Journal of IMAB - Annual Proceeding (Scientific Papers)
Publisher: Peytchinski, Gospodin Iliev
ISSN: 1312 773X (Online)
Issue: 2014, vol. 20, issue 5
Subject Collection: Oral and Dental Medicine
Pages: 648-654
DOI: 10.5272/jimab.2014205.648
Published online: 18 November 2014

J of IMAB 2014 Oct-Dec;20(5):648-654
Miroslava DinkovaCorresponding Autor.
Department of Orthodontics, Faculty of Dental Medicine, Medical University of Sofia, Bulgaria.

Purpose. The purpose of this study is to follow-up the biometrical and skeletal vertical changes in patients with deep overbite in mixed dentition after a functional orthodontic treatment with Trainer System™ is conducted.
Material and Methods. 32 patients (20 girls and 12 boys) with deep overbite in mixed dentition were followed-up. An orthodontic treatment with Trainer System™, including Trainer for kids (T4K)-blue, T4K-red and Myobrace was conducted. The recommended time for wearing the appliances was 8–12 hours, mostly at the night and 1–2 hours total time during the day. All the patients were photo-documented. Impressions, panoramic radiographs and lateral cephalograms were taken before the beginning of the treatment and at the end of every single step in relation with every change of appliances. Comparative biometrical and cephalometric analyses were made. The data was statistically processed.
Results. The comparative biometrical analyses showed reduction of overbite with 2.5–3.5 mm after the end of the orthodontic treatment. 62% of cases showed relapse from 0.5 to 1mm. After the end of the orthodontic treatment an inclination of upper and lower incisors and changes with M/SN, М/F, ANB, SNA, SNB values were established.
Conclusions. If untreated during the growing period, deep overbite leads to serious functional disorders, pathologic abrasion and myo-articular problems. Myofunctional Trainer System™ is successfully applied in the management of deep overbite in growing kids with early mixed dentition. The design of appliances helps the right positioning of tongue and jaws, removes bad habits, harmonizes tooth arches, corrects the vertical problems.

Key words: deep overbite, Trainer System™, mixed dentition, myofunctional appliance,

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Correspondence to: Dr. Miroslava Dinkova, 6, "Jerusaliim" blvd., Sofia, Bulgaria; E-mail:

1. Nanda R. The Differential Diagnosis and Treatment of Excessive Overbite. Dent Clin North Am. 1981 Jan;25(1):69-84. [PubMed]
2. Nelson C, Harkness M, Herbison P. Mandibular changes during functional appliance treatment. Am J Orthod Dentofacial Orthop. 1993 Aug;104(2):153-61. [PubMed]
3. Schudy FF. The control of vertical overbite in clinical orthodontics. Angle Orthod. 1968 Jan;38(1):19-39. [PubMed]
5. Aleksić E, Lalić M, Milić J. Trainer System Appliances in Early Treatment of Malocclusions. Serbian Dental Journal, 2012; 59(2):96-103. [CrossRef]
6. Amarnath BC, Prashanth CS, Dharma RM. Clinical Overviewof Deep Bite Management. IJCD, 2010 Nov;1(2):30-33.
7. Defabianis P. TMJ internal derangement treatment in the growing patient: effect of functional appliance therapy on condyle and fossa relocation. J Clin Pediatr Dent, 2004 Fall;29(1):11-18. [PubMed]
8. Oudet C, Petrovic A, Garcia P. An experimental orthopedic treatment of the rat mandible using a functional appliances alters the fiber and myosin types in masticatory muscles. Repord Nutr Dev. 1988; 28(3B):795-803. [PubMed]
9. Ramirez-Yañez G, Sidlauskas A, Junior E, Fluter J. Dimensional changes in dental arches after treatment with a prefabricated functional appliance. J Clin Pediatr Dent., 2007 Summer;31(4):279-283. [PubMed]
10. Rabie AB, She TT, Harley VR. Forward mandibular positioning up-regulates SOX9 and type II collagen expression in the glenoid fossa. J Dent Res. 2003 Sep;82(9):725-30. [PubMed] [CrossRef]
11. Tulloch JF, Phillips C, Kock G, Proffit WR. The effect of early intervention on skeletal pattern in Class II malocclusion: a randomizied clinical trial. Am J Orthod Dentofacial Orthop. 1997 Apr;111(4):391-400. [PubMed] [CrossRef]
12. Tulloch JF, Proffit WR, Phillips C. Influences on the outcome of early treatment for Class II malocclusion. Am J Orthod Dentofacial Orthop. 1997 May;111(5):533-54. [PubMed] [CrossRef]
13. Usumez S, Uysal T, Sari Z, Basciftci FA, Karaman AI, Guray E. The effects of early preorthodontic Trainer treatment on Class II, division 1 patients. Angle Orthod, 2004 Oct;74(5):605–609. [PubMed]
14. Yagci A, Uysal T, Kara S, Okkesim S. The effect of myofunctional appliance treatment on the perioral and masticatory muscles in Class II, Division 1 patients. World J Orthod. 2010 Summer;11(2):117-122. [PubMed]
15. Angle EH. Treatment of Malocclusion of the Teeth: Angle's System. Chapter III Facial Art. 7'th ed. Philadelphia: The S.S. White Dental Manufacturing Company 1907: 60-87
16. Gupta D, Aggarwal M. Management of deep bite with myofunctional trainer system (A case report). IJDS, 2010 Jan;2(1):15-17.
17. Vlachakis M, Bratu E. Functional possibilities of prevention in orthodontics. Oral Health Dent Manag. 2007 Jun;6(2):35-38.
18. Rabie AB, She TT, Hägg U. Functional appliance therapy accelerates and enhances condylar growth. Am J Orthod Dentofacial Orthop. 2003 Jan;123(1):40-48. [PubMed] [CrossRef].

Received: 07 September 2014
Published online: 18 November 2014

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