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Biomedical subjects

K Kess

Publications and source records attributed to K Kess.

8 recordsLinked to original sources
PubMed1993

[The interrelationships between dental parameters and electronic axiographic findings. A study on subjects with nonphysiological incisor relations].

The purpose of the present study was to discern possible relationships between dental parameters and the horizontal inclination of the condyle path. Two test groups of orthodontically untreated individuals with non-physiological incisor relationships, one group with enlarged and the other with reverse overjet, were selected for the study. An opto-electronic apparatus was employed to measure the horizontal inclination of the condyle path. The dental parameters were set by clinical examination and by measuring plaster casts. Both groups exhibited significant distribution deviations in the inclination of the condyle path and in the following parameters: "occlusal contacts of the front teeth during protrusion", "overbite", "resulting overjet", and "sagittal and vertical distance of the incisal edge of the lower incisors to the zero point of the upper incisors". Statistically no correlation between the dental parameters and the inclination of the condyle path was discerned. The influence of muscular guidance is in large measure the determining factor for the large variations in the TMJ registrations, and especially in their quantitative evaluation. The results were the same even when tracings were repeated a number of times with the same patient.

Adult↗
PubMed1992

[The use of the T-Scan system in occlusal diagnosis].

The present study examines the T-Scan reproduction system used in occlusal diagnosis. The system represents a major technical innovation in functional diagnostics. Nevertheless, various aspects of it still require improvement. Amplifying or confirming the results of previous studies, the following observations are intended to indicate how the system might be improved, and how it can be reliably used at present: The reproduction afforded by the sensor as situated in the mouth is insufficient. Exact reproduction of the topography of the occlusal contacts is not possible. Reproducibility of the temporal sequence of the contacts is slight. The registering of dental functional movements can give rise to errors of interpretation. Threshold values for the registration of contact points in the system's pressure mode are uneven. The relative reproduction of different impressions is unreliable. Since in the system's pressure-mode early contacts cannot be distinguished from strong physiological contacts, in clinical practice the former must first be identified using the time-mode.

Bite Force↗
PubMed1991

[The long-term results in orthodontic closure of a gap in the anterior teeth--the functional status].

In a follow-up study, the functional and occlusal status of patients after orthodontic space closure of missing incisors is compared with those who were not orthodontically treated. The investigation involved a method of instrument registration of TMJ function. The findings show that occlusion of our former patients in various mandibular positions is slightly different from ideal occlusal concept and we found no increased functional risk in this kind of treatment. In cases with missing incisors, orthodontic space closure that avoids prosthetic procedures should be taken into consideration.

Adult↗
PubMed1991

TMJ function with and without orthodontic treatment.

In order to evaluate the functional status of the stomatognathic system of former orthodontic patients, a review of current literature is given. In addition, a sample of orthodontically-treated subjects and a control group was investigated by means of clinical functional analysis. The figures found in the literature and the results of this study failed to reveal orthodontic treatment as a frequent cause of stomatognathic dysfunction symptoms. Instead, we found the functional status and occlusal parameters of our former orthodontic patients to be more harmonious than in the control group.

Adult↗
PubMed1990

[Age-dependent soft-tissue changes in the face].

A sample of class-II-cases, who refused orthodontic treatment, was examined cephalometrically before, during and after the pubertal growth spurt. The profile of the individuals examined became more retrognathic inspite of the enormous growth of the chin. The growth pattern of the facial soft tissue emphasized nose and chin prominence. The nose lengthened and thickened, the nasolabial angle decreased. The relation of upper and lower lip worsened.

Adolescent↗
PubMed1989

[The vertical position and axial inclination of the wisdom teeth. An x-ray study].

In a roentgenographic study we considered the question as to whether the vertical position and inclination of third molars is influenced by orthodontic treatment. Normal inclination and correct vertical relationship of the third molars to the occlusal plane was found more frequently in those patients who received orthodontic treatment - for space closure following extraction or agenesis. There is less likelihood of impacted/displaced third molars in cases where extractions have been carried out as posteriorly in the arch as possible and the resulting space (including space from congenitally absent teeth) has been closed. In Angle class II malocclusions, the maxillary third molar erupted more often into a good position, whereas in the class III malocclusions the mandibular third molars were more reliable.

Adult↗