12/10/2023 0 Comments Brackets lingual![]() ![]() A total of 46 patients (mean age: 22.3 ± 2.3 years) were randomly selected to construct the primary sample. A total of 51 out of 56 subjects gave their informed consent after receiving an explanation about clinical trial design orally and in a written format. After clinical, dental cast and radiographic assessment, only 56 patients accurately met the following inclusion criteria: (1) Class II, Division 1 malocclusion (2) age range of 15 to 30 years (3) presence of all permanent teeth, except for third molars (4) first language of participants was Arabic (5) no previous orthodontic treatment (6) no anterior crossbite and (7) no craniofacial syndromes, cleft lip and/or palate (soft and/or hard), or history of speech and hearing disorders. Records of 512 patients from the waiting list of the Orthodontic Department at UHDS (from January 2012 to January 2013) were reviewed. This research project was approved by University of Hama School of Dentistry (UHDS) Ethics Committee and was funded by the University of Hama Postgraduate Research Budget. Participants, eligibility criteria and settings The null hypothesis was: there are no statistically significant differences in speech performance and in levels of oral impairment between patients using either STb or 7 th Generation brackets. ![]() The current randomized controlled trial aimed to compare (1) speech performance by means of auditive analysis and (2) levels of oral impairment between two types of lingual brackets. 17, 18 Although acoustic analysis has been previously employed to assess speech performance in patients with specific types of lingual brackets, 12, 15 to date, there is no trial conducted to compare objectively different types of lingual brackets.Īssessment of speech performance may differ from one language to another, 14 and it seems that there is only one published paper comparing speech impairment between lingual and labial brackets in patients speaking the Arabic language as their native language. 16 However, few studies have focused on the effect of bracket type on oral impairment and several speech assessments have been performed semi-objectively and subjectively. 8, 10, 11, 12 Some of them have compared lingual appliances with labial ones regarding sound production and oral discomfort, 13, 14, 15 whereas another has compared different laboratory procedures and concluded that thinner appliances would enhance patients' adaptation to lingual brackets. Several studies have investigated patients' attitude and oral discomfort after lingual appliance placement. ![]() 2 - 6 However, placement of orthodontic brackets on the lingual surfaces of teeth causes changes in their morphology, which results in articulation problems, chewing difficulties, tongue irritation and other impairments. 1 The lingual orthodontic technique gave an ultimate solution for patients who do not want their appliances to be shown. Recently, the number of adults who demand orthodontic treatment is increasing and even those with high motivation are likely to have some concern about the appearance of orthodontic appliances. ![]()
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