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

侯桂林(Guey-Lin Hou) ； 洪純正(Chun-Cheng Hung) ； 楊奕馨(Yi-Hsin Yang) ； 蔡吉政(Chi-Cheng Tsai) ； 陳丙何(Ping-Ho Chen) ； 謝天渝(Tien-Yu Shieh)

《The Kaohsiung Journal of Medical Sciences》 19卷2期 (2003/02) Pp. 68-74

https://doi.org/10.6452/KJMS.200302.0068

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 destruction .The subjects included men and women aged 24to 84 years (mean, 47.8±7.2 years). The FEDs of the maxillary buccal, mesial, and distal surfaces as well as the mandibular I (FED＜0.55mm), II (0.55-0.75mm), and III (＞0.75mm) 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), mesial (MFED), and distal (DFED) FEDs in both the maxillary first (X24=58.915, p＜0.001) and second (X24=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.

關鍵字

根叉入口直徑 ； 重症根叉病變 ； 大臼齒形態

並列摘要

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 destruction .The subjects included men and women aged 24to 84 years (mean, 47.8±7.2 years). The FEDs of the maxillary buccal, mesial, and distal surfaces as well as the mandibular I (FED＜0.55mm), II (0.55-0.75mm), and III (＞0.75mm) 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), mesial (MFED), and distal (DFED) FEDs in both the maxillary first (X24=58.915, p＜0.001) and second (X24=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.

並列關鍵字

furcation entrance ； dimension ； furcation involvement ； molar loss