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JOURNAL ARTICLE

Prevalence of bruxism in undergraduate students

Luana Goés Soares, Igor Reali Costa, Jadimar Dos Santos Brum Júnior, Wyllerson Silveira Bronzon Cerqueira, Evandro Silveira de Oliveira, Dhelfeson Willya Douglas de Oliveira, Patricia Furtado Gonçalves, José Cristiano Ramos Glória, Karine Tais Aguiar Tavano, Olga Dumont Flecha
Cranio: the Journal of Craniomandibular Practice 2017, 35 (5): 298-303
27684574

OBJECTIVE: The aim of this study was to determine the prevalence of bruxism in students at the Federal University of the Jequitinhonha and Mucuri Valleys in Brazil. The secondary objectives were to identify the factors associated with bruxism; prevalence of dental wear; and to distinguish the signs and symptoms of temporomandibular dysfunction when present, and verify its relationship with bruxism.

METHODS: Two hundred fifty-three students (106 males, 147 females) were clinically examined and answered a questionnaire. Trained researchers performed the dental wear evaluation. The incisal edge and occlusal surface were classified as follows: no wear, wear into enamel, wear into dentin, and extensive wear into dentin. Demographic data and factors related to bruxism were obtained by a questionnaire. The participants who presented dental wear and habit of clenching/grinding teeth were classified as bruxers. The data were analyzed by the SPSS program (p < 0.05).

RESULTS: The results showed that 31.6% of the students had bruxism. Of the 7084 teeth evaluated, 376 (5.3%) had some type of facet wear. The teeth that had the highest prevalence of wear facets were the canines. Stress, muscle pain, temporomandibular joint (TMJ) pain, and TMJ noise were significantly associated with bruxism (p < 0.001).

CONCLUSION: The prevalence of bruxism was 31.6% in this population. The factors most associated with bruxism were stress, muscle pain, TMJ pain, and TMJ noise.

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