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Citation Information : Australasian Orthodontic Journal. Volume 31, Issue 1, Pages 2-13, DOI: https://doi.org/10.21307/aoj-2020-134
License : (CC BY 4.0)
Published Online: 15-August-2021
Introduction: The aim of this study was to evaluate the dentoskeletal effects of a modified slow maxillary expansion appliance (MSMEA) during the transition from the mixed to the permanent dentition.
Methods: Forty subjects presenting with posterior crossbites were divided into two groups. Twenty-three subjects were assigned to a treatment group (mean age: 9.45 years) and 17 subjects assigned to a control group (mean age: 9.25 years). An MSMEA with acrylic occlusal coverage limited to the palatal cusps was used to provide maxillary expansion. The mean slow expansion treatment period was 7.8 months, while the mean observation period continued for 14.8 months of a 22.6-month total study period.
Results: Substantial dental and skeletal effects were observed following treatment with the MSMEA. Most maxillary inter-molar and deciduous inter-second molar width increases were maintained in the permanent dentition (91% and 97%, respectively). Skeletal maxillary transverse dimensions, which increased by 2 mm after active expansion, were significantly greater (p < 0.001) when compared with the controls.
Conclusion: The findings suggested that an MSMEA provided orthopaedic and dental effects as a result of posterior crossbite correction. The effects of the appliance seen during the mixed dentition were maintained in the permanent dentition.
1. Boysen B, La Cour K, Athanasıou AE, Gjessing PE. Threedimensional evaluation of dentoskeletal changes after posterior crossbite correction by quad-helix or removable appliances. Br J Orthod 1992;19:97-107.
2. Hanson ML, Barnard LW, Case JL. Tongue-thrust in preschool children. Part II: Dental occlusal patterns. Am J Orthod 1970;57:15-22.
3. Kutin G, Hawes RR. Posterior cross-bites in the deciduous and mixed dentitions. Am J Orthod 1969;56:491-504.
4. Sandıkçıoğlu M, Hazar S. Skeletal and dental changes after maxillary expansion in the mixed dentition. Am J Orthod Dentofacial Orthop 1997;111:321-7.
5. Petrén S, Bondemark L, Söderfeldt B. A systematic review concerning early orthodontic treatment of unilateral posterior crossbite. Angle Orthod 2003;73:588-96.
6. McNamara JA Jr. Early intervention in the transverse dimension: is it worth the effort? Am J Orthod Dentofacial Orthop 2002;121:572-4.
7. Lindner A, Henrikson CO, Odenrick L, Modéer T. Maxillary expansion of unilateral cross-bite in preschool children. Scand J Dent Res 1986; 94: 411-8.
8. Schröder U, Schröder I. Early treatment of unilateral posterior crossbite in children with bilaterally contracted maxillae. Eur J Orthod 1984;6:65-9.
9. Harberson VA, Myers DR. Midpalatal suture opening during functional posterior cross-bite correction. Am J Orthod 1978;74:310-3.
10. Bartzela T, Jonas I. Long-term stability of unilateral posterior crossbite correction. Angle Orthod. 2007;77:237-43.
11. Sari Z, Uysal T, Usumez S, Basciftci FA. Rapid Maxillary Expansion. Is it better in the mixed or in the permanent dentition? Angle Orthod 2003;73:654-61.
12. Petrén S, Bjerklin K, Bondemark L. Stability of unilateral posterior crossbite correction in the mixed dentition: a randomized clinical trial with a 3-year follow-up. Am J Orthod Dentofacial Orthop 2011;139:e73-81.
13. Hicks EP. Slow maxillary expansion. A clinical study of the skeletal versus dental response to low-magnitude force. Am J Orthod 1978;73:121-41.
14. Zimring JF,Isaacson RJ. Forces produced by rapıd maxillary expansion. 3. Forces present during retention. Angle Orthod 1965;35:178-86.
15. McNamara JA Jr. Long-term adaptations to changes in the transverse dimension in children and adolescents: An overview. Am J Orthod Dentofacial Orthop 2006;129:S71-4.
16. Lione R, Franchi L, Cozza P. Does rapid maxillary expansion induce adverse effects in growing subjects? Angle Orthod 2013;83:172-82.
17. Ballanti F, Lione R, Fanucci E, Franchi L, Baccetti T, Cozza P. Immediate and post-retention effects of rapid maxillary expansion investigated by computed tomography in growing patients. Angle Orthod 2009;79:24-9.
18. Geran RG, McNamara JA Jr, Baccetti T, Franchi L, Shapiro LM. A prospective long-term study on the effects of rapid maxillary expansion in the early mixed dentition. Am J Orthod Dentofacial Orthop 2006;129:631-40.
19. Herold JS. Maxillary expansion: a retrospective study of three methods of expansion and their long-term sequelae. Br J Orthod 1989;16:195-200.
20. Spillane LM, McNamara JA Jr. Maxillary adaptation to expansion in the mixed dentition. Semin Orthod 1995;1:176-87.
21. McNamara JA Jr, Brudon WL. Orthodontic and orthopedic treatment in the mixed dentition. Ann Arbor, MI: Needham press, 1993:145-69.
22. Spolyar JL. The design, fabrication, and use of a full-coverage bonded rapid maxillary expansion appliance. Am J Orthod 1984;86:136-45.
23. Wendling LK, McNamara JA Jr, Franchi L, Baccetti T. A prospective study of the short-term treatment effects of the acrylic-splint rapid maxillary expander combined with the lower Schwarz appliance. Angle Orthod 2005;75:7-14.
24. Bell RA, LeCompte EJ. The effects of maxillary expansion using a quad-helix appliance during the deciduous and mixed dentitions. Am J Orthod 1981;79:152-61.
25. Erdinç AE, Uğur T, Erbay E. A comparison of different treatment techniques for posterior crossbite in the mixed dentition. Am J Orthod Dentofacial Orthop 1999;116:287-300.
26. de Boer M, Steenks MH. Functional unilateral posterior crossbite. Orthodontic and functional aspects. J Oral Rehabil 1997;24:614-23.
27. Nerder PH, Bakke M, Solow B. The functional shift of the mandible in unilateral posterior crossbite and the adaptation of the temporomandibular joints: a pilot study. Eur J Orthod 1999;21:155-66.
28. Vargo J, Buschang PH, Boley JC, English JD, Behrents RG, Owen AH 3rd. Treatment effects and short-term relapse of maxillomandibular expansion during the early to mid mixed dentition. Am J Orthod Dentofacial Orthop 2007;131:456-63.
29. McNamara JA Jr, BaccettiT, Franchi L, Herberger TA. Rapid maxillary expansion followed by fixed appliances: a long-term evaluation of changes in arch dimensions. Angle Orthod 2003;73:344-53.
30. da Silva Filho OG, Montes AL, Torelly LF. Rapid maxillary expansion in the deciduous and mixed dentition evaluated through posteroanterior cephalometric analysis. Am J Orthod Dentofacial Orthop 1995;107:268-75.
31. Bishara SE, Bayati P, Jakobsen JR. Longitudinal comparisons of dental arch changes in normal and untreated Class II Division 1 subjects and their clinical implications. Am J Orthod Dentofacial Orthop 1996;110:483-9.
32. Arslan SG, Kama JD, Sahin S, Hamamci O. Longitudinal changes in dental arches from mixed to permanent dentition in a Turkish population. Am J Orthod Dentofacial Orthop 2007;132:576.e15-21.
33. Mathews JR. Translational movement of first deciduous molars into second molar positions. Am J Orthod 1969;55:276-85.
34. Mew JR. Semi-rapid maxillary expansion. Br Dent J 1977;143:301-6.
35 Krebs A. Expansion of the midpalatal suture studied by means of metallic implants. Eur J Orthod 1958;34:163-71.
36. Cotton LA. Slow maxillary expansion: skeletal versus dental response to low magnitude force in Macaca mulatta. Am J Orthod 1978;73:1-23.
37. Toroğlu MS, Uzel E, Kayalioğlu M, Uzel İ. Asymmetric maxillary expansion (AMEX) appliance for treatment of true unilateral posterior crossbite. Am J Orthod Dentofacial Orthop 2002;122:164-73.
38. Darendeliler MA, Strahm C, Joho JP. Light maxillary expansion forces with the magnetic expansion device. A preliminary investigation. Eur J Orthod 1994;16: 479-90.
39. Corbridge JK, Campbell PM, Taylor R, Ceen RF, Buschang PH. Transverse dentoalveolar changes after slow maxillary expansion. Am J Orthod Dentofacial Orthop 2011;140:317-25.
40. Ballanti F, Lione R, Fanucci E, Franchi L, Baccetti T, Cozza P. Immediate and post-retention effects of rapid maxillary expansion investigated by computed tomography in growing patients. Angle Orthod 2009;79:24-9.
41. Brunetto M, Andriani Jda S, Ribeiro GL, Locks A, Correa M, Correa LR. Three-dimensional assessment of buccal alveolar bone after rapid and slow maxillary expansion: a clinical trial study. Am J Orthod Dentofacial Orthop 2013;143:633-44.
42. Henry RJ. Slow maxillary expansion: a review of quad-helix therapy during the transitional dentition. ASDC J Dent Child 1993;60:408-13.
43. Bishara SE, Staley RN. Maxillary expansion: Clinical implications. Am J Orthod Dentofacial Orthop 1987;91:3-14.
44. Frank SW, Engel GA. The effects of maxillary quad-helix appliance expansion on cephalometric measurements in growing orthodontic patients. Am J Orthod 1982;81:378-89.
45. Sarver DM, Johnston MW. Skeletal changes in vertical and anterior displacement of the maxilla with bonded rapid palatal expansion appliances. Am J Orthod Dentofacial Orthop 1989;95:462-6.
46. Haas AJ. Rapid expansion of the maxillary dental arch and nasal cavity by opening the midpalatal suture. Angle Orthod 1961;31:73-90.
47. Lutz HD, Poulton DR. Stability of dental arch expansion in the deciduous dentition. Angle Orthod 1985;55:299-315.
48. Lima Filho RM, Lima AL, de Oliveira Ruellas AC. Mandibular changes in skeletal class II patients treated with Kloehn cervical headgear. Am J Orthod Dentofacial Orthop 2003;124:83-90.