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Biomedical subjects

M Nilner

Publications and source records attributed to M Nilner.

35 records · Page 2Linked to original sources
PubMed1992

Masticatory efficiency in individuals with natural dentition.

51 healthy dentate subjects aged between 20 and 60 years were evaluated with regard to their masticatory efficiency using a sieving test. A subjective evaluation of difficulty in chewing different kinds of food was also obtained by means of a questionnaire. The occlusal and restorative status were assessed using specific indices. The masticatory efficiency was shown to be lower with increasing age 20-39 years, mean = 39.8 and 40-60 years, mean = 27.1, respectively (p < 0.05). Males had a statistically significantly higher masticatory efficiency index than females. Multiple regression analysis showed that age, sex, the number of occluding teeth and the orthodontic treatment need index can predict half the variance in masticatory efficiency. It is concluded that it is more appropriate to describe masticatory efficiency with an average value for different age groups.

Adult↗
PubMed1991

Short-term effect of occlusal adjustment on craniomandibular disorders including headaches.

The aim of this study was to assess the short-term effect of occlusal adjustment on craniomandibular disorders. Fifty patients were randomly selected and divided into a treatment (T) and a control (C) group. The initial clinical examination and the follow-up were made by one observer and the occlusal adjustment by another. There were no significant differences between groups with regard to frequency of headaches, facial pain, pain on mandibular function, or duration of headaches and facial pain. Fifty-two percent of the patients in the treatment group and 20% of the patients in the control group reported reduced subjective symptoms overall at follow-up examination. The improvement was statistically significant within the T group and significantly greater than in the C group. There was no significant change within or between groups with regard to frequency of headaches, facial pain, or pain on mandibular movements. There was an almost significant difference between groups after treatment with regard to changes in the number of tender muscles. The results of this study indicate that occlusal adjustment provides a general subjective improvement of craniomandibular disorders.

Adolescent↗
PubMed1991

Short-term effects of intra-articular sodium hyaluronate, glucocorticoid, and saline injections on rheumatoid arthritis of the temporomandibular joint.

The short-term effect (4 weeks) of intra-articular injections of sodium hyaluronate, glucocorticoid, and saline was studied in three groups comprising 41 patients with rheumatoid arthritis of the temporomandibular joint. Sodium hyaluronate and glucocorticoid treatments had a significant positive effect according to the patients' subjective evaluation. A comprehensive clinical dysfunction score was reduced significantly in all groups, while the number of tender muscle regions was significantly reduced and the maximum voluntary mouth opening significantly increased in the glucocorticoid and sodium hyaluronate groups only.

Adolescent↗
PubMed1989

Assessment of occlusal interferences.

The variability in the assessment of occlusal variables was investigated in eight subjects by the repeated registrations of four observers. The following variables were investigated in three different ways: sliding between the RCP (retruded contact position) and the ICP (inter-cuspal contact position) in the sagittal, vertical and lateral plane. Interferences during lateral movements on the working and balancing sides as well as interferences causing deviation of the mandible during protrusive movements were recorded. The intra- and inter-observer error for the measurement of sagittal and vertical distance RCP-ICP was within acceptable limits. There was no significant difference between the three methods used. The intra- and inter-observer agreement between duplicate recordings of the lateral distance RCP-ICP was high and there were no differences between the different measurement modalities. The inter-observer agreement was lower than the intra-observer agreement concerning presence/absence of balancing side interferences, and positive inter-observer agreement was only found on lateral movement more than 3 mm from the RCP or the ICP. The observer error for the variable working side interferences should be acceptable for future research, while the observer error for measurement of lateral deviation of the mandible upon protrusion was somewhat larger.

Adult↗
PubMed1989

Craniomandibular disorders in chronic orofacial pain patients.

Forty-six patients with chronic orofacial pain were examined by a pain group consisting of specialists from different fields of dentistry. More than half of the patients presented a craniomandibular diagnosis. The pain had diminished or disappeared 1 year after treatment in 46% of the patients as a whole and in 39% of the patients with a craniomandibular diagnosis. Fifty-two percent of the patients with no relief of their chronic pain had a psychiatric diagnosis.

Adult↗
PubMed1988

Relationship between clinical and radiologic findings of the temporomandibular joint in rheumatoid arthritis.

The relationship between clinical findings in the craniomandibular system and radiologic findings in the temporomandibular joint was investigated in 101 adults with rheumatoid arthritis. Radiologic changes were correlated with duration and severity of temporomandibular joint symptoms and general joint disease. The radiologic changes were also associated with loss of occlusal support, anterior open bite, and occlusal interferences. Most joints with crepitus exhibited radiologic erosion. Joints with mutilating changes were silent.

Adult↗
PubMed1983

Relationships between oral parafunctions and functional disturbances and diseases of the stomatognathic system among children aged 7-14 years.

Data from an interview and clinical examination in a study of 440 randomly selected school children were analyzed with regard to relationships between signs and symptoms of functional disturbances and diseases in the stomatognathic system. A correlation was found between reported clicking sounds from the temporomandibular joint (TMJ) and pain when opening the mouth wide. Children who had been treated orthodontically or who were undergoing such treatment did not differ from other children in the frequency of signs and symptoms. Correlations were found between recurrent headaches and tenderness in TMJ and TMJ muscles. Reported pain in the temple region was also correlated to tenderness in the TMJ and TMJ muscles. Further correlations were found between recurrent headaches and oral parafunctions such as lip-cheek-biting and nail-biting and also among nail-biting, tooth clenching, tooth-grinding, and frontal dental wear. Children who reported oral parafunctions had more frequent interferences in RP and tenderness in TMJ muscles. There were correlations between irregular movements of the lower jaw and interferences in RP as well as mediotrusion interferences. Finally, a strong correlation was found between tenderness of the TMJ (laterally and posteriorly) and tenderness of the TMJ muscles.

Adolescent↗
PubMed1983

Relationships between oral parafunctions and functional disturbances in the stomatognathic system among 15- to 18-year-olds.

An interview and a clinical examination of signs and symptoms of functional disturbances and diseases in the stomatognathic system were performed on 309 adolescents 15-18 years old. Relationships and differences between data from this investigation were analyzed. Statistically significant correlations were found between headaches, bruxism, and tenderness to palpation of the attachment of the temporal muscle. There were also correlations between occlusal interferences in the retruded position (RP) and clickings and between mediotrusion interferences and clickings. The occlusal interferences were correlated to tenderness to palpation of the TMJ and TMJ muscles. Young people with distal occlusal relation were more frequently conscious of symptoms from the stomatognathic system than those with neutral or mesial occlusal relation. Deep bite was correlated to clenching and frontal dental wear.

Adolescent↗
PubMed1983

Distribution by age and sex of functional disturbances and diseases of the stomatognathic system in 7-18 year olds.

The investigation consisted of 749 randomly selected subjects between 7-18 years of age. The subjects were interviewed for symptoms and oral parafunctions and examined clinically for occlusal interferences, malocclusions and signs of functional disturbances and diseases in the stomatognathic system. The group with one or more symptoms indicated no sex difference but the symptoms showed a gradual increase with age. Recurrent headaches were evenly distributed between the ages, but more commonly reported among girls in the age range 7-14 years. Clickings increased by age and some sex differences were found in the age distribution. Grinding and clenching showed a negative correlation with age. Boys reported clenching more often than girls between 7-14 years of age. Lip-cheek-biting and nailbiting were frequently reported in all ages. Girls in the age group of 15-18 years reported lip-cheek-biting more often than boys of the same age group; who on the other hand reported nailbiting more often. A correlation was found between thumbsucking and anterior open bite.

Adolescent↗
PubMed1981

Prevalence of functional disturbances and diseases of the stomatognathic system in 7-14 year olds.

An epidemiological investigation was carried out in Malmö/Sweden to determine the prevalence of symptoms and signs of functional disturbances and diseases of the stomatognathic system in children aged 7-14. Four-hundred and forty children (440) were randomly selected, interviewed and clinically examined. The interview revealed 36% with symptoms, 15% with recurrent headaches and 13% reported clicking sounds from the temporomandibular joints. Seventy-seven per cent (77%) of the children reported at least one of the following oral parafunctions grinding clenching lip- and cheek-biting, nail-biting or thumb-sucking. In the clinical examination occlusal interferences in RP were found in 79% and mediotrusion interferences in 78%. More than half of the children 64%, claimed pain on palpation of the temporomandibular joint muscles and more than one third (39%) claimed pain on palpation of the temporomandibular joint. It is concluded that children are suffering from diseases and functional disturbances of the stomatognathic system.

Adolescent↗
PubMed1981

Prevalence of functional disturbances and diseases of the stomatognathic system in 15-18 year olds.

Three hundred and nine teenagers were interviewed and clinically examined in an stomatognathic epidemiological study of young people aged 15-18 in Malmö, Sweden. The youngsters were randomly selected. Forty-one per cent (41%) claimed symptoms, 16% recurrent headaches and 17% had noticed clicking sounds from the temporomandibular joints. At least one of following parafunctions: grinding, clenching, lip- and cheek-biting, nailbiting were stated by 74% of the young adults. Occlusal interferences were found in 83% and mediotrusion interferences in 77%. More than half (55%) of the young people exhibited temporomandibular joint muscles tender on palpation and 34% stated that they experienced pain on palpation of the temporomandibular joints. It is concluded that there is a higher prevalence of symptoms among the young adults than among children (Nilner & Lassing 1981).

Adolescent↗
PubMedDate not supplied

Masticatory efficiency and ability in relation to occlusion and mandibular dysfunction in girls.

PURPOSE: This study investigated the masticatory efficiency and ability in girls with normal occlusion and Class II malocclusion. Furthermore, it investigated the association between masticatory efficiency and ability on one hand and signs and symptoms of temporomandibular disorders (TMD) on the other hand. MATERIALS AND METHODS: A total of 183 girls, aged 11 to 15 years, were included in this study. Sixty subjects had normal occlusion and 123 subjects had Class II malocclusion. The examination included registration of signs and symptoms of TMD. Masticatory efficiency was evaluated with a masticatory efficiency test, while masticatory ability was self-assessed on a visual analog scale. RESULTS: Subjects with normal occlusion presented statistically significantly better masticatory efficiency and ability than subjects with Class II malocclusion. Thirty percent of the variation in masticatory efficiency was explained in a multiple regression analysis. Few occlusal contacts and a large overjet predicted a reduced masticatory efficiency. Subjects who reported frequent temporomandibular joint clicking and subjects who estimated their overall symptoms of TMD as moderate or severe also had reduced masticatory efficiency. CONCLUSION: The authors concluded that masticatory efficiency and ability were partly dependent on the occlusion and that symptoms of TMD influenced the masticatory efficiency and ability.

Adolescent↗
PubMedDate not supplied

Occlusal appliance therapy in a short-term perspective in patients with temporomandibular disorders correlated to condyle position.

PURPOSE: The purposes of this study were to compare changes in the condyle-fossa relationship in patients with temporomandibular disorders of arthrogenous origin treated with either a stabilization or a control appliance in a double-blind controlled study, and to compare the changes in the condyle-fossa relationship with the short-term treatment effect in the two treatment groups. The radiographic appearance of the temporomandibular joint was also studied. MATERIALS AND METHODS: Fifty-eight patients with temporomandibular disorders of arthrogenous origin were assigned to two equally sized groups: a treatment group given a stabilization appliance; and a control group, given a control appliance. The study covered 10 weeks. The treatment outcome regarding changes in severity of temporomandibular joint pain on a verbal scale was compared to changes in the condyle-fossa relationship in horizontally corrected oblique lateral transcranial radiographs taken with and without the appliance. Condyle-fossa relationship and structural bone changes were observed before treatment in corrected lateral tomograms. RESULTS: The group treated with a stabilization appliance showed a changed condylar position significantly more often (P = 0.004) than the control group. Of the patients reporting a successful treatment outcome, significantly more (P = 0.006) showed a changed condyle position in the group treated with a stabilization appliance than in the group treated with a control appliance. CONCLUSION: In patients with temporomandibular disorders of arthrogenous origin, the short-term occlusal appliance therapy resulting in a changed condylar position gave relief of symptoms more often than if the condylar position was unchanged.

Adolescent↗