Abstract
Background: Orthodontic intrusion of maxillary incisors is commonly used to treat gummy smiles in deep bite patients. The effectiveness of using one versus two miniscrews for this purpose remains debated. This systematic review and meta-analysis aimed to compare the dental effects of one versus two miniscrews for maxillary incisor intrusion.
Materials and Methods: A literature search was conducted across multiple databases for studies published up to December 31, 2024. Five studies (four randomized controlled trials and one non-randomized study) met the inclusion criteria. Risk of bias was assessed using the RoB 2 and ROBINS-I tools.
Results: Intrusion was greater in the two-miniscrew group, while incisor proclination was higher in the one-miniscrew group. No significant difference was found between the groups in overbite correction. Root resorption was observed in both groups, with central incisor resorption more in the one-miniscrew group and lateral incisor resorption slightly more in the two-miniscrew group.
Conclusion: Two miniscrews placed distal to lateral incisors offer greater incisor intrusion and less proclination than a single miniscrew between central incisors. Overbite reduction was comparable, and root resorption varied by location
Recommended Citation
Zanwar, Vaibhav Sunil; Chavan, Santosh Jetu; Manchanda, Jyoti Sunny; Jain, Sakshi Santoshkumar; S, Vedant; and Arya, Rishika
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"Comparative Effectiveness of Single Versus Two Miniscrews for Maxillary Incisor Intrusion in Gummy Smile: A Systematic Review and Meta-analysis,"
Taiwanese Journal of Orthodontics: Vol. 37:
Iss.
4, Article 3.
https://doi.org/10.38209/2708-2636.1390
Available at:
https://www.tjo.org.tw/tjo/vol37/iss4/3
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