Impact of orthodontic treatment on speech and phonetics: a review


  • Hussam E. Najjar Department of Orthodontics, Al Thager Hospital, Jeddah, Saudi Arabia
  • Sarah Abdullah Alzaid College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia
  • Amjad Mohammad Alasmari College of Dentistry, King Khalid University, Abha, Saudi Arabia
  • Sultan Ali Alrashdi Ministry of Health, Al Qassim, Saudi Arabia
  • Asim Mohammed Alqahtani College of Dentistry, King Khalid University, Abha, Saudi Arabia
  • Samia Mussaed Alrhile Dental Department, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
  • Saud Salman Alqahtani Loran Dental Clinics, Riyadh, Saudi Arabia
  • Shorouq Shaker Aldrees Dhurma General Hospital, Riyadh, Saudi Arabia
  • Ahmed Farhan Alanazi College of Dentistry, Vision Colleges, Riyadh, Saudi Arabia
  • Afnan Ali Alamri Al Muzahmiah General Hospital, Riyadh, Saudi Arabia
  • Sama Abdullah Alotaibi Specialized Clinics Centre, Sakaka, Saudi Arabia



Orthodontic treatment, Speech phonetics, Orthodontic appliances, Speech disturbances, Labial fixed appliances


Orthodontic devices, including both fixed and removable devices, have the potential to impact dental anatomy, the space within the oral cavity, the displacement of the tongue, and the production of speech. The usage of fixed labial appliances may cause transient or persistent speech and phonetics changes, particularly affecting sibilant and stopped sounds. Lingual fixed appliances, while providing aesthetic advantages, can lead to difficulties in maintaining oral hygiene, pain in the tongue, and speech disturbances. Orthodontic retainers, used post-treatment, can also affect speech and phonetics by altering the oral cavity space and tongue position. Other appliances like removable appliances, palatal expanders, and prosthetic dental appliances may also disrupt speech production. Objective, semi-objective, and subjective assessments are utilized to evaluate speech disruptions induced by orthodontic devices. Patients considering orthodontic aligners should be informed about potential temporary limitations in speech production, which can be managed by removing the device when necessary. The adaptation to orthodontic treatment may vary based on individual characteristics. Orthodontists should consider these effects and communicate them to patients. This review article explores the effect of orthodontic treatment on speech and phonetics.


Malik OH, McMullin A, Waring DT. Invisible orthodontics part 1: invisalign. Dental Update. 2013;40(3):203-15.

Paley JS, Cisneros GJ, Nicolay OF, LeBlanc EM. Effects of fixed labial orthodontic appliances on speech sound production. Angle orthodontist. 2016;86(3):462-7.

Feu D, de Oliveira BH, de Oliveira Almeida MA, Kiyak HA, Miguel JA. Oral health-related quality of life and orthodontic treatment seeking. Am J Orthodont Dentofacial Orthop. 2010;138(2):152-9.

Papageorgiou SN, Gölz L, Jäger A, Eliades T, Bourauel C. Lingual vs. labial fixed orthodontic appliances: systematic review and meta-analysis of treatment effects. Eur J Oral Sci. 2016;124(2):105-18.

Haydar B, Karabulut G, Ozkan S, Aksoy AU, Ciğer S. Effects of retainers on the articulation of speech. Am J Orthodont Dentofacial Orthop. 1996;110(5):535-40.

Doshi UH, Bhad-Patil WA. Speech defect and orthodontics: a contemporary review. Orthodont. 2011;12(4):340-53.

Ata-Ali F, Ata-Ali J, Ferrer-Molina M, Cobo T, De Carlos F, Cobo J. Adverse effects of lingual and buccal orthodontic techniques: A systematic review and meta-analysis. Am J Orthodont Dentofacial Orthop. 2016;149(6):820-9.

Rai AK, Rozario JE, Ganeshkar SV. Comparison of speech performance in labial and lingual orthodontic patients: A prospective study. Dental Res J. 2014;11(6):663-75.

Araújo EA, Andrade I, Jr, Brito Gde M, Guerra L, Horta MC. Perception of discomfort during orthodontic treatment with tongue spurs. Orthodontics. 2011;12(3):260-7.

Wan J, Wang T, Pei X, Wan Q, Feng W, Chen J. Speech effects of Hawley and vacuum-formed retainers by acoustic analysis: A single-center randomized controlled trial. Angle Orthodontist. 2017;87(2):286-92.

Damasceno Melo PE, Bocato JR, De Castro Ferreira Conti AC. Effects of orthodontic treatment with aligners and fixed appliances on speech. Angle Orthodontist. 2021;91(6):711-7.

Feldman EW. Speech articulation problems associated with placement of orthodontic appliances. J Speech Hearing Disorders. 1956;21(1):34-8.

Chen J, Wan J, You L. Speech and orthodontic appliances: a systematic literature review. Eur J Orthodont. 2018;40(1):29-36.

Fujita K. New orthodontic treatment with lingual bracket mushroom arch wire appliance. Am J Orthodont. 1979;76(6):657-75.

McDonald F, Cobourne M. Adult orthodontics: perils and pitfalls. Progress Orthodont. 2007;8(2):308-13.

Lawson RB. Extraction treatment in lingual orthodontics. J Orthodont. 2013;40(1):S38-48.

Dalessandri D. Reduction in incidence of white spot lesions with lingual appliances. Am J Orthodont Dentofacial Orthoped. 2016;149(1):7-8.

Afrashtehfar KI. Evidence regarding lingual fixed orthodontic appliances' therapeutic and adverse effects is insufficient. Evidence-Based Dentistr. 2016;17(2):54-5.

Long H, Zhou Y, Pyakurel U. Comparison of adverse effects between lingual and labial orthodontic treatment. Angle Orthodont. 2013;83(6):1066-73.

Runte C, Lawerino M, Dirksen D, Bollmann F, Lamprecht-Dinnesen A, Seifert E. The influence of maxillary central incisor position in complete dentures on /s/ sound production. J Prosthet Dentistr. 2001;85(5):485-95.

Sinclair PM, Cannito MF, Goates LJ, Solomos LF, Alexander CM. Patient responses to lingual appliances. J Clin Orthodont. 1986;20(6):396-404.

Erb DP. Speech effects of the maxillary retainer. Angle Orthodontist. 1967;37(4):298-303.

Sergl HG, Zentner A. A comparative assessment of acceptance of different types of functional appliances. Eur J Orthodont. 1998;20(5):517-24.

Nedwed V, Miethke RR. Motivation, acceptance and problems of invisalign patients. J Orofacial Orthop. 2005;66(2):162-73.

Pogal-Sussman-Gandia CB, Tabbaa S, Al-Jewair T. Effects of Invisalign® treatment on speech articulation. Int Orthodont. 2019;17(3):513-8.




How to Cite

Najjar, H. E., Alzaid, S. A., Alasmari, A. M., Alrashdi, S. A., Alqahtani, A. M., Alrhile, S. M., Alqahtani, S. S., Aldrees, S. S., Alanazi, A. F., Alamri, A. A., & Alotaibi, S. A. (2023). Impact of orthodontic treatment on speech and phonetics: a review. International Journal Of Community Medicine And Public Health, 10(8), 2995–2999.



Review Articles