Factors which Have an Influence on Labial Inclination of Lower Incisors During Expansion Therapy with Fixed Appliance

Czech version

Authors: Z. Hanuliaková; I. Marek
Authors‘ workplace: Ortodontické oddělení Kliniky zubního lékařství LF UP a FN, Olomouc
Published in: Česká stomatologie / Praktické zubní lékařství, ročník 115, 2015, 4, s. 98-106
Category: Original Article – Clinical Prospective Study

Overview

Introduction and objective:
The expansion therapy is one of the methods for treatment of orthodontic anomalies. Proclination of lower incisors labially is often used to treat mild or medium serious crowding of Angle class I, to treat malocclusion of Angle Class II, division 1 and 2 type and also for treatment skeletal Class III by decompensation of position of lower incisors before orthognatic surgery. Labial inclination of lower incisors causes lengthening of lower dental arch. Excessive anterior inclination of lower incisors is generally considered as a highly risk movement potentially causing instability of orthodontic treatment outcomes and developing gingival recessions.Our aim is to point out the factors influencing anterior inclination of lower incisors towards the line A-Po and ML.

Material and methods:
This retrospective study includes 159 patients with nonextraction therapy of lower dental arch during fixed orthodontic appliance treatment. From the patient´s documentation there was located the use of the “antispee” metal arches, the use of the class II elastics and the use of stripping of lower incisors during treatment. The position and inclination of lower incisors towards A-Po and ML line was evaluated from the cephalometric X-rays. The discrepancy and the depth of the curve of Spee were evaluated from the model casts.

Results and conclusion:
There was no significant dependence between observed factors and the rate of labial inclination of lower incisors towards A-Po line. However with regard to ML line the lower incisors were significantly protruded by using „antispee“ metal arches for deep bite correction and also when the level of crowding increased. So we can say that observed factors influence just the labial inclination of lower incisors towards ML line with no relation towards A-Po line.

Klíčová slova:
labial inclination of lower incisors – ML and A-Po line – curve of Spee – discrepancy – stripping – class II elastics

Sources

1. AlQabandi, A. K., Sadowsky, C., BeGole, E. A.: A comparison of the effects of rectangular and round arch wires in levelling the curve of Spee. Am. J. Orthod. Dentofacial Orthop., 1999, 116, č. 5, s. 522–529.

2. Årtun, J., Garol, J. D., Little, R. M.: Long-term stability of mandibular incisors following successful treatment of Class II, Division 1, malocclusions. Angle Orthod., 1996, 66, č. 3, s. 229–238.

3. Aziz, T., Flores-Mir, C. F.: A systematic review of the association between appliance-induced labial movement of mandibular incisors and gingival recession. Aust. Orthod. J. 2011, 27, č. 1, s. 33–39.

4. Blake, M., Bibby, K.: Retention and stability: a review of the literature. Am. J. Orthod. Dentofacial Orthop., 1998, 114, č. 3, s. 299–306.

5. Braun, S., Hnat, W. P., Johnson, B. E.: The curve of Spee revisited. Am. J. Orthod. Dentofacial Orthop., 1996, 110, č. 2, s. 206–210.

6. Çelik, M.: Ortodontik tedavi ile Spee egrisinde gorulen degisiklikler ve bu degisikliklerin dentofasiyal yapilar uzerine etkilerinin incelenmesi [master‘s thesis]. Ankara, Turkey: University of Ankara. 2002. (Cit. in: Baydaş, B., Yavuz, I., Atasaral, N., Ceylan, I., Dağsuyu, I.M.: Investigation of the changes in the positions of upper and lower incisors, overjet, overbite, and irregularity index in subjects with different depths of curve of Spee. Angle Orthod., 2004, 74, č. 3, s. 349–355.)

7. Chudasama, D., Sheridan, J. J.: Guidelines for contemporary air-rotor stripping. J. Clin. Orthod. 2007, 41, č. 6, s. 315–320.

8. Combrink, F. J., Harris, A. M., Steyn, C. L., Hudson, A. P.: Dentoskeletal and soft-tissue changes in growing class II mal-occlusion patients during nonextraction orthodontic treatment. SADJ, 2006, 61, č. 8, s. 344–350.

9. Djeu, G., Hayes, K., Zawaideh, S.: Correlation between mandibular central incisor proclination and gingival recession during fixed appliance therapy. Angle Orthod., 2002, 72, č. 3, s. 238–245.

10. Dusek, M. W.: The curve of Spee: A search for causation [master‘s thesis]. Memphis, Tenn: University of Tannessee. 2000. (Cit. in: Baydaş, B., Yavuz, I., Atasaral, N., Ceylan, I., Dağsuyu, I.M. Investigation of the changes in the positions of upper and lower incisors, overjet, overbite, and irregularity index in subjects with different depths of curve of Spee. Angle Orthod., 2004, 74, č. 3, s. 349–355.)

11. Erdinc, A. E., Nanda, R. S., Işiksal, E.: Relapse of anterior crowding in patients treated with extraction and nonextraction of premolars. Am. J. Orthod. Dentofacial Orthop., 2006, 129, č. 6, s. 775–784.

12. Freitas, K. M., de Freitas, M. R., Henriques, J. F., Pinzan, A., Janson, G.: Postretention relapse of mandibular anterior crowding in patients treated without mandibular premolar extraction. Am. J. Orthod. Dentofacial Orthop., 2004, 125, č. 4, s. 480–487.

13. Gebauerová, M.: Speeova křivka. Atestační práce ke specializační zkoušce z ortodoncie, Olomouc 2006.

14. Hong, R. K., Hong, H. P., Koh, H. S.: Effect of reverse curve mushroom archwire on lower incisors in adult patients: A prospective study. Angle Orthod., 2001, 71, č. 6, s. 425–432.

15. Houston, W. J., Edler, R.: Long-term stability of the lower labial segment relative to the A-Pog line. Eur. J. Orthod., 1990, 12, č. 3, s. 302–310.

16. Kahl-Nieke, B., Fischbach, H., Schwarze, C. W.: Post-retention crowding and incisor irregularity: a long-term follow-up evaluation of stability and relapse. Br. J. Orthod., 1995, 22, č. 3, s. 249–257.

17. Kamínek, M.: Současné fixní ortodontické aparáty. Praha: Avicenum, 1976.

18. Kamínek, M., Štefková, M.: Ortodoncie I. Olomouc: Univerzita Palackého, 2001.

19. Kamínek, M., Štefková, M.: Ortodoncie II. Olomouc: Univerzita Palackého, 1991.

20. Kamínek, M., Štefková, M.: Vedlejší účinky fixních aparátů, chyby a jejich odstraňování. Zvyšování skusu. Ortodoncie, 1996, 5, č. 1, s. 17–19.

21. Little, R. M.: Stability and relapse of mandibular anterior alignment: University of Washington Studies. Semin. Orthod., 1999, 5, č. 3, s. 191–204.

22. Marek, I., Novotný, R., Szostková, Z.: Nástroje ke strippingu a vliv jejich různé drsnosti na sklovinu. Studie in vitro. Ortodoncie, 2009, 18, č. 3, s. 14–24.

23. Melsen, B., Allais, D.: Factors of importance for the development of dehiscences during labial movement of mandibular incisors: A retrospective study of adult orthodontic patients. Am. J. Orthod. Dentofacial Orthop., 2005, 127, č. 5, s. 552–561.

24. Nance, N. H.: The limitations of orthodontic treatment. Part II. Am. J. Orthod.,1947, 33, č. 4, s. 253–301. (Cit. in: Erdinc, A. E., Nanda, R. S., Işiksal, E.: Relapse of anterior crowding in patients treated with extraction and nonextraction of premolars. Am. J. Orthod. Dentofacial Orthop., 2006, 129, č. 6, s. 775–784.)

25. Nelson, B., Hansen, K., Hagg, U.: Class II correction in patients treated with class II elastics and with fixed functional appliances: a comparative study. Am. J. Orthod. Dentofacial Orthop., 2000, 118, č. 2, s. 142–149.

26. Pandis, N., Polychronopoulou, A., Sifakakis, I., Makou, M., Eliades, T.: Effects of levelling of the curve of Spee on the proclination of mandibular incisors and expansion of dental arches: a prospective clinical trial. Aust. Orthod. J., 2010, 26, č. 1, s. 61–65.

27. Paquette, D. E., Beattie, J. R., Johnston, L. E. jr.: A long-term comparison of nonextraction and premolar extraction and edgewise therapy in „borderline“ Class II patient. Am. J. Orthod. Dentofacial Orthop. 1992, 102, č. 1, s. 1–14.

28. Proffit, W. R., Fields, H. W., Sarver, D. M.: Contemporary Orthodontics. 4th ed. St. Louis: Mosby, 2007.

29. Reddy, P., Kharbanda, O. P., Duggal, R., Parkash, H.: Skeletal and dental changes with nonextraction Begg mechanotherapy in patients with Class II Division 1 malocclusion. Am. J. Orthod. Dentofacial Orthop., 2000, 118, č. 6, s. 641–648.

30. Renkema, A. M., Fudalej, P. S., Renkema, A., Bronkhorst, E., Katsaros, C.: Gingival recessions and the change of inclination of mandibular incisors during orthodontic treatment. Eur. J. Orthod., 2013, 35, č. 2, s. 249–255.

31. Rossouw, P. E., Preston, C. B., Lombard, C. J.: A longitudinal evaluation of extraction versus nonextraction treatment with special reference to the posttreatment irregularity of the lower incisors. Semin. Orthod., 1999, 5, č. 3, s. 160–170.

32. Ruf, S., Hansen, K., Pancherz, H.: Does orthodontic proclination of lower incisors in children and adoleccents cause gingival recession? Am. J. Orthod. Dentofacial Orthop., 1998, 114, č. 1, s. 100–106.

33. Weinberg, M., Sadowsky, C.: Resolution of mandibular arch crowding in growing patients with Class I malocclusions treated nonextraction. Am. J. Orthod. Dentofacial Orthop., 1996, 110, č. 4, s. 359–364.

34. Yared, K. F., Zenobio, E. G., Pacheco, W.: Periodontal status of mandibular central incisors after orthodontic proclination in adults. Am. J. Orthod. Dentofacial Orthop., 2006, 130, č. 1, s. 6e.1–6e.8.

35. Zachrisson, B. U., Nyøygaard, L., Mobarak, K.: Dental health assesed more than 10 years after interproximal enamel reduction of mandibular anterior teeth. Am. J. Orthod. Dentofacial. Orthop., 2007, 131, č. 2, s. 162–169.

Labels

Maxillofacial surgery Orthodontics Dental medicine

Longitudinal Study Focused on Dental Implant Osseointegration and Quality of Life by Adolescent Patients

Poor Dental Health as a Risk Faktor for Preterm Low Birth Weight Delivery

Gene Variability in Immunoregulatory Factors in Patients with Chronic Periodontitis and Diabetes Mellitus

Article was published in

Czech Dental Journal

2015 Issue 4