The prognosis of myofascial pain syndrome (MPS) during a fixed orthodontic treatment.

Among treatments in the literature for myofascial pain syndrome (MPS), the most reliable therapies in dentistry are spray and stretch, and, although less frequently used, anesthetic injection. Adult MPS subjects are often treated using fixed orthodontic therapy for resolution of malocclusion. There is no clarity in the literature on the prognosis of MPS during orthodontic therapy.

Does the design of self-ligating brackets show different behavior in terms of friction?

Aim: This in vitro study evaluated the friction generated by aligned stainless steel conventional brackets, self-ligating Damon MX brackets, Time3 brackets, Vision LP brackets, and low-friction Slide ligatures coupled with various stainless steel, nickel-titanium (Ni-Ti), and beta-titanium (TMA) archwires.

Methods: All brackets had a 0.022-inch slot; the orthodontic archwires were 0.

Evaluation of the friction of self-ligating and conventional bracket systems.

Objectives: This in vitro study evaluated the friction (F) generated by aligned stainless steel (SS) conventional brackets, self-ligating Damon MX(©) brackets (SDS Ormco, Glendora, California, USA), Time3(©) brackets (American Orthodontics, Sheboygan, Wisconsin, USA), Vision LP(©) brackets (American Orthodontics), and low-friction Slide(©) ligatures (Leone, Firenze, Italy) coupled with various SS, nickel-titanium (NiTi), and beta-titanium (TMA) archwires.

Methods: All brackets had a 0.022-inch slot, and the orthodontic archwires were 0.

Signs and symptoms of temporomandibular joint disorders in Caucasian children and adolescents.

This study investigated the prevalence of the signs and symptoms of temporomandibular disorders (TMD) in a population of children and adolescents. TMD signs and symptoms were recorded in 1134 subjects (593 males and 541 females; age range 5-15 years), divided into various groups according to the: (i) Angle dental class; (ii) presence and type of crossbite; (iii) gender; and (iv) age (ages 5-11 and 12-15 years). The percentages of signs and symptoms were compared using the chi2-test to determine the differences among the groups for the rates of TMD symptoms, bruxism, joint sounds, deviation during opening, reduced opening/lateral/protrusive movements, and myofascial pain.

Relation between facial morphology on lateral skull radiographs and sEMG activity of head, neck, and trunk muscles in Caucasian adult females.

This study aimed to evaluate whether there is an association between facial morphology on cephalometrics and surface electromyographic (sEMG) recordings of the head, neck, and trunk muscles. Forty-seven Caucasian adult females, 18-29years of age (average: 24), underwent lateral skull radiographs in "natural head position", obtained by having the subject look at a small mirror at eye level, and sEMG recordings for the following muscles: masseter, anterior temporal, digastric, posterior cervicals, sternocleidomastoid, and upper and lower trapezius. All muscles were monitored bilaterally at mandibular rest position and during maximal voluntary clenching (MVC).