Tandlaegebladet最新文献

The different types of luxations in the temporomandibular joint and their management are discussed. The bilateral eminectomia a.m. Myrhaug is described, and the results from our Department are presented. Seven patients have been operated, and all are relieved of their disease and free from pain. The patients are happy with the operations and there have been no postoperative complications. All the patients would recommend this type of operation to others in a similar situation.

Dentists may develop contact allergy induced by handling resinous dental materials. Vinyl and latex gloves may provide protection against the monomers of these materials during the time it takes for a monomer to permeate the glove. The passage times and rates of penetration of four commonly used (di)methacrylates, HEMA, TEGDMA, BISGMA and UEDMA for 11 protective gloves were measured. The passage time in vinyl gloves for HEMA and TEGDMA was about 2 min, and around 20 min for BISGMA and UEDMA. The rates of penetration of HEMA and TEGDMA in vinyl gloves were between 1 and 4 mumol.min-1.cm-2. The passage times of HEMA and TEGDMA through most of the latex and modified latex gloves were between 5 and 8 min and the rates of penetration between 0.5 and 1 mumol.min-1.cm-2. Latex and modified latex gloves provide protection against BISGMA and UEDMA in 80 min or more with one exception (Elastyrene), which burst after about 50 min in contact with the resins. Of the tested gloves Ansell, Neutralon, Mediglove and Biogel D provide protection against HEMA and TEGDMA for at least 5 min.

Protective latex surgical gloves and examination gloves may cause allergic contact dermatitis, mainly due to rubber chemicals used in the manufacturing process. Latex proteins in the gloves may cause contact urticaria and even anaphylactoid reactions. Eighty-eight dentists and other members of the dental team were tested for contact allergy to thiuram- and mercapto-derivatives, and for contact-urticaria to latex proteins. All but 5 persons used gloves at least periodically. Fifty-one of 87 of the persons who answered a questionnaire had or had had symptoms from the skin on the hands, but in only 3 cases could allergy to the gloves be proved. Women had more often symptoms than men, and female dentists with symptoms used gloves more often and for longer periods than female dentists without symptoms. It can be concluded that redness of the skin, itching, vesicles and eczema are common symptoms reported in connection with use of gloves, but proved allergy to the gloves is rare. Most symptoms are supposed to be due to skin irritation from the gloves in addition to irritative exposure from handwashing and other chemical irritants in dental work. The nature of the irritative effect from gloves is only partly known and should be studied further.

A case of dislocation of the mandibular condyle into the middle cranial fossa is presented. The patient was a 8-year-old girl. Immediate conservative reposition was performed successfully with an intermaxillary fixation for two weeks. Two years after the accident her dental occlusion had remained stable, although there was a slight limitation in opening. Based on the present case and previous case reports it is concluded that early diagnosis and treatment is important. Manual reduction and fixation should be the first choice of treatment. The risk of intracranial complications necessitates a close cooperation with a neurosurgeon. Follow-up studies have revealed that most of the patients develop laterognatism and/or limited movements of the mandible.