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Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage.
Angle Orthod. 2013 Jul; 83(4):630-40.AO

Abstract

OBJECTIVE

To evaluate the effect of the multiloop edgewise arch wire (MEAW) technique with maxillary mini-implants in the camouflage treatment of skeletal Class III malocclusion.

MATERIALS AND METHODS

Twenty patients were treated with the MEAW technique and modified Class III elastics from the maxillary mini-implants. Twenty-four patients were treated with MEAW and long Class III elastics from the upper second molars as control. Lateral cephalometric radiographs were obtained and analyzed before and after treatment, and 1 year after retention.

RESULTS

Satisfactory occlusion was established in both groups. Through principal component analysis, it could be concluded the anterior-posterior dental position, skeletal sagittal and vertical position, and upper molar vertical position changed within groups and between groups; vertical lower teeth position and Wits distance changed in the experimental group and between groups. In the experimental group, the lower incisors tipped lingually 2.7 mm and extruded 2.4 mm. The lingual inclination of the lower incisors increased 3.5°. The mandibular first molars tipped distally 9.1° and intruded 0.4 mm. Their cusps moved 3.4 mm distally. In the control group, the upper incisors proclined 3°, and the upper first molar extruded 2 mm. SN-MP increased 1.6° and S-Go/N-ME decreased 1.

CONCLUSIONS

The MEAW technique combined with modified Class III elastics by maxillary mini-implants can effectively tip the mandibular molars distally without any extrusion and tip the lower incisors lingually with extrusion to camouflage skeletal Class III malocclusions. Clockwise rotation of the mandible and further proclination of upper incisors can be avoided. The MEAW technique and modified Class III elastics provided an appropriate treatment strategy especially for patients with high angle and open bite tendency.

Authors+Show Affiliations

State Key Laboratory of Oral Disease, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, China.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article

Language

eng

PubMed ID

23311602

Citation

He, Shushu, et al. "Camouflage Treatment of Skeletal Class III Malocclusion With Multiloop Edgewise Arch Wire and Modified Class III Elastics By Maxillary Mini-implant Anchorage." The Angle Orthodontist, vol. 83, no. 4, 2013, pp. 630-40.
He S, Gao J, Wamalwa P, et al. Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage. Angle Orthod. 2013;83(4):630-40.
He, S., Gao, J., Wamalwa, P., Wang, Y., Zou, S., & Chen, S. (2013). Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage. The Angle Orthodontist, 83(4), 630-40. https://doi.org/10.2319/091312-730.1
He S, et al. Camouflage Treatment of Skeletal Class III Malocclusion With Multiloop Edgewise Arch Wire and Modified Class III Elastics By Maxillary Mini-implant Anchorage. Angle Orthod. 2013;83(4):630-40. PubMed PMID: 23311602.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Camouflage treatment of skeletal Class III malocclusion with multiloop edgewise arch wire and modified Class III elastics by maxillary mini-implant anchorage. AU - He,Shushu, AU - Gao,Jinhui, AU - Wamalwa,Peter, AU - Wang,Yunji, AU - Zou,Shujuan, AU - Chen,Song, Y1 - 2013/01/11/ PY - 2013/1/15/entrez PY - 2013/1/15/pubmed PY - 2013/11/6/medline SP - 630 EP - 40 JF - The Angle orthodontist JO - Angle Orthod VL - 83 IS - 4 N2 - OBJECTIVE: To evaluate the effect of the multiloop edgewise arch wire (MEAW) technique with maxillary mini-implants in the camouflage treatment of skeletal Class III malocclusion. MATERIALS AND METHODS: Twenty patients were treated with the MEAW technique and modified Class III elastics from the maxillary mini-implants. Twenty-four patients were treated with MEAW and long Class III elastics from the upper second molars as control. Lateral cephalometric radiographs were obtained and analyzed before and after treatment, and 1 year after retention. RESULTS: Satisfactory occlusion was established in both groups. Through principal component analysis, it could be concluded the anterior-posterior dental position, skeletal sagittal and vertical position, and upper molar vertical position changed within groups and between groups; vertical lower teeth position and Wits distance changed in the experimental group and between groups. In the experimental group, the lower incisors tipped lingually 2.7 mm and extruded 2.4 mm. The lingual inclination of the lower incisors increased 3.5°. The mandibular first molars tipped distally 9.1° and intruded 0.4 mm. Their cusps moved 3.4 mm distally. In the control group, the upper incisors proclined 3°, and the upper first molar extruded 2 mm. SN-MP increased 1.6° and S-Go/N-ME decreased 1. CONCLUSIONS: The MEAW technique combined with modified Class III elastics by maxillary mini-implants can effectively tip the mandibular molars distally without any extrusion and tip the lower incisors lingually with extrusion to camouflage skeletal Class III malocclusions. Clockwise rotation of the mandible and further proclination of upper incisors can be avoided. The MEAW technique and modified Class III elastics provided an appropriate treatment strategy especially for patients with high angle and open bite tendency. SN - 1945-7103 UR - https://www.unboundmedicine.com/medline/citation/23311602/Camouflage_treatment_of_skeletal_Class_III_malocclusion_with_multiloop_edgewise_arch_wire_and_modified_Class_III_elastics_by_maxillary_mini_implant_anchorage_ L2 - http://www.angle.org/doi/10.2319/091312-730.1?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -