Biomedical subjects

K Reithmayer

Publications and source records attributed to K Reithmayer.

3 recordsLinked to original sources

PubMed1991

[Difference reflectometry might permit process control for dental laser applications].

Difference reflectometry is a new method for assessing material surfaces by measuring the relative amount of light reflected within a range of 300-720 nm. The in vivo and in vitro results of the present study indicate that it is possible to transfer this measuring principle to dental applications. Reflexion measurements allow the detection of hard tooth structures and their pathologic alterations with adequate exactness. With the aid of this method it is possible to differentiate between carious hard tissues and clinically healthy tissues by color and surface structure during excavation. It also allows a reliable demarcation from oral soft tissues. Due to its high measuring frequency it may be used as on-line process control. In contrast to other spectrometric methods it requires a minimum of equipment and is easy to handle.

Dental Caries↗

PubMed1990

[A procedure for testing local anesthetics].

A method for testing intensity and duration of the effect of local anaesthetics is presented. The assessment of effectiveness is based on the subjective perception threshold after painful electrical tooth pulp stimuli. With respect to its practical applicability the method is tested in a clinical study using three commercial local anaesthetics. The results prove the possibility of giving reproducible and quantitative statements concerning the time course and intensity of anaesthesia. Using this method, only a restricted number of subjects is necessary for estimating the differences in the basic features of different local anaesthetics.

Acetanilides↗

PubMed1990

[Vitality tests of the tooth pulp using laser Doppler flowmetry].

Laser-Doppler flowmetry allows a non-invasive assessment of the microcirculation in circumscribed tissue areas. However, measurements in intact human teeth prove to be extensive, as far as instrumental equipment and time requirements are concerned. Therefore we developed an application system which allows us to transfer the principle of measurement under clinical conditions. Thus we were able to prove that the signal recorded can be regarded as a specific expression of pulpal microcirculation. A comparison between vital teeth and root-filled teeth shows that the signal to noise ratio is sufficiently high to allow a definite assessment of pulp vitality.

Dental Pulp↗