3D X-RAY MICROSCOPY OF ENAMEL - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper '3D X-ray microscopic study of the extent of variations in enamel density in first permanent molars with idiopathic enamel hypomineralisation' by J. Fearne et al., which had been cited 19 times at the time of going to press. Fearne J, Anderson P, Davis G R. 3D X-ray microscopic study of the extent of variations in enamel density in first permanent molars with idiopathic enamel hypomineralisation. Br Dent J 2004; 196: 634-638. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

PERCEPTION OF ROUGHNESS OF RESTORATIONS - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'The in vivo perception of roughness of restorations' by C. S. Jones et al., which had been cited 19 times at the time of going to press. Jones C S, Billington R W, Pearson G J. The in vivo perception of roughness of restorations. Br Dent J 2004; 196: 42-45. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

STRESS And HEALTH in the GDP - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper '"It's difficult being a dentist": stress and health in the general dental practitioner' by H. L. Myers H L, Myers L B. 'It's difficult being a dentist': stress and health in the general dental practitioner. Br Dent J 2004; 197: 89-93. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

STAINLESS STEEL CROWNS FOR PRIMARY MOLARS - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'General dental practitioners' views on the use of stainless steel crowns to restore primary molars' by A. G. Threlfall et al., which had been cited 17 times at the time of going to press. Threlfall A G, Pilkington L, Milsom K M, Blinkhorn A S, Tickle M. General dental practitioners' views on the use of stainless steel crowns to restore primary molars. Br Dent J 2005; 199: 453-455. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

LICHENOID LESIONS AND DENTAL RESTORATIVES - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'Oral lichenoid lesions related to dental restorative materials' by Y. Issa et al., which had been cited 18 times at the time of going to press. Issa Y, Duxbury A J, Macfarlane T V, Brunton P A. Oral lichenoid lesions related to dental restorative materials. Br Dent J 2005; 198: 361–366. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

DIGITAL COLOUR MATCHING - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'The use of digital imaging for colour matching and communication in restorative dentistry' by F. D. Jarad et al., which had been cited 22 times at the time of going to press. Jarad F D, Russell M D, Moss B W. The use of digital imaging for colour matching and communication in restorative dentistry. Br Dent J 2005; 199: 43–49. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

EFFICACY OF ORAL ANALGESICS - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'Relative efficacy of oral analgesics after third molar extraction' by J. Barden et al., which had been cited 21 times at the time of going to press. Barden J, Edwards J E, McQuay H J, Wiffen P J, Moore R A. Relative efficacy of oral analgesics after third molar extraction. Br Dent J 2004; 197: 407-411. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'The surface effects of erosion and abrasion on dentine with and without a protective layer' by A. Azzopardi et al., which had been cited 20 times at the time of going to press. Azzopardi A, Bartlett D W, Watson T F, Sherriff M. The surface effects of erosion and abrasion on dentine with and without a protective layer. Br Dent J 2004; 196: 351-354. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

TEMPERATURE RISES DURING TOOTH BLEACHING - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study' by M. Sulieman et al., which had been cited 24 times at the time of going to press. Sulieman M, Addy M, Rees J S. Surface and intra-pulpal temperature rises during tooth bleaching: an in vitro study. Br Dent J 2004; 196: 279-282. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com

ILIAC CREST GRAFT HARVESTING - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'An investigation of post-operative morbidity following iliac crest graft harvesting' by A. Joshi and G. C. Kostakis, which had been cited 28 times at the time of going to press. Joshi A and Kostakis G C. An investigation of post-operative morbidity following iliac crest graft harvesting. Br Dent J 2004; 196: 167–171. Cover illustration by Danny Allison www.dannyallison.co.uk Citation data according to Scopus: www.scopus.com.

FACTORS ASSOCIATED WITH DENTAL EROSION - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue illustrates two related papers: 'A multifactorial analysis of factors associated with dental erosion' and 'The prevalence of tooth erosion in 12-year-old children' by C. R. Dugmore and W. P. Rock. The papers had been cited 34 and 28 times, respectively, at the time of going to press. Dugmore C R, Rock W P. A multifactorial analysis of factors associated with dental erosion. Br Dent J 2004; 196: 283-286; and The prevalence of tooth erosion in 12-year-old children. Br Dent J 2004; 196: 279-282.Cover illustration by Danny AllisonCitation data according to Scopus: www.scopus.com.

THE LINK BETWEEN PERIODONTAL DISEASE AND ADVERSE PREGNANCY OUTCOME - The series of cover images featured in this volume of the Journal represent the 12 most highly cited papers published in the BDJ between 2004 and 2009. The image on the cover of this issue represents the paper 'A prospective study to investigate the relationship between periodontal disease and adverse pregnancy outcome' by S. Moore et al., which had been cited 71 times at the time of going to press. Moore S, Ide M, Coward P Y et al. A prospective study to investigate the relationship between periodontal disease and adverse pregnancy outcome. Br Dent J 2004; 197: 251-258.

Cover illustration by Danny Allison www.dannyallison.co.uk. Citation data according to Scopus: www.scopus.com.