The relationship between headaches and sleep disturbances is complex and difficult to analyze. Both symptoms may have causal relations, or may be associated in the same patient with mutual reinforcements. We studied 25 patients presenting with morning or nocturnal headaches. Standard headache diagnosis and polysomnography were performed. After polysomnography, the diagnoses were reevaluated. The main headache entities were cluster, chronic paroxysmal hemicrania, migraine, tension, combined headache, and chronic substance abuse headache. For each group, headache, sleep data, and changes in diagnosis are discussed. The diagnosis was changed in 13 patients; the final diagnoses were periodic movements of sleep, fibromyalgia syndrome, and obstructive sleep apnea. The diagnoses of cluster headache and chronic paroxysmal hemicrania were not modified by polysomnography. The migraine and tension headache groups had a relative male preponderance, and the diagnosis was changed in approximately half of the patients. This was also observed in combined headaches. Patients who had chronic substance abuse headaches had mainly insomnia, which in some cases, was relieved by stopping medication. Data were also analyzed in terms of simple models linking headache and sleep disturbances. Such an approach allowed the identification of several modes of mutual interaction. In summary, morning or nocturnal headaches are frequent indicators of a sleep disturbance and their presence might justify polysomnography, and the use of simple clinical models may be useful for understanding the complex relationship between headache and sleep.

Headaches occurring during the night or early morning are often related to a sleep disturbance.

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Abstract

BACKGROUND AND OBJECTIVES: Temporomandibular disorders are highly prevalent and may impair several oral function-related aspects. This study aimed at evaluating the impact of the presence and severity of temporomandibular disorder signs and symptoms on oral health-related quality of life. METHODS:Participated in the study 135 dentistry students of the Federal University of Paraiba. The presence of temporomandibular disorder was determined by means of an anamnesis questionnaire and a summarized clinical evaluation protocol. Oral health-related quality of life was determined by the summarized Oral Health Impact Profile version translated and validated for the Portuguese language. Statistical comparisons between Oral Health Impact Profile-14 means related to the presence of temporomandibular disorder signs and symptoms were achieved with Mann-Whitney and Kruskal-Wallis tests. RESULTS: Volunteers with temporomandibular disorder (p<0.001), needing treatment (p<0.001) and higher severity (p<0.001) had higher impact on oral health-related quality of life. Volunteers with clinical temporomandibular disorder signs had further quality of life impairment, being that individuals with simultaneous muscle and joint temporomandibular disorders (p=0.034) had higher Oral Health Impact Profile-14 scores. Most impaired domains were physical pain (p=0.045), functional limitation (p=0.007) and psychological discomfort (p=0.045). Influence of temporomandibular disorder presence and severity on oral health-related quality of life* Influência da presença e gravidade da disfunção temporomandibular na qualidade de vida relacionada com a saúde oral

The application of two disinfection cycles did not change the Shore A hardness values for all the materials. The glutaraldehyde solution demonstrated the highest values of Shore A hardness for the Molloplast-B, Mucopren soft, and Ufi Gel P materials, while Eversoft did not present any differences in hardness when submitted to different disinfection treatments.

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Purpose: To evaluate the roughness and color change of a conventional acrylic resin and a bis-acryl resin, submitted to different types of polishing and exposed to a staining solution. Materials and Methods: One hundred specimens were manufactured from an autopolymerizing conventional acrylic resin (Duralay, shade 66) (n = 50) and a bis-acryl resin (Protemp 4, shade A3) (n = 50) according to the manufacturers' instructions. Specimens were subdivided into 10 groups (n = 10), according to the type of resin and polishing method, including no-polishing (control groups for acrylic resin [tungsten bur finishing] and bis-acryl resin [cotton and alcohol]), Enhance System, Edenta kit, Labordental kit, and sandpaper. The specimens were immersed in a staining solution (coffee at 60°C) for 7 days. Surface roughness was evaluated before the first immersion (baseline -Ra1) and after 7 days (Ra2). The color change (E) was determined after 24 hours (E1) and 7 days (E2), by CIE L * a * b * scale. Data were statistically analyzed with 3-way ANOVA for repeated measures test and Tukey test (α = 0.05). Results: According to 3-way ANOVA test, material, polishing techniques, and polishing*material factors exhibited statistically significant influence (p < 0.0001) on the roughness, and, for color change, material, polishing techniques, time, polishing*material, and material*time factors were statistically significant (p < 0.0001). The polishing techniques successfully reduced the surface roughness of acrylic resin groups, when compared to control (p < 0.001), but for bis-acryl resin, results were not different from the control group (Enhance: p = 0.954, Edenta: p = 0.866, sandpaper: p = 0.366, Labordental: p = 0.945). Surface roughness was not affected by the immersion in staining solution for 7 days. Color change of acrylic resin groups after 24 hours and 7 days of immersion exhibited a clinically acceptable value ( E < 3.7) with the exception of the Enhance group, and all bis-acryl resin groups exhibited a clinically unacceptable color change value ( E > 3.7) independent of polishing technique and time interval (E1 and E2). Conclusions: Roughness of both materials was similar when the polishing techniques studied were performed, although Ra values were superior to the clinically acceptable values (0.20 µm), and were not affected by the immersion protocol studied; however, when esthetics are critical, the selection of material type is more important than the surface treatment technique used, and bis-acryl resin was more susceptible to clinically unacceptable color change after immersion in a staining solution.Provisional restorations should be prepared to reproduce and maintain the tooth's natural properties, such as size, position, shape, color, surface texture, and dental translucency. 1-3 Currently, with the development of new dental materials, professionals have many options to manufacture provisional restorations. These options include poly methyl methacrylate (PMMA), poly ethyl methacrylate (PEMA), polyvinyl ethyl methacrylate (P...