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Intraosseous screw-supported upper molar distalization.
Angle Orthod. 2004 Dec; 74(6):838-50.AO

Abstract

The aims of the present study were to investigate (1) the efficiency of intraosseous screws for anchorage in maxillary molar distalization and (2) the sagittal and vertical skeletal, dental, and soft tissue changes after maxillary molar distalization using intraosseous screw-supported anchorage. Twenty-five subjects (18 girls and seven boys; 11.3 to 16.5 years of age) with skeletal Class I, dental Class II malocclusion participated in the study. An anchorage unit was prepared for molar distalization by placing an intraosseous screw behind the incisive canal at a safe distance from the midpalatal suture following the palatal anatomy. The screws were placed and immediately loaded to distalize upper first molars or the second molars when they were present. The average distalization time to achieve an overcorrected Class I molar relationship was 4.6 months. The skeletal and dental changes were measured on cephalograms and dental casts obtained before and after the distalization. In the cephalograms, the upper first molars were tipped 8.8 degrees and moved 3.9 mm distally on average. On the dental casts, the mean distalization was five mm. The upper molars were rotated distopalatally. Mild protrusion (mean 0.5 mm) of the upper central incisors was also recorded. However, there was no change in overjet, overbite, or mandibular plane angle measurements. In conclusion, immediately loaded intraosseous screw-supported anchorage unit was successful in achieving sufficient molar distalization without major anchorage loss.

Authors+Show Affiliations

Department of Orthodontics, Faculty of Dentistry, Selcuk University, Konya, Turkey. egelgor@yahoo.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

15673149

Citation

Gelgör, Ibrahim Erhan, et al. "Intraosseous Screw-supported Upper Molar Distalization." The Angle Orthodontist, vol. 74, no. 6, 2004, pp. 838-50.
Gelgör IE, Büyükyilmaz T, Karaman AI, et al. Intraosseous screw-supported upper molar distalization. Angle Orthod. 2004;74(6):838-50.
Gelgör, I. E., Büyükyilmaz, T., Karaman, A. I., Dolanmaz, D., & Kalayci, A. (2004). Intraosseous screw-supported upper molar distalization. The Angle Orthodontist, 74(6), 838-50.
Gelgör IE, et al. Intraosseous Screw-supported Upper Molar Distalization. Angle Orthod. 2004;74(6):838-50. PubMed PMID: 15673149.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Intraosseous screw-supported upper molar distalization. AU - Gelgör,Ibrahim Erhan, AU - Büyükyilmaz,Tamer, AU - Karaman,Ali Ihya Yhya, AU - Dolanmaz,Doğan, AU - Kalayci,Abdullah, PY - 2005/1/28/pubmed PY - 2005/2/26/medline PY - 2005/1/28/entrez SP - 838 EP - 50 JF - The Angle orthodontist JO - Angle Orthod VL - 74 IS - 6 N2 - The aims of the present study were to investigate (1) the efficiency of intraosseous screws for anchorage in maxillary molar distalization and (2) the sagittal and vertical skeletal, dental, and soft tissue changes after maxillary molar distalization using intraosseous screw-supported anchorage. Twenty-five subjects (18 girls and seven boys; 11.3 to 16.5 years of age) with skeletal Class I, dental Class II malocclusion participated in the study. An anchorage unit was prepared for molar distalization by placing an intraosseous screw behind the incisive canal at a safe distance from the midpalatal suture following the palatal anatomy. The screws were placed and immediately loaded to distalize upper first molars or the second molars when they were present. The average distalization time to achieve an overcorrected Class I molar relationship was 4.6 months. The skeletal and dental changes were measured on cephalograms and dental casts obtained before and after the distalization. In the cephalograms, the upper first molars were tipped 8.8 degrees and moved 3.9 mm distally on average. On the dental casts, the mean distalization was five mm. The upper molars were rotated distopalatally. Mild protrusion (mean 0.5 mm) of the upper central incisors was also recorded. However, there was no change in overjet, overbite, or mandibular plane angle measurements. In conclusion, immediately loaded intraosseous screw-supported anchorage unit was successful in achieving sufficient molar distalization without major anchorage loss. SN - 0003-3219 UR - https://www.unboundmedicine.com/medline/citation/15673149/Intraosseous_screw_supported_upper_molar_distalization_ L2 - http://www.angle.org/doi/10.1043/0003-3219(2004)074<0838:ISUMD>2.0.CO;2?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -