Survival of palatal miniscrews used for orthodontic appliance anchorage: a retrospective cohort study

Karagkiolidou, Angeliki; Ludwig, Björn; Pazera, Pawel; Gkantidis, Nikolaos; Pandis, Nikolaos; Katsaros, Christos (2013). Survival of palatal miniscrews used for orthodontic appliance anchorage: a retrospective cohort study. American journal of orthodontics and dentofacial orthopedics, 143(6), pp. 767-72. Elsevier 10.1016/j.ajodo.2013.01.018

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INTRODUCTION The purpose of this study was to examine the overall success of miniscrews inserted in the paramedian palatal region for support of various appliances during orthodontic treatment. METHODS The patients received 1 or 2 miniscrews in the paramedian anterior palate of 8.0-mm length and 1.6-mm diameter placed during orthodontic treatment by the same experienced orthodontist. RESULTS In total, 196 patients (121 girls, 75 boys; median age, 11.7; interquartile range, 3.7) who received 384 miniscrews were evaluated. Two hundred four miniscrews were used with rapid palatal expansion appliances, 136 with appliances for distalization of posterior teeth, and 44 with other appliances, such as transpalatal arches for tooth stabilization. The overall survival of the miniscrews was excellent (97.9%) in the cases examined. Cox regression analysis showed no difference in the overall survival rates of miniscrews loaded with different appliances for sex (hazard ratio, 0.95; 95% confidence interval, 0.71-1.27; P = 0.73) after adjusting for appliance and age. CONCLUSIONS This study shows that miniscrews placed in the paramedian anterior palate for supporting various orthodontic appliances have excellent survival.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > School of Dental Medicine > Department of Orthodontics

UniBE Contributor:

Karagkiolidou, Angeliki; Pazera, Pawel; Gkantidis, Nikolaos; Pandis, Nikolaos and Katsaros, Christos

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0889-5406

Publisher:

Elsevier

Language:

English

Submitter:

Eveline Carmen Schuler

Date Deposited:

11 Feb 2014 11:31

Last Modified:

25 Jan 2017 12:15

Publisher DOI:

10.1016/j.ajodo.2013.01.018

PubMed ID:

23726326

URI:

https://boris.unibe.ch/id/eprint/39978

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