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An assessment of late fixed functional treatment and the stability of Forsus appliance effects.
Aust Orthod J. 2014 May; 30(1):2-10.AO

Abstract

OBJECTIVE

To evaluate the treatment effects and stability of Forsus appliance therapy.

METHODS

Thirty-one patients (15 males, 16 females) with a mean age of 15.8 +/- 3.1 years (range 13 to 17.6 years, 15.3 +/- 1.2 years for females and 16.5 +/- 1.6 years for males) were selected. All patients had passed beyond their pubertal growth phase (after CS4 or MP3cap). Lateral cephalograms and threedimensional (3D) models were analysed before treatment (T0), at the end of treatment (T1) and at a follow-up visit (T2). The mean period from T1 to T2 was 25 months and ranged from 17 to 32 months. Tooth position and angulations, together with maxillary and mandibular position, were measured on cephalograms. The inclinations and vertical distance changes of mandibular incisors were measured on a 3D digital model.

RESULTS

The Forsus appliance produced significant skeletal and dental changes during treatment (from T0 to T1). In the sagittal plane, mandibular length (Co-Gn) increased 6.47 mm, the maxillary incisors and molars uprighted (angle U1-SN decreased 8.97 degrees and angle U6-SN decreased 3.51 degrees), the mandibular incisors proclined (angle L1-MP increased 3.93 degrees) and the mandibular molars advanced (L6-SP increased 3.61 mm). In the vertical plane, the maxilla and mandible rotated clockwise (angle PP-SN, angle MP-SN, angle OP-SN increased significantly) and the mandibular molars extruded (L6-MP increased 3.06 mm). All of the changes remained relatively stable after treatment. Cephalometric sagittal and vertical changes affecting the mandibular incisors from T1 to T2 were statistically insignificant (p > 0.05) except for lower incisor extrusion (L1-MP, p < 0.05).

CONCLUSION

The Forsus appliance induced significant skeletal and dental changes, which remained relatively stable during the observation period. The mandibular incisors, in particular, were stable two years after treatment.

Authors

No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24968640

Citation

Gao, Weimin, et al. "An Assessment of Late Fixed Functional Treatment and the Stability of Forsus Appliance Effects." Australian Orthodontic Journal, vol. 30, no. 1, 2014, pp. 2-10.
Gao W, Li X, Bai Y. An assessment of late fixed functional treatment and the stability of Forsus appliance effects. Aust Orthod J. 2014;30(1):2-10.
Gao, W., Li, X., & Bai, Y. (2014). An assessment of late fixed functional treatment and the stability of Forsus appliance effects. Australian Orthodontic Journal, 30(1), 2-10.
Gao W, Li X, Bai Y. An Assessment of Late Fixed Functional Treatment and the Stability of Forsus Appliance Effects. Aust Orthod J. 2014;30(1):2-10. PubMed PMID: 24968640.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - An assessment of late fixed functional treatment and the stability of Forsus appliance effects. AU - Gao,Weimin, AU - Li,Xiangdong, AU - Bai,Yuxing, PY - 2014/6/28/entrez PY - 2014/6/28/pubmed PY - 2014/7/12/medline SP - 2 EP - 10 JF - Australian orthodontic journal JO - Aust Orthod J VL - 30 IS - 1 N2 - OBJECTIVE: To evaluate the treatment effects and stability of Forsus appliance therapy. METHODS: Thirty-one patients (15 males, 16 females) with a mean age of 15.8 +/- 3.1 years (range 13 to 17.6 years, 15.3 +/- 1.2 years for females and 16.5 +/- 1.6 years for males) were selected. All patients had passed beyond their pubertal growth phase (after CS4 or MP3cap). Lateral cephalograms and threedimensional (3D) models were analysed before treatment (T0), at the end of treatment (T1) and at a follow-up visit (T2). The mean period from T1 to T2 was 25 months and ranged from 17 to 32 months. Tooth position and angulations, together with maxillary and mandibular position, were measured on cephalograms. The inclinations and vertical distance changes of mandibular incisors were measured on a 3D digital model. RESULTS: The Forsus appliance produced significant skeletal and dental changes during treatment (from T0 to T1). In the sagittal plane, mandibular length (Co-Gn) increased 6.47 mm, the maxillary incisors and molars uprighted (angle U1-SN decreased 8.97 degrees and angle U6-SN decreased 3.51 degrees), the mandibular incisors proclined (angle L1-MP increased 3.93 degrees) and the mandibular molars advanced (L6-SP increased 3.61 mm). In the vertical plane, the maxilla and mandible rotated clockwise (angle PP-SN, angle MP-SN, angle OP-SN increased significantly) and the mandibular molars extruded (L6-MP increased 3.06 mm). All of the changes remained relatively stable after treatment. Cephalometric sagittal and vertical changes affecting the mandibular incisors from T1 to T2 were statistically insignificant (p > 0.05) except for lower incisor extrusion (L1-MP, p < 0.05). CONCLUSION: The Forsus appliance induced significant skeletal and dental changes, which remained relatively stable during the observation period. The mandibular incisors, in particular, were stable two years after treatment. SN - 0587-3908 UR - https://www.unboundmedicine.com/medline/citation/24968640/An_assessment_of_late_fixed_functional_treatment_and_the_stability_of_Forsus_appliance_effects_ L2 - https://antibodies.cancer.gov/detail/CPTC-SIGLEC1-1 DB - PRIME DP - Unbound Medicine ER -