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許源哲
*
許源哲
Taiwan
Main Instructor 鄭信忠
許恆瑞
Department / Institution Orthodontic Division of Dental department, Taipei Medical University Hospital
Classification Case report
  • ABSTRACT
  • TITLE
Introduction
Resolution of lower 2nd molar impaction is often challenging and complex, and often require early diagnosis and treatment. Treatment modalities included uprighting spring, open coiled-spring, Ni-Ti wire and surgical reposition used depending by patient conditions and orthodontist experiences. In this article, the authors present an adult case using open-coil spring to upright the bilateral mandibular 2nd molars mesio-angular impaction, and to treat the distal subgingival deep caries of 1st molar.
 
Diagnosis
Soft tissue: straight facial profile, protrusive lips
Skeletal: Angle Cl.I malocclusion
Dental: deep bite, #33-#43 crowding, #37 & #47 mesio-angular impaction, #36 & #46 subgingival deep caries, #18 & #28 & #38 & #48 impaction
 
Treatment overview
i. Uprighting #37 & #47
ii. Restored #36 #46 deep caries
iii. Intrusion of supra-erupted #17 #27
iv. Achieve normal OB & OJ
v. Maintained good Class I interdigitation
vi. Harmonized facial profile
 
Conclusion
The use of open-coil spring in bilateral mandibular 2nd molars mesio-angular impaction may be effective in young adults. Early & prudent diagnosis, flexible treatment plans, and regular observation may lead to a better outcome for the patients with 2nd molar impaction.
Treatment of Angle Class I Malocclusion with Bilateral Mandibular 2nd Molars Impaction- A Case Report