menu

Institute of Dentistry

People menu

Professor Ama Johal, BDS (Hons), MSc, PhD, FDS, MOrth RCS, DMS, FDS (Orth) RCS, FHEA

Ama

Professor /Hon. Consultant Orthodontist Centre Lead Bioengineering Academic Lead Orthodontics

Email: a.s.johal@qmul.ac.uk
Telephone: +44 20 7882 8651
Room Number: Office 6, 4th Floor, Dental Institute

Profile

Ama Johal graduated from Sheffield University in 1989, awarded a BDS degree with Honours.  He subsequently undertook 3 years of general professional training, completing his Fellowship [FDS], before being appointed Specialist Registrar in Orthodontics at The Royal London Hospital in 1993. During his orthodontic training (1993-1996), obtaining MOrth RCS and MSc [distinction]. During Senior Registrar training at Guy's Hospital, he completed his Exit Fellowship (FDS Orth. RCS), Certificate in Teaching and Diploma in Management Studies [distinction].  Appointed Senior Clinical Lecturer/Hon. Consultant at Barts and The London in 2000, he completed a PhD (2005).  He was appointed Reader grade in 2014 and subsequently Professor in 2016.

Ama has been the Undergraduate and post-graduate Lead for Orthodontics for a number of years and is currently Academic Lead for Orthodontics and Centre Lead for Oral Bioengineering within the Institute. He has also been Clinical Lead for Orthodontic services and is currently Clinical Lead for Hypodontia services.

Teaching

Having obtained a Certificate in Teaching and appointed fellow in the Higher Education Academy, in recognition of his teaching and learning experience, Ama has significantly contributed to the learning and teaching environment at both discipline (undergraduate and postgraduate) and interdisciplinary level, within the University, nationally and internationally. He was appointed Staff-Student President for the Dental Society and nominated for the QM Draper’s award for excellence in teaching and appointed President of the Royal London Orthodontic Alumni.

He has actively contributed to the establishment of the New under-graduate curriculum and was 1 of 5 UK academics to contribute to a nationally funded (£75K) study, designed to develop a range of e-learning modules, to enhance the undergraduate learning experience. 

The QM postgraduate programme in Orthodontics, is regarded amongst the best in the UK and this reflected in the popularity and attendance of StR’s and higher Registrars at four national training courses which I jointly run and contribute towards. As Program lead and Deanery appointed Educational Supervisor, I play a key role in the development of trainees and this has been acknowledged by my students winning a range of National and International prizes within the Specialty and Sleep Medicine, for example the British Sleep Societies ‘Young Researcher Award, 2013’.  

Research

Research Interests:

Ama’s principle research interests have primarily focussed on sleep-related breathing disorders and their management.  He has been awarded the Belle Maudsley Prize for 'The Relationship between Obstructive Sleep Apnoea and Dentistry'; Gunter Russell Research Poster Award by British Orthodontic Society 'Responses to mandibular protrusion in subjects with obstructive sleep apnoea' and The Arnold Huddart New Researcher Medal by The Craniofacial Society of Great Britain for 'The Orthodontist's contribution to the management of obstructive sleep apnoea'.  His PhD was partly funded by Shirley Glasstone Hughes Research Prize Fund awarded by the British Dental Association and a Scholarship Award General Dental Council.  He has subsequently been awarded: a European Orthodontic Society Research Grant for evaluating 'The role of three-dimensional fluoroscopy as a prognostic indicator in the management of obstructive sleep apnoea'; Schottlander Oral Research Presentation Prize for the Advancement of knowledge in Prosthetic dentistry by the British Society for the Study of Prosthetic Dentistry; Chapman Prize for the Best research Paper Submission entitled  'The role of mandibular advancement appliances in the management of sleep-related breathing disorders' by the British Orthodontic Society; Gunter Russell Research Poster Award for 'An investigation of electromyographic changes with mandibular advancement splint therapy'.

His other research interests include assessing the quality of life and determinants of Orthodontic interventions, through clinical trials.  As part of a National Clinical Orthodontic Research Collaboration, received a number of grant awards from the British Orthodontic Society Research Foundation. 

Ama successfully introduced a PhD program in Orthodontics, with 3 completed projects in the defined timeline and currently a further 5 in varying stages of study.

Publications

Collier S, Pandis N, Johal A, Qureshi U, Sharma PK, Fleming PS. A prospective cohort study assessing the appearance of retrieved aesthetic orthodontic archwires. Orthodontics and Craniofacial Research. 2017;1–6.

Madahar A, Qureshi U, Johal A. The quality of information found on the internet with regards to different Orthodontic treatment modalities. Journal of Orthodontics 2017; 44 (2): 82-89.

Wong FSL, Hill R, Johal A, Al-eesa N. Fluoride Containing Bioactive Glass Composite For Orthodontic Adhesives. Dental Materials (In press 2017).

Agha B, Johal A. Phenotyping in Obstructive Sleep Apnoea-Hypopnoea Syndrome: A Systematic Review & Meta-Analysis. J Sleep Res. 2017 Apr;26(2):122-131. doi: 10.1111/jsr.12485. Epub 2016 Dec 26

Johal A, Haria P, Manek S, Joury E, Riha R. Ready-Made Versus Custom-Made Mandibular Repositioning Devices in Sleep Apnea: A Randomized Clinical Trial. Journal of Clinical Sleep Medicine. J Clin Sleep Med. 2017 Feb 15;13(2):175-182. doi: 10.5664/jcsm.6440

G Sharma, A Johal, H M Liversidge. Predicting agenesis of the mandibular second premolar from adjacent teeth. PLoS ONE 2016; 10(12): e0144180. doi:10.1371/journal.pone.0144180

O’Rourke N, Albeedh H, Sharma P, Johal A. The Clinical Effectiveness of Bonded and Vacuum Formed Retainers: A Randomized Controlled Clinical Trial. Am J Orthod Dentofacial Orthop. 2016 Sep;150(3):406-15. doi: 10.1016/j.ajodo.2016.03.020

Greewal B, Lee RT, Zou LF, Johal A. Royal London Space Analysis: Plaster Versus Digital model assessment. Eur J Orthod. 2016 Aug 10. pii: cjw052. [Epub ahead of print]

Nabhan AF, Abbas NH, Fleming PS, Johal A, Sadek MM. Self-ligating brackets versus conventional pre-adjusted edgewise brackets for treating malocclusion (Protocol). Cochrane Database of Systematic Reviews 2016, Issue 10. Art. No.: CD012407. DOI: 10.1002/14651858.CD012407.

Johal A, Jahaur P, Alqattan F, Kassim S, Mc Cloughlin K. The efficacy of mandibular advancement appliances as a treatment alternative to continuous positive airway pressure in moderate OSAHS. Journal of Sleep Disorders and Management 2016; 2:013.

Chatzopoulou D, Johal A. Management of gingival recession in the orthodontic patient. Seminars in Orthodontics. American Association of Orthodontics 2015; 21: 15-26

Johal A, Fleming P, Manek S, Marinho V. Mandibular advancement splint (MAS) therapy for obstructive sleep apnoea - an overview and quality assessment of systematic reviews. Sleep and Breathing 2015; 19: 1101-1108

Sudak R, Johal A, Fleming F. Orthodontic treatment prior to 11 years. A systematic review and meta-analysis. Journal of Dentistry 2015; 43: 477–486

Fleming PS, Fedorowicz Z, Johal A et al. Surgical adjunctive procedures for accelerating orthodontic treatment.Cochrane Database of Systematic Reviews 2015; Issue 6. Art No: CD010572. DOI: 10.1002/14651858.CD010572.pub2

Cunningham S, Johal A. Orthognathic correction of dento-facial discrepancies. British Dental Journal 2015; 218: 167-175

PE Benson, T Da’as, A Johal, NA Mandall, AC Williams, SR Baker, Z Marshman. Relationships between dental appearance, self-esteem, socio-economic status, and oral health-related quality of life in UK schoolchildren: A 3-year cohort study. The European Journal of Orthodontics 2015;37: 481-490

Johal A, Sharma NR, McLaughlin K, Zou L. The reliability of thermoform retainers: a laboratory-based comparative study The European Journal of Orthodontics 2015; 37: 503-507

Johal A, Joury E. What factors predict the uptake of orthodontic treatment amongst adults? American Journal of Orthodontics and Dentofacial Orthopedics 2015; 147: 704-710

Pacha M, Fleming P, Johal A. A comparison of the efficacy of fixed versus removable functional appliances in children with Class II malocclusion: A systematic review. European Journal of Orthodontics 2015; doi: 10.1093/ejo/cjv086

Johal A, Alyaqoobi I, Patel R, Cox S.  The impact of orthodontic treatment on quality of life and self-esteem in adult patients. The European Journal of Orthodontics 2014; doi: 10.1093/ejo/cju047

Fleming, F.S., Lee R., McDonald T., Pandis N, Johal, A. The timing of significant arch dimensional changes with fixed appliances: Data from a randomised controlled trial. Journal of Dentistry 2014; 42: 1-6

Johal A, Fleming P, Abed Al Jawad F. A prospective longitudinal controlled assessment of pain experience and oral health related quality of life in adolescents undergoing fixed appliance treatment. Orthodontics and Craniofacial Research 2014; 17: 178-186

Fleming, F.S., Johal, A., Pandis N. The effectiveness of laceback ligatures during initial orthodontic alignment: A systematic review and meta-analysis. European Journal of Orthodontics. 2013; 35; 539-546.

Joury, E., Marcenes, W., Johal, A. The role of psychosocial factors in predicting orthodontic treatment outcome at the end of one year of active treatment. European Journal of Orthodontics. 2013; 35: 205-15.

Johal A, Katsaros C, Kiliaridis S, Leitao P, Rosa M, Sculean A, Weiland F, Zachrisson B. State of the science on controversial topics: orthodontic therapy and gingival recession (a report of the Angle Society of Europe 2013 meeting). Progress in Orthodontics 2013; 14:16-18

Johal A, Abed Al Jawad F, Marcenes W, Croft N (2013). Does Orthodontic treatment harm children’s diets? Journal of Dentistry 2013; Sep 7. doi:pii: S0300-5712(13)00237-6. 10.1016/j.jdent.2013.08.025.

Suchak, A., Johal, A., Wade, A. Useful concepts for critical appraisal –Part 1 study design. Orthodontic Update 2012; 5: 57-60

Suchak, A., Johal, A., Wade, A. Useful concepts for critical appraisal –Part 2 considering chance. Orthodontic Update 2012; 5: 82-88.

Suchak, A., Johal, A., Wade, A. Useful concepts for critical appraisal –Part 3 associations, outcomes and errors. Orthodontic Update 2012; 5: 113-117.

Johal A, Katsaros C, Kuijpers-Jagtman AM, ASE Membership Group (2012). State of the science on controversial topics: Missing maxillary lateral incisors – a report of the Angle Society of Europe 2012 meeting. Progress in Orthodontics doi.org/10.1186/2196-1042-14-20.

Fleming PS, Lee RT, Marinho V, Johal A. Comparison of maxillary arch dimensional changes with passive and active self-ligation and conventional brackets in the permanent dentition: a multi-centre, randomized controlled trial. American Journal of Orthodontics and Dentofacial Orthopedics 2012; 144:185-193

Al Jawad, F., Croft, N., Cunningham, S., Johal, A. A qualitative study of the effects of fixed orthodontic treatment on dietary intake and behaviours. European Journal of Orthodontics. 2012; 34:432-436

Hayes, M., Johal, A. The influence of malocclusion on the diagnostic value of the dental pantomagram in the upper labial segment. Orthodontics and Craniofacial Research, 2012; 15:169-77

Fleming, F.S., Johal, A., Pandis N. Self-etch primers and conventional acid-etch technique for orthodontic bonding: A systematic review and meta-analysis. American Journal of Orthodontics and Dentofacial Orthopedics 2012; 142: 83-94.

Cunningham, S., Bearn, D., Benson, P., Johal, A., Millet, D., O’Brien, K., Luther, F. In search of the sample: recent experiences of a clinical trial team in orthodontics. Contemporary Clinical trials 2011; 32: 530-534.

Fleming, F.S., Marinho, V., Johal, A. Orthodontic measurements on digital study models compared with plaster: A systematic review. Orthodontics and Craniofacial Research 2011; 14:1-16. 

Johal, A., Battagel, J.M., Hector, M.P. Controlled, prospective trial of psychosocial function before and after mandibular advancement splint therapy. American Journal of Orthodontics and Dentofacial Orthopedics. 2011; 139:581-7

Cunningham, S., Bearn, D., Benson, P., Johal, A., Millet, D., O’Brien, K., Luther, F. In search of the sample: recent experiences of a clinical trial team in orthodontics. Contemporary Clinical trials 2011; 32: 530-534.

Fleming, F.S., Johal, A. Self-ligating brackets in orthodontics: A systematic review. Angle Orthodontist 2010; 80: 575-584

Joury, E., Johal, A., Marcenes, W. The role of socioeconomic position in predicting orthodontic treatment outcome at the end of one year of active treatment. European Journal of Orthodontics, 2010; 33:263-269. 

Church SKJ, Littlewood SJ, Blance A, Gowans AJ Hodge, TM, Spencer J, Johal, A. Are general dental practitioners effective in the management of non-apnoeic snoring using mandibular advancement appliances? British Dental Journal 2009; 206, E15.

Johal, A. A review of the use of mandibular advancement appliances in sleep-disordered breathing. Dental Update 2008; 35, 230-235.

Owens A-M, Johal A. The use of near-end of treatment panoramic radiographs in the assessment of mesio-distal root angulation. Angle Orthodontist 2008; 78, 475-481.  

Fleming, P.S., Johal, A., Dibiase, A.T. (2008) Managing malocclusion in the mixed dentition: six keys to success. Part 1. Dental Update, 35, 607-610.

Fleming PS, Johal A, Dibiase AT. Managing malocclusion in the mixed dentition: six keys to success. Part 2. Dental Update 2008; 35, 673-676.

Johal A, Cheung MH, Marcenes W. The impact of two different malocclusion traits on quality of life. British Dental Journal, 2007; 202, E6

Johal A, Cheung MYH, Marcenes W. The impact of two different malocclusion traits on quality of life: Research summary, questions and answers. British Dental Journal, 2007; 202, 88-89.

Johal A, Hector, MP, Battagel JM, Kotecha BT. The impact of sleep nasendoscopy on the outcome of mandibular advancement splint therapy in subjects with sleep-related breathing disorders. The Journal of Laryngology and Otology 2007; 121, 668-675

Johal A, Patel S, Battagel JM. The relationship between craniofacial anatomy and obstructive sleep apnoea: a case-controlled study. Journal of Sleep Research 2007; 16, 319-326.

Johal A, Gill G, Ferman A, Mclaughlin K. The effect of mandibular advancement splints on awake upper airway and masticatory muscle activity in patients with obstructive sleep apnoea. Clinical Physiology and Functional Imaging 2006; 27, 47-53.

Johal A. Health-related quality of life in patients with sleep disordered breathing: Effect of mandibular advancement appliances. The Journal of Prosthetic Dentistry 2006; 96, 298-302.

Johal A. Obstructive sleep apnoea. Dental Nursing, 2006; 2: 118-120.

Battagel JM, Johal A, Kotecha BT. Sleep nasendoscopy as a predictor of treatment success in snorers using mandibular advancement splints. The Journal of Laryngology and Otology 2005; 119, 106-112.

Johal A, Arya D, Winchester LJ, Venn PJH, Brooks H. The effect of a mandibular advancement splint in subjects with sleep-related breathing disorders. British Dental Journal 2005 199, 591-596. 

Johal A, Battagel JM, Kotecha BT. Sleep nasendoscopy: a diagnostic tool for predicting treatment success with mandibular advancement splints in obstructive sleep apnoea. European Journal of Orthodontics 2005; 27, 606-6614.

Johal A, Conaghan C. Maxillary morphology in obstructive sleep apnea: A cephalometric and model study. Angle Orthodontist 2004; 74, 648-656.

Johal A, Kirschen R. The valuable contribution of space analysis in the planning and execution of orthodontic treatment. Journal of Orthodontics 2003; 30, 178.

Battagel JM, Johal A, Smith A-M, Kotecha B. Postural variation in oropharyngeal dimensions in subjects with sleep disordered breathing: a cephalometric study. European Journal of orthodontics 2002; 24, 263-276.

Ismail SFH, Johal A. The role of implants in orthodontics. Journal of Orthodontics, 2002; 29, 239-245.

Johal A. The Orthoworld Specialist Practitioner Prize Cases 2000 Journal of Orthodontics 2002; 29, 251-265.

Johal A, Battagel JM. Current principles in the management of obstructive sleep apnoea with mandibular advancement appliances. British Dental Journal 2001; 190, 532-536

Johal A, Loh S, Heng JK. A clinical investigation into the behaviour of crimpable archwire hooks. Journal of Orthodontics 2001; 28, 203-205

Johal A, Battagel JM, Kotecha B. A cephalometric comparison of subjects with snoring and obstructive sleep apnoea. European Journal of Orthodontics 2000; 22, 353-365

Battagel JM, Johal A. A cephalometric comparison of normal weight and obese subjects with obstructive sleep apnoea. Radiography 2000; 6, 283-292

Johal A, Battagel JM. An investigation into the changes in airway dimension and the efficacy of mandibular advancement appliances in subjects with Obstructive Sleep Apnoea. British Journal of Orthodontics 1999; 26, 205-210

Johal A, Harper C, Sherriff M. Properties of crimpable archwire hooks: A laboratory investigation. European Journal of Orthodontics 1999; 21, 679-683

Battagel JM, Johal A, L’Estrange PR, Croft CB, Kotecha B. Changes in airway and hyoid position in response to mandibular protrusion in subjects with Obstructive Sleep Apnoea. European Journal of Orthodontics 1998; 21, 353-376

Johal A. The relationship between Obstructive Sleep Apnoea and Dentistry: Part 1 Aetiology and Diagnosis. Dental Update 1998; 25, 380-383.

Johal A. The relationship between Obstructive Sleep Apnoea and Dentistry: Part 2 Management. Dental Update 1998; 25, 474-477.

Johal A, Ide M. Orthodontics in the adult patient, with special reference to the periodontally compromised patient. Dental Update 1998; 26, 101-108

Johal A, Lee RT. The periodontal-orthodontic interface: A simple solution to a difficult problem. British Journal of Orthodontics 1997; 25, 95-99.

Johal A. Submerged Deciduous Molars: A Review and Alternative Treatment Approach. European Journal of Prosthodontics and Restorative Dentistry 1997; 5, 5-9

Johal A, Battagel JM. Dental crowding: A Comparison of Three Methods of assessment. European Journal of Orthodontics 1997; 19, 543-551.

Johal A, Chate RAC. An assessment into cross infection control in a District General Hospital. Orthodontic Audit Working Party, Royal College of Surgeons of England. 1997; 10.

Battagel JM, Johal A, Crow V. The Assessment of crowding without the need to record arch perimeter.  Part II: Crowded and Irregular arches. British Journal of Orthodontics 1996; 23, 229-236.

Johal A, Davies SJ, Franklin CD. Condylar metastasis: a review and case report. British Journal of Oral and Maxillofacial Surgery 1994; 32,180-182.

PhD Supervision

PhD and MSc supervision.

Return to top