A case of a 14 y/o male patient with a lingually impacted mandibular right 2nd molar was presented. After the third molar was extracted, a closed coil spring was used to connect the impaction to a miniscrew inserted in the nearby buccal shelf. Throughout the treatment process, all orthodontic appliances were hidden underneath the flap. The advantage of this closing flap technique is that it improves patient comfort while minimizing irritation to the surround muscle and soft tissue. Treatment options for uprighting lingually impacted mandibular 2nd molar, clinical considerations of orthodontic miniscrew placement, and design of biomechanics were also discussed.
Yu, Chun-Hung; Hsu, Sam Sheng-Pin; and Chang, Yang-Ming
"Correction of a Lingual Tipped Mandibular Second Molar with Miniscrew Orthodontics – Case Report,"
Taiwanese Journal of Orthodontics: Vol. 23:
1, Article 6.
Available at: https://www.tjo.org.tw/tjo/vol23/iss1/6