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  • Title: Upper molar intrusion in rehabilitation patients with the aid of microscrews.
    Author: Melo AC, Jawonski ME, Largura LZ, Thomé G, de Souza JR, da Silva MA.
    Journal: Aust Orthod J; 2008 May; 24(1):50-3. PubMed ID: 18649564.
    Abstract:
    BACKGROUND: Overeruption of an upper molar following loss of the opposing tooth is a common clinical finding. Rehabilitation can be difficult when the interocclusal space is reduced. AIM: To intrude an overerupted upper first molar and replace the missing lower first molar. METHODS: Buccal and palatal microscrews and a transpalatal bar were placed. The palatal miniscrew loosened shortly after implantation and was not replaced. A short length of elastomeric chain from the buccal miniscrew applied 30 g of force to the overerupted molar. The elastomeric chain was replaced every four weeks. RESULTS: Sufficient intrusion of the upper molar was obtained in 4 months. CONCLUSION: A single buccal microscrew and transpalatal arch can be used to intrude an overerupted upper molar.
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