ABSTRACT
Due to a new removable and compatible mass storage media, the ultimate model of the RadioVisioGraphy (RVG) system for X-ray recording without films offers an adequate possibility to store images as well as an easy way to transfer these data to other personal computers for digital image processing. By experiment we demonstrated a digital image subtraction procedure with public domain software, simulating a situation before and after apicoectomy. The result shows a good quality with a favourable relation between signal and noise.
Subject(s)
Image Processing, Computer-Assisted/instrumentation , Radiographic Image Enhancement/instrumentation , Radiography, Dental/instrumentation , Apicoectomy , Color , Evaluation Studies as Topic , Humans , Microcomputers , Models, Structural , Software , Subtraction Technique/instrumentation , Tooth/diagnostic imaging , Video Recording/instrumentationABSTRACT
In an experimental investigation of 20 subjects who had no amalgam fillings, the mercury load from artificially applied, standardised amalgam surfaces was tested for one product containing gamma-2 and one free of gamma-2 respectively. The product which contained gamma-2 caused a statistically significant increase in Hg concentrations in the 24-hour urine sample. After challenge with Dimaval, an intensifying effect on the elimination rate could be detected, although all values clearly remained below a toxicologically relevant concentration. In order to avoid unnecessary exposure to heavy metals, the use of gamma-2-free amalgams and, in the long term, the development of optimised filling materials and intensification of prophylactic measures for prevention of dental caries are to be welcomed.
Subject(s)
Dental Amalgam/pharmacokinetics , Mercury/pharmacokinetics , Administration, Oral , Adult , Dental Amalgam/analysis , Female , Humans , Male , Mercury/urine , Spectrophotometry, Atomic , Time Factors , UnithiolSubject(s)
Ambulatory Surgical Procedures , Anesthesia, Dental , Conscious Sedation , Nitrous Oxide , Adolescent , Adult , Anesthesia, Inhalation , Child , Female , Humans , Male , Middle AgedABSTRACT
Surgical interventions involving the temporomandibular joint are subject to strict indications. It further requires the exhaustion of all conservative treatment possibilities before operative procedures are considered. This case report involves a patient with an impressive TMJ dysfunction. After a series of frustrating attempts at functional treatment, surgical intervention was finally decided. Under general anesthesia however, the patient examination showed not even the least pathologic change in the passive joint function. Besides considering the discrete signs of possible psychiatric-psychosomatic causalities for such alterations, it seems to us that a temporomandibular joint examination under general anesthesia in such suspected cases has a diagnostic and therapeutic significance.
Subject(s)
Temporomandibular Joint Disorders/diagnosis , Adult , Anesthesia, Dental , Anesthesia, General , Diagnostic Techniques, Surgical , Female , Humans , Psychophysiologic Disorders/diagnosis , Temporomandibular Joint Disorders/psychology , Temporomandibular Joint Disorders/surgeryABSTRACT
52 patients aged between 5 and 19 years with a total of 68 collum fractures were examined in a clinical, radiological and sirognathographical follow-up study. Except for the luxation fractures of the upper collum there was no significant difference in the results of immobilisation therapy (77%) and functional therapy. Only in the case of collum luxation fractures were our X-ray findings less positive. Patients under the age of 15 showed a better tendency for restitution.