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題 名 | Topographic Study of Extracted Molars with Advanced Furcation Involvement: Furcation Entrance Dimension and Molar Type=罹患第三級根叉病變的拔除大臼齒的形態研究--根叉入口直徑和大臼齒形態的關係 |
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作 者 | 侯桂林; 洪純正; 楊奕馨; 蔡吉政; 陳丙何; 謝天渝; | 書刊名 | The Kaohsiung Journal of Medical Sciences |
卷 期 | 19:2 2003.02[民92.02] |
頁 次 | 頁68-74 |
分類號 | 416.953 |
關鍵詞 | 重症根叉病變; 大臼齒形態; 根叉入口直徑; Furcation entrance; Dimension; Furcation involvement; Molar loss; |
語 文 | 英文(English) |
中文摘要 | 本研究目的乃是探討臼齒根叉入口直徑的形態(furcation entrance dimension,FED))與重症根叉病變的關係。取材自 165 位牙周病患者因牙周病無法治療而拔除的 169 顆上顎與下顎大臼齒。患者年齡介於 24-84 齒之間,平均年齡為 47.8 0.2 歲。上、下顎根 FED 的測量部位包括上顎頰面、近心面、遠心面與下顎頰面與舌面根叉入口處。以立體顯微鏡連接電腦系統及 Bioscan Optimas 影像分析儀(Bioscan Optimas Image Analysis,BIOA))測量根叉入口直徑之大小。依 FED 直徑大小< 0.55 mm、0.55 mm~0.75 mm 及 > 0.75 mm 分類為 Grades I、 II 及 III 等三個等級。自動分類法乃是應用本科自行設計的自動分類程式在 JMP 的軟體計算並分類。統計值以卡方檢定分析 FED 的直徑大小和大臼齒位置、形態根叉入口位置的相關性與形態變化。結果顯示:1) FED之大小在上顎第一大臼齒與第二大臼齒頰面、近心面與遠心面均有顯著的差異性(p < 0.001);大臼齒的形態(molar type)和 FED 的大小在上顎頰面(p< 0.001)、遠心面 ( p < 0.001 ) 及下顎頰面 ( p< 0.001)舌面 ( p< 0.0001) 都有顯著的差異性;上、下顎第一及第二大臼齒間其 FED 等級間,具顯著的差異性 (上顎 p< 0.001;下顎 p< 0.0001)。本研究結論顯示被拔除的重症根叉病變(Class III FI)的大臼齒 FED 等級和臼齒形態具有顯著的相關性。 |
英文摘要 | This study investigated the topography of the furcation entrance dimension (FED) on molars with advanced furcation involvement (FI). The sample pool consisted of 169 maxillary and mandibular molars from a group of 165 individuals with severely advanced periodontal destruction. The subjects included men and women aged 24 to 84 years (mean, 47.8 ± 7.2 years). The FEDs of the maxillary buccal, mesial, and distal surfaces as well as the mandibular buccal and lingual surfaces were measured under a stereomicroscope and clarified into grades I (FED < 0.55 mm), II (0.55-0.75 mm), and III (> 0.75 mm) using automatic grading system software designed by our research associates. The differences and relationships among molar location, furcation site, and FED grade were analyzed using the chi-square test. There was a significant difference among buccal (BFED), mesial (MFED), and distal (DFED) FEDs in both the maxillary first (Chi-squared = 58.915, p < 0.001) and second (Chi-squared = 66.839, p < 0.001) molars. The relationship between molar type and FED grade was statistically significant for both the BFED (p < 0.001) and the DFED (p < 0.001) of maxillary molars, as well as for both the BFED (p < 0.0001) and LFED (p < 0.0001). The difference in FED grade between the first and second molars was statistically significant in both maxillary (p < 0.001) and mandibular (p < 0.0001) molars. There was a significant relationship between FED grade and tooth location at molars with advanced FI. |
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