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Biomedical subjects

I Peroz

Publications and source records attributed to I Peroz.

13 recordsLinked to original sources
PubMed2006

[Stress, coping, and craniomandibular disorders].

BACKGROUND: Stress is an etiologic factor of pain-relevant craniomandibular disorders (CMD). Interindividual differences in coping with stress and their relation to CMD have rarely been examined. PATIENTS AND METHODS: A total of 72 volunteers (20 men, 52 women) were examined according to the Research Diagnostic Criteria for Temporomandibular Disorders. Stress parameters and coping skills were assessed by questionnaires. RESULTS: Stress and one coping factor are correlated with CMD indices. Linear regression analysis found the Life Event Score and cognitive coping by changing appraisals to significantly predict CMD. CONCLUSION: Stress and coping skills are independent predictors of CMD.

Adaptation, Psychological↗
PubMed2005

[Morphometric analysis of the temporomandibular joint with MRI in 320 joints].

PURPOSE: To compare several morphometric parameters in MRI with the functional status of the articular disc in a large patient group suffering from internal derangement (ID) of the temporomandibular joint (TMJ). MATERIALS AND METHODS: In a retrospective study, 320 analyzable high resolution MRI examinations of the TMJs obtained in a 1.5 T unit were evaluated in 184 patients with clinically suspected ID. The analysis included the anatomical structures and a number of morphometric parameters previously described in the literature. The parameters were compared with the position of the articular disc. RESULTS: The disc position was categorized as "normal" (NDP, 21.9 %, n = 70), "anterior displacement with reduction on opening" (AMR, 51.6 %, n = 165) and "anterior displacement without reduction on opening" (AOR, 26.6 %, n = 85). With increasing disc displacement, significant configurational changes of the disc were observed. Disc displacement was associated with changes of the condyle consisting of increasing deformity and other degenerative changes. A large tuberculum and marked inclination of the eminence can be seen as predisposition for the development of ID. With increasing severity of the ID, the position of the condyle moved from a centric position of the condylar center to an excentric (dorsal and cranial) position. CONCLUSION: MRI demonstrated that increasing disc displacement is associated with changes of the disc, condyles and condylar position in the fossa.

Cartilage, Articular↗
PubMed2004

Dentocase - open-source education management system in dentistry.

Since 2001, an interdisciplinary project on multimedia education in medicine has been sponsored by the Federal Ministry of Education and Research at the Charité. One part of the project is on dentistry. In the light of the results of a survey of dental students, an Internet-based education management system was created using open-source back-end systems. It supports four didactic levels for editing documentation of patient treatments. Each level corresponds to the learning abilities of the students. The patient documentation is organized to simulate the working methods of a physician or dentist. The system was tested for the first time by students in the summer semester of 2003 and has been used since the winter semester of 2003 as part of the curriculum.

Computer-Assisted Instruction↗
PubMed2003

[Dysfunctions of the stomatognathic system in tinnitus patients compared to controls].

AIMS OF THE STUDY: The high prevalence of ear, nose and throat symptoms in patients with temporomandibular disorders seems to depend on anatomical, functional, neuromuscular, or psychosomatic connections between both phenomena. The present study evaluates the prevalence of temporomandibular dysfunctions in tinnitus patients compared to controls. PATIENTS AND METHODS: A total of 40 patients and 35 controls were clinically examined. The case history as well as the quality of tinnitus and its influence on the patient's life were evaluated, and psychosocial data collected by a questionnaire dealing with stress factors. RESULTS: Tinnitus patients showed muscle tenderness in masticatory muscles as well as in other muscle groups significantly more frequently than controls. The prevalence of arthrogenous dysfunctions was not significantly different between the groups. Occlusal parameters such as instability of intercuspidation, presence of dysgnathia, and signs of parafunctions were significantly more frequent in patients than in controls. The psychosocial assessment showed some trend towards the tinnitus patients feeling more stress in society, daily life, their partnerships and at work. CONCLUSIONS: Tinnitus correlates significantly with myogenous disorders but not with arthrogenous disorders of the temporomandibular joint (TMJ). This result supports the concept of neuromuscular and functional relationships between tinnitus and the stomatognathic system.

Adult↗
PubMed2002

Osteochondroma of the mandibular condyle: a case report.

A case of osteochondroma of the right mandibular condyle in a 47-year-old woman is presented. Instead of condylectomy, surgical resection was performed, resulting in fewer functional changes and less dysfunction of the temporomandibular joint but recurrence within 12 months after surgery.

Female↗
PubMed2001

[Otalgia and tinnitus in patients with craniomandibular dysfunctions].

AIMS OF THE STUDY: The high prevalence of ear, nose, and throat symptoms in patients with craniomandibular disorders seems to depend on the connection between both phenomena. The present study evaluates the connection between craniomandibular disorders (CMD) and otalgia or tinnitus, investigates the correlation between specific diagnoses of CMD with otalgia or tinnitus, and estimates the effects of treatment of CMD on these ear symptoms. PATIENTS AND METHODS: The information from case histories, clinical examinations, and treatment results of 221 patients with CMD were coded and evaluated by computer. All patients received conservative treatment with occlusal splints, training in self-observation of parafunction, massage of the masticatory muscles, and heat therapy. At least 1 year after the first examination, all patients were reevaluated. According to their complaints, the patients could be divided into three groups: (1) CMD patients without ear symptoms (n = 134 = 61%), (2) CMD patients with otalgia (n = 80 = 37%), and (3) CMD patients with tinnitus (n = 8 = 3.8%) (one patient with tinnitus and otalgia). RESULTS: Otalgia correlated significantly with CMD and the specific CMD diagnoses of anterior disk displacement (ADD) without reduction and osteoarthrosis. Of the reevaluated patients with otalgia, 90% had no ear pain and 10% reported reduced or less frequent ear pain. Only one of the eight cases with tinnitus noted reduced noises; the remaining seven perceived no influence on their ear noises from therapy. CONCLUSIONS: Due to the treatment results, otalgia has to be interpreted as a possible symptom of CMD and not as a separate diagnosis.

Adult↗
PubMed1991

[Impression disinfection--clinical tests].

In a series of tests was proved that the disinfection of impressions could be performed without significant dimensional changes of the impressions or loss of quality of the gypsum casts. There still exists, however, certain reservations among dentists and dental technicians to disinfect impressions routinely. Therefore the clinical effects of the disinfection of impressions have been tested. In total 248 impressions were tested, 138 were not disinfected, 110 were immersed for 15 minutes in a 2.5% solution of glutardialdehyd (Cidex). Lateron was controlled if the disinfection had an influence on the correct fitting of the fixed prosthodontics. As the result, the disinfection of impressions can be definitely excluded to be the course for incorrect fitting.

Dental Impression Materials↗
PubMed1990

[Polymerization shrinkage of denture resins in different preparation procedures].

The Intention of this study was to examine and compare the effect of three different polymerization systems on the dimensional changes of denture-resin. The development of the fissure has been measured at five fixed points at the posterior border of upper complete dentures after a 4-weeks'-storage in water and saliva respectively. The perform-Inkovac-System showed the best, the SR-Ivocap-System the most unfavorable results; the conventional "stuff-press-system" gave only medium satisfaction.

Denture Bases↗