An interventional study of Skeletal anchorage and intermaxillary elastic assisted maxillary protraction in Class III Malocclusion, sponsored by TC Erciyes University. Completed at 1 site in Turkey. Open to participants aged 13 Years to 15 Years. Per ClinicalTrials.gov, last updated 2025-01-08.
Sponsored by TC Erciyes University · Not applicable, Interventional, and Treatment
This prospective randomized clinical study aimed to evaluate the effectiveness of corticotomy-assisted maxillary protraction with three different miniplate and intermaxillary elastic applications after corticotomy in patients with skeletal Class III malocclusion.
In acrylic splint group (AS) and palatal miniscrew group (MS), an acrylic splint containing hooks in the upper molar region was prepared and cemented. In the MS group, two miniscrews were used in the palatal region for additional anchorage. An incomplete Le Fort 1 osteotomy was performed in all patients to free the maxilla. Miniplates were placed vertically between the mandibular canine and first premolar in all groups, and horizontally under the osteotomy line in the maxillary molar region in miniplate group (MP). Class III elastics were applied 5 days after the surgery.
57 studies on the registry are indexed under Malocclusion, Angle Class III; 11 are open to participants now.
This study's enrollment of 20 is below the median of 32 across 53 interventional studies indexed under Malocclusion, Angle Class III.
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An incomplete Le Fort 1 osteotomy was performed in all patients to free the maxilla. Miniplates were placed vertically between the mandibular canine and first premolar in all groups, and horizontally under the osteotomy line in the maxillary molar region. Class III elastics were applied 5 days after the surgery. Treatment was continued until a positive overjet was achieved. Cephalometric radiographs were taken at the beginning of treatment (T0) and at the end of the protraction period (T1).
Device: Skeletal anchorage and intermaxillary elastic assisted maxillary protraction
An acrylic splint containing hooks in the upper molar region was prepared and cemented to the upper dentition. An incomplete Le Fort 1 osteotomy was performed in all patients to free the maxilla. Miniplates were placed vertically between the mandibular canine and first premolar in all groups, and horizontally under the osteotomy line in the maxillary molar region in miniplate group (MP). Class III elastics were applied 5 days after the surgery. Treatment was continued until a positive overjet was achieved. Cephalometric radiographs were taken at the beginning of treatment (T0) and at the end of the protraction period (T1).
Device: Skeletal anchorage and intermaxillary elastic assisted maxillary protraction
An acrylic splint containing hooks in the upper molar region was prepared and cemented to the upper dentition. Two miniscrews were used in the palatal region for additional anchorage. An incomplete Le Fort 1 osteotomy was performed in all patients to free the maxilla. Miniplates were placed vertically between the mandibular canine and first premolar in all groups, and horizontally under the osteotomy line in the maxillary molar region in miniplate group (MP). Class III elastics were applied 5 days after the surgery. Treatment was continued until a positive overjet was achieved. Cephalometric radiographs were taken at the beginning of treatment (T0) and at the end of the protraction period (T1).
Device: Skeletal anchorage and intermaxillary elastic assisted maxillary protraction
maxillary protraction with corticotomy-assisted different miniplate and intermaxillary elastic applications after growth spurt in patients with skeletal Class III malocclusion
Maxillomandibular sagittal changes
Investigation of Angular changes in SNA (°), SNB (°), ANB (°) measurements. Investigation of Distance changes in Wits (mm), A-Na Perp (mm), Co-A (mm), A-VRL (mm), and B-VRL (mm) measurements.
Time frame: Through study completion, an avarage of 6 months
Vertical changes
Investigation of Angular changes in Y-axis angle (°), SN-GoGN (°), SN-PP (°), Jarabak ratio measurements. Investigation of Distance changes in A-HRL (mm) measurement.
Time frame: Through study completion, an avarage of 6 months
Dentoalveolar changes
Investigation of Angular changes in U1-SN (°), U1-PP (°), IMPA (°) measurements. Investigation of Distance changes in Overjet (mm), Overbite (mm), U1-VRL (mm), and U6-VRL (mm) measurements.
Time frame: Through study completion, an avarage of 6 months
Soft tissue changes
Investigation of Angular changes in soft tissue convexity (°), NA-Pog (°) measurements. Investigation of Distance changes in VRL-prn (mm), VRL-Is (mm), VRL-li (mm), VRL-pog (mm), and ANS-Me (mm) measurements.
Time frame: Through study completion, an avarage of 6 months
Plan to share: No
This study is completed, as verified in Jun 2023. You cannot join it, but the record below documents what was studied.
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Malocclusion, Angle Class III →