Treatment of Class II Maxillary Retrusion Case Using Miniscrew (Nonextraction Treatment of Adolescent Patient)

Abstract

Objective:This case report describes the protocol employed in the treatment of a patient with Class II subdivision malocclusion, with sagittal, transverse, and occlusal disharmonies.Materials and Methods:Treatment included the expansion of the maxilla with a banded Hyrax appliance over a period of 14 days. After a retention period, the device was removed and a stainless steel transpalatal arch was attached. The maxillary arch was bonded with MBT prescription brackets, and distalization of the left maxillary first molar commenced on a 0.01630.022-inch stainless steel archwire supported by a miniscrew for indirect anchorage. After 4.7 mm of molar distalization, a Nance appliance with a bite plane was placed, and the mandibular arch was bonded to continue treatment, which lasted 18 months. Mandibular and maxillary fixed retainers were placed at the end of active treatment.Results:Pretreatment and posttreatment records showed that vertical and sagittal skeletal cephalometric findings were stable.Conclusion:A nonextraction and miniscrew anchorage approach for distalization is an effective treatment option for dental Class II correction.

Keywords

• class ii
• miniscrew
• distalization