Prevalence of temporomandibular disorders and its clinical signs in Chinese students, 1979–2017: A systematic review and meta‐analysis

Abstract

Objective This study intends to assess the prevalence of temporomandibular disorders and its clinical signs in Chinese students. Materials and Methods Search strategies were performed in seven electronic databases, and the reference lists from potentially relevant studies were searched manually. Only observational studies that met the eligibility criteria were selected. A validated instrument was used to evaluate the quality of the included studies. A random‐effects model was used to calculate the pooled prevalence of temporomandibular disorders and its clinical signs. Results Twenty‐three articles that met the eligibility criteria were included in this review and meta‐analysis. The prevalence of temporomandibular disorders was 29.1% (95% confidence interval [CI], 23.7–35.1; n = 12,702), and a significant difference was observed between males and females. The most prevalent sign was temporomandibular joint sounds (17.4%; 95% CI, 13.8–20.6; n = 6,615) followed by abnormal jaw movement (12.3%; 95% CI, 9.1–16.7; n = 5,496) and pain (9.9%; 95% CI, 7.4–13; n = 4,552). Conclusions The overall prevalence of temporomandibular disorders in Chinese students was approximately 29.1%, and a statistically significant difference was observed between males and females. The most prevalent sign was temporomandibular joint sounds (17.4%), followed by abnormal jaw movement (12.3%) and pain (9.9%).

Temporomandibular joints disorders (TMDs) prevalence and their relation to anxiety in dental students

“…Female dental students had a higher PHQ-4 mean score than male students which was in agreement with similar studies done on Saudi dental students (Inam 2007, Al-Saleh, Al-Madi et al 2010, Benoliel, Sela et al 2011, Al-Sowygh 2013. Overall, the rate of anxiety in women has been reported to be higher than men (Kessler, Sonnega et al 1995, Steel, Marnane et al 2014, Xie, Lin et al 2019. This could be explained by the slower processing in neurotransmitter serotonin which has a critical role in anxiety and depression.…”

“…Bagis, Ayaz et al 2012, Naeije, Te Veldhuis et al 2013, Wieckiewicz, Grychowska et al 2014, de Melo Junior, Aroucha et al 2019, Xie, Lin et al 2019, Sankuratri, Verma et al 2021, Srivastava, Shrivastava et al 2021. Interestingly, 30% of the subjects had more than one TMDs diagnosis.…”

Adverse Impacts of Temporomandibular Disorders Symptoms and Tooth Loss on Psychological States and Oral Health-Related Quality of Life During the COVID-19 Pandemic Lockdown

“…Being the third most prevalent social dental disease, TMD affects about 10-15% population across the world and the incidence is still rising (2,3). Typical symptoms of TMD include local pain, limited mandibular movement, and TMJ sounds during movement (4). The etiology of TMD still remains elusive, accumulating evidence suggests that factors from biologic, environmental, social, emotional, and cognitive aspects all play an indispensable role in the occurrence and development of TMD (5).…”

Predictability and accuracy of the Short-Form Fonseca Anamnestic Index in relation to the modified Helkimo Index for the diagnosis of temporomandibular disorders: A cross-sectional study

“…International epidemiological studies indicated that the prevalence of TMDs affects more than 50% of the world population, where 75% have presented signs at some time, whereas 33% present some symptom and 5% require some type of treatment. [ 1 2 ] It has also been reported that the main origin of this disorder occurs in childhood or adolescence and to a lesser extent in adulthood. [ 3 ] The prevalence of TMDs in Peru is similar to that reported internationally,[ 4 ] so numerous authors in different parts of the world recommend further research to obtain sufficient evidence on this public health problem.…”