• Mariana Dimova-Gabrovska Medical University - Sofia
  • Desislava Dimitrova Dental Clinic ”Edinstvo” – Sofia
  • Marina Mitova Divane- logopedic workshops – Sofia


Bruxism is a condition of clenching or grinding teeth, often found in many children and adults. It is associated with rhythmic contractions of chewing muscles in static states, which often leads to a number of consequences. Patients' main complaints include tension, pain, tenderness in chewing muscles, erosion / wear of hard tooth tissues, reduced bite height, disturbance in aesthetics, etc. All this causes a disturbance of the chewing function. Parts of the structures involved in the mastication system are also a major part of the articulation apparatus, responsible for the performance of the speech. The changes in these structures, in case of bruxism, would also lead to the occurrence of pathological speech and articulation violations. This suggests a possible link between the various functional disturbances in the orofacial area. There is not big number of science papers on this subject, but available ones point to the interdependence between the degree and the manifestation of the signs and symptoms of bruxism and the violations in the articulation of consonant sounds. There have been found records, the results of which show that speech disorders occur twice as often in patients with deviations from normal occlusal interrelations for various reasons, and that speech disorders are the most common in logopedic practice. All this also determine the purpose of this study, exactly, a study of speech and assessment of articulation disorders in patients suffering from bruxism. The study includes 11 subjects aged 23 to 61 years who are diagnosed with bruxism after preliminary clinical functional analysis, manual analysis and occlusal diagnosis in DGFDT cardboard sequence. They are subjected to logopedic examination by a specialist - speech therapist, which is consisted by several parts. First - the structures of the articulation apparatus - lips, tongue, teeth, dental rows, jaws, palate, etc. are initially reviewed and evaluated. By dint of a role-playing test - their mobility, speed and ability to switch movements are also assessed. In the next stages, the sound performance of all vowels and consonants - individually, in the syllables (right, reverse, mixed) and followed (in a connected speech) is evaluated. A sample for phonematic sound perception, as well as anexamination of the mimics, is also made. The presence of sigmatism in all bruxists is established - a disturbance in the reproduction of consonant sounds from the group of the s-sounds (fizzle sounds, in Bulgarian language – с, з, ц sounds) and the shush sounds (in Bulgarian language – ш, з, ч, щ sounds), as well in their own pronouncement, in syllables also in continuous speech. Patients show good self-control of impaired articulation. There is no deviation in the articulation of the sonorous consonants (in Bulgarian language – р, л sounds), as well as in the vowels. The data obtained can be of great benefit in the future development of a diagnostic speech test in patients with bruxism.


Manfredini D, Winocur E, Guarda-Nardini L, Paesani D, Lobbezoo F. Epidemiology of bruxism in adults: a systematic review of the literature. J Orofac Pain. 2013; 27(2): 99-110;

Haynes W, Pindzola R. Diagnosis and evaluation in speech pathology, 8th edition. Pearson. 2012;

Dodd B, Zhu H, Crossbie S, Holm A, Ozanne A. Diagnostic evaluation of articulation and phonology (DEAP). Psychology Cosporation. 2002;

Shetty S, Pitti V, Satish Babu CL, Surendra Kumar GP, Deepthi BC. Bruxism: a literature review. J Indian Prosthodont Soc. 2010; 10(3): 141-148;

Ettala-Ylitalo U, Laine T. Functional disturbances of the masticatory system in relation to articulatory disorders of speech in a group of 6-8-year-old children. Archs oral Biol. 1991; 36(3): 189-194;

Pahkala R. Changes in function of the masticatory system from 7 to 10 years of age in relation to articulatory speech disorders. J Oral Rehabil. 1994; 21(3): 323-335;

Pahkala R, LaineT. Changes in TMD signs and in mandibular movements from 10 to 15 years of age in relation to articulatory speech disorders. ActaOdontol Scand. 2000; 58(6): 272-278;

Egermark-Eriksson I, Carlsson G, Ingervall B. Prevalence of mandibular dysfunction and orofacial parafunctions in 7-, 11- and 15-year old Swedish children. Eur J Orthod. 1981; 3 : 163-172;

Laine T. Association between articulatory disorders in speech and occlusal anomalies. Eur J Orthod. 1987; 9:144-150;

Baker R, Chenery H. Assesment in speech language pathology. Language Testing. 1999; 16(3): 243-247;

How to Cite
Dimova-Gabrovska, M., Dimitrova, D., & Mitova, M. (2017). INVESTIGATION OF THE SPEECH IN PATIENTS WITH BRUXISM – A PILOT STUDY. Knowledge International Journal, 19(4), 1493 - 1496. Retrieved from