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  • Title: Leveling curve of Spee and its effect on mandibular arch length.
    Author: Afzal A, Ahmed I.
    Journal: J Coll Physicians Surg Pak; 2006 Nov; 16(11):709-11. PubMed ID: 17052421.
    Abstract:
    OBJECTIVE: To determine the additional space required for leveling of curve of Spee in the mandibular arch by continuous arch wire mechanics. STUDY DESIGN: Quasi-experimental interventional. SETTING: Orthodontics Department, Karachi Medical and Dental College from September 2002 to September 2004. SUBJECTS AND METHODS: Depth of curve of Spee and arch length were measured on 40 pre-treatment and posttreatment plaster models with the help of sharpened Boley gauge. RESULT: The study showed that clinical practice of allowing 1 mm of arch circumference for leveling each millimeter of curve of Spee overestimates the amount of arch space needed to flatten the curve of Spee (p < 0.001). CONCLUSION: The result suggested that the belief that 1 mm of arch circumference was necessary to level each millimeter of curve of spee present was an overestimation.
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