Biomedical subjects
Publications and source records attributed to K Hertrich.
A single mandibular incisor and an unusually narrow mandible and tongue were noted in an 8-year-old moderately retarded boy with 18p- (45, XY, der dic (18) (18qter-p11.2::22p 11.2-qter). While a single maxillary incisor, considered a minor feature of holoprosencephaly, was reported in three cases of 18p-, reduction of mandibular incisors has been a very rare finding and has never been noted in similar cases.
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80 children and teenagers at the age of 3 to 14 years with isolated TMJ fractures were only treated by means of functional orthodontic appliances. After an average period of 3 years after the fracture they could be followed-up clinically, as well as radiographically. TMJ function turned out to be good in all patients. The morphological regeneration was often incomplete in older the patients and especially in deep dislocation fractures.
In the absence of pain or dental findings, incapacity to open the mouth fully, concomitant with a typical restriction of movement of the fingers is defined as the trismus-pseudocamptodactyly syndrome. This autosomal dominantly inherited feature is quite rare. So far only affections of families in the USA, the Netherlands, Canada and, recently, Japan, have been reported in the literature. Now, a German case affecting six members of the same family has been found for the first time. An important factor to be considered in the differential diagnosis of painless chronic trismus, this syndrome is described here.
UNLABELLED: 49 treated adult patients with deep-bite were classified by analysing orthodontic models and lateral cephalograms differentiating skeletal, dento-alveolar deep-bite and class I, class II-1, class II-2 malocclusion. Change of overbite and position of incisors were described within every group and compared with the other groups. RESULTS: On the average overbite decreased about 3.5 mm, mostly however combined with root resorptions in the maxillary front. After removing the appliance overbite relapsed about 1.7 mm at 93.3% of cases. The percentage of factors which made possible a decrease of overbite was described and parameters which caused the relapse were discussed. Interpreting the results of orthodontic treatment in adults, it seems to be legitimized in some exactly indicated cases but, treatment in adults is not the best time for correcting deep-bite.
Own experience with an orthodontic treatment stimulated us to interview patients out of retention about four topics concerning their opinion and experience: 1. Reasons for treatment, 2. doubts about treatment, 3. troubles during treatment, 4. attitude to the result of treatment. 50 adults, former patients of the Department of Orthodontics at the Erlangen-Nürnberg University, responded our questionnaire. Aesthetics range first in the patient's desires for treatment. Severe doubts about treatment rarely occurred before treatment. The occurrence of particular complaints cannot be predicted and does not show a characteristic distribution. Pain, induced by treatment generally was underrated. For unpredictable severe pain may occur, one might consider to review the treatment goals critically after the patient's own experience with orthodontic treatment.
The influence of intrusive forces on the periodontal microcirculation exerted as conventional through brackets on the teeth is demonstrated with laser Doppler flowmetry. This noninvasive method shows that forces of 0.1 N on the human upper incisor cause a decrease of the periodontal perfusion of 20% which shall regain its initial level after 50-80 seconds. With an intrusive force of 0.5 N the perfusion decreases 42% within two to three seconds, which however shall not even regain its original level after ten minutes. Immobilisation of the teeth and infiltrative anaesthesia with vasoconstrictor were carried out in order to specify these measurements.
No unusual variations were found in the skeletal age of 38 female and 78 male patients with clefts of the lip and palate at the time of orthodontic treatment. The patients were divided in groups according to gender and severity of the cleft. In all groups a tendency towards over-average growth was found, which manifested itself rather in adulthood than at the time of orthodontic treatment. The mean height of adult women was 165 cm, 3 cm more than the average values found by Tanner. The mean height of men was 180 cm, i.e. 6 cm more than the corresponding values of Tanner. Only one man showed a body height of less than the third percentile, although he had been within the normal range during orthodontic treatment. Two girls rated below the third percentile during orthodontic treatment, but later grew up to the normal range of height. Hence it may be concluded that dwarfism is not among the factors that must be expected in the orthodontic treatment of cleft lip and palate patients.
Patients suffering from dysmorphophobia with symptoms involving the masticatory system, i. e. teeth, mouth and jaws, were subjected to comprehensive examinations in close cooperation with the psychiatric profession. In rare cases the problem underlying the urgent desire for treatment in difficult patients is a disease known as dysmorphophobia. The signs of this disease that become evident in the dental office and the specific personality features of the patients affected are described and demonstrated in three typical case reports. Our experience has shown that irreversible and isolated dental manipulations are to be avoided. An interdisciplinary treatment objective (besser: approach?) integrating dental treatment into a greater therapeutic context is proposed.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.