Background: This study aimed to assess the influence of bruxism types and frequencies on pain localisation in individuals with temporomandibular disorders (TMD). Methods: The study participants included 100 TMD patients. Participants consented to undergo clinical evaluations based on the Diagnostic Criteria for Temporomandibular Disorders Assessment Instruments Protocol (DC/TMD). Pain was determined by palpating the temporal and masseter muscles and the temporomandibular junction (TMJ). The oral behavior checklist (OBC) was used in DC/TMD to assess participants’ risk for parafunctional movements and types of bruxism. The parafunctional risk assessment was performed with the assessment method reported by The International Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) Consortium Network. Results: Most participants are at high risk for parafunction. There was a statistically significant relationship between masseter, temporal and TMJ pain and parafunctional movements (p < 0.05). Masseter pain on palpation showed significant relationships with sleep bruxism and awake grinding frequency (p < 0.05). Temporal muscle pain on palpation showed significant relationships with the presence and frequency of awake clenching (p < 0.05). A significant correlation exists between TMJ pain on palpation and awake grinding and clenching and with awake clenching frequence (p < 0.05). Conclusions: Based on their frequency and presence, different types of bruxism may be associated with different pain symptoms.

This study aimed to evaluate the shear bond strength (SBS) of ceramic and titanium substructures produced by different methods. After designing 51 disc-shaped samples, three groups were created according to material type and manufacturing method Cobalt-chromium (Co-Cr) group prepared by selective laser melting (GC), titanium group prepared by milling (GTi1) and titanium group prepared by selective laser melting (GTi2). Surface roughness values (Ra, Rz) of six samples from each group were examined and scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) analyses were applied to one specimen from each group, and failures were examined using a stereomicroscope. The mean SBS, Ra and Rz values for GC were 21.21 ± 6.15 MPa, 5.79 ± 0.58 µm and 37.54 ± 6.87 µm; GTi1 were 25.80 ± 7.79 MPa, 2.69 ± 0.41 µm and 26.05 ± 7.60 µm; GTi2 were 24.32 ± 7.07 MPa, 5.91 ± 0.51 µm and 44.46 ± 7.78 µm respectively. Although the shear bond strength did not show a significant difference between the groups, the roughness values of the GTi1 group were statistically significantly lower than those of the other groups (p < 0.05). The roughness values of the GTi2 and GC groups did not show a statistically significant difference (p > 0.05). The ceramic bonding of titanium specimens produced by both methods showed values similar to those of Co-Cr and ceramic bonding used in routine treatments.

Objective: This systematic review and meta‐analysis study was carried out to compare the effectiveness of occlusal splint (OS) and Botox (BTX) injections in temporomandibular disorders (TMDs).Material and Methods: Irrespective of the starting year, studies were searched for up to 2024 using PubMed, Web of Science, Scopus databases and the Google Scholar search engine. In the study, graded chronic pain scale and maximum mouth opening amount parameters were analysed with Comprehensive Meta‐Analysis programme.Results: Out of 619 studies, only six were included in the meta‐analysis. The effect size was 0.293 in favour of BTX in the studies evaluating the maximum mouth‐opening (MMO) range. However, the amount of MMO did not show a statistically significant difference between the OS and BTX groups (95% CI – 0.383 to 0.969, P = 0.395, z = −0.850). In the subgroup analyses carried out based on the follow‐up periods, it was found that the MMO was statistically significantly higher in the BTX group at the first week and in the OS group at the third month. However, there was no significant difference observed at the first, second, sixth and twelfth month follow‐ups (P > 0.05). No significant difference was found between the groups (P > 0.05) in the publications that evaluated the graded chronic pain scale (GCPS), although an effect size of 0.673 was found in favour of OS (95% CI 0.331 to 1.365, P = 0.272, z = −1.098).Conclusion: BTX injections and OS applications show significant differences in the MMO of individuals in the early period. In contrast, the MMO of individuals and the GCPS show similar findings in the sixth month and longer follow‐up.

Aim: The aim of this study is to investigate the effect of different composite resins and surface treatments on the repair strength of a resin matrix ceramic. Material and Methods: Sixty resin matrix ceramic samples were divided into three main groups based on the surface treatments (Diamond bur roughening, hydrofluoric acid roughening, no surface treatment). Each main group was further divided into two subgroups depending on the type of composite resin (Nanoceramic and nanohybrid composite resins) bonded. Shear bond strength testing was performed for all groups at a 0.5 mm/min approach speed after thermal ageing. For all statistical comparisons in the study, p<0.05 was the level of statistical significance. Results: The results showed that the highest shear bond strength was obtained in the group that underwent hydrofluoric acid surface treatment and was bonded with nanoceramic composite (18.17±4.48 MPa). On the other hand, the lowest shear bond strength was observed in the nanohybrid group (3.64±0.9 MPa), which did not undergo any surface treatment. The group that underwent hydrofluoric acid roughening showed significantly higher shear bond strength than those without surface treatment and those roughened with a diamond bur. Additionally, the nanoceramic-bonded groups had significantly higher shear bond strength than the nanohybrid-bonded groups. Conclusions: Based on these findings, it can be concluded that resin matrix ceramics that are treated with hydrofluoric acid and bonded with nanoceramic provide better repair strength.