Bruxism, Related Factors and Oral Health-Related Quality of Life Among Vietnamese Medical Students

Abstract

Although bruxism is a common issue with a high prevalence, there has been a lack of epidemiological data about bruxism in Vietnam. This cross-sectional study aimed to determine the prevalence and associated factors of bruxism and its impact on oral health-related quality of life among Vietnamese medical students. Bruxism was assessed by the Bruxism Assessment Questionnaire. Temporomandibular disorders were clinically examined followed by the Diagnostic Criteria for Temporomandibular Disorders Axis I. Perceived stress, educational stress, and oral health-related quality of life were assessed using the Vietnamese version of Perceived Stress Scale 10, the Vietnamese version of the Educational Stress Scale for Adolescents, and the Vietnamese version of the 14-item Oral Health Impact Profile, respectively. The prevalence of bruxism, sleep bruxism, awake bruxism, and both conditions in Vietnamese medical students were 51.2%, 38.2%, 23.4%, and 10.4% respectively. Stress, temporomandibular joint pain, masticatory muscle pain, and tooth attrition were associated with the presence of bruxism. Vietnamese medical students were negatively affected by bruxism in terms of oral health-related quality of life.

Treatment responses in chronic temporomandibular patients depending on the treatment modalities and frequency of parafunctional behaviour

“…As we know that higher frequency of parafunctions tended to be associated with more severe stress and impaired QoL at the beginning of the study, we can say that those variables obviously play a larger role in patients with more frequent parafunctional activities and are positively affected by the therapy. The association of oral parafunctional activities with stress and quality of life has been established in a number of studies 39‐41 …”

“…The association of oral parafunctional activities with stress and quality of life has been established in a number of studies. [39][40][41] The within-subject analysis showed that the QoL of the HFP patients increased after 3 months, in contrast to the LFP group where significant improvement occurred only after the 6th month. Better QoL after 3 months, in the HFP group, is probably a consequence of education and attention to the role of clenching and various other harmful habits and prevention of nocturnal parafunctions and consequently less muscle pain and headaches.…”

Probable Bruxism and Oral Health-Related Quality of Life

“…En el presente estudio se observa que un 47.1% de la población exhibe probable bruxismo, lo que es similar a los resultados obtenidos por Ordoñez-Plaza et al, (18) con un 52%, aunque cabe señalar que este estudio solo incluyó el bruxismo de vigilia. Por su parte Phuong et al, (21) en su estudio donde se evalua el posible bruxismo, obtuvo un 51.2%. No obstante, dichas cifras no concordaron con el estudio de Silva A.…”

“…Por otra parte, siguiendo con el bruxismo, se observa que la manifestación circadiana más frecuente fue la de vigilia con 49%, mientras que la del sueño obtuvo un 9%. Este porcentaje es opuesto a lo identificado en la investigación de Phuong et al, (21) en la que el 38.2% es bruxismo de sueño y el 23.4% corresponde a la vigilia.…”

“…A su vez, en el estudio realizado por Tay et al (24) los puntajes obtenidos para sus tres grupos evaluados presentan diferencias estadísticamente significativas entre si (P<0,001); así como se obtienen puntajes más altos en los sujetos con posible bruxismo de sueño. En similitud, Phuong et al (21) señala que los puntajes obtenidos fueron más altos en los sujetos que presentaron posible bruxismo. Con relación a estos estudios, cabe mencionar que el principal instrumento que se utiliza es el OHIP, el cual ha demostrado ser confiable y valido (14).…”