Non-carious cervical lesions (LCNC) are characterized by the loss of tooth structure
without the participation of microorganisms. Although its origin mechanism is still not well
understood, it is assumed that the incidence of horizontal forces from malocclusion can be
considered as one of its etiologies. In view of this, the objective of the present study was to
assess the prevalence of LCNC related to malocclusion in students of the Faculty of Dentistry
of the Federal University of Pará (UFPA). Thirty-nine students were selected and evaluated,
these undergoing anamnesis and clinical examination (with the aid of a periodontal probe,
exploratory probe and dental mirror) to analyze the presence, location, shape and severity of
the lesion, as well as any type of occlusal instability. Occlusal aspects were assessed to
determine the presence or absence of characteristics that indicate an undesirable occlusion,
such as the presence of eccentric occlusal contacts, evaluating protrusion and laterality
through occlusal contact demarcation tape. The data obtained were tabulated in the Microsoft
Excel program (Version PT / 2016) for frequency analysis.As a result, it was observed that
69.2% of the patients analyzed had LCNC, with a higher prevalence in males (53%), where
dental contacts considered harmful (A + C and A, B, C alone) were more prevalent, in
addition to of a greater presence of lesions with minimal loss of dental structure (50%) and
with the lower first premolars as the most affected teeth (25%). It was concluded, then, that
the occurrence of LCNC is associated with several factors and may be related to unfavorable
occlusal contacts.
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