| The development of the PAR Index (Peer Assessment Rating): reliability and validity S Richmond, WC Shaw, KD O'brien, IB Buchanan, R Jones, CD Stephens, ... The European Journal of Orthodontics 14 (2), 125-139, 1992 | 874 | 1992 |
| Effectiveness of early orthodontic treatment with the Twin-block appliance: a multicenter, randomized, controlled trial. Part 1: dental and skeletal effects K O’Brien, J Wright, F Conboy, YW Sanjie, N Mandall, S Chadwick, ... American journal of orthodontics and dentofacial orthopedics 124 (3), 234-243, 2003 | 395 | 2003 |
| Perceived aesthetic impact of malocclusion and oral self-perceptions in 14-15-year-old Asian and Caucasian children in greater Manchester NA Mandall, JF McCord, AS Blinkhorn, HV Worthington, KD O'Brien The European Journal of Orthodontics 22 (2), 175-183, 2000 | 337 | 2000 |
| Quality control in orthodontics: indices of treatment need and treatment standards WC Shaw, S Richmond, KD O'brien, P Brook, CD Stephens British dental journal 170 (3), 107-112, 1991 | 331 | 1991 |
| The use of occlusal indices: a European perspective WC Shaw, S Richmond, KD O'Brien American Journal of Orthodontics and Dentofacial Orthopedics 107 (1), 1-10, 1995 | 309 | 1995 |
| Effectiveness of treatment for Class II malocclusion with the Herbst or twin-block appliances: a randomized, controlled trial K O’brien, J Wright, F Conboy, YW Sanjie, N Mandall, S Chadwick, ... American Journal of Orthodontics and Dentofacial Orthopedics 124 (2), 128-137, 2003 | 299 | 2003 |
| The validation of the Peer Assessment Rating index for malocclusion severity and treatment difficulty L DeGuzman, D Bahiraei, KWL Vig, PS Vig, RJ Weyant, K O'brien American Journal of Orthodontics and Dentofacial Orthopedics 107 (2), 172-176, 1995 | 292 | 1995 |
| Effectiveness of early orthodontic treatment with the Twin-block appliance: a multicenter, randomized, controlled trial. Part 2: Psychosocial effects K O'Brien, J Wright, F Conboy, S Chadwick, I Connolly, P Cook, D Birnie, ... American Journal of Orthodontics and Dentofacial Orthopedics 124 (5), 488-494, 2003 | 219 | 2003 |
| A visible light-activated direct-bonding material: an in vivo comparative study KD O'brien, MJF Read, RJ Sandison, CT Roberts American Journal of Orthodontics and Dentofacial Orthopedics 95 (4), 348-351, 1989 | 199 | 1989 |
| The child perception questionnaire is valid for malocclusions in the United Kingdom K O’Brien, JL Wright, F Conboy, T Macfarlane, N Mandall American Journal of Orthodontics and Dentofacial Orthopedics 129 (4), 536-540, 2006 | 198 | 2006 |
| Quality control in orthodontics: risk/benefit considerations WC Shaw, KD O'brien, S Richmond, P Brook British dental journal 170 (1), 33-37, 1991 | 189 | 1991 |
| A randomized clinical trial to compare three methods of orthodontic space closure V Dixon, MJF Read, KD O'brien, HV Worthington, NA Mandall Journal of Orthodontics, 2014 | 182 | 2014 |
| Quality control in orthodontics: factors influencing the receipt of orthodontic treatment WC Shaw, KD O'brien, S Richmond British Dental Journal 170 (2), 66-68, 1991 | 180 | 1991 |
| Early treatment for Class II Division 1 malocclusion with the Twin-block appliance: a multi-center, randomized, controlled trial K O'Brien, J Wright, F Conboy, P Appelbe, L Davies, I Connolly, L Mitchell, ... American Journal of Orthodontics and Dentofacial Orthopedics 135 (5), 573-579, 2009 | 177 | 2009 |
| MOMENT–Management of Otitis Media with Effusion in Cleft Palate: protocol for a systematic review of the literature and identification of a core outcome set using a Delphi survey NL Harman, IA Bruce, P Callery, S Tierney, MO Sharif, K O’Brien, ... Trials 14 (1), 1-8, 2013 | 171 | 2013 |
| Do oral appliances enlarge the airway in patients with obstructive sleep apnoea? A prospective computerized tomographic study DJ Gale, RH Sawyer, A Woodcock, P Stone, R Thompson, K O'Brien The European Journal of Orthodontics 22 (2), 159-168, 2000 | 162 | 2000 |
| Residual debris and bond strength—is there a relationship? KD O'brien, DC Watts, MJF Read American Journal of Orthodontics and Dentofacial Orthopedics 94 (3), 222-230, 1988 | 156 | 1988 |
| The use of occlusal indices in assessing the provision of orthodontic treatment by the hospital orthodontic service of England and Wales KD O'Brien, WC Shaw, CT Roberts British Journal of Orthodontics 20 (1), 25-35, 1993 | 137 | 1993 |
| Assessing oral health outcomes for orthodontics--measuring health status and quality of life. K O'Brien, L Kay, D Fox, N Mandall Community dental health 15 (1), 22-26, 1998 | 136 | 1998 |
| Orthodontic treatment for prominent upper front teeth (Class II malocclusion) in children B Thiruvenkatachari, JE Harrison, HV Worthington, K D O'Brien Cochrane Database of Systematic Reviews, 2013 | 131 | 2013 |
