Đặc điểm lâm sàng sai khớp cắn hạng III xương ở bệnh nhân đang tăng trưởng được điều trị bằng facemask=Clinical characteristics of skeletal class III malocclusion in growing patients treated with facemask

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Tác giả: Thị Thảo Đỗ, Anh Khoa Huỳnh, Nguyên Lâm Lê, Khả Thanh Lý, Ngọc Hạnh Mã, Hoàng Dương Trịnh

Ngôn ngữ: vie

Ký hiệu phân loại:

Thông tin xuất bản: Tạp chí Y dược học Cần Thơ, 2024

Mô tả vật lý: tr.55-60

Bộ sưu tập: Metadata

ID: 244966

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Class III malocclusions are considered to be among the most challenging orthodontic problems. However, there have been few published investigations into the characteristics of skeletal class III malocclusion in Vietnamese children. Objectives: This study was aimed to investigate clinical features of skeletal Class III malocclusion due to maxillary retrusion in growing patients treated with facemask appliances. Materials and methods: A cross-sectional descriptive study was conducted on 31 patients who were 7 to 12 years old, diagnosed as having skeletal Class III malocclusion due to maxillary hypoplasia, and were indicated for facemask therapy. Clinical features were collected and analyzed. The data was analyzed using SPSS 20.0 software Results: Most of the patients were found to have brachyfacial or mesofacial patterns (80.6%) and the majority of the mandibular plane angles were flat or normal (77.4%). The patients exhibited a significant prevalence of Class I Angle malocclusion (77.4%). All subjects had an anterior crossbite with a median negative overjet of -2 mm. There were 2 patients with a negative overbite (an open bite) (accounting for 6.5%). Conclusions: In this study, patients with skeletal Class III malocclusion treated with facemask therapy exhibited brachyfacial or mesofacial patterns with hypodivergent or normodivergent facial patterns in the majority, and all had a negative overjet.Sai khớp cắn hạng III được xem là một trong những vấn đề chỉnh hình răng hàm mặt phức tạp nhất. Tuy nhiên, những nghiên cứu về đặc điểm sai khớp cắn hạng III xương ở trẻ em Việt Nam vẫn còn hạn chế. Mục tiêu nghiên cứu: Mô tả đặc điểm lâm sàng sai khớp cắn hạng III xương do hàm trên kém phát triển ở những bệnh nhân đang tăng trưởng được điều trị bằng khí cụ facemask. Đối tượng và phương pháp nghiên cứu: Nghiên cứu mô tả cắt ngang ở 31 bệnh nhân 7-12 tuổi, được chẩn đoán sai khớp cắn hạng III xương do hàm trên kém phát triển và được điều trị bằng khí cụ facemask. Các đặc điểm lâm sàng được thu thập và phân tích. Toàn bộ dữ liệu được xử lý bằng phần mềm SPSS 20.0. Kết quả: Đa số bệnh nhân có kiểu mặt trung bình hoặc ngắn (80,6%) với góc mặt phẳng hàm dưới phẳng hoặc trung bình (77,4%). Bệnh nhân có khớp cắn hạng III theo Angle chiếm tỉ lệ cao (77,4%). Toàn bộ bệnh nhân có cắn ngược vùng răng trước với độ cắn chìa có giá trị trung vị là -2 mm, đặc biệt ghi nhận 2 bệnh nhân (chiếm 6,5%) có độ cắn phủ âm là những bệnh nhân cắn hở. Kết luận: Các bệnh nhân sai khớp cắn hạng III xương điều trị với khí cụ facemask có kiểu mặt trung bình hoặc ngắn với góc mặt phẳng hàm dưới phẳng hoặc trung bình và toàn bộ có độ cắn chìa âm.

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