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Hysteresis in Jaw Positioning Following Lateral Stretches

Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, Texas 78284

R.R. Lemke

Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, Texas 78284

F.B. Dal Santo

Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center, 7703 Floyd Curl Drive, San Antonio, Texas 78284

The purpose of this study was to examine hysteresis of the masticatory system following brief voluntary lateral positioning of the mandible. Hysteresis was studied in ten healthy subjects, as a function of both time and distance that the mandible was held laterally off the midline. So that the effects of distance of lateral stretch on hysteresis could be studied, subjects positioned their jaws to the left or right of the midline distances of 2, 4, 6, 8, and 10 mm for ten s. So that the effects of time could be studied, the distance of lateral stretch was held a constant 8 mm for durations of two, four, six, 12, 16, and 20 s. Following each voluntary lateral stretch, subjects relaxed the muscles using EMG biofeedback and allowed the mandible to reposition itself passively. Hysteresis was defined as the difference in the mandibular resting position between pre- and post-stretch recordings. Mean hysteresis effects ranged from 0.7 mm to 1.8 mm. Hysteresis effects were found to increase with both distance and time; after eight s, however, no additional effect of time was noted.

REFERENCES

• Alexander, R.S. and Johnson, P.D., Jr. (1965): Muscle Stretch and Theories of Contraction, Am J Physiol 208:412-416.[Abstract/Free Full Text]
• Aubert, X.; Roquet, M.L.; and Van Der Elst, J. (1951): The Tension-Length Diagram of the Frog's Sartorius Muscle, Arch Int Physiol 59:239-241.[Medline] [Order article via Infotrieve]
• Brown, M.C.; Goodwin, G.M.; and Matthews, P.B.C. (1969): After-effects of Fusimotor Stimulation on the Response of Muscle Spindle Primary Afferent Endings, J Physiol (Lond) 205:677-694.[Abstract/Free Full Text]
• Buchtal, F. and Kaiser, E. (1951): The Rheology of the Cross Striated Muscle Fiber, Dan Biol Medd 21:1-318.
• Fung, Y.C. (1981): The Stress Strain Relationship. In: Biomechanics: Mechanical Properties of Living Tissues, New York, NY: Springer Verlag, pp. 210-212.
• Fung, Y.C. (1972): Stress Strain History Relations of Soft Tissues in Simple Elongation. In: Biomechanics: Its Foundation and Objectives, Y.C. Fung, N. Perrone, and M. Anliker, Eds., Englewood Cliffs, NJ: Prentice-Hall, Inc., pp. 181-208.
• Geffen, L.B. (1964): Optimum Length for Contraction of Rat Circulated Limb Muscles, Arch Int Physiol Biochim 72:825-834.[Medline] [Order article via Infotrieve]
• Gielen, C.C.; Houk, J.C.; Marcus, S.L.; and Miller, L.E. (1984): Viscoelastic Properties of the Wrist Motor Servo in Man, Ann Biomed Eng 12:599-620.[Medline] [Order article via Infotrieve]
• Hall, D.A., Ed. (1976): The Aging of Connective Tissue, San Francisco: Academic Press.
• Hannam, A.G.; DeCou, R.E.; Scott, J.D.; and Wood, W.W. (1980): The Kinesiographic Measurement of Jaw Displacement, J Prosthet Dent 44:88-93.[Medline] [Order article via Infotrieve]
• Ho, T.P.; Weinstein, S.; and Bowley, W.W. (1984): Extensibility Studies of Human Cheek- Viscoelastic Properties, J Dent Res 63:1258-1260.[Abstract/Free Full Text]
• Jankelson, B.; Swain, C.W.; Cane, P.F.; and Radke, J.C. (1975): Kinesiometric Instrumentation: A New Technology, J Am Dent Assoc 90:834-840.[Medline] [Order article via Infotrieve]
• Lemke, R.R. and Rugh, J.D. (1982): Hysteresis Effects Following Vertical Opening of the Mandible, J Dent Res 61 (Sp Iss A):No. 225.
• Long, C.; Thomas, D.; and Crochetiere, W.J. (1964): Objective Measurement of Muscle Tone in the Hand, Clin Pharmacol Ther 5:909-917.
• Lynn, A.M. and Yemm, R. (1971): External Forces Required to Move the Mandible of Relaxed Human Subjects, Arch Oral Biol 16:1443-1447.[CrossRef][Medline] [Order article via Infotrieve]
• McCall, W.D., Jr.; Vrancuta, O.; Gross, A.; Bishop, B.; and Gale, E.N. (1985): The Effect of Direction on the Plot of EMG vs. Jaw Opening, J Dent Res 64:340, Abst. No. 1489.
• McCarter, R.J.M. (1978): Effects of Age on Contraction of Mammalian Skeletal Muscle. In: Aging, Vol. 6: Aging in Muscle, G. Kaldor and W.J. DiBattista, Eds., New York, NY: Raven Press, pp. 1-21.
• McCarter, R.J.M.; Nabarro, F.R.; and Wyndham, C.H. (1971): Reversibility of the Passive Length-Tension Relation in Mammalian Skeletal Muscle, Arch Int Physiol Biochim 79:469-479.[Medline] [Order article via Infotrieve]
• Plesh, O.; McCall, W.D.; and Gross, A. (1988): The Effect of Prior Jaw Motion on the Plot of Electromyographic Amplitude Versus Jaw Position, J Prosthet Dent 60:369-373.[Medline] [Order article via Infotrieve]
• Proske, U. and Morgan, D.L. (1985): After-effects of Stretch on the Responses of Cat Soleus Muscle Spindles to Static Fusimotor Stimulation, Exp Brain Res 59:166-175.[Medline] [Order article via Infotrieve]
• Remington, J.W. (1957): Extensibility Behavior and Hysteresis Phenomena in Smooth Muscle Tissues. In: Tissue Elasticity, J.W. Remington, Ed., Baltimore, MD: Waverly Press, Inc., pp. 138-153.
• Robert, L. and Robert, B., Eds. (1973): Aging of Connective Tissues. General Considerations. In: Aging of Connective Tissues-Skin, Basel, New York: S. Karger, pp. 1-45.
• Roberts, T.D.M. (1963): Rhythmic Excitation of a Stretch Reflex, Revealing (A) Hysteresis and (B) a Difference Between the Responses To Pulling and Stretching, Q J Exp Physiol 48:328-345.[Abstract/Free Full Text]
• Rugh, J.D. and Sims, D.B. (1981): Electrode Placement Effects on Recording Electromyographic Resting Position, J Dent Res 60 (Sp Iss A):No. 147.
• Smith, J.L.; Hutton, R.S.; and Eldred, E. (1974): Postcontraction Changes in Sensitivity of Muscle Afferents to Static and Dynamic Stretch, Brain Res 78:193-202.[CrossRef][Medline] [Order article via Infotrieve]
• Williams, W.N.; Lapointe, L.L.; and Faircloth, B.H. (1987): Lateral and Anterior-Posterior Mandibular Position Discrimination by Normal Subjects, J Oral Rehabil 14:301-308.[Medline] [Order article via Infotrieve]
• Yemm, R. (1975): The Mandibular Rest Position: The Roles of Tissue Elasticity and Muscle Activity, J Dent Assoc S Africa 30:203-208.

Journal of Dental Research, Vol. 69, No. 2, 470-472 (1990)
DOI: 10.1177/00220345900690021001


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This Article Abstract Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Rugh, J.D. Articles by Dal Santo, F.B. Search for Related Content PubMed PubMed Citation Articles by Rugh, J.D. Articles by Dal Santo, F.B. Social Bookmarking                         What's this?