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At least 1,729 records · Page 96Linked to original sources
PubMed1991

Magnetic resonance imaging and tomographic evaluation of occlusal appliance treatment for advanced internal derangement of the temporomandibular joint.

This study evaluates the positional relationship of the disc and mandibular condyle in patients with late opening clicks treated with appliance therapy. A total of 30 joints (18 patients) were studied. Twenty-seven of these 30 joints were treated with the appliance until the joints were silent to auscultation. The patients were then evaluated with axial corrected tomography and magnetic resonance imaging (MRI) in the centric occlusion position and with their bite appliance (Sved-type) in place. Comparisons were made between condyle position in centric occlusion and with the appliance in place. Magnetic resonance imaging was then used to evaluate disc positional changes. Each imaging procedure was made in the same sagittal plane. Only changes in condyle positioning could be identified. Evidence of disc repositioning with the appliance in place was seen in only three MRI examinations. The remaining 27 joints continued to exhibit disc displacement with various changes in disc morphology. It is concluded that the concept of "disc capture" is a clinical term only, and that such perceived clinical success should not lead to the assumption that an actual change in intra-articular anatomic relationships has occurred. Joint noises may decrease because joint space is increased, allowing smoother condylar translation beyond disc surface irregularities and positional abnormalities.

Cartilage, Articular↗
PubMed1975

Experiments with unilateral bite planes in rabbits.

1. Insertion of bite planes on the right mandibular lateral teeth of eight young rabbits caused load changes in the masticatory system. Eight other animals served as controls. 2. The induced changes were equilibrated during the nine-week experimental period by adapation processes. At the end of the period all teeth were in occlusion and the glenoid fossa-condylar process distance was equal on both sides. 3. The adaptation was the result of several mechanisms working together. We found changes in the alveolar region and at distant growth structures. Cranial scolioses were observed. 4. Masticatory functional loading is a factor which regulates growth in the region of the facial skeleton.

Adaptation, Physiological↗
PubMed2006

Surgery of the nasal septum.

Long-term results after septoplasty are not satisfactory. Apart from a recurrence of deviation, there are various reasons for this: false preoperative analysis, complete straightening of the septum, and a disturbed nasal cycle. Preoperative functional diagnostics with a combination of rhinoresistometry, acoustic rhinometry, and long-term rhinoflowmetry are necessary for differentiating between "physiological" and "pathological" septal deviations and recognizing other causes for obstruction. The surgical procedure of septoplasty includes approach, mobilization, resection, reposition, and finally reconstruction of all three layers. The goal of the operation should not be complete straightening of the nasal septum. The space between the septum and turbinates is of utmost importance. It should not be enlarged as much as possible; rather, it must be shaped in such a way as to allow freely congestion and decongestion reciprocal on the two sides during the nasal cycle.

Humans↗
PubMed1979

Short term evaluation of counselling and occlusal adjustment in patients with mandibular dysfunction involving the temporomandibular joint.

The effect of counselling and occlusal adjustment was investigated in thirty patients with mandibular dysfunction involving the temporomandibular joint (TMJ). The patients were examined at three visits 6 weeks apart. At the first visit all patients received counselling. At the second visit they were divided into two groups, one receiving occlusal adjustment and the other not receiving treatment. The degree of mandibular dysfunction was assessed by the patients according to a five grade scale and by the clinical dysfunction index according to Helkimo (1974a). The score of subjective dysfunction was reduced significantly during the period following counselling and 60% of the patients improved. No effect was found on the clinical dysfunction score. The score of clinical dysfunction was reduced significantly during the period following occlusal adjustment and 67% of the patients improved. No further effect could be detected on the subjective dysfunction score. The correlation between changes in subjective and clinical dysfunction was poor, but changes in the subjective score were generally associated with changes in the clinical score. It was concluded that counselling may reduce the subjective symptoms; and occlusal adjustment the clinical signs of mandibular dysfunction involving the TMJ, but that the individual variation in response is substantial.

Adolescent↗
PubMed1991

Sved appliance.

The Sved appliance filled Dr. Bill Farrar's requirements for an appliance that could provide temporomandibular joint support while allowing rearranging of posterior teeth. In this chapter the author draws from his long professional relationship with Dr. Farrar and his own clinical experience to give a detailed account of the use of the Sved appliance and the philosophy behind it.

Age Factors↗
PubMed1991

Musculoskeletal etiology and therapy of craniomandibular pain and dysfunction.

A number of diverse symptoms, conventionally diagnosed and treated as individual problems, exist in combination in the craniomandibular pain and dysfunction patient. This chapter explores musculoskeletal dysfunction of the area as a common etiologic factor for head and neck pain. The electronically derived data, reported in 68 case histories, indicate that a common measurable etiology is responsible for the many ostensibly diverse manifestations of craniomandibular pain and dysfunction. Both quantitative and subjective data support the etiologic validity of the diagnosis. The basis for the effectiveness of the reported therapy rests on diagnosis of a skeletal malrelation of the mandible to the cranium that poses sustained accommodative demand on the neuromusculature.

Dental Occlusion↗
PubMed1979

[Myoarthropathies: findings and therapy].

Im myoarthropathies the interplay of the functions of articulation, mandibular joints, muscles and periodontium is disturbed. They are due to occlusal disorders. The oral examination is carried out according to Krogh-Poulsen. The therapeutic procedure involves three steps. Step 1 : elimination of gross occlusal disorders. Step 2: elimination of occlusal disorders after recording of the jaw relations and model analysis on the articulator. Step 3: prosthetic treatment.

Arthritis↗
PubMed1979

Ostectomy in the mandible.

Fourteen patients, diagnosed as cases of apertognathism, were subjected to ostectomy in the premolar or molar region on both sides. The operations were made with an intraoral approach in the premolar region anterior to the molar foramen and extraorally in the molar region. The mandibular segments were immobilized by cap-splints after the operations. A follow up, clinically and roentgenologically, was made after the splints had been removed and, in addition, one and five years later. The aesthetic as well as the functional results of the operations were very good. Only minor changes in the occlusion occurred during the follow up period. In a few patients minor unilateral decreases of sensibility were observed. The late results of the operations must therefore be regarded as good.

Adolescent↗
PubMed1987

The sleep-wear syndrome.

This article acknowledges sleep-wear phenomena and suggests research to study the correlation between sleeping postures and nocturnal bruxism through scientific studies. After the bruxers have been identified, the baseline muscle activity, bruxing movements, and sleep position data can be recorded. Individual treatment can be instituted in a sleep laboratory as follows: Some patients can be dismissed without treatment and others may merely need counseling in modification of sleep postures. Selective occlusal adjustment of centric relation closure interferences may be performed in some patients to test the influence of deflective contacts on nocturnal bruxism. Some patients may require the restoration of canine disclusion with composite or a bruxism splint, or both. Combinations of treatment could be performed and compared. These studies would enhance the understanding of the interaction between nocturnal bruxism and sleep postures, adding useful knowledge to the field of preventive dentistry.

Bruxism↗
PubMedDate not supplied

Assessment of full-thickness wounds in the genetically diabetic mouse for suitability as a wound healing model.

While using the diabetic C57BL/KsJ db/db mouse as a wound healing model, we encountered several repair patterns which affect its suitability as a predictive screening model for certain indications. For example, wound contraction, albeit impaired, was found to be particularly dependent on bandaging technique and vehicle type. Wounds which had been continuously occluded with Opsite dressings had a high relative variability in contraction, and there was a tendency toward reduced contraction, suggesting that the dressings were acting as a splint. Viscous dosing vehicles inhibited contraction of occluded wounds but appeared to enhance contraction of nonoccluded wounds. In contrast to many other models, occlusion in these studies did not enhance reepithelialization when compared with air exposure (the rate of reepithelialization in db/db mice appeared normal, typically growing 2 mm from each edge in 10 days). Also in contrast to other wound healing models, viscous dosing vehicles when used under occlusion inhibited reepithelialization. However, as seen in other wound healing models, granulation tissue thickness was reliably increased in response to treatment with recombinant human platelet-derived growth factor-BB. Our experience with the db/db diabetic mouse model has led us to recommend the use of this animal model only after its limitations have been identified and accepted.

Journal Article↗
PubMed2003

Immediate functional loading of Brånemark System implants with enhanced initial stability: a prospective 1- to 2-year clinical and radiographic study.

BACKGROUND: The interest in the benefits of immediate loading of titanium implants has recently involved fixed prostheses for partially edentulous areas. The advantages of this approach well justify the need for extending the procedure to all regions of the mouth. Current available clinical literature on this subject is incomplete. PURPOSE: The purpose of this study is to investigate the clinical outcome of the immediate loading of Brånemark System implants (Nobel Biocare AB, Gothenburg, Sweden) inserted with enhanced initial stability principally in posterior sites (78%). MATERIALS AND METHODS: The present study was conducted in 26 consecutively treated patients. A total of 50 Brånemark System machined surface implants were placed supporting 30 fixed temporary partial dentures in light occlusion. All implants were followed up for a minimum of 1 year of function. Minimum requirements for immediate loading were proposed. Bone quality and quantity were classified according to Lekholm and Zarb's criteria. Stability of the marginal bone level, both mesial and distal, was measured on the basis of radiographic analysis. Implant survival rate was calculated according to Kaplan-Meier analysis. The peak insertion torque employed during fixture placement was between 40 and 72 Ncm, except in the case of one implant that was lost. RESULTS: Overall survival rate was 98%. An unpaired t-test revealed bone remodeling conforming to biologic width establishment (p <.005). CONCLUSIONS: Within the limit of this study, immediate loading appears to be a viable procedure in posterior sites and for a growing number of clinical indications. Enhanced implant stability and light occlusion seem to be security factors. In spite of unfavorable conditions such as the presence of quality 4 bone and a lack of splinting, all implants with enhanced primary stability survived.

Adult↗