Periotest

dynamically diagnosing the human periodontium and the dental implant-bone interface

References: ... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001...

Zur parodontalen Diagnostik mit dem Periotestverfahren - eine klinische Querschnittsuntersuchung
KOCHER, T., FRÜHLING, U., PLAGMANN, H.C., (Kiel),
Dtsch Zahnärztl Z 47, 387-390 (1992).
1170 Zähne von je 50 Patienten vor und nach systematischer Parodontalbehandlung. Regressionenkoeffizient a (Achsenabschnitt) PTW-Knochenabbau (Mundfilm) der Recallgruppe signifikant kleiner, b (Steigung) gleich. Hinweis, dab PT neben Attachmentverlust noch von anderen Faktoren beeinflubt wird, die mit bisherigen Diagnostischen Verfahren nicht erfabt werden. Regressionen Klinischer Attachment, Zahnbeweglichkeit, PTW, Röntgen- Knochenabbau. PTW mit Rö am stärksten korreliert: 0,67. "The results have shown that apart from the quantitative factor bone losss the PT includes other, qualitative factors, as well"

Zur Aussagekraft verschiedener klinischer Untersuchungsparametern hinsichtlich der Desmodontaloberfläche
KOCHER, T., SCHNEIDER, C., PLAGMANN, H.C., (Kiel),
Dtsch Zahnärztl Z 47, 391-394 (1992).
120 Zähne von 37 Patienten. Orthopantogramme für Knochenabbau KN in %. Attachmentverlust mit druckkalibriertes PA-Sonde TT. Desmodontaloberfläche nach Extraktion bestimmt DF in %. Korrelationskoefizient: TT-KN 0,77; TT-DF-Verlust 0,82; PTW-DF- Verlust 0,64; PTW-DF -0,46. Folgerung: PT erfabt nicht nur Desmodontfläche. "These results suggest that there are other, qualitative factors beyond loss of periodontal attachement that paly a role in the PT and cannot be assessed with the current diagnostic parameters"

Traditional periodontal parameters and the implant patient
LORD, B.J.,
Pract dent Hyg Nov/Dec, 23-26 (1992).
...the Periotest computer provides an objective and easy method for evaluating the implant stability {Olive...}. The performance of the Periotest unit is depenable and consistent; it produces identical results of the same implant regardless of who operates it. Because of this consistency, Periotest can be used to monitor the increase (or decrease) in the implant stability from one visit to the next.

An evaluation of the Periotest system. Part I: examiner reliability and repeatability of readings
MANZ, M.C., MORRIS, H.F., OCHI, S., Dental Implant Clinical Research Group, University of Michigan, USA
Implant Dent 1, 142-146 (1992).
35 investigators take three readings for each of 16 models designed to simulate an implant. PT generally demonstrated a high deghree of reloability and repeatibility. Metal [m] sample blocks with metal mebrans with varying resiliencies. three blocks of different types of wood (oak [o], pine [p], fir [f]). screw- vent implants (Dentsply/core-vent) were inserted 1. using procedures similar to those for clinical placement of implants, 2. cemented into a prepared site with epoxy cement to simulate osseointegration, both in each block

An evaluation of the Periotest system. Part II: Reliability and repeatability of instruments. Dental Implant Clinical Research Group (Planning Committee)
MANZ, M.C., MORRIS, H.F., OCHI, S.,
Implant Dent 1, 221-226 (1992).
Investigators involved in a clinical study on dental implants being conducted by the Dental Implant Clinical Research Group participated in a two-part in vitro evaluation of the Periotest system. The first part involved each of 35 investigators taking three readings for each of 16 models designed to simulate an implant in place in the oral cavity and to cover most of the effective measuring range of the instrument. The second part, with which this article is concerned, was conducted by three study investigators to determine the level of agreement in readings for six different Periotest instruments. Readings were taken according to the manufacturer's instructions until two coincident readings were obtained. The readings were compared to evaluate inter- and intrainstrument reliability. Instrument repeatability was evaluated by examining the number of attempts required to obtain the two coincident readings. The Periotest system generally demonstrated a high degree of repeatability and reliability, with higher variability associated with specific model samples

Periotestwerte in Abhängigkeit von der okklusalen Belastung
MAYER, R.E., LUKAS, D., SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 47, 323-326 (1992). call for reprints

Tooth and implant mobility measuring device
MIMURA, Y., IWAO, T., SHINKAWA, I., KAWAHARA, H., (Japan)
Dent Mat Forum Mag 5, 5, 73-5, 77 (1992).

Mobility and percussion sound of healthy upper incisors and canines
OIKARINEN, K., KAUPPINEN, P., HERRALA, E., University of Oulu, Finland ,
Endod Dent Traumatol 8, 21-25 (1992).
In order to evaluate the correlation between mobility and percussion sound, 126 upper incisors and canines in 21 student volunteers were measured by means of the Periotest (Siemens), by evaluating the percussion sound subjectively and by analyzing its spectrum. The attenuation time and frequency of the sound were measured for each tooth. A logical mobility and percussion sound existed in accordance with the sizes of the teeth. Spearman correlation coefficients close to 1.00 were noted in individual cases between the Periotest and the three other tests describing the percussion sounds

Rigidity of various fixation methods used as dental splints
OIKARINEN, K., ANDREASEN, J.O., ANDREASEN, F.M., Department of Oral and Maxillofacial Surgery, University of Oulu, Finland ,
Endod Dent Traumatol 8, 113-119 (1992).
Horizontal and vertical rigidity of teeth fixed with seven types of dental splints were evaluated by two tooth mobility measuring devices. Altogether 21 dissected sheep mandibles including soft tissues were used for the experiments in which Fermit, flexible wire-composite, Kevlar, Fiber, Protemp, rigid wire-composite and Triad Gel splints were applied to four incisors. The mean rigidity of the central incisors within the splint was measured by means of Muhlemann periodontometer (horizontal mobility) and Periotest (horizontal and vertical mobilities). Mobility values of teeth before splinting were used as covariants and the values with the splints were illustrated as adjusted mobility. Statistical significance between the rigidity of various splints was analyzed by an unpaired t-test. It was shown that the most rigid splints both in horizontal and vertical directions were Triad Gel, rigid wire-composite and Fermit splints. Kevlar and Fiber splint allowed more horizontal movement than other splints. Protemp and flexible wire-composite splints proved to produce adequate lateral support for the fixed teeth and allowed vertical flexibility which is experimentally known to improve periodontal healing of luxated teeth

High-speed filming of the Periotest measurement
LUKAS, D., SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
KÖNIG, M., REIM, M. Fraunhofer-Institute of Information and Data Processing, Karlsruhe, Germany
J Clin Periodontol 19, 388-391 (1992). call for reprints
Periotest; klinische beweglichkeit; lockerung; messungen an patienten; Percussion; Movement
Periodontal disease may be diagnosed with the Periotest technique, which involves electronically controlled and reproducible percussion of tooth. The movement on percussion was investigated with high-speed film and then compared with the return of teeth after static deflection for several seconds as has been reported previously by Lukas and Scholz. The elastic and viscous properties of the periodontium and the surrounding bony tooth socket are to a large extent non-linear. The 10 - 20 micro-meters deflection of the healthy tooth represents only a fraction of static tooth mobility published by Parfitt or Schulte et al. The visco-elastic properties of a healthy tooth enabling the percussion of the Periotest tapping head to be decelerated in less than 1 ms are largely lost in periodontitis. It is this essential difference which the Periotest method utilizes.

The Periotest method
SCHULTE, W., LUKAS, D., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Int Dent J 42, 433-440 (1992). call for reprints
Periotest; Methods; damping
The Periotest is a new instrument for the diagnosis of periodontal diseases. The 'Periotest value' depends to some extent on tooth mobility, but mainly on the damping characteristics of the periodontium. The Periotest measures the reaction to a reproducible impact applied to the tooth crown. The Periotest value is a biophysical parameter. The Periotest value is generally not elevated with infection of the gingivaeas this is no periodontal destruction

References: ... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001.....

Stabilität enossaler Implantate bei primärer und sekundärer Verblockung
BLICKLE, W., NIEDERDELLMANN, H., SCHWARZER, J.,
Z Zahnärztl Implantol VII, 116-120 (1991).

Der Einsatz des Periotestverfahrens in der Parodontaldiagnostik -Klinische Studien in kritischer Sicht
BUCHMANN, R., HAMM, G., LANGE, D.E.,
Quintess zahnärztl Lit 42, 785-791 (1991).

The Ha-Ti implant
LEDERMANN, P.D., FRISCHHERZ, R., MARKWAKDER, T.H.,
Schweiz Mschr Zahnheilk 101, 611-617 (1991).

Periotestuntersuchungen zur Einheilung Tübinger Implantate
LUKAS, D., SCHULTE, W., D'HOEDT, B., URBANSKI, A., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Z Zahnärztl Implantol VII, 62-67 (1991).
Die Kombination von Rö-Befund und intraoperativem Knochenbefund ist von grober Bedeutung für prognostische Aussagen und zeigt einen deutlichen Zusammenhang mit erhöhten PTW. Bei Verlaufsmessungen deutlicher PTW-Anstieg zwischen 1 Woche und 1 Monat post OP. Nach Prothetik bei unauffälligen Impl keine PTW Abhängigkeit von Liegedauer. Individuelle PTW-Differenz unmittelbar nach und vor einsetzen der prothet. Versorgung: +2,5 (N=15)

[The comparative characteristics of the morphological indices of the maxillodental system in 7- to 12-year-old children with absent closure of the dental arches in the frontal plane]
PANKRATOVA, N.V., PERSIN, L.S., AL KAISI, R.,
Stomatologiia Mosk 70-72 (1991).
The height of permanent teeth crowns was measured and the status of supporting tissue studied with the use of a Periotest in 95 children aged 7-12 with physiologic dental occlusion and in 70 age-matched children without dental occlusion in the frontal section. The data obtained by this apparatus permit a judgement on exercise tolerance of periodontal tissue. The size of the vertical fissure between maxillary and mandibular anterior teeth was measured in the children with abnormal occlusion and analysis of correlations and regressions of this parameter with the height of permanent teeth crown was carried out. The findings evidence that dental supporting tissue strength changes with age, as the maxillodental system develops, and that this characteristic is rather low in the children with non-occluding frontal teeth

Periotestwerte und Beweglichkeit parodontal erkrankter Zähne, eine vergleichende Untersuchung
SCHULTE, W., LUKAS, D., ERNST, E., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Quintess zahnärztl Lit 42, 1255-1263 (1991). call for reprints
Summery: Defined total deflection of maxillary central incisors was ascertained in the orofacial direction. The extent of bone atrophy resulting from marginal periodontitis was determined by radiography. Both values were compared with the Periotest value. A correlation and regression analysis demonstrated a significant relationship, such that the Periotest provided accurate information about bone atrophy.

Zur Kinematik von Implantaten und Suprakonstruktionen
SCHULTE, W., SCHWIEDER, M., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie)
GOI Jahrbuch, Quintessenz Verlag, Berlin (1991).

The Periotest method for determining implant succes
SCOTTER, D.E., VAN, WILSON, C.J., (Chicago, Milwaukee, USA),
J Oral Implantol 17, 410-413 (1991).
The Periotest method is a reliable and reproducible clinical technique that can be utilized in determining implant stability. There is a major difference between measuring the stability of an implant and measuring its mobility. They are opposites. The periotest method measures both the quality and quantity of the biological structures actually supporting the implant, not the support that has been lost. Periotest values closely correlate with tooth mobility, but do not represent the result of a mobility measurement. The normal Periotest value range for integrated implant systems studied shows that the values compare with the Miller Index of mobility, 0 (clinically firm). The absence of mobility is an important criterion for the long-term success of dental implants.

Periotest: an objective clinical diagnosis of bone apposition toward implants
TEERLINK, J., QUIRYNEN, M., DARIUS, P., STEENBERGHE, D.V.,
Int J Oral Maxillofac Impl 6, 55-61 (1991).
Summery: Implant mobility as an indicator of failing close bone apposition is generally known. Whereas a clearly visible mobility can always be correlated with an interposition of soft tissue, the range from a clinically firm implant to just tangible implant mobility represents the actual problem zone. Thirty consecutive patients who had mandibles restored with osseointegrated implants ad modum Branemark were tested with the Periotest device for damping characteristics of the implants and the peri-implant tissues as a whole. The mean Periotest value was -1.74. The characteristics of the mandible, the peri-implant tissue, and the abutment length are the determining factors for the Periotest value. Fixture length, dolder bar, and length of time in function had no signifcant influence on the Periotest value.

References: ... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001...

The Periotest method as a Measure of Osseointegrated oral implant stability
OLIVÉ, J., APARICIO, C.,
Int J Oral Maxillofac Impl 5, 390-400 (1990).
Summery: Oral implant stability is essential for optimal function. Results obtained from the Periotest measurement of the stability of 204 commercially pure titanium implants, consecutively placed in 22 maxillae and 24 mandibles according to the Branemark procedure, are reported. Preliminary results suggest that the Periotest value of an oral implant is an objective and easily applied criterion for stability assessment. Since osseointegration is achieved gradually over time, this test may assist the clinician in deciding whether to extend the healing period before loading fixtures that seem clinically and radiologically integrated but give borderline Periotest values.

Periotest zur quantitativen Bestimmung der okklusalen Belastung. Untersuchungen im parodontal gesunden Gebiss
SCHULTE, W., WAGNER, M., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 45, 394-399 (1990).
Summery: Unsing a serial periotest unit we determined the periotest values for diclusion, slight centric occlusion, maximum intercuspation and axially in 102 subjects with a total of 1769 teeth in periodontally healthy dentitions. All teeth were grouped according to the criteria presence or lack of antagonist contact in maximum intercuspation, excentric abrasion facets and occlusal restorations, and statistically evaluated.
The difference-normal range for physiologic occlusal loads can be assessed by comparative periotest measurements in disclusion and maximum intercuspation. Thus we have, for the first time, a quantitative, objectifiable parameter for the assessment of the "dimension of occlusion", which at the same time provides information on the functional load on the periodontia of antagonists. Premolar teeth with occlusal restorations tended to have significantly greater differences in the periotest values than teeth with natural occlusal surfaces. By comparing these values with the normal range of differences in the periotest value, a high degree of precision can be achieved in adjusting occlusal restorations. Axial measurements revealed a markedly higher shock absorbing capacity of the periodontia than horizontal measurements.

Periotest - a Dynamic Procedure for the Diagnosis of the Human Periodontium
LUKAS, D., SCHULTE, W.
Clin Phys Physiol Meas 11, 65-75 (1990). call for reprints
Periotest; Human; Methods; damping; klassifkation; klinische beweglichkeit; Normalwerte; zchirpar
Periotest is a new method for the diagnosis of periodontal diseases. The periotest value depends also on tooth mobility, but mainly on the damping characteristics of the periodontium. Periotest measures the reaction upon a reproducible impact against the tooth crown. The periotest value is in itself a biophysical parameter, such as the blood pressure.The results show, that the periotest procedure is an objective and quick diagnosis procedure for the human periodontium, suitable for the dentist's routine. at monitoring of therapy or at follow-up controls the periotest is able to avoid some of the radiographies and therefore to diminish the dosage of x-radiation to the patient. The periotest values and the contact time t0 correlate closely with the tooth mobility, but they don't represent the result of a measurement of tooth mobility. The periotest values are biophysical parameters by themselves.

References:... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001...

Das Periotest-Verfahren zur Diagnostik marginaler Entzündungen
BRAUNER, A.,
Dtsch Zahnärztl Z 44, 609-611 (1989).

A Comparative Study of Results with various Endosseous Implant Systems
D'HOEDT, B., SCHULTE, W.,
Int J Oral Maxillofac Impl 4, 95-105 (1989).

Vergleichende Untersuchungen über Parodontal-Indizes unter besonderer Berücksichtigung des Periotestverfahrens
GRUBER, I., HAMM, G., SONNABEND, E.,
Dtsch Zahnärztl Z 40, 364-365 (1989).
Summery: 40 patients from both gender were examined to determine if there is a correlation between periodontal indices and periotest values. As a result we were able to show that the pocket depth correlates with the periotest values for all tooth groups. On the other hand SulcusBleedingIndex correlates with the periotest values only for the premolars in upper and the front in lower jaw.

Überprüfung der parodontalen Reaktion an Stützzähnen mit dem Periotest-Gerät
KERN, M., REITHER, W.,
Dtsch Zahnärztl Z 44, 579-582 (1989).

Über den Einsatz des Periotestgerätes zur Früherfassung experimentell erzeugter parodontaler Veränderungen
KOCHER, T., PLAGMANN, H.C., HEIN, R., BRENNICKE, C.,
Dtsch Zahnärztl Z 44, 493-495 (1989).

Vergleichende biometrische Untersuchungen zur mechano-elektrischen Bestimmung der Zahnbewe glichkeit
NIEDERMEIER, W., DIEPGEN, T.L., PAIVA, V.,
Dtsch Zahnärztl Z 44, 774-776 (1989).

Die Abhängigkeit des Periotestwertes von Wurzelform und Wurzelquerschnitt
OHLROGGE, H.H.,
Dtsch Zahnärztl Z 44, 380-382 (1989).

Quantitative und qualitative Bestimmung des Settling-Effektes durch die Positioner-Therapie
SANDER, F.G., FRÖHLS, M.,
Inf Orthodont Kieferorthopäd 21, 311-318 (1989).

Zahnbeweglichkeit nach kieferorthopädischer Multibandbehandlung
SANDER, F.G., FRÖHLS, M.,
Inf Orthodont Kieferorthopäd 21, 89-102 (1989).

Das Periotestverfahren
[the Periotest method] (an English translation ist available from the author)
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie)
Ketterl, W. (Hrsg.): Deutscher Zahnärztekalender, 48, C. Hanser, München (1989).

Zur Kinematik von enossalen Implantaten und ihren Suprakonstruktionen - Periotestaspekte
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie)
Z Zahnärztl Implantol V, 174-179 (1989).

Periotest: An objective clinical diagnosis of osseointegration.
TEERLINK, J., QUIRYNEN, M., STEENBERGHE, D.V.,
J dent Research 68, 644 (1989).
Summery: The mobility of implants as a criterion of failing osseointegration is generally known. Whereas a clearly visible mobility can always be correlated to an interposition of soft tissue, the range from a clinical firm implant to just tangible implant mobility represents the actual problem zone. Because static tests fail to furnish information on the biophysical behaviour of the periimplantium, subjective dynamic measurements like implant percussion are used. We are presenting the preliminary results of the damping characteristics of osseointegrated implants ad modum Branemark for which we used the Periotest, recently described by W.Schulte. Its microcomputerized measuring, steering and speech synthesis systems allows it to quantify in a numeric scale the elasticity of the tissue-implant binomium when tapped with a miniature accelerometer on a rod held in low friction bearings. The trial was carried out on 30 patients with an overdenture on two implants in the lower jaw. This type of removable prosthesis makes serial measurements at any time possible. The periotest values are uniformly arranged in the negative area (-4 to 0). The breaking time fluctuates between 0.350 us and 0.450 ms. The impact force ranged between 18 N and 12 N.
The periliminary results of this work suggest that the periotest device offers new possibilities in the diagnosis and follow-up of initial stability, osseointegration after abutment connection and during function.

References: ... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001...

Nachuntersuchung des Funktionszustandes einwurzeliger Zähne im Oberkiefer nach Lappenoperation unter Verwendung des Periotestverfahrens
BUCHMANN, R., LANGE, D.E.,
Dtsch Zahnärztl Z 39, 701-704 (1988).

Der Periotestwert bei enossalen Implantaten
D'HOEDT, B., SCHRAMM-SCHERER, B.,
Z Zahnärztl Implantol IV, 89-95 (1988).

The Assessment of Periodontal Disease Activity
EGLOFF, E.T., HOCHMANN, M.,
Compend Contin Educ Dent 12, S424-S427 (1988).

Comparative Response of Mobile Teeth Following Monolithic Fiber Therapy or Scaling
GOODSON, J.M., CUGINI, M.A.,
Compend Contin Educ Dent 12, S418-S423 (1988).

Frühdiagnose von Zahnbetterkrankungen
LUKAS, D., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Physik in unserer Zeit 19, 62 (1988).

Okklusal-parodontale Belastung ist jetzt quantitativ messbar: eine neue Anwendung des Periotest-Verfahrens
[The occlusal-periodontal load can now be measured quantitatively: a new field of application of the periotest method]
(an English translation is available from the author))
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Zahnärztl Mitt 78, 474-484 (1988).

The Effect of Tooth Mobility on Probing Depths
VANARSDALL, R., LEMAY, J., LINDHE, J.,
Compend Contin Educ Dent 12, S433-S437 (1988).

Some Candid Observations and Reflections on the Results of an In Vitro Test of the Siemens Periotest(R) Device
WEBBER, R.L.,
Compend Contin Educ Dent 12, S438-S441 (1988).

Replantationsergebnisse nach traumatischer Zahneluxation
CORNELIUS, C.P., EHRENFELD, M., UMBACH, T.,
Dtsch Zahnärztl Z 42, 211-215 (1987).

Le periotest: Un nouveau moyen electronique d'elevation de la mobilité dentaire
CORNU, J.L.,
Int Dent J 69, 1335-1340 (1987).

Periotest - A new Measuring Instrument of Dynamic Periodontal Function and the Guide to its Application
KOHNO, S., SATO, T., TABATA, T.,
Jap Quintessence 18, 41 (1987).

Untersuchungen zum Dämpfungsverhalten von Metall- und Keramikimplantaten
SCHRAMM-SCHERER, B.,
Z Zahnärztl Implantol III, 22-26 (1987).

Messung des Dämpfungsverhaltens enossaler Implantate mit dem Periotestverfahren
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Z Zahnärztl Implantol II, S11-S12 (1986).

Der Periotest - Parodontalstatus
[the Periotest periodontal status] (an English translation is available from the author))
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Zahnärztl Mitt 76, 1409-1414 (1986).

Das Periotestverfahren - Entwicklung und klinische Prüfung
[the Periotest - research and clinical trials] (an English translation is available from the author))
D'HOEDT, B., LUKAS, D., MÜHLBRADT, L., SCHOLZ, F., SCHULTE, W., QUANTE, F., TOPKAYA, A., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 40, 113-125 (1985).

Was leistet das Periotestverfahren heute?
SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 40, 705-706 (1985).

Periotest - neues Messverfahren der Funktion des Parodontiums
SCHULTE, W., D'HOEDT, B., LUKAS, D., SCHOLZ, F., BRETSCHI, J., FREY, D., GUDAT, H., KÖNIG, M., MARKL, M., QUANTE, F., TOPKAYA, A.
Zahnärztl Mitt 73, 1229-1240 (1983). call for reprints

Periotest - ein neuer Messverfahren für die Diagnose Parodontaler Erkrankungen
WOHLGEMUTH, J., HOHMANN, E.,
Zweifel, H.-J. (Hrsg.): Feintechnik in der Medizin 83, Interstaatliche Ingenieurschule, Buchs (Schweiz) (1983).

Messverfahren zur quantitativen Beurteilung des Schweregrades von Parodontopathien (Periotest)
KÖNIG, M., LUKAS, D., QUANTE, F., SCHULTE, W., TOPKAYA, A.,
Dtsch Zahnärztl Z 36, 451-454 (1981). call for reprints

Bewegungsverhalten bei Stossanregung des Tübinger Implantates im Vergleich zum natürlichen Zahn
SCHOLZ, F., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 36, 567-570 (1981). call for reprints

Die Dämpfungseigenschaften des Parodontiums im Vergleich zum Tübinger Sofortimplantat
SCHOLZ, F., HOLZWARTH, W., LUKAS, D., SCHULTE, W., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 35, 709-712 (1980). call for reprints

Die Rückstellbewegung oberer Inzisivi
[The resetting movement of upper incisors]
SCHOLZ, F., LUKAS, D., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 34, 367-370 (1979). call for reprints
Gesunde und durch progressive marginale Parodontitis geschädigte freistehende Oberkieferfrontzähne werden labial mit 1 bis 8 N (102 bis 815 Pond) so lange belastet, bis alle Kriechbewegungen abgeklungen sind und eine gleichbleibende Auslenkung erreicht ist. Dann werden die Zähne freigegeben und die Rückstellbewegungen trägheitslos und rückwirkungsfrei gemessen. In den ersten Millisekunden unterscheiden sich die Dämpfungseigenschaften gesunder und erkrankter Zähne qualitativ. Somit sollte die Konstruktion eines praxisgerechten Diagnosegerätes für parodontale Erkrankungen möglich sein.
Summery: Labial stress of 1 to 8 Newton (102-815 Pond) was exerted on free-standing upper incisors, both healthy teeth and teeth damaged by progressive marginal periodontitis, until all creeping movement subsided and constant guidance was achieved. The teeth were then freed, and the resetting movements were measured without inertia and free of effect. The dampening characteristics of healthy and deseased teeth differed qualitatively in the first few milliseconds. Construction of a diagnostic device for determination of periodontal disease suitable for the general practise therefore ought to be possible.

Analyse von Perkussionssignalen an Zähnen
GUDAT, H., MARKL, M., LUKAS, D., SCHULTE, W.,
Dtsch Zahnärztl Z 32, 169-172 (1977). call for reprints

Zahnbeweglichkeitsmessungen mit berührungslosen Wegfühlern
LUKAS, D., MÜHLBRADT, L., SCHOLZ, F., (Poliklinik für Zahnärztliche Chirurgie und Parodontologie),
Dtsch Zahnärztl Z 32, 173-175 (1977). call for reprints
Die freie Rückstellbewegung freistehender Oberkieferfrontzähne wird gemessen. Zuvor werden die Zähne so lange mit 1,5-3 N belastet, bis alle Kriechbewegungen abgeklungen sind und eine stationäre Auslenkung erreicht ist. Erst dann wird erschütterungsfrei entlastet. Im Schrifttum fehlen Messungen der Rückstellung, welche auch die ersten 50 msec auflösen. Daher konzentriert sich diese Arbeit auf den ersten Teil dieser Rückstellbewegung.

References: ... 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001...

YOUR COMMENTS, CRITICAL REMARKS OR SUGGESTIONS ARE VERY HELPFUL!

Dieter Lukas,

update: 2002-VII-4.