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At least 631 records · Page 35Linked to original sources
PubMedDate not supplied

[The first permanent molars and palatal or mandibular variations].

101 children, each of them with two teleradiographies, were selected. The first X-ray was taken at the time of the mixed dentition, the second one, when the permanent dentition was established. The purpose of the research is to show the oscillations of the palatine and mandibular planes, and their link to the movements of the first permanent molars. The palatine plane is found to swing between -7 degrees and +5 degrees with an average of -0.97 degree. The posterior part of that plane rocks downwards in 51% of the children. The limits are -7 degrees and -1 degree, with an average of -3.2 degrees. In 22%, the plane rocks upwards between +1 degree and +5 degrees with an average of +3.1 degrees. In 27% it moves parallel to itself. The posterior part of the mandibular plane varies between -6 degrees and +5 degrees, with an average of -1.1 degrees. It rocks downwards in 48% of the cases, between -6 degrees and -1 degree with an average of -3.9 degrees. In 22% of the children, this plane rocks upwards between +1 degree and +5 degrees with an average of +2.5 degrees. In 30%, it moves parallel to itself. The overall result is that the more the posterior part of the palate, or of the mandible moves downwards, the more the first permanent molars get straight or move forwards.

Child↗
PubMed1990

Cytochrome c oxidase activity in preosteoclasts induced by experimental tooth movement.

Cytochrome c oxidase activity was detected in preosteoclasts induced by experimental tooth movement. Mitochondria with reaction products of the enzyme in the inner membrane and outer compartment, which we classified as type 1 mitochondria, were observed in preosteoclasts. The number of type 1 mitochondria in the preosteoclasts, however, was distinctly fewer as compared with those in active osteoclasts described in our previous studies. Also, some of preosteoclasts adjacent to the bone surface contained more type 1 mitochondria than preosteoclasts separated from the bone surface. These results suggest that cytochrome c oxidase activity is closely related to functional differentiation of preosteoclasts, and additionally can be used as an indicator of functional differentiation from preosteoclast to osteoclast.

Animals↗
PubMedDate not supplied

[Experience in treating the palatine position of the teeth].

The results of management of the palatine position of the teeth with the use of removable and permanent designs of orthodontic apparatuses are analyzed. The terms of treatment of the palatine position of the teeth with permanent devices differed but little from the terms of treatment with removable devices.

Adolescent↗
PubMed1989

[The treatment of secondary malocclusion in patients with periodontal disease].

The loss of osseous support resulting from periodontal disease is an etiological factor in the development of secondary malocclusions. Correction of these malocclusions demand a) advanced techniques, b) an understanding of the biological situation present in the patient with periodontal disease and c) adaptation of these techniques and forces to the reduced support. According to the treatment of malocclusion there are improvements in plaque accumulation and the distribution of occlusal forces. These factors, maintain the long term health of the teeth and their periodontium. These kind of treatment requires the maximum interdisciplinary collaboration.

Alveolar Bone Loss↗
PubMed1989

[Observation of gaps between the teeth classified by Eichner as type A].

1,030 sets of teeth classified by Eichner as type A (single gap between the teeth) were examined in view to tooth shifting, tipping and periodontal condition on the gap's antagonists and the gap's neighbours. If it is necessary to close the gap with prosthetic means is dependent on the mode of individual reaction which is estimated on a long-term-observation of gap areal (clinical and radiographic). The stability of position of gap antagonist or gap neighbour point to a positive bone factor (by Glickman). Only those cases ought not to treat.

Dentition↗
PubMed1989

[Adjustment of postextraction positional changes of molars].

The author focused his attention on orthodontic adjustment of the consequences of loss of the first permanent molars, a frequent complication during dental treatment. After evaluation of the results he concludes that by treatment with fixed appliances he achieved more reliable results within a shorter time than by removable appliances which were ineffective in many patients.

Humans↗
PubMed1977

[Long-term results in regularly treated and untreated periodontitis patients].

37 patients who were treated 6-21 years ago at the institute, were recalled. The examination revealed that these patients must continue regular dental check-ups and home-care to maintain oral health and retention of the dental apparatus. It is the responsibility of the dentist to put his patients on a regular "recall" system after treatment. Depending on the severity of the case, the control intervals should be from 4-12 months apart. Oral hygiene, pocket depth, function and the hard tissues must be inspected and corrective treatment done where necessary. One time periodontal treatment is of questionable value over a long-time span. Only with regular supervision the dental structures can be retained.

Dental Care↗