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:: Volume 26, Issue 1 (Spring 2008) ::
J Dent Sch GYEAR__, 26(1): 8-13 Back to browse issues page
The dentoskeletal effect of mandibular tongue guard in Cl II/I malocclusion
Shahin Emami Meibodi Corresponding Author: Dr. *1, Abdolrahman Showkatbakhsh Dr., Nazanin Alamehzadeh Dr.
1- , emami2@gmail.com
Abstract:   (6406 Views)

Background and Aim: The prevalence of Cl II malocclusion with tongue thrust and open bite is high. The pressure of the tongue during swallowing and its physiological activity could be transferred to the maxillary complex by the tongue crib and might advance the maxilla to an unfavorable position. This study aimed to evaluate the dentoskeletal change in the Cl II division 1 patients with anterior tongue thrust and mandibular deficiency treated by mandibular tongue guard, from a private office and orthodontic department of Azad University in Tehran.

Methods & Materials: The sample consisted of 23 patients, (14 females aged 8 years and 9 months and 9 males aged 10 years and 6 months), with Cl II div 1 malocclusion in late mixed dentition with anterior tongue thrust. The patients were treated by mandibular tongue guard. Lateral Cephalograms were obtained and traced before and after treatment and certain angular and linear variables were measured. The pretreatment and post treatment measurements were compared using Paired t test to evaluate the significance of the results.

Results: The findings indicated that SNB, facial angle, the distance between B and Pogonion to the reference line and Interincisal angle were significantly increased (P<0.05). The changes were mainly caused by mandibular growth, were observed after treatment by mandibular tongue guard. Decrease of IMPA, 1-SN, ANB, Wits were significant (P<0.05). The changes of Jarabak index, SN-MP, SNA, Y-axis were not significant.

Conclusion: In Cl II div 1 patients with mandibular deficiency combined with tongue thrust, mandibular tongue guard caused slight increase in mandibular growth.

J Dent Sch 2009 26(1): 2 

Keywords: Mandibular tongue guard, Tongue thrust, Dentoskeletal changes
Full-Text [PDF 184 kb]   (1286 Downloads)    
Type of Study: Original Article | Subject: Special
Received: 2006/09/6
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Emami Meibodi S, Showkatbakhsh A, Alamehzadeh N. The dentoskeletal effect of mandibular tongue guard in Cl II/I malocclusion. J Dent Sch. 2008; 26 (1) :8-13
URL: http://jds.sbmu.ac.ir/article-1-284-en.html


Volume 26, Issue 1 (Spring 2008) Back to browse issues page
مجله دانشکده دندانپزشکی دانشگاه علوم پزشکی شهید بهشتی Shahid Beheshti University Dental Journal
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