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利用錐狀射束電腦斷層模擬迷你骨釘植入下顎骨比較不同性別之下顎骨質密度

Evaluation of Gender Difference at Orthodontic Miniscrew Placement Sites in the Mandible: A CBCT Study

摘要


有鑑於國人下顎骨質密度與皮質骨厚度資料的缺乏,本實驗利用錐狀射束電腦斷層,模擬迷你骨釘植入下顎骨,比較不同性別之下顎骨性質差異,以作為臨床放置迷你骨釘找尋理想位置的參考。樣本為70位來自高雄地區,年齡介於18-40歲的受試者(36位男性,34位女性),測量位於第二小臼齒與第一大臼齒齒間區域、第一大臼齒與第二大臼齒間頰棚區域、第二大臼齒與第三大臼齒間頰棚區域、臼齒後區的骨質密度,比較各族群組內以及不同性別群組間差異性。結果顯示在男性與女性骨質密度比較上,各測量區域均顯示女性高於男性骨密度的測量結果,不過除了下腭左側臼齒後區具有統計學上顯著差異性,呈現女性顯著高於男性的結果(p=0.0067)之外,其餘位置未達顯著差異性。而組內比較發現,無論男性或是女性族群,均呈現由第二小臼齒與第一大臼齒齒間區域往第二大臼齒與第三大臼齒間頰棚區骨密度顯著增加的趨勢,而臼齒後區顯著小於其他三區的骨質密度。結論:根據本研究結果顯示,本實驗年齡層之受試者男女性之間骨密度無統計學上顯著差異性,而各性別組內發現的骨質密度變化,由頰棚區域往後方骨質密度增加的趨勢可做為臨床放置迷你骨釘的參考。

並列摘要


Purpose: the purpose of this study is to evaluate mandible bone density and gender difference through three-dimensional images. The Images was captured by cone-beam computer tomography (CBCT) and transfer into DICOM format for further examination.Material and method: CBCT images were obtained from 36 males and 34 females aged from 18 to 40 years. Mandible bone density was measured in 4 sites bilaterally. Inter-gender and intra-class comparison were made to distinguish the difference of acquired data.Result: Bone density measurement of females showed greater bone density at almost all sites but only showing significant difference in left retromolar area (p=0.0067). Intra-class comparison shows an increasing tendency from anterior measure site to posterior, and significant lower bone density in retromolar area of male.Conclusion: No significant difference of bone density between man and female except left retrolomar area. Intra-class comparison showing an increasing tendency of bone density from anterior mandible to posterior in both gender.

並列關鍵字

CBCT mandible bone density

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