A Clinical Study of the Dental Compression Syndrome Joichiro Suzuki Department of Periodontics and Endodontics, Tsurumi University, School of Dental M

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1 A Clinical Study of the Dental Compression Syndrome Joichiro Suzuki Department of Periodontics and Endodontics, Tsurumi University, School of Dental Medicine Tsurumi, Tsurumi-ku Yokohama 230, Japan Director: Prof. Jiro Nakamura) ( In 1991, Dr. Gene McCoy reported the concept of dental compression syndrome (D. C. S. ). The aim of this study was to investigate the clinical manifestations ofd. C. S.. We especially concentrated on the common signs of D. C. S. observed in teeth, and investigated the relationship between D. C. S. and periodontal disease. We selected 10 subjects aged years (5 males and 5 females) who had wedge-shaped defects, unusual alveolar bone morphology in the oral cavity, such as exostosis and/or abfractions (D. C. S. group) and another 10 subjects aged 26 `47 years (4males and 6 females) who did not have symptoms of D. C. S. as the control group. The clinical parameters assessed in this study were tooth mobility (M), buccal and lingual probing attachment level (B-PAL, L-PAL), area of occlusal contact (OC) and occlusalforce (OF). Measurements of M and B and L-PAL were made by PERIOTEST (R) and with Color Probe (R). Measurements of OC and OF were made by DENTAL PRESCALE (R) and OCCLUZER (R). The values obtained forthese clinical parameters were as follows: in the control group, M, 4.6 }5.3; B-PAL, 2.2 }0.8mm; L-PAL, 2.1 }0. 9mm; OC, 20.9 } 5. 9mm2 and OF, }49. 9N, and in the D. C. S. group, M, 7.0 }6.3; B-PAL, 4.0 }1.4mm; L -PAL, 3.4 }1.9 mm, OC, 53.8 }44.2 mm2 and OF, }293.4 N. The differences between the M values in the two groups was not significant. The difference between the B-PAL values was significant (p<0.01, by Student's t-test). There were significant differences between the two groups in L -PAL values for the anterior and the molar teeth p<0.05, by Student's t-test and Welch'st-test). There were also significant differences between the groups in OC and OF values (p<0.05, by Welch's t -test). In the D. C. S. group, there were correlations p<0.01) between M and L-PAL, OC and ( OF, OC and L-PAL, and B-PAL and L-PAL. In the D. C. S. group, all premolars had wedge-shaped defects. It was concluded that B-PAL and L-PAL on anterior and molar teeth, and OC and OF were larger in the D. C. S. group than in the control group. ( Key words: Dental compression syndrome, Clinical manifestations, Periodontal disease, Wedge-shaped defects

Vol 1. Medico-dental, Chicago, 42-59, 1917. 10) Miller, W. D.

14 Vol 1. Medico-dental, Chicago, 42-59, ) Miller, W. D.: Experiments and observations on the wasting of tooth tissue variously designated as erosion, abrasion, chemical abrasion, denudation, etc. (I) Dent. Cosmos, 49: 1-23, ) Miller, W. D.: Experiments and observations on the wasting of tooth tissue variously designated as erosion, abrasion, chemical abrasion, denudation, etc (II). Dent. Cosmos, 49: , ) Miller, W. D.: Experiments and observations on the wasting of tooth tissue variously designated as erosion, abrasion; chemical abrasion, denudation, etc (III). Dent. Cosmos, 49: , ) Ivy, R.: A case of erosion. Dent. Cosmos, 44: , ) Floyd, M. R.: External odontoclastic resorptive lesions in cats-another opinion. J. Vet. Dent., 8: 22-23, ) McCoy, G.: Dental compression syndrome a new 18) Hervey, C. E. and Emily, P. P.: Small animal dentistry. Mosby, St. Louis, , look at an old disease. Proceedings of Congress XV of the International Academy of Gnathology, 19) Miller, W. D.: Further investigations of the subiect ofwastinv. Dent. Cosmos, 49: , Colorado, California, 9: 18-22, ) Grosskopf, G.: Untersuchungen zur entstehung der sogenanntenkeilformigen detekte am organum dentale (thesis). Frankfurt/Main, ) Spranger, H. undttaim, G.: Zur Analyse hochfrequenter schwingungen in der hartsubstany mens- chlicherzahne Stoma Heidelberg. 22: , ) Lukas, D. und Spranger, H.: Untersuchungen 8) Hunter, J.: The natural history and diseases of ber die horiyontalbelastung des u zahnes bei the human teeth. Haswell Barrington and definierten unterkieferlateralbewegungen. Dtsch Haswell, Philadelphia, 70, Zahnarztl. Z., 28: 280, ) Black, G. V.: A work on operative dentistry. 26) Lukas, D. und Spranger, H.: Experimentelle

untersuchungen uber die auswirkungen unterschiedlich gemessener gelenkbahnund bennetwinkel auf die horizontalbelastung Zahnarztl. Z., 28: 755-758, 1973. des zahnes. Dtsch 27) Spranger, H., Weber, G.

15 untersuchungen uber die auswirkungen unterschiedlich gemessener gelenkbahnund bennetwinkel auf die horizontalbelastung Zahnarztl. Z., 28: , des zahnes. Dtsch 27) Spranger, H., Weber, G. und Kung, Y. S.: Untersuchungen tiber die atiologie, pathogenese und therapiekonsequenzen der zervikalen zahnhartsubstanzdefekte. Der Hessische Zahnarzt. Separatum Otto-Loos-Preis, 12: , ) Lee, W. C. and Eakle, W. S.: Possible role of tensile stress in the etiology of cervical erosive lesions of teeth. J. Prosthet. Dent., 52: , ) Grippo, J. O.: Abfractions A new classification of hard tissue lesions of teeth. J. Esthet. Dent., 1: 14-19, ) Grippo, J. O. and Masi, J. V.: Role of biodental engineering factors (BEF) in the etiology of root caries. J. Esthet. Dent., 2: 71-76, ) Braem, M., Lambrechts, P. and Vanherle, G.: Sterss-induced cervical lesions. J. Prosthet. Dent., 67: , ) Grippo, J. O.: Noncarious Cervical Lesions: The decision to ignore or restore. J. Esthet. Dent., 4: 55-64, ) Xhonga, F. A.: Bruxism and its effect on the teeth. J Oral Rehabil., 4: 65-76, ) Thresher, R. W. and Saito, G. E.: The stress analysis of human teeth. J Biomech., 6: , ) Yettram, A. L., Wright, K. W. J. and Pickard, H. M.: Finite element stress analysis of the crowns 46) Bevenius, J., L'Estrange, P., Karlsson, S. and Carlsson, G. E.: Idiopathic cervical lesions: in vivo investigation by oral microendoscopy and scanning electron microscopy. A pilot study. J Oral Rehabil., 20: 1-9, ) Mario, A. A. and Gross, B. D.: Piezoelectricity in cementum, dentine and bone. J. Oral Biol., 34 (7) : , ) Spranger, H.: Investigation into the genesis of angular lesions at the cervical region of teeth. Quintessence Int., 26: , of normal and restored teeth. J Dent. Res., 55: , ) Kantor, M., Polson, A. M. and Zander, H. A.: Alveolar bone regeneration after removal of inframmatory and traumatic factors. J. Peri- odontol., 47: 687, 1976.

A Clinical Study on Dental CAD/CAM CEREC(R) System Fitness of CEREC(R) Porcelain Laminate Veneers-- Takashi Nakamura, Yutaka Tanaka*, Hiroyuki Ogawa,

A Clinical Study on Dental CAD/CAM CEREC(R) System Fitness of CEREC(R) Porcelain Laminate Veneers-- Takashi Nakamura, Yutaka Tanaka*, Hiroyuki Ogawa, Takeshi Akao, Aogu Imanishi, Toshizumi Hino and Takao