1,000) and horizontal (p = 0,237). Neither as to the level of DHC (p=0,266) and pulp sensitivity (p=0,356) and the presence or absence of radiographic changes (table 4) in the coronary chamber (p=1,000), root canal (p=1,000) and periapex (p=0,068). There was statistical difference only between the thickness of dentin remaining at the vestibular teeth wall when comparing results of two groups (p=0,035). Non-carious cervical lesions teeth with depth ranging from 0 to 3.0 mm and with presence of DHC showed clinically presence of inflammation of the pulp tissue and absence of tertiary dentine formation at clinical, radiographic exams. However, TC exams presented tertiary dentin above or below the site of the lesion in root canal.