Darren Forst1, Simrit Nijjar2, Yasser Khaled3, Manuel Lagravere4, Carlos Flores-Mir5. 1. *Orthodontic Graduate Program, Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta. 2. **Private Practice. 3. ***TMD Graduate Program, Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, and. 4. ****Division of Orthodontics, Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada. 5. ****Division of Orthodontics, Department of Dentistry, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, Alberta, Canada carlosflores@ualberta.ca.
Abstract
OBJECTIVE: To evaluate in adolescents and young adults if jackscrew-based maxillary expansion therapies result in external root resorption as measured in vivo via any radiological method. METHODS: The authors conducted a systematic search of several electronic databases (MEDLINE, EMBASE, PubMed, Scopus, CINAHL, Evidence Based Medicine Reviews, LILACS) with the assistance of a senior librarian specialized in Health Sciences database searches through 25 August 2013, as well as a limited grey-literature search (Google Scholar). Human, in vivo studies of adolescents or young adults with transverse maxillary deficiency undergoing non-surgical maxillary expansion therapy through the use of a jackscrew-based maxillary expander with a radiographical assessment of root resorption were selected for full article review. Additionally, manual searches of reference lists of relevant articles were completed to identify additional publications not identified by electronic searches. The lowest levels of evidence accepted for inclusion were case-control studies or consecutively treated series of cases. Two authors independently reviewed and extracted data from selected studies. RESULTS: A total of 83 original articles were identified from the electronic database and limited grey-literature searches. Once selection criteria were applied, only three articles satisfied all inclusion criteria, and individual analysis of the selected articles was undertaken. CONCLUSIONS: Two-dimensional periapical radiographs do not fully reveal the amount of external root resorption associated with maxillary expansion therapy, except for frank apical root resorption. Three-dimensional cone-beam computed tomography radiography displays statistically significant root volume loss associated with maxillary expansion therapy. However, when considering volume-loss percentages, no statistical significance was found.
OBJECTIVE: To evaluate in adolescents and young adults if jackscrew-based maxillary expansion therapies result in external root resorption as measured in vivo via any radiological method. METHODS: The authors conducted a systematic search of several electronic databases (MEDLINE, EMBASE, PubMed, Scopus, CINAHL, Evidence Based Medicine Reviews, LILACS) with the assistance of a senior librarian specialized in Health Sciences database searches through 25 August 2013, as well as a limited grey-literature search (Google Scholar). Human, in vivo studies of adolescents or young adults with transverse maxillary deficiency undergoing non-surgical maxillary expansion therapy through the use of a jackscrew-based maxillary expander with a radiographical assessment of root resorption were selected for full article review. Additionally, manual searches of reference lists of relevant articles were completed to identify additional publications not identified by electronic searches. The lowest levels of evidence accepted for inclusion were case-control studies or consecutively treated series of cases. Two authors independently reviewed and extracted data from selected studies. RESULTS: A total of 83 original articles were identified from the electronic database and limited grey-literature searches. Once selection criteria were applied, only three articles satisfied all inclusion criteria, and individual analysis of the selected articles was undertaken. CONCLUSIONS: Two-dimensional periapical radiographs do not fully reveal the amount of external root resorption associated with maxillary expansion therapy, except for frank apical root resorption. Three-dimensional cone-beam computed tomography radiography displays statistically significant root volume loss associated with maxillary expansion therapy. However, when considering volume-loss percentages, no statistical significance was found.
Authors: Maria Grazia Piancino; Francesco MacDonald; Ivana Laponte; Rosangela Cannavale; Vito Crincoli; Paola Dalmasso Journal: Children (Basel) Date: 2021-04-30
Authors: Darren Forst; Simrit Nijjar; Carlos Flores-Mir; Jason Carey; Marc Secanell; Manuel Lagravere Journal: Prog Orthod Date: 2014-12-23 Impact factor: 2.750
Authors: My Huy Thuc Le; Seng Fong Lau; Norliza Ibrahim; Abu Kasim Noor Hayaty; Zamri Bin Radzi Journal: Korean J Orthod Date: 2018-02-06 Impact factor: 1.372