| 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 | 976 | 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 | 496 | 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 | 394 | 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 | 362 | 1991 |
| 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 | 360 | 2003 |
| 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 | 359 | 1995 |
| 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 | 324 | 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 | 255 | 2003 |
| 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 | 229 | 2006 |
| 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 | 224 | 1989 |
| Orthodontic treatment for prominent upper front teeth (Class II malocclusion) in children and adolescents KBSL Batista, B Thiruvenkatachari, JE Harrison, K D O'Brien Cochrane Database of Systematic Reviews, 2018 | 219 | 2018 |
| Quality control in orthodontics: risk/benefit considerations WC Shaw, KD O'brien, S Richmond, P Brook British dental journal 170 (1), 33-37, 1991 | 218 | 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 29 (1), 31-36, 2002 | 216 | 2002 |
| 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 | 210 | 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, 1-8, 2013 | 209 | 2013 |
| 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 | 188 | 1991 |
| 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 | 179 | 2000 |
| 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 | 174 | 1998 |
| Teledentistry for screening new patient orthodontic referrals. Part 1: A randomised controlled trial. NA Mandall, KD O'Brien, J Brady, HV Worthington, L Harvey British dental journal 199 (10), 659-662, 2005 | 165 | 2005 |
| 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 | 165 | 1988 |
