D E P A R T M E N T S:

GUEST EDITORIAL:

The International Dental Research Agenda—The FDI World Dental Federation

A. Jokstad, J.T. Barnard, and E. Reich
The authors describe the FDI’s international dental research agenda.

J Dent Res 2003 82: 156-157. [Full Text] [PDF]  

DISCOVERY!:

The Junctional Epithelium: From Strength to Defense

Hubert E. Schroeder and Max A. Listgarten
The authors trace the history of the recognition of the junctional epithelium as a major participant in host defenses against bacterial infection.

J Dent Res 2003 82: 158-161. [Full Text] [PDF]  

CONCISE REVIEWS:

Oral Clefts and Syndromic Forms of Tooth Agenesis as Models for Genetics of Isolated Tooth Agenesis

A.R. Vieira
Oral clefts and syndromic forms of tooth agenesis may be the best models for isolated tooth agenesis.

J Dent Res 2003 82: 162-165. [Abstract] [Full Text] [PDF]  

CLARIFICATION:

CLARIFICATION

J Dent Res 2003 82: 247. [Full Text] [PDF]  

ERRATUM:

ERRATUM

J Dent Res 2003 82: 247. [Full Text] [PDF]  

R E S E A R C H  R E P O R T S:

Biological:

Gene Expression of Growth Differentiation Factors in the Developing Periodontium of Rat Molars

K. Sena, Y. Morotome, O. Baba, T. Terashima, Y. Takano, and I. Ishikawa
This is the first study to show expression of growth and differentiation factors 5, 6, and 7 mRNAs in the growing dental tissues of rats in vivo.

J Dent Res 2003 82: 166-171. [Abstract] [Full Text] [Figures Only] [PDF] [Appendix]  

Expression of Bone Morphogenetic Proteins and Msx Genes during Root Formation

T. Yamashiro, M. Tummers, and I. Thesleff
Root shape may be regulated by a mechanism similar to that regulating crown shape in cap-stage tooth germs.

J Dent Res 2003 82: 172-176. [Abstract] [Full Text] [Figures Only] [PDF]  

Expression of Vascular Endothelial Growth Factor and the Effects on Bone Remodeling during Experimental Tooth Movement

S. Kohno, M. Kaku, K. Tsutsui, M. Motokawa, J. Ohtani, K. Tenjo, Y. Tohma, C. Tokimasa, T. Fujita, T. Kawata, and K. Tanne
Vascular endothelial growth factor (VEGF), highly expressed on osteoblasts, stimulates osteoclast differentiation as a paracrine factor, and the amount of tooth movement is accelerated by endogenous VEGF and injected recombinant human VEGF.

J Dent Res 2003 82: 177-182. [Abstract] [Full Text] [Figures Only] [PDF]  

NF-B Activation and iNOS Expression in the Synovial Membrane of Rat Temporomandibular Joints after Induced Synovitis

T. Yamaza, K.F. Masuda, Y. Tsukiyama, K. Nishijima, R. Murakami, M.A. Kido, K. Koyano, and T. Tanaka
Excess mechanical stress increases NF-{kappa}B activation in the TMJ, and active NF-{kappa}B is involved in the progression of TMJ inflammation.

J Dent Res 2003 82: 183-188. [Abstract] [Full Text] [Figures Only] [PDF]  

Clinical:

The Interleukin-1 Polymorphism, Smoking, and the Risk of Periodontal Disease in the Population-based SHIP Study

P. Meisel, A. Siegemund, R. Grimm, F.H. Herrmann, U. John, C. Schwahn, and T. Kocher
This study supports the hypothesis of gene-environmental interaction in periodontitis.

J Dent Res 2003 82: 189-193. [Abstract] [Full Text] [Figures Only] [PDF]  

Optimism and Life Satisfaction as Determinants for Dental and General Health Behavior—Oral Health Habits Linked to Cardiovascular Risk Factors

P.V. Ylöstalo, E. Ek, J. Laitinen, and M.L. Knuuttila
Dental and general health behaviors were associated with both cardiovascular risk factors and self-reported dental diseases, which supports the assumption that they share a common behavioral background.

J Dent Res 2003 82: 194-199. [Abstract] [Full Text] [PDF]  

Unification of the "Burst" and "Linear" Theories of Periodontal Disease Progression: A Multilevel Manifestation of the Same Phenomenon

M.S. Gilthorpe, A.T. Zamzuri, G.S. Griffiths, I.H. Maddick, K.A. Eaton, and N.W. Johnson
When considered as a multilevel system, the "linear" and "burst" theories of periodontal disease progression are a manifestation of the same phenomenon: Some sites improve while others progress, in a cyclical manner.

J Dent Res 2003 82: 200-205. [Abstract] [Full Text] [Figures Only] [PDF]  

Retention in Plaque and Remineralization of Enamel Lesions by Various Forms of Calcium in a Mouthrinse or Sugar-free Chewing Gum

E.C. Reynolds, F. Cai, P. Shen, and G.D. Walker
Casein phosphopeptide-amorphous calcium phosphate nanocomplexes are superior to other forms of calcium in remineralizing enamel subsurface lesions.

J Dent Res 2003 82: 206-211. [Abstract] [Full Text] [Figures Only] [PDF]  

Human Masticatory Muscle Forces during Static Biting

J.C. Nickel, L.R. Iwasaki, R.D. Walker, K.R. McLachlan, and W.D. McCall, Jr.
The authors present the first data testing model predictions of masticatory muscle output for changes in biting moments in individual subjects.

J Dent Res 2003 82: 212-217. [Abstract] [Full Text] [Figures Only] [PDF] [Appendix]  

Association between Serum Albumin and Root Caries in Community-dwelling Older Adults

A. Yoshihara, N. Hanada, and H. Miyazaki
A relationship between root caries and serum albumin concentrations in elderly subjects is highly possible.

J Dent Res 2003 82: 218-222. [Abstract] [Full Text] [Figures Only] [PDF]  

Increased Preventive Practices Lead to Greater Tooth Retention

N.R. Kressin, U. Boehmer, M.E. Nunn, and A. Spiro, III
Adherence to ADA recommendations for oral hygiene and preventive care leads to better oral health, and consistently practicing preventive behaviors over the long term confers greater benefits than doing so over the short term.

J Dent Res 2003 82: 223-227. [Abstract] [Full Text] [PDF]  

Biomaterials & Bioengineering:

Dynamic Shear Properties of the Temporomandibular Joint Disc

E. Tanaka, K. Hanaoka, T. van Eijden, M. Tanaka, M. Watanabe, M. Nishi, N. Kawai, H. Murata, T. Hamada, and K. Tanne
This is the first study in which the dynamic shear properties of the TMJ disc have been examined.

J Dent Res 2003 82: 228-231. [Abstract] [Full Text] [Figures Only] [PDF]  

Persistent Acute Inflammation at the Implant-Abutment Interface

N. Broggini, L.M. McManus, J.S. Hermann, R.U. Medina, T.W. Oates, R.K. Schenk, D. Buser, J.T. Mellonig, and D.L. Cochran
The absence of an implant-abutment interface (microgap) at the bone crest was associated with reduced peri-implant inflammatory cell accumulation and minimal bone loss.

J Dent Res 2003 82: 232-237. [Abstract] [Full Text] [Figures Only] [PDF]  

Lifetime Prediction of All-ceramic Bridges by Computational Methods

H Fischer, M Weber, and R Marx
Computational techniques can assist clinicians' ability to judge the mechanical reliability of a ceramic material and a specific ceramic bridge design before clinical use.

J Dent Res 2003 82: 238-242. [Abstract] [Full Text] [Figures Only] [PDF]  

Neurotoxicity of Dental Amalgam is Mediated by Zinc

D Lobner and M Asrari
This is the first study to show that amalgam is toxic to nerve cells in culture, and that chelating zinc could block the cytotoxicity of amalgam.

J Dent Res 2003 82: 243-246. [Abstract] [Full Text] [Figures Only] [PDF]  

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