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Long-term effectiveness of the continuous and the sectional archwire techniques in leveling the curve of Spee.
Am J Orthod Dentofacial Orthop. 2008 Apr; 133(4):550-5.AJ

Abstract

INTRODUCTION

The correction of a deep overbite with the subsequent achievement of long-term stability is a difficult problem for orthodontists. The role of leveling the curve of Spee (COS) in bite opening and the success of orthodontic treatment has been well documented in the literature. The aim of this study was to investigate whether leveling the COS, by using 2 orthodontic treatment techniques, produces stable results on a long-term basis.

METHODS

We compared the long-term stability of leveling the COS with the straight-wire Alexander technique and the bioprogressive sectional-arch technique. The randomly selected subjects for this retrospective study were obtained from the private practices of Drs R. G. Alexander and Ruel Bench. Study models taken 2 months before treatment (T1), 2 months after treatment (T2), and after retention (T3) were evaluated. Measurements of the COS were made on the mandibular casts with a commercially available palatometer. Mandibular intercanine width, overbite, overjet, mandibular incisor irregularity, and mandibular arch length were also recorded.

RESULTS AND CONCLUSIONS

Both techniques produced highly significant reductions in the COS (T1 to T2). Statistically significant, but clinically insignificant, postretention relapse of the COS occurred (T2 to T3). For both techniques, a statistically significant difference was seen in the incidence of the relapse of the COS between patients who were completely leveled posttreatment and those who were not. We did not find a correlation between pretreatment COS and relapse in any of the other occlusal traits studied.

Authors+Show Affiliations

Department of Orthodontics, School of Dental Medicine, State University of New York at Buffalo, Buffalo, NY 14214-3008, USA. cbp@buffalo.eduNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

18405819

Citation

Preston, C Brian, et al. "Long-term Effectiveness of the Continuous and the Sectional Archwire Techniques in Leveling the Curve of Spee." American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, vol. 133, no. 4, 2008, pp. 550-5.
Preston CB, Maggard MB, Lampasso J, et al. Long-term effectiveness of the continuous and the sectional archwire techniques in leveling the curve of Spee. Am J Orthod Dentofacial Orthop. 2008;133(4):550-5.
Preston, C. B., Maggard, M. B., Lampasso, J., & Chalabi, O. (2008). Long-term effectiveness of the continuous and the sectional archwire techniques in leveling the curve of Spee. American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics, 133(4), 550-5. https://doi.org/10.1016/j.ajodo.2006.02.039
Preston CB, et al. Long-term Effectiveness of the Continuous and the Sectional Archwire Techniques in Leveling the Curve of Spee. Am J Orthod Dentofacial Orthop. 2008;133(4):550-5. PubMed PMID: 18405819.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Long-term effectiveness of the continuous and the sectional archwire techniques in leveling the curve of Spee. AU - Preston,C Brian, AU - Maggard,M Brent, AU - Lampasso,Judith, AU - Chalabi,Orfan, PY - 2005/08/11/received PY - 2006/02/09/revised PY - 2006/02/17/accepted PY - 2008/4/15/pubmed PY - 2008/4/29/medline PY - 2008/4/15/entrez SP - 550 EP - 5 JF - American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics JO - Am J Orthod Dentofacial Orthop VL - 133 IS - 4 N2 - INTRODUCTION: The correction of a deep overbite with the subsequent achievement of long-term stability is a difficult problem for orthodontists. The role of leveling the curve of Spee (COS) in bite opening and the success of orthodontic treatment has been well documented in the literature. The aim of this study was to investigate whether leveling the COS, by using 2 orthodontic treatment techniques, produces stable results on a long-term basis. METHODS: We compared the long-term stability of leveling the COS with the straight-wire Alexander technique and the bioprogressive sectional-arch technique. The randomly selected subjects for this retrospective study were obtained from the private practices of Drs R. G. Alexander and Ruel Bench. Study models taken 2 months before treatment (T1), 2 months after treatment (T2), and after retention (T3) were evaluated. Measurements of the COS were made on the mandibular casts with a commercially available palatometer. Mandibular intercanine width, overbite, overjet, mandibular incisor irregularity, and mandibular arch length were also recorded. RESULTS AND CONCLUSIONS: Both techniques produced highly significant reductions in the COS (T1 to T2). Statistically significant, but clinically insignificant, postretention relapse of the COS occurred (T2 to T3). For both techniques, a statistically significant difference was seen in the incidence of the relapse of the COS between patients who were completely leveled posttreatment and those who were not. We did not find a correlation between pretreatment COS and relapse in any of the other occlusal traits studied. SN - 1097-6752 UR - https://www.unboundmedicine.com/medline/citation/18405819/Long_term_effectiveness_of_the_continuous_and_the_sectional_archwire_techniques_in_leveling_the_curve_of_Spee_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0889-5406(07)01106-7 DB - PRIME DP - Unbound Medicine ER -