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Biomedical subjects

G Agerberg

Publications and source records attributed to G Agerberg.

At least 37 records · Page 2Linked to original sources
PubMed1986

Headache and dysfunction of the masticatory system in adolescents.

An epidemiologic group of 285 17-year-old adolescents was studied with the aid of a questionnaire for frequency and intensity of headache and for symptoms of dysfunction of the masticatory system. They were also subjected to a functional examination of the masticatory system. Recurrent headaches occurred significantly more often among the girls (18%) than the boys (6%). Girls also reported significantly more intense headaches than boys. Fatigue in the jaws and difficulties in chewing were commoner in those with frequent and more intensive headaches. Tenderness to palpation of the masticatory muscles and impaired mandibular mobility were significantly commoner findings among those with recurrent headaches and those with more intense headaches. Tooth-grinding and clenching were related to frequency but not to intensity of headache. The investigation showed a significant relationship between frequency and intensity of headaches and signs and symptoms of dysfunction of the masticatory system.

Adolescent↗
PubMed1986

Relationship between signs and symptoms of mandibular dysfunction in adolescents.

The relationship between signs and symptoms of mandibular dysfunction was studied in 285 17-yr-old adolescents living in the municipality of Skellefteå, Sweden. Of the sample 62% had either some sign or symptom of dysfunction, and there was a positive correlation (P less than 0.05) between the two indices used. Neither morphologic nor functional malocclusions were related to the anamnestic dysfunction index. Signs of mandibular dysfunction were significantly more frequently found in those with a feeling of fatigue in the jaw (P less than 0.001). TMJ sounds were related to palpation tenderness in the lateral pterygoid muscle and to impaired horizontal mobility of the mandible. The most frequent symptom related to various signs of mandibular dysfunction was feeling of fatigue in the jaws which suggests that this is an early symptom of muscular origin that should be observed more closely. The study supports the view that even a moderate reduction of mouth opening capacity may indicate mandibular dysfunction and we recommend that this variable be routinely recorded.

Adolescent↗
PubMed1986

Mandibular dysfunction in adolescents. I. Prevalence of symptoms.

The prevalence of symptoms of mandibular dysfunction was studied in 285 17-year-old adolescents living in the municipality of Skellefteå. They answered a questionnaire concerning general state of health and occurrence of headache, facial pain, or temporomandibular problems. A fifth of the subjects reported some symptoms involving the masticatory system. There was no statistically significant difference between sexes. Of the sample 13% had mild symptoms and 7% had severe symptoms of dysfunction. The most frequent symptoms were clicking sounds from the temporomandibular joint (13%) and a feeling of fatigue in the jaws (6%). Recurrent headache (once a week or more) was reported by 12% and appeared significantly more often among the girls (p less than 0.001). Three-quarters used both sides for chewing, and oral parafunctional habits were reported by 68%. Since mild and moderate symptoms of mandibular dysfunction and headache obviously make an early appearance, a routine dental examination should include screening of these symptoms to identify patients who should be observed more closely.

Adolescent↗
PubMed1986

Mandibular dysfunction in adolescents. II. Prevalence of signs.

The prevalence of signs of mandibular dysfunction was studied in 285 17-year-old adolescents living in the municipality of Skellefteå. They were subjected to a functional examination of the masticatory system. The commonest clinical signs were tenderness to palpation of the masticatory muscles (41%) and clicking sounds from the temporomandibular joints (22%). The tenderness to palpation was generally located to the lateral pterygoid muscle and the insertion of the temporal tendon. Girls were tender to palpation oftener (p less than 0.05) than boys. Unilateral contact in the retruded position was recorded in 77% of the subjects. Mediotrusion interferences were found in 30% of the subjects. Signs of clinical dysfunction were found in 56% and were significantly commoner in girls than in boys (p less than 0.01). Since mild and moderate signs of mandibular dysfunction obviously make an early appearance, a routine dental examination should include a functional evaluation of the stomatognathic system, to identify patients who should be observed more closely.

Adolescent↗
PubMed1986

Two-year longitudinal study of symptoms of mandibular dysfunction in adolescents.

Symptoms of mandibular dysfunction were followed up longitudinally from the age of 17 to 19 years in 285 adolescents. Totally, 27 subjects dropped out, leaving 258 for the longitudinal intraindividual comparisons. Reports of TMJ sounds increased significantly with age from 14% to 23% for girls, and at 19 years of age they significantly more often reported such sounds than boys. Girls also more frequently reported recurrent headaches (18%) than boys (1-6%). The prevalence of symptoms of mandibular dysfunction was about 20% each year, but there was no general increase of frequency and severity of symptoms during the observation period in spite of an incidence of 8%; new symptoms thus appeared as frequently as old symptoms disappeared. The prevalence of dysfunction was, according to the anamnestic index (Ai), significantly higher for 18- and 19-year-old girls. Girls also significantly more often reported more symptoms than boys, according to an accumulated index (AAi). Most symptoms were of mild character and fluctuated longitudinally. The need and demand for treatment may therefore be considered small. A routine stomatognathic screening is justified to identify those in need of treatment and those who should be observed more closely.

Adolescent↗
PubMed1986

Two-year longitudinal study of signs of mandibular dysfunction in adolescents.

Signs of mandibular dysfunction in adolescents were studied longitudinally from the age of 17 to 19 years. Totally, 27 subjects dropped out, leaving 258 for the longitudinal intraindividual comparisons. TMJ sounds were found in about one-fifth of the adolescents and were recorded significantly more often in girls than boys from the age of 18 years. The frequency of muscles tender to palpation fluctuated somewhat between the annual examinations. At the first and second examination muscle tenderness was statistically significantly commoner in girls than in boys. Except for TMJ sounds and muscle tenderness signs of mandibular dysfunction were rare. About half of the subjects had signs of mandibular dysfunction, mostly of mild character. Girls regularly had significantly higher dysfunction index (Di) values than boys. No change between the annual recordings was noted in 60% of the individuals, and impairment and improvement had occurred about equally often. In 29%, signs were recorded all years.

Adolescent↗
PubMed1985

Regression analysis of electromyographic activity of masticatory muscles versus bite force.

Electromyographic (EMG) activity of the superficial masseter and the anterior temporal muscles versus the bite force was studied in 10 young women. They were fully dentate and had no dysfunction of the stomatognathic system. The descending part of the trapezius muscle was also chosen for EMG registration. The average bite force between the first molars was 396 N (Newton). Steeper slopes for the EMG versus force regression curve at high contraction levels than at low contraction levels for the superficial masseter muscle may indicate that this muscle has a recruitment pattern that differs from that of the anterior temporal muscle. In the case of the anterior temporal muscle there was no difference between the slopes for the EMG-force regression at low and high contraction levels. There was significantly increased activity in the descending part of the trapezius muscle mainly during high bite force levels in half the subjects.

Adult↗
PubMed1975

Symptoms of functional disturbances of the masticatory system. A comparison of frequencies in a population sample and in a group of patients.

With the aid of questionnaires symptoms of mandibular dysfunction and some general and oral conditions were studied in a group of previous patients and in a randomly selected population sample. From the two materials answers were obtained from 82 persons (81%) and 1.106 (91%) respectively. The results confirmed that women are heavily overrepresented in patient materials. This differs from the fairly equal sex distribution found in population studies of mandibular dysfunction. The most frequent symptoms of mandibular dysfunction were TMJ-sounds which appeared in 39 and 79% and pain on opening the mouth which appeared in 12 and 42% of the population and patient samples respectively. All symptoms of mandibular dysfunction, headache, clenching of the teeth and unilateral chewing appeared significantly more often in the previous patients, but the number of natural teeth did not differ in the two samples. The general state of health was poorer and general joint -- muscle symptoms were more common in the previous patients as well as in those of the population sample with symptoms of mandibular dysfunction. This finding suggests that functional disturbances of the masticatory system often may be related to impaired general health.

Adolescent↗