Complete analysis of space in the dental arch used in the Tweed-Merrifield technique as a key to prepare a maximally individual plan of orthodontic treatment
Journal Title: Forum Ortodontyczne - Year 2017, Vol 13, Issue 4
Abstract
The Tweed-Merrifield technique is based on a simple and detailed diagnosis and therapy considering a shape of the dental arch with preservation or improvement of facial features.<b> Aim</b>. The aim of the work was to present a reliable and structured method to analyse diagnostic models used in the Tweed-Merrifield technique. <b>Material and methods</b>. Based on a review of available literature the paper presents rules to assess an amount of space in the arch for tooth movements used in the Tweed-Merrifield technique. The analysis of models in this technique is based on the assessment of three segments of the dentition: anterior, middle and posterior. With regard to each segment actual width of teeth and amount of space available in the arch is measured. Additionally, in the anterior segment evaluation of alignment of lower incisors in relation to FMIA (Frankfort Mandibular Incisor Axis Angle) or IMPA (Lower Incisor Mandibular Plane Angle) cephalometric angles as well as assessment of the soft tissues thickness is important. With regard to the middle segment of the dentition measurement of the curve of the Spee plays an important role, and with regard to the posterior segment it is also necessary to evaluate expected growth in patients at the developmental age. <b>Conclusion</b>. A detailed assessment of possible tooth movements and treatment management taking into account an initial shape of the arch allow to obtain stable therapeutic outcomes. <b>(Warmuz J, Kawala B, Minch L. Complete analysis of space in the dental arch used in the TweedMerrifield technique as a key to prepare a maximally individual plan of orthodontic treatment. Orthod Forum 2017; 13: 283-90).</b><br/><br/>
Authors and Affiliations
Justyna Warmuz, Beata Kawala, Liwia Minch
Keywords
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- EP ID EP263744
- DOI 10.5604/01.3001.0010.8773
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