The silent period in the masseter and the anterior temporalis muscles in adult patients with mild or moderate mandibular dysfunction symptoms.

The electromyographical silent period in the masseter and the anterior temporalis muscles during tooth tapping and jaw jerk were studied in patients with fairly mild temporomandibular joint dysfunction symptoms. The length of the silent periods in the patient group did not differ generally from that in a control group. During tooth tapping, however, patients with distinct muscular disorders had shorter silent period duration (7.

The silent period in the masseter and anterior temporalis muscles in young adult subjects unaware of mandibular dysfunction symptoms.

In fourteen individuals unaware of mandibular dysfunction symptoms, latency and duration of the silent period in the masseter and anterior temporalis muscles at tooth tapping and jaw jerk were reasonably reproducible after 5 weeks and 5 months. Although the subjects felt no discomfort in the stomatognathic system, in some of them mild to moderate muscle tenderness, TMJ sound and occlusal disharmony were found at clinical examination. The relationship between these symptoms and the silent period was analysed.

Outcome of treatment of patients with orofacial discomfort complaints.

In 113 patients with a wide variation of orofacial and general complaints, which they assumed were caused by galvanic currents and/or metallic restorations, the initial and long-term development (3 years) after treatment was studied. Many treatment procedures were tried; besides information and follow-ups, each patient underwent in average of 6.6 different measures.

Clinical findings in patients with orofacial discomfort complaints.

In 113 patients with orofacial and general complaints, which they assumed were caused by galvanic currents and/or metallic restorations, clinical dental and medical examinations were performed. Most of the patients had natural teeth with dental metallic restorations. A number of dental diagnoses, such as caries, pulpitis, periapical osteitis and periodontitis, were found.

Reported symptoms, diseases, and medication of patients with orofacial discomfort complaints.

This paper is a part of a series of studies of 113 patients with orofacial and general complaints which they assumed were caused by metallic dental restorations and/or oral galvanic currents. An extensive case history was taken by means of a questionnaire and an interview. The results showed that the patients reported widely varying symptoms, both oral and general, such that the polysymptomatic character of the patients cannot be explained by a single etiologic factor.

An examination of the surface corrosion state of dental fillings and constructions. II. A clinical study on patients with orofacial complaints.

A group of 115 patients with orofacial complaints has been examined. A new method for intraoral measurement of electrode potentials on the surface of the amalgam fillings and prosthetic constructions has been developed and applied. The possible connections between the measured electrode potentials and patients' saliva properties and their complaints have been discussed.

An examination of the surface corrosion state of dental fillings and constructions. I. A laboratory investigation of the corrosion behaviour of dental alloys in natural saliva and saline solutions.

Electrochemical measurements on amalgams and gold alloys in natural saliva and saline solutions have been performed. The results show strong inhibiting effects of some components in natural saliva on the surface corrosion behaviour of amalgams. For the gold alloys the cathodic reduction of oxygen was notably lower in natural saliva than in saline solutions.

Contact allergy to dental materials in patients with orofacial complaints.

Two groups of individuals were patch tested for frequencies of contact allergy to dental materials. The patient group with orofacial and distant symptoms and complaints referred to the Department of Prosthetic Dentistry were compared with an age-sex matched control group of individuals referred to the Department of Dermatology. The results did not show any differences in patch test reactions between the patient and control groups.

Changes in bite force and chewing efficiency after denture treatment in edentulous patients with denture adaptation difficulties.

Masticatory function was studied by means of a chewing efficiency test and bite forces measurements in forty-nine edentulous patients who had applied for treatment with fixed protheses on osseointegrated dental implants. Registrations were performed with the original complete dentures and after treatment aiming at optimizing the dentures. The patients were divided into two groups and the post-treatment recordings were completed after adaptation periods of 2 and 6 months, respectively.

Changes in chewing patterns of patients with complete dentures after placement of osseointegrated implants in the mandible.

Mandibular movements were recorded with the Selspot system in 16 complete denture patients, before and after treatment with mandibular OIFD. The general chewing pattern underwent only minor changes. However, some chewing cycle parameters showed obvious alterations.

Salivary flow, saliva, pH and buffering capacity in 70-year-old men and women. Correlation to dental health, dryness in the mouth, disease and drug treatment.

A representative systematic selection of 30% of all 70-year-olds (1148 persons) in Göteborg were invited to a population study. The participation rate was 85%. Sixteen per cent of the men and 25% of the women reported dryness in the mouth (sex.

Variation in dental health in 70-year old men and women in Göteborg, Sweden. A cross-sectional epidemiological study including longitudinal and cohort effects.

Within the framework of an epidemiological, initially cross-sectional and subsequently longitudinal, population study of 70-year-old people, a representative sample of 386 subjects were subjected to odontological investigation. Forty six per cent of the men and 55% of the women were edentulous in both jaws and 20% of the men and 19% of the women were edentulous in one jaw. In dentulous subjects the mean number of teeth was 13.

Chewing patterns before and after treatment with completè maxillary and bilateral distal-extension mandibular removable partial dentures.

Prosthodontic rehabilitation with complete maxillary dentures and mandibular bilateral distal-extension removable partial dentures did not change the general masticatory function to any great extent. However, the velocity of the mandible was increased, especially in the opening phase, and so was the mandibular displacement. The latter seems to be the cause for a long closing duration.