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PubMed1991

An investigation of the displacement of fixed bridges and their abutments under occlusal load in Monkeys (Macaca Fascicularis).

Previous investigations have established the displacement characteristics of the teeth under axial load in monkeys (Macaca Fascicularis). The methods employed in these investigations have been used to study the displacements under occlusal load of both conventional fixed bridges and cantilever bridges, having different numbers of abutments. Under axial load there was a reduction in displacement when two teeth were splinted together to act as abutments to a fixed bridge compared with the displacements of the individual teeth. Loading on the pontics of the cantilever bridges showed the greatest displacements and caused tipping forces in the abutments. Recommendations that a cantilever bridge should replace only one unit and have not less than two abutments are supported.

Animals↗
PubMedDate not supplied

Functional disturbances of the masticatory system in school children.

The centralization of treatment for functional masticatory disturbances by the Copenhagen Municipality Children's Dental Service has made possible the present survey of symptoms and results of treatment in a child population. Over a period of four years, a total of 366 children, aged six to sixteen (two thirds girls), were referred for treatment. Their symptoms differed from those reported by adult patients by a marked attrition of the mandibular incisors and concomitant sensitivity to thermal and mechanical stimulation. Other symptoms of functional disturbance, such as reduced mandibular mobility and muscle tenderness, were similar to those reported for adult subjects. Treatment conformed to conventional principles with widespread use of soft bite-splints (Figure 5). Both symptoms and signs were eliminated in about 60 percent of the patients, while 34 percent were essentially symptom-free at the conclusion of treatment. The survey showed that functional disturbances in the mandibular apparatus occur in children, and that many can be treated with good results. The symptomatology, however, resembles that of a wide range of other ailments, especially with respect to headache and facial pain, necessitating a careful differential diagnosis before functional corrective treatment is started.

Adolescent↗
PubMed1981

Etiology and treatment of occlusal pathosis and associated facial pain.

The treatment of occlusal pathosis and associated facial pain is a difficult and complex problem. The interaction of two etiologic factors, occlusal interferences and psychologic stress, results in parafunctional activity. The most important prerequisite to selection of a treatment method is an understanding of the etiology of the problem. What dentistry needs is a mechanism by which the major etiologic factor of parafunctional activity can be identified for each patient. Treatment can then be directed toward the reduction or elimination of that factor. When treatment is directed toward the major cause of the problem, the likelihood of success will increase greatly. Continued research on this problem will yield new insights and means for the accurate determination of the etiology of parafunctional activity for each patient.

Dental Occlusion↗
PubMed1984

Functional adaptation to changes in vertical dimension.

The traditional concept of PP stability defies neurophysiologic explanation. Conversely, the hypothesis presented to explain the rapid adaptation of jaw elevator postural tonus to sudden change of vertical dimension is in accordance with research of automotized motor behavior. Furthermore, there is no logical reason to believe that maladaptive reactions develop after prolonged procedures that increase the vertical dimension of occlusion. Rather, Goldspink reports that within a few weeks complete normalization probably occurs. Jaw muscle motor behavior is more dynamic and adaptable to environmental changes than has been believed.

Adaptation, Physiological↗
PubMed1986

Long-term results of treatment for temporomandibular disorders: an evaluation by patients.

In this study, 110 patients with temporomandibular disorders who had been treated 2 to 81/2 years earlier were asked to evaluate the treatment they received. Of the patients, 85.5% reported that they were not experiencing pain or that they were experiencing much less pain; 79.1% reported that the treatment they had received had helped them completely or considerably. Analysis of the data did not disclose a subgroup or factor that could be correlated with the reduction of pain or the patient's perception of the success of treatment.

Adult↗
PubMed1978

Movement of the proximal and distal segments after mandibular ramus osteotomies.

Data was collected from 27 patients who were treated with various ramal surgical procedures. Movements of the proximal segment during and after surgery were frequently noted. If the proximal segment was moved from its preoperative position and fixed to the distal segment, occlusal relapse was visible shortly after release of maxillomandibular fixation. Proximal segments displaced during surgery and not fixed to the distal segment frequently returned to their preoperative positions during fixation or assumed positions of biologic equilibrium. In such cases, occlusal relapse was minimal or nonexistent.

Adolescent↗
PubMed1990

[Craniomandibular disorders management (1) Treatment planning].

Various treatment modalities have been reported in the management of the craniomandibular disorders in the half century after Costen reported his hypothesis on the temporomandibular disorders. Recent advances in the basic sciences such as anatomy, histology, pathology, physiology and clinical trials have brought us to this new era. We have been trying to establish our diagnosis and treatment modalities in the management of the craniomandibular disorders over the past fifteen years. In this series of articles we will describe our present concept. We will first discuss diagnosis and treatment planning. After the diagnosis and initial treatment planning craniomandibular management is usually divided into two phases. Phase I is the treatment of the stomatognathic system especially the temporomandibular joint. Behavioral modification and physical therapy and splint therapy are the most common forms of treatment. Sometimes, surgical treatment is required. Phase II is the compensatory phase of the occlusion consisting of occlusal equilibration, occlusal restorations, orthodontic treatment and gnathic surgery if needed. Another phase we like to add is maintenance. In this phase, home therapy, corrective follow-up and long term observation should be emphasized. The motivation of the patient throughout the management of the craniomandibular disorder (phase I, phase II and the maintenance phase) is essential to reach to a successful result.

Behavior Therapy↗